If acceleration is present, both the system's and the individual objects' accelerations are the same. Usually, a system analysis is done to figure out the system's acceleration.
An individual object analysis is combined with the system analysis. Any one of the two items is isolated and treated as a distinct, independent entity in the individual object analysis. The forces operating on the item individually are recognized and computed using a free-body diagram. It is customary to analyze each object separately in order to calculate the magnitude of any force acting between the two. One of the two methods that is frequently used to evaluate two-body problems is the dual combination of a system analysis and an individual object analysis.
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Which factor is most important to keep the same when looking at the meniscus to compare the surface tension of different liquids?.
Temperature and impurities are most important factors to keep the same when looking at the meniscus to compare the surface tension of different liquids.
Define surface tension.
Surface tension is a characteristic of liquids brought on by an imbalance in molecular forces at their surfaces. The surface tension is also impacted by factors that influence the molecular forces. The liquid's nature, the environment it is in, and its purity all affect how much surface tension there is.
Impurities:
Impurities that are soluble: The surface tension may rise or fall if the contaminants are soluble. If the contaminants are less soluble, the surface tension of the liquid will be reduced. For instance, camphor lowers the surface tension of water because it is less soluble in water. On the other hand, when the contaminants are more soluble, the liquid's surface tension will rise.
Insoluble impurities :Dirt, grease, and other insoluble contaminants will reduce a liquid's surface tension.
Temperature:
As the temperature rises, the molecular attraction between liquid molecules weakens. As a result, liquid surface tension falls as liquid temperature rises.
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a conical paper cup is 20 cm tall witha radius of 10 cm the cup is being filled with water aat a rate of
The rate at which water is poured into the cup of radius 10 cm when the water level is 8 cm is 100.48 cm^3/sec.
Since we know the volume of a cone is: V=πr²h/3, where h is the height and r is the radius of the base of the cone .Here the slope of h and r is: h/r= 20/10 =2 ,Now we can convert the formula for the volume of the cone with just one variable :
V=π(h/2)²h/3
=πh³/12
Now differentiation of both sides with respect to time t, we get
V'=3πh²h'/12, where h' is the rate of change of height
=πh²h'/4
now substituting the know values in the above formula , we get
V= 3.14*(8)²*2/4 = 32 *3.14 = 100.48 cm³/sec .
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A conical paper cup is 20 cm tall with a radius of 10 cm. The cup is filled with water so that the water level rises at a rate of 2 cm/sec. At what rate is water being poured into the cup when the water level is 8 cm?
a capacitor has a capacitance of 1.1 pf. what potential difference would be required to store 13 pc? answer in units of v.
The potential difference required to store 13pc charge is 11.72Volt if a capacitor capacitance value is 1.1pf.
Capacitance is a capability just of the math of the plan of the capacitor, e.g., the restricting surface region of the plates and the distance among them, and the permittivity of the dielectric material between the plates. For the vast majority dielectric materials, the permittivity and in this manner the capacitance, is autonomous of the likely distinction between the conduits and the absolute charge on them.
The SI unit of capacitance is the farad (image: F), named after the English physicist Michael Faraday. A 1 farad capacitor, when accused of 1 coulomb of electrical charge, has a possible distinction of 1 volt between its plates. The proportional of capacitance is called elastance.
We know that charge enclosed around capacitors=product of capacitance of capacitor and potential difference around the plates of capacitors, or
=>q=CV
We have C as 1.1pf and q as 13pc
Therefore,13=1.1×V
=>V=13/1.1
=>V=11.72Volt
Hence, value of potential difference is 11.72 Volt.
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Nuclear decay occurs according to first-order kinetics. What is the half-life of polonium-218 if a sample decays from 55. 4 g to 31. 7 g in 2. 50 minutes?.
3.10 minutes is the half-life of polonium-218 if a sample decays from 55. 4 g to 31. 7 g in 2. 50 minutes.
What is the half-life of polonium-218 if a sample decays from 55. 4 g to 31. 7 g in 2. 50 minutes?For first order kinetics, t = 2.303/λ log[N₀]/[Nt]
Also, t₁₁₂ = 0.693/λ
λ = 0.693/t₁₁₂
From above equation:
t = 2.303 ÷ 0.693/t₁₁₂log[N₀]/[Nt]
t₁₁₂ = 0.693 × t/2.303 × log[N₀]/[Nt]
t₁₁₂ = 0.693 × 2.50/2.303 × log[55.9]/[31.7]
t₁₁₂ = 1.73/0.557
t₁₁₂ = 3.10
Therefore, 3.10 is the correct answer.
Which equation yields a first order process's proper integrated rate law?ln[A] t = -kt + ln[A] 0 is the integrated rate rule for the first-order reaction A's products. A straight line is produced when the natural log of [A] is plotted as a function of time because this equation has the form y = mx + b.
What is nuclear decay?The collection of diverse processes known as radioactive decay are how an unstable atomic nucleus spontaneously emits subatomic particles. According to theory, a daughter nucleus is created when the parent nucleus decays.
What is meant by first - order kinetics?When a fixed percentage of the drug is excreted per unit of time, this is known as first order kinetics. The amount of drug in the body has a direct relationship to the rate of removal. The amount of medication eliminated per unit time increases with concentration. The medication concentration decreases by 50% for each half life.
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a 0.40 kg mass is attached to a 0.5 m string and displaced an angle of 12 degrees before it is released. 1. what is the initial potential energy of the pendulum? 2. what is the angular frequency of the pendulum? 3. what is the velocity of the pendulum at the lowest point in its swing? 4. what is the height of its displacement?
A pendulum is a weight released from a starting point so that it can swing freely. When a pendulum is displaced sideways it restores a force due to gravity that will accelerate it back toward the equilibrium position from the resting position.
How to find initial potential energy, angular frequency, velocity and height of displacement of a pendulum?
We know, m= 0.40kg
L=0.5m
Angle = 12°
i) Main answer is : initial potential energy = PE = mgh (1-cos∅)
= 0.9×9.81×0.5×(1-cos12°)
= 0.0429 J
ii)Main answer is: Angular frequency= W= √g/l
=4.43 rad/s
= 0.7 rev/s
iii) Main answer is : velocity of pendulum = V=√2gl(1-cos∅)
=0.46m/s
iv) Main answer is : height of displacement= h=L (1-cos∅)
=0.01m
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The pendulum's angular frequency is 4.42 rad/s, and its potential energy is 0.04 J. the pendulum's lowest in its swings has a speed of 0.44 m/s, a motion time of 0.010905 m, and a lateral distance of 0.1039 m.
What is potential energy, exactly?Potential energy is a form of stored energy that is dependent on the relationship between different system components. When a spring is squeezed or strained, its energy increases. If a steel ball is lifted above the ground as contrasted to falling to the ground, it has higher potential energy.
Briefing:Given data:
The associated mass is m=0.40kg.
The string measures L=0.5m in length.
Angle misplaced is equal to 12°.
(1). Calculate the potential energy of pendulum:
PE=mg[L−Lcosθ]
PE=0.40kg×9.8m/s[0.5m−0.5m×cos12°]
PE=0.04J
Consequently, the pendulum's potential energy is 0.04 J.
(2). Determine the pendulum's angular frequency:
[tex]\omega=\sqrt{\frac{g}{L}}[/tex]
Changing every variable in the aforementioned equation:
[tex]\omega=\sqrt{\frac{9.8 \mathrm{~m} / \mathrm{s}^2}{0.5 \mathrm{~m}}}[/tex]
ω = 4.42 rad/s
Consequently, the pendulum's angular frequency is 4.42 rad/s.
(4). Do the vertical displacement calculation:
[tex]x_V=L-L \cos \theta[/tex]
[tex]\begin{aligned}& x_V=0.5 \mathrm{~m}-0.6 \mathrm{~m} \cos 12^{\circ} \\& x_V=0.010905 \mathrm{~m}\end{aligned}[/tex]
Do the horizontal displacement calculation:
[tex]\begin{aligned}& x_H=L \sin \theta \\& x_H=L \sin 12^{\circ} \\& x_H=0.1039 \mathrm{~m}\end{aligned}[/tex]
The height of the horizontal displacement is therefore 0.1039 m, while the height of the deformation is 0.010905 m.
(3).Calculate the pendulum's rock bottom in its swing by using energy balance to determine its velocity.
KE = PE
[tex]\frac{1}{2} 0.40 \mathrm{~kg} \times v^2=0.04 \mathrm{~J}[/tex]
v = 0.44 m/s
Calculate the pendulum's velocity at its rock bottom in its swing, which is 0.44 m/s.
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this chapter considers a downhill race between a rolling sphere, a rolling cylinder, a rolling hoop, and a sliding particle. who wins?
According to the assertion, the sliding particle will dominate the downhill race between the rolling sphere, rolling cylinder, rolling hoop, and sliding particle.
What is sliding friction, exactly?Sliding friction is the resistance that any two items produce as they slide against one another. This friction, sometimes referred to as kinetic friction, is the force required to keep one surface moving along another.
Briefing : A sphere, a cylinder, and a hoop, all of mass M and radius R, are released from rest and roll down a ramp of height h and slopeθ. They are joined by a particle of mass M that slides down the ramp without friction.
for particle c = 0 where c is a constant that depends upon the object .
a=a (particle), rolling sphere c=2/5, a (cm) = 5/7a (particle) =0.71a (particle)
rolling cylinder ,c=1/2 ,a(cm)=2/3a (particle) =0.67a (particle), rolling hoop =0.50a (particle).
then we have ¹/₂ I cm ω² ₊¹/₂ Mv cm²=Mgh
ω=Vcm/R , Icm = cMR² where c is a constant that depends upon the object .
Mgh= ¹/₂(cMR²)(Vcm/R )+¹/₂M v cm² , therefore v cm =[tex]\sqrt2gh/\sqrt\ (1+c)[/tex]
therefore , v(particle)>v(sphere)>v(cylinder)>v(hoop)
and a (particle)>a(sphere)>a(cylinder)>a(hoop).
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at what positive value of displacement x in terms of a is the potential energy 1/9 of the total mechanical energy?
1/9 of the total mechanical energy is the system's potential energy x=1/3.A .
Exactly how is energy defined?Energy is the capacity to perform labor, according to scientists. Due to the sheer capacity to convert energy from one medium to some other and use it to achieve things, human civilisation is attainable.
Which energy kinds are there?Chemical, electrical, radiant, mechanical, thermal, nuclear, and other six main types of energy exist. Additional kinds, such as electrochemical, acoustic, electromagnetic, and others, may be discussed in other studies.
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what is the mass of a large ship that has a momentum of 1.54 ×109kg·m/s, when the ship is moving at a speed of 48.7 km/h?
The large ship's mass with a momentum of 1.54 * [tex]10^{9}[/tex] kg m/s is [tex]3.16 * 10^{7}[/tex] kg
Given Parameters:
Speed of ship = 48.7 km/hr
The momentum of the ship = 1.54 * [tex]10^{9}[/tex] kg m/s
Momentum is characterized as the intensity of a body's motion.
Momentum is measured by "mass velocity" because it depends on both the speed and the direction of the body's motion. Mass is a scalar quantity, but velocity is a vector, hence momentum is a vector quantity. Mass in motion is quantified by momentum, which is the measure of how much mass is moving. Typically, it is denoted by the letter p.
Momentum (p) = Mass (m) * Speed (v)
p = mv
We need to calculate the mass of the ship,
m = p/v
[tex]m =\frac{1.54 * 10^{9} }{48.7} =0.0316*10^{9} = 3.16 * 10^{7}[/tex]
Thus, the mass of the ship is [tex]3.16 * 10^{7}[/tex] kg
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A scuba diver fills her lungs to capacity (6.0 L) when 10.0 m below the surface of the water and begins to ascend to the surface. Assume the density of the water in which she is swimming is 1000 kg/{eq}m^3 {/eq} and use g = 10 m/{eq}s^2 {/eq}A. Assuming the temperature of the air in her lungs is constant, to what volume must her lungs expand when she reaches the surface of the water?B. What effect would the warming of the air in her lungs have on the volume needed when she surfaces?C. Assuming the temperature of the air in her lungs is constant, what effect does her ascent have on the vrms of the air molecules in her lungs?
The lungs of the scuba diver should expand to a volume of 12L, the volume of the air will increase in her lungs with increase in temperature on the surface and the rms speed of the velocity of air will not change in her lungs.
The density of the water is given to be 1000 kg/m³. The capacity of the lungs of the diver is 6L and she goes down will 10m in the water. We can assume the temperature of the water to be constant.
A. The pressure P₁ at the surface of water is 100000 Pa.
So, the pressure at the depth of 10m in water will be given by,
P₂ = 1000x10x10 + P₁
P₂ = 100000 + P₁
P₂ = 200000 Pa
Now, we can write,
P₁V₁ = P₂V₂
Putting values,
6 x 200000 = V₂ x 100000
V₂ = 12L.
So, her lungs should expand to 12L.
B. On the surface, the pressure will be constant, so, the warming of air will further increase the volume of air in the lungs.
C. The Vrms is given by,
Vrms = √(3RT/M)
So, if the temperature is constant, the Vrms will not change because the mass of the air will also be the same.
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which of the following statement(s) is/are correct? i) stars like the sun generate energy through nuclear fusion.ii) the most stable nucleus in terms of binding energy per nucleon is 56fe.iii) the core of nuclear fission reactors consists of uranium enriched in 235u surrounded by a moderator which slows down the neutrons from the 235u.
The statements which are correct include the following:
i) Stars like the sun generate energy through nuclear fusion.
ii)The most stable nucleus in terms of binding energy per nucleon is 56fe.
iii) The core of nuclear fission reactors consists of uranium enriched in 235u surrounded by a moderator which slows down the neutrons from the 235u.
What is Nucleus?This is referred to as the dense part which is present at the center of the atom and it comprises of particles such as proton and neutron. Iron -56 is referred to as the most stable nucleus because it has the lowest mass per nucleon of all nuclides.
Nuclear fusion is the process in which two light nuclei merge to form a single heavier nucleus and energy is generated as a result which is used by stars.
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stephanie pulls on a rope that is attached to a large crate. she is pulling the crate along at a constant speed as it slides across rough carpet. how does the magnitude of the force of tension exerted on stephanie compare to the magnitude of the force of tension exerted on the crate?
The force of tension exerted on the crate has the same magnitude as the force of tension exerted on Stephanie.
What is force ?
a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.
The rope pulls with equal magnitude force but in opposite directions to the hand and to the mass (neglecting the weight of the rope). This is an example of Newton's third law. The rope is the medium that transmits forces of equal magnitude between the two objects but that act in opposite directions.
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bronco the skydiver falls toward earth. the attraction of earth on bronco pulls him down. the reaction to this force is
Bronco the skydiver falls toward earth. the attraction of earth on bronco pulls him down. The reaction to this force is.
a. Bronco finally pushing against Earth's surface.
b. Bronco pulling up on Earth.
c. Earth's surface finally pushing against Bronco.
d. neither A, B, nor C
Bronco pulling up on Earth
On this planet all our bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured via the acceleration that it offers to freely falling gadgets. At Earth’s surface the acceleration of gravity is ready 9.eight metres (32 feet) in step with second in keeping with 2nd. as a consequence, for every second an object is in free fall, its velocity will increase by using approximately 9.8 metres per 2nd. on the floor of the Moon the acceleration of a freely falling body is about 1.6 metres in line with second in line with second.
Skydiving, additionally called parachuting, use of a parachute—for either leisure or aggressive purposes—to slow a diver’s descent to the ground after jumping from an airplane or other excessive location. the game traces its beginnings to the descents crafted from a warm-air balloon by the French aeronaut André-Jacques Garnerin in 1797, however current skydiving is generally performed from a propeller-pushed airplane. At occasions together with the annual world free Fall convention in Quincy, Illinois, but, parachutists are afforded the possibility to jump from such diverse craft as hot-air balloons, helicopters, and a Boeing 727.
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A 500 kg empty elevator moves with a downwards acceleration of 2 m/s2. What is the tension force of the cable on the elevator?
The tension force of the cable on the elevator is 4000N.
From the question,
Mass of an elevator(m) = 500kg
It is accelerating downhill at a rate of [tex]2\frac{m}{s^{2} }[/tex]. It is necessary to determine the tension force of the cable on the elevator. We know that the net force on the elevator when it is traveling downhill is provided by:
F = m(g - a)
Here, g is the acceleration due to gravity
g = [tex]9.8\frac{m}{s^{2} }[/tex]
g ≅ 10[tex]\frac{m}{s^{2} }[/tex]
F = 500 × (10 - 2)
F = 500 × 8
F = 4000N
Therefore, the tension force of the cable on the elevator is 4000N.
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does it take the same amount of time for something at a steeper angle to fall than something at a less steep angle
The starting vertical velocity determines the time in the air. Increasing the relevant results lengthens the duration in the air because higher release degrees have a better and improve velocity component.
Why does physics recommend a launch angle of 45 degrees?
We see that for the lengthiest punts 2 = 90 degrees and, consequently, = 45 degrees because the sine function has an intake average of 90 degree that results in its highest output value, 1. In other words, a projectile moves and furthest when it is fired at a 45-degree angle.
Which direction has lowest range?
Range reduces with increasing projection angle.
The reach will be at its narrowest when the projected angle is extremely distant from 45 degrees.
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how many times a minute does a boat bob up and down on ocean waves that have a wavelength of 29.6 m and a propagation speed of 7.08 m/s
n = 7.5 times/minute does a boat bob up and down on ocean waves that have a wavelength of 29.6 m and a propagation speed of 7.08 m/s.
How do you find time with wavelength and speed?The wave moves one wavelength in one period. Speed is calculated using the formula v = / T. Wave speed, frequency, and wavelength are related by the equation v = f because the frequency, f, is 1/T.As a result, the equation becomes v = f * or = v / f when solving for. Wave speed is measured in terms of distance travelled in a unit of time, such as metres per second or m/s. Frequency is measured in Hz. Wavelength is a distance parameter, often measured in metres (m).The wave's velocity and wavelength first, it is simple to calculate the frequency using the formulas f = v. Using T = 2 = 1 f, we can calculate the time period after calculating the frequency.Given data :
Wavelength of the ocean wave, λ = 29.6 mThe speed of the ocean wave, v = 7.08 m/sThe relation between the speed of wave, wavelength and frequency is given by :
v = f x λ
f = v / λ = 7.08 / 29.6 = 0.239 Hz
The number of times per minute the bob moves up and down is given by :
n = f x t = 0.239 x 60 = 14.35 times / minute.
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suppose an experiment determines that the amount of work required for a force field f to move a particle from the point s1, 2d to the point s5, 23d along a curve c1 is 1.2 j and the work done by f in moving the particle along another curve c2 between the same two points is 1.4 j. what can you say about f? why?.
The force of moving a particle is 0.00262 N.
The electric field exerts force on a charged particle when it shifts from one position to another while moving through the same electric field. We can define a potential energy for the force produced by an electric field because it is conservative work. This enables us to analyze physical processes involving charged particles and electric fields using the concepts of work, energy, and the conservation of energy.displacement is (1,2) to (5,23)
Work is 1.2 J
[tex]Work =Force * Displacement\\\\Force= Work/Displacement[/tex]
F=1.2/[(X-x)²+(Y-y)²]
F=1.2/457
F=0.00262 N
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what is the magnetic field in the middle of the capacitor plates at a distance d from the center, as a function of time t ? give your answer in terms of d , r , i0 , t , r , c , and any necessary constants.
That completely depends on the voltage wave-form that's being impressed across the capacitor
What is magnetic field and capacitor ?The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field. Moving electric charges and magnetic dipoles combine to form a magnetic field, which acts as a force field on other adjacent moving charges and magnetic dipoles.
A two-terminal electrical device known as a capacitor is capable of storing energy in the form of an electric charge. It is made up of two electrical wires that are spaced apart by a certain amount. Vacuum may be used to fill the space between the conductors, or a dielectric, an insulating substance, may be used instead.
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consider two objects moving in uniform circular motion around two circular tracks of the same radius. if the linear speed of object 2 is 50\p% greater than the linear speed of object 1, then how does centripetal acceleration of object 2 compare to the centripetal acceleration of object 1?
Centripetal acceleration of object 2 with 1 is [tex]& a c_2=2.25 a c_1[/tex]
What is Centripetal Acceleration ?The pace at which a body moves through a circle is known as centripetal acceleration. When a body travels in a circle, its direction is constantly changing, which results in a change in velocity, which generates an acceleration because velocity is a vector quantity (i.e., it contains both a magnitude, the speed, and a direction).
By applying the formula for the Centripetal acceleration :
[tex]& a_c=\frac{v^2}{R} \\& a_{c_1}=\frac{v_1^2}{R} \\& a_{c_2}=\frac{v_2^2}{R} \\[/tex]
[tex]& \frac{a c_2}{a c_1}=\frac{v_2^2}{v_1^2}=\left(\frac{1.5 v_1}{v_1}\right)^2=2.25 \\[/tex]
[tex]& \left.a_{c_2}=2.25 a c_1\right) \\[/tex]
By Comparing the centripetal acceleration of two objects
Centripetal acceleration of object 2 with 1 is [tex]& a c_2=2.25 a c_1[/tex]
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g which of the following objects has the greatest amount of momentum? assume all the objects are moving along the positive horizontal axis. group of answer choices a 1 kg block with a 5 m/s velocity a 5 kg block with a 1 m/s velocity a 10 kg block with a 2 m/s velocity a 2 kg block with a 5 m/s velocity a 3 kg block with a 1 m/s velocity
Option C. momentum ia 20 kg m/s has the greatest amount of momentum.
Momentum is the product of the mass and pace of an item. it is a vector amount, owning a value and a route. If m is an item's mass and v is its pace, then the object's momentum p.
Momentum in a easy way is a amount of movement. here quantity is measurable due to the fact if an object is transferring and has mass, then it has momentum. If an item does now not move then it has no momentum.
Calculation:-
momentum = mass × velocity
1. momentum = 1 × 5 m/s
= 5 kg m/s
2. momentum = 5 × 1 m/s
= 5 kg m/s
3. momentum = 10 × 2 m/s
= 20 kg m/s
4. momentum = 2 × 5 m/s
= 10 kg m/s
5. momentum = 3 × 1 m/s
= 3 kg m/s
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in our milky way galaxy, the orion spur is the select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer. a closest arm to the central bulge. b closest arm to our sun. c farthest arm from the central bulge.
According to the given information in our milky way galaxy, the orion spur is closest arm to our sun.
Where is the central bulge?A vast disc of stars has an element of stars in the centre. Even though there are many spiral galaxies that share this characteristic, researchers have spent decades trying to figure out how and when the Way Way for sure central bulge may have developed. A spiral galaxy is the Spiral Galaxy. We think it has four large arms, several lesser arm segments, and a central bulge.
What type of galaxy has a central bulge?A spiral known universe structure is intricate; it consists of a revolving disc with a spiral architecture that originates at a dense central bulge. Halos, which are roughly spherical regions along each plane of the discs, encircle spiral galaxies and are sparsely inhabited.
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Why do astronomers suspect that a supernova explosion occurred near the nebula that gave birth to the solar system?.
Answer:
Meteorites Contain Magnesium-26
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Which two options are reasons that electromagnetic waves are effective for use in communication devices?.
The two options are reasons that electromagnetic waves are effective for use in communication devices:
1. Electromagnetic waves can travel long distances with minimal energy loss.
2. Electromagnetic waves can easily be modulated to carry information.
What is electromagnetic wave?
In terms of physics, electromagnetic radiation (EMR) is made up of electromagnetic (EM) field waves that travel through space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, visible light, ultraviolet, and radio waves. These waves are all a component of a electromagnetic spectrum. Electromagnetic waves, that are synchronised oscillations of the electric and magnetic fields, are the traditional form of electromagnetic radiation. Due to the periodic alteration of the electric or magnetic field, electromagnetic radiation or waves are produced. Different wavelengths of the electromagnetic spectrum are produced depending on the manner in which this periodic change takes place and the power generated. Electromagnetic waves move at the speed of light, commonly abbreviated as c, in a vacuum.
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Answer:
Explanation:
Which two options are reasons that electromagnetic waves are effective for use in communication devices?.
a small artery has a length of 1.6 ✕ 10−3 m and a radius of 2.4 ✕ 10−5 m. if the pressure drop across the artery is 1.8 kpa, what is the flow rate (in mm3/s) through the artery? (assume that the temperature is 37°c.)
The flow rate through the artery is 7.03*10-11 m3/s (measured in mm3/s). What is the flow rate through the artery in mm3/s if the pressure drop across the artery is 1.8 kpa?
How can I calculate flow rate?
To determine the flow rate represented as Q, which is equal to Q = V/t, we must define both the volume V and the instant in time that it is passing past represented by t. In addition, the relationship between flow rate and velocity is shown by the equation Q = Av, where A is the flow's cross-sectional area and v is its average velocity.
What three different flow rates are there?
Vacuum technology primarily deals with three forms of flow: viscous or continuous flow, molecular flow, and at the interface between these two.
Briefing:
Given,
Pressure Δp = 1.8 kPa
Viscosity μ = 2.03*10-3Pa
Subsituting the values in equation,
Δp = 8μLQ / π
Q = Δp × π / 8μL
Q=7.03*10-11 m3/s
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if quasars often resemble little blue stars, what was it about them that so surprised astronomers when they were discovered?
Quasar is famous for being an intergalactic object which is billions of years away from the earth yet can still be seen, unlike the other star body, unlike giant galaxies.
Hence, the fact that quasars can be detected from distances where even the biggest and most luminous galaxies cannot be seen means that "they must be intrinsically far more luminous than the brightest galaxies."
This condition, including other related evidence gotten in recent years concerning our galaxy, has shown that quasars are probably the central nuclei of very distant, very active galaxies.
The surprising thing was that quasars and active galaxies have a lot of mass in the center of the very small volume of the space.
Therefore, the surprising thing about quasars was that due to this mass and energy they are 100 times more luminous than Milky Way which means they have high recession velocity and a very large amount of red-shifting.
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how much excess charge must be placed on a copper sphere 25.0 cm in diameter so that the potential of its center is 3.75 kv ?
The excess charge required to reach the given potential is 4.6 x 10-6 C.
What is potential?
Potential typically refers to a skill that is still being developed. The phrase is used in a wide range of disciplines, from physics to a social sciences, to describe things that are capable of changing in a variety of ways, from the straightforward release of energy besides objects to the realisation of abilities in people. In his works Physics, Ontology, Nicomachean Ethics, as well as De Anima, which deals with the human psyche, the philosopher Aristotelian incorporated this idea in to the his theory of potentiality as well as actuality, a pair of interconnected principles he used to analyse motion, causality, ethics, as well as physiology.
The charge required to reach the given potential is given by the formula
Q = 4πεrV
Where Q is the charge, ε is the permittivity of free space, r is the radius of the sphere, and V is the potential.
Plugging in the given values, we get
Q = 4π(8.85 x 10-12 F/m)(0.125 m)(3.75 x 103 V)
Q = 4.6 x 10-6 C
Therefore, the excess charge required to reach the given potential is 4.6 x 10-6 C.
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the nuclear force is group of answer choices long range and charge independent electromagnetic in nature. short range and charge dependent. short range and charge independent. long range and charge dependent
The term "short range forces" refers to nuclear forces. Due to the fact that nuclear forces only work over relatively short distances, such as 1 fermi or 10-15 m.
This means that option a) is the appropriate response.
What is the nature of nuclear force?
The nuclear force is electromagnetic in nature, with a vast range and no charge. charge dependent and limited range. limited range and independent of charging. extended and charge-dependent
A force known as the nuclear force interacts with the protons and neutrons of atoms. The force that holds protons and neutrons in a nucleus together is known as the nuclear force. Protons and protons, neutrons and neutrons, or neutrons and neutrons can all be affected by this force.
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I understand that the question you are looking for is:
The nuclear force is:
a) short range and charge independent electromagnetic in nature.
b) long range and charge dependent.
c)short range and charge independent.
d)long range and charge dependent
what observational evidence supports the galactic fountain model, which describes how gas cycles between the disk of the galaxy and regions high above the disk?
Along with cold gas that appears to be falling from the halo, we also observe hot gas far above the portion of the disk close to our solar system. This observational evidence supports the galactic fountain model, which describe how gas cycle between the disk of the galaxy and regions high above the disk.
What is the model for the galactic fountain?
The idea that hot, ionized gas that super bubbles blow off of the galactic disk and into the halo cools and returns to the disk.
What might start an interstellar fountain?
In this Milky Way graphic, the galactic fountain scenario is depicted. Supernova explosions in the galactic disc heat the interstellar medium and can force hot gas out of the disc, leading to the creation of so-called galactic fountains, which help build a halo of hot gas around the Milky Way.
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A car, mass 1225 kg, traveling at 105 km/h, slows to a stop in 53 m. What is the size of the force that acted on the car
The force acting on the car is 9700N.
First, the speed has to be converted to m/s units (SI)
105 km/h x 1000m/3600s ≅ 29 m/s
Then, using kinematics, we must determine the acceleration to determine the force. Kinematics is the area of mechanics that studies pure motion without taking into account the masses or forces at play, likewise known as applied kinematics. The concept of mechanical devices that change one type of motion into another.
[tex]V_{final^{2} } = V_{intial^{2} } + 2ax[/tex]
[tex]29^{2} = 0^{2} + 2 * a * 53[/tex]
a ≅ [tex]7.9\frac{m}{s^{2} }[/tex]
Using equation,
F = ma
F = 1225 x 7.9
9677 N ≅ 9700 N
Therefore, The force acting on the car is 9700N.
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what was the key discovery that led to the identification and definition of the intense radio emitters known as quasars?
Strong emission lines in their visible spectra were found to be hydrogen lines with very high redshifts.
What is quasars ?A nearly disastrous attempt to observe a far-off radio source results in the discovery of the first quasar, also known as a quasi-stellar astronomical phenomenon.
Quasars produce as much energy from a volume as small as our solar system as more than 100 regular galaxies.
According to NASA, "quasars are some of the most brilliant and energetic objects in the entire universe, with the ability to emit hundreds or even thousands of times the energy output of our galaxy.
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Kieran is driving his chevrolet spark around a level turn with a radius of curvature of 70. 9 m at a speed of 22. 4 m/s. Calculate the acceleration of the car.
The Chevrolet Spark accelerates at 7.1 m/s around a flat turn with a radius of curvature of 70.9 m at a speed of 22.4 m/s.
Describe acceleration.The rate at which the speed and direction of a moving object vary over time. A point or object going straight forward is accelerated when it accelerates or decelerates.
A is the centripetal acceleration, and V is the linear velocity.
Radius v = 22.4 m/s
Radius = 70.9 m
a = 22.42 / 70.9 m a
a = 7.1 m/s / s
Centripetal acceleration is the term used to describe the speed of a body rotating in a circle. A vector quantity, that is. It is represented as m/s2.
Consequently, the car's acceleration is 7.1 m / s
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