when xenon absorbs 801 kj/mol of energy, it is excited into a higher-energy state in which the outermost electron has been promoted to the next available subshell. The right electronic configuration for this excited xenon is [Kr] 4d¹⁰5s²5p⁴5d²
The energy required to completely remove the outermost electron from the excited xenon to form excited Xe+ is 369 kJ/mol, and here the energy absorb by the xenon is 801kj/mol which is twice the energy required to remove the 1st excited electron i.e. first ionisation energy, so 801kj/mol is the second ionisation energy of xenon.
The ground state electronic configuration is-
[Kr] 4d¹⁰5s²5p⁶
The excited electronic configuration of xenon is -
[Kr] 4d¹⁰5s²5p⁴5d².
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A descending elevator of mass 1,000 kg is uniformly decelerated to rest over a distance of 8 m by a cable in which the tension is 11,000 N. The speed v_1 of the elevator at the beginning of the 8 m descent is most nearly (A)4 m/s (B) 10 m/s (C) 13 m/s (D) 16 m/s E) 21 m/s
The speed [tex]V_{i}[/tex] of the elevator at the beginning of the 8 m descent is nearly 4 m/s. Hence, option A is the correct answer.
We are given that-
the mass of the elevator (m) = 1000 kg ;
the distance the elevator decelerated to be y = 8m ;
the tension is T = 11000 N;
let us determine the acceleration 'a' by using Newton's second law of motion.
∑Fy = ma
W - T = ma
(1000kg x 9.8 m/s² ) - 11000N = 1000 kg x a
9800 - 11000 = 1000
a = - 1.2 m/s²
Using the equation of kinematics to determine the initial velocity.
[tex]V_{f}[/tex] ² = [tex]V_{i}[/tex]² + 2ay
[tex]V_{i}[/tex] = √ ( 2 x 1.2m/s² x 8 m )
[tex]V_{i}[/tex] = √19.2 m²/s²
[tex]V_{i}[/tex] = 4.38 m/s ≈ 4 m/s
Hence, the initial velocity of the elevator is 4m/s.
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What type of outlet is recommended for installation in any area where water and electricity could come into contact?.
A special kind of outlet known as a Ground Fault Circuit Interrupter (GFCI) should be installed in area where water and electricity could come into contact. GFCIs are typical electrical safety devices which trips electrical circuits as soon as they detect ground faults or leakage of current.
What is Ground Fault Circuit Interrupt?Installing GFCIs, or ground fault circuit interrupters, is a unique type of outlet that should be used in locations where electrical items may come into contact with water. A GFCI is made to trip before a potentially fatal electrical shock occurs.
Anybody who enters the path of a leakage current will receive a fatal shock or be electrocuted. These outlets guard against fatal shock by immediately cutting off power to the circuit if the electricity entering the circuit and returning to it differ by even a little amount.
Any indoor or outdoor space where water might come into contact with electrical equipment should have a GFCI installed. GFCIs are currently required to be used in all kitchens, baths, garages, and outdoor areas according to the National Electrical Code.
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An electromagnetic wave transfers energy as it travels. During this process, what is the relationship between the magnetic and electric fields along its path?.
An electromagnetic wave transfers energy as it travels, then electric and magnetic fields in an EM wave are perpendicular to each other and also perpendicular to the direction of wave propagation.
What is electromagnetic wave?Waves that move through space and carry electromagnetic radiant energy is termed the electromagnetic waves. They include radio waves and microwaves and others.
During the transfer of energy, they are the sinusoidal movement that are perpendicular to each other in the direction of wave motion. They also show synchronized oscillations.
A changing magnetic field induces changing electric field and vice-versa as the two are linked. Changing fields form electromagnetic waves.
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the resistance in a series rcl circuit is doubled. (a) does the resonant frequency increase, decrease, or remain the same? (b) does the maximum current in the circuit increase, decrease, or remain the same?
The resistance in a series rcl circuit is doubled.:
(a) The resonant frequency will decrease. The resonant frequency of an RLC circuit is inversely proportional to the total resistance. As the resistance increases, the total resistance increases and the resonant frequency decreases.
(b) The maximum current in the circuit will remain the same. The maximum current in an RLC circuit is determined by the magnitude of the source voltage and the total resistance. As the resistance increases, the total resistance increases, but the source voltage remains the same, so the maximum current remains the same.
What is resistance?
The opponents to current flowing through an electrical circuit is measured by resistance. The Greek letter omega (Ω) represents the unit of measurement for resistance, known as ohms. Georg Simon Ohm (1784–1854), a German physicist who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance. Ohm's Law is attributed to him as its creator.
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if a household appliance is operating on 110 volts and electricity is flowing with a current of 0.2 amperes in this appliance, how many watts are consumed?
The electric power consumed by the household appliance is determined as 22 watts.
What is the electrical power consumed in the household?The electrical power consumed by the household appliance that is operating on 110 volts and whose electricity is flowing with a current of 0.2 amperes is calculated as follows;
P = IV
where;
I is the current flowing in the household applianceV is the voltage supplied to the household applianceP = 0.2 A x 110 V
P = 22 W
Thus, the electric power consumed by the household appliance is a function of current and voltage.
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1.how high will the station have to above the normal train track be for 100,000 kg train going 100 km/hr to come to a stop?
The station should be above 39.34m the normal train track.
mass = 10⁵kg
v=100 km/hr
v=27.77 m/s
using energy conservation
1/2m(v)²=mgh
h=(v)²/2g
h=(27.77)²/2×9.8
h=39.34
Mass, in physics, quantitative measure of inertia, an essential property of all dependents. It's far, in effect, the resistance that a frame of count number gives to a change in its speed or position upon the application of pressure. The more the mass of a frame, the smaller the alternate produced with the aid of a carried-out force.
The unit of mass within the worldwide machine of gadgets (SI) is the kilogram, which is defined in terms of Planck's regular, which is described as equal to 6.62607015 × 10-34 joule 2d squared.
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a 1,325 kg car rolls from rest down a 10.0 m tall hill. it then moves across a level surface and runs into a spring-loaded
To find maximum spring compression we assume no energy losses due to friction.
Here, the initial and final kinetic energy of the car is zero.
We know that, Total Energy= kinetic energy+ Potential Energy
Since the initial and final kinetic energy of the car is zero, here initial potential energy of the car-spring-earth system completely converts to elastic potential energy.
By the law of conservation of energy,
K1 +U1 = K2 + U2
i.e, (KE+PE, + PE) = (KE + PEg+PES) =
Here KE=0 and Potential energy after reaching ground(PE, = 0) =
0 + mgh + 0 = 0+0+1/2kx- 0
mgh = (1/2kx2) =
2= 2mgh/k
mg = 1325.(9.8) = mg = 1325.(9.8) = 12985N ) = =
We can round off 12985N to 13000N for easy calculation.
-2 2 = 2 * 13000 * 10 1.0 * 106 0.51m
(b) To find the maximum acceleration of the car after contact with the spring,
We apply Newton's 2nd law,
ma= (-kx = )
a = (-kx/n -m)
Multiply the above equation with g/g
a = a= (-kug/mg) = (-kxg/u
a = -(1.0 * 10%) * (0.51) * (9.8)/13000 = -380m/s? = *
a = 380m/s
A level curve is a plane curve where f has a constant value. A plane is a surface in XYZ space where f has a constant value. A level curve or surface is sometimes called a level set. The plane is the equipotential surface of the Earth's gravitational field. It is a curved surface and all its elements are perpendicular to the vertical line.
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A luge and its rider, with a total mass of 85 kg, emerge from a downhill track on to a horizontal straight track with an initial speed of 37 m/s. If a force slows them to a stop at a constant rate of 2.0 m/s 2
, (a) what magnitude F is required for the force, (b) what distanced do they travel while slowing, and (c) what work W is done on them by the force? What are (d) F, (e) d, and (f) W if they, instead,slow at 4.0 m/s 2
?
Force required is: -170N for the distance of 342.25m.
a) F=ma
F= - 85×2.0 = - 170
b) using energy
5×85×37²=170×d
d = 342.25 m
c) The work done would be given by
W= F×d
W =(−1.7×10²N)×(3.4×10²)
W=−5.8 × [tex]10^{4}[/tex] J
d) The net force on the mass would be
F = ma
F = -340 NF
-ve sign indicates that the force acts opposite to the direction of motion.
e) Using the kinematic equation
v²= u² + 2ad
d= 1.7 × 10² m
f) The work done would be given by
W= F×d
W= -5.8 × [tex]10^{4}[/tex] J
-ve sign indicates that the energy of the rider decreases by the force
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A pulse is created on a spring with a fixed end. What happens to the wave after it hits the fixed end? a. It reflects, remains upright, and maintains the same velocity. B. It reflects, inverts, and maintains the same velocity. C. It reflects, remains upright, and changes velocity. D. It reflects, inverts, and changes velocity.
It reflects, inverts, and maintains the same velocity.
What is velocity?
The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar number. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.
"It reflects , reverts and maintains the same velocity" is the one among the following that describes what happens to the wave after it hits the fixed end. The correct option among all the options that are given in the question is the second option or option "b". I hope the answer has come to your help.
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a 50.0-kg skater is traveling due east at a speed of 3.00 m/s. a 70.0-kg skater is moving due south at a speed of 7.00 m/s. they collide and hold on to each other after the collision, managing to move off at an angle θ south of east, with a speed of vf. find (a)the angle θ and (b)the speed vf, assuming that friction can be ignored.
a 50.0-kg skater is traveling due east at a speed of 3.00 m/s. a 70.0-kg skater is moving due south at a speed of 7.00 m/s. they collide and hold on to each other after the collision, managing to move off at an angle θ south of east, with a speed of vf. find
(a)the angle θ and
(b)the speed vf, assuming that friction can be ignored. 4.28 m/s
I used tan theta=(opposite/adjacent) but I got 66.8 degrees as my answer with 7 as the opposite and 3 as the adjacent, whereas my answer booklet says 73.0 degrees. I thought velocities could be treated as vectors.
someone who skates. same as skateboarderSee skateboarder. British informal a young man or woman who usually wears saggy garments and spends lots of time skateboarding.
travel is the motion of human beings among distant geographical places. journey can be performed by using foot, bicycle, vehicle, educate, boat, bus, airplane, ship or other approach, with or without baggage, and can be one way or spherical ride.
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he three blocks (from left to right in the figure) have masses of 3.38 kg, 0.702 kg and 7.80 kg. the leftmost block has a velocity of 3.51 m/s toward the right, the center block is stationary, and the rightmost block as a velocity of 2.79 m/s toward the left. assuming movement toward the right is positive, what is the velocity of the center-of-mass of this system as pictured (prior to collision)? give your answer with the appropriate sign.
-0. 833m/s is the velocity of the centre-of-mass of this system, prior to the collision.
What is Centre-of-mass?
The unique location where the weighted relative position of the distributed mass accumulates to zero is known as the centre of mass of a distribution of mass in space (also known as the balance point). At this location, a force can be applied to produce a linear acceleration alone, not an angular acceleration.
What is Collision?
In physics, the abrupt, violent meeting of two bodies in direct contact is referred to as an impact. Examples of such bodies are two pool cues, a golf club and a ball, a hammer and a nail head, two railroad cars when linked, or a falling object and a floor. The force and the amount of time the objects are in touch, in addition to the materials the two objects are made of, have an impact on the outcome of the impact. It is generally knowledge that a hard steel ball dropped on a steel plate would rebound almost to the original position from where it was dropped, while a ball made of putty or lead will not.
What are the Calculations?
There are typically 3 masses named
m1= 3.38kg
m2= 0.702kg
m3= 7.80kg
Here m2 stays stationary hence its velocity (v2= 0)
Let the final velocity be V
Value of m1 + m2 + m3 = 3.38 + 0.702 + 7.8 = 11.882kg
A/Q V= m1v1/11.882 + m2v2/11.882 + m3v3/11.882
m1v1/11.882= 3.38 * 3.51/11.882= 0.998
m3v3/11.882= 7.8 * (-2.79) /11.882= -1. 831 ( here -ve sign is taken as the velocity of m3 is towards the left which is negative)
Hence, after simplifying V= m1v1/11.882 + m2v2/11.882 + m3v3/11.882 the final answer is -0. 833m/s
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brainly a child on a swing set swings back and forth with a period of 3.3 s and an amplitude of 25°. what is the maximum speed of the child as she swings?
Maximum speed of the child as she swings is 2.23 m/s.
Step by Step Calculation:T=3.3 s is the oscillation's time period.
The swing's greatest angle is 25° (max).
The swing's bottom will have the following kinetic energy:
k=12mv2...........(1)
The mass in this situation is m, and the speed is v.
The potential energy change is expressed as,
∆U=mgL1-cosθmax...............(2)
Here, L is a string's length and g is the acceleration caused by gravity. L is given as,
L=gT24π2
Combine equation (1) with (2)
12mv2=mgL1-cos, maxv=2g, maxv=gT24, maxv=g2T22, maxv=9.8 m/s
22.33 m/s, 22.31 s22.31 cos25°
Therefore, the child's top speed is 2.23 m/s.
What is Oscillation ?The process of any quantity or measure fluctuating repeatedly about its equilibrium value in time is known as oscillation.A periodic change in a substance's value between two values or around its central value is another way to define oscillation.To learn more about Oscillation refer to:
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A current-carrying ohmic metal wire has a cross sectional area that gradually becomes smaller from one end of the wire to the other. The current has the same value for each section of the wire, so charge does not accumulate at any one point. How does the resistance per unit length vary along the wire as the area becomes smaller?.
The cross-sectional area decreases, so the resistance per unit length, increases
What is resistance ?The limitation of current flow in an electrical circuit is measured in terms of resistance. The ohm, or the Greek letter omega, stands for the unit of measurement for resistance.
According to the given information
We know that
Resistance of the wire is directly proportional to length of the wire and inversely proportional to the area of the wire
So,
R ∝ [tex]\frac{L}{A}[/tex]
Proportionality constant ρ = resistivity constant
R = ρ[tex]\frac{L}{A}[/tex]
So If the cross sectional area decreases , Resistance per unit length increases
what is the difference between the average temperatures of venus and mercury? 1 kelvin 1 degree celsius 178 degrees celsius 274 kelvin
The difference between the average temperatures of venus and mercury : Mercury - 333°F (167°C) Venus - 867°F (464°C)
Is Venus hotter than Mercury?The hottest planet in our solar system is Venus, despite Mercury being closest to the Sun. There are sulfuric acid clouds and a lot of carbon dioxide in its dense atmosphere. The atmosphere absorbs heat, giving the surface the impression of being in a furnace.It is known that the sunny side may become as hot as 750 to 800 degrees Fahrenheit, while the temperature at night can get as low as -330 degrees. Mercury's ambient temperature is a pleasant 354 degrees Fahrenheit.It seems that the surface temperature on Venus varies between 820 and over 900 degrees Fahrenheit. Lead can melt at temperatures as high as 847 degrees Fahrenheit on the average surface.Learn more than average temperatures of venus & mercury refer to :
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during an isothermal compression of an ideal gas, 200 j of heat must be removed from the gas to maintain constant temperature. how much work is done by the gas during the process?
Work done by the gas during the process is -200J.
Work done can be defined as the product of force and distance travelled by the force.
For an isothermal process, temperature is constant and thus the heat transfer into and out of the system happens slowly so that the system is in thermal equilibrium.
Also, from the first law of thermodynamics, the change in internal energy (ΔU) of a closed system is equal to the sum of the heat transferred (Q) and the work done (W) by the system. i.e
ΔU = W + Q
The internal energy is dependent on the temperature of the system and since this temperature is constant the change in internal energy is zero (0).
i.e
ΔU = 0
putting the values in the equation of FLOT
⇒ 0 = W + Q
⇒ W = -Q
Therefore, for such process, the work done is the negative of the heat transferred (heat removed in this case).
Q = 200J
W = -200J
Therefore, the work done is -200 J
The value is negative to show that the process is a compression meaning that work is done by the surrounding on the gas.
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calculate the maximum force, in newtons, exerted by the blood on an aneurysm (a ballooning in a major artery), given that the effective area of the aneurysm is 18.5 cm2.
36.99N
Given
Maximum blood pressure P = 150 mm
Effective area of the aneurysm a = 18.5 cm2.
Expression for the maximum force exerted by blood on an aneurysm is,
f =P * a = (150 mm Hg* (133.322 N/m²/ 1 mmHg)) * ( 18.5 cm² * (1 m² /10000cm²)) = 36.99N
The pressure is computed as the ratio of acting force on an object and the surface area of the object where the force is directed. The pressure is usually measured in terms of Pascal and blood pressure in mm of Hg.
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a 4 kg ball is thrown straight up in the air. what is the net force acting on the ball when it reaches its maximum height?
A 4 kg ball is launched vertically into the air. The net force exerted on the ball at its highest point is 39.24N.
What is net force?
In mechanics, the net force is the vector sum of forces acting on a particle or object. The net force is a single force that replaces the effect of the original forces on the particle's motion.
Given data
Ball mass m=4 kilogram
Gravitational acceleration is 9.81 m/s^2 , or g.
The location of the ball has no bearing on the net force applied to it in vertical projectile motion. As a result, the ball experiences a net downward force throughout its travel, and the size of this force is equal to the mass times the acceleration caused by gravity.
[tex]\begin{aligned}& F_{\text {net }}=m g \\& F=4 * 9.81 \\& F=39.24 N\end{aligned}[/tex]
Therefore, the ball is subject to a net force of 39.24 N.
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Which statement best describes the relationship between changes in air pressure and wind speeds?
Responses
When a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.
When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure.
When a high- and a low-pressure air mass are close together, air moves slowly from high to low pressure.
When a high- and a low-pressure air mass are far apart, air moves quickly from low to high pressure.
The best statement that best describes the relationship between changes in air pressure and wind speeds is when a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.
The greater the increase or decrease in pressure, the faster the winds move. When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure. When a high- and a low-pressure air mass are close, the air moves slowly from a point of high to low pressure. When a high- and a low-pressure air are far apart, the air moves rapidly from a region of high pressure to a region of low pressure.
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Two units of measurement for energy are calories and joules. The measurement of 355 J is the same amount of energy as ___________.
Two units of measurement for energy are calories and joules. The measurement of 355 J is the same amount of energy as 84.84 calories.
Energy in physics is the ability to perform work. Different shapes, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc., may be assumed by it. Other examples of energy being transferred from one body to another include heat and work. Energy is always distributed after it has been transported in accordance with its type. Thus, heat transfer could result in thermal energy, whereas work could result in mechanical energy.
Motion is a trait shared by all forms of energy. For instance, if a body is moving, it has kinetic energy. Due to the object's design, which incorporates potential energy, a tensioned object, like a spring or bow, has the ability to move even when at rest.
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how does the total mechanical energy of the two block system after the collision comapre to the total mechanical energy of the two block system before te collision
The total mechanical energy before the collision of the block system will remain the same to the total mechanical energy after the collision.
In the field of science, mechanical energy can be described as the kind of energy that is present at the time of motion or at the time of rest.
Hence when two block systems collide, the mechanical energy can change from one form to another but the total energy will remain the same.
This is because, according to Newton, energy can change form from one form to another but the total energy remains the same.
Hence, in the block system, the mechanical energy will remain the same after collision.
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Nuclear decay occurs according to first-order kinetics. What is the rate constant for radon-220, which has a half-life of 55. 6 seconds?.
The rate constant for radon-220, which has a half-life of 55. 6 seconds is 0.012.
We know that half life of first order reaction is : [tex]t_{1/2} = 0.693/k[/tex]
where k = rate of reaction.
Given half life = 55.6 sec
Putting this value in above equation we get k = 0.012
i.e. The rate constant for radon-220, which has a half-life of 55. 6 seconds is 0.012.
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if the pressure reading of your pitot tube is 12.0 mm hg at a speed of 210 km/h, what will it be at 830 km/h at the same altitude? assume the density of air at sea level.
47.4 mm hg is the pressure at 830 km/h at the same altitude
Bernoulli's principle refers to this inverse relationship between pressure and speed at a particular point in a fluid. Principle of Bernoulli
P1=12 mm hg
v1=210 km/h
v2=830 km/h
p2=?
P1/V1=P2/V2
P2=P1V2/V1
P2=12×830÷210
P2=47.4 mm hg
The definition of pressure is force/area. Divide the weight of the snow by the surface area of the roof to show the pressure that snow puts on it. In physics, gases are a common source of pressure. The lack of pressure is referred to as a "vacuum". Since "nature abhors a vacuum," people have long believed that vacuums are improbably uncommon and unnatural. This is not actually the case.
The quantity of pressure units is absurd. The torr or mmHg units are frequently used. The height of a mercury column is the only topic of discussion. There are 760 torr, or mmHg, in the atmosphere. You might also take a look at mmH2O, which employs a related concept.
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what step in the laser printing process is responsible for conditioning the imaging drum in preparation for receiving an electrical charge?
Yes this information is correct about electrical resistance.
What is electrical resistance?Electrical resistance is a force that counteracts the flow of current.
Sol- when two lamps are connected in parallel to a battery, the total electrical resistance that the battery senses is more than the resistance of either . Beacuse In a parallel circuit each bulb is in its own circuit. As bulbs are added the resistance in the circuit decreases since each circuit is another pathway for electrons to move from one end of the circuit to the other.when two lamps are connected in series to a all the battery the electricals resistance that the battery's senses is the more than the resistence of either lamp.
As each bulb is connected in parallel to the battery of the , each has thatbsame potential difference across by to the it as the all of voltage of across the battery of to the terminals. All of other to the potential by differences are zero, as we know all the wires have to the zero resistance.
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given a diffraction grating with 300 lines per mm, what is the spacing d between lines? as- suming that the lines in the grating are manufactured with a tolerance of 1%, what is the estimated uncertainty in the line spacing d
The spacing between the lines is 3.33 X 10⁻³ mm and the estimated uncertainty in the line spacing is 3.33 X 10⁻⁵ mm.
Diffraction grating = 300 lines/mm
Thus,
The spacing between the lines = d =
= d = 1/300 lines/mm
= d = 3.33 X 10⁻³ mm
A grating consists of many slits, or lines, close together. In a grating, the spacing between adjacent lines is constant. Gratings are also used to produce interference patterns. When waves are incident on a grating all of the lines act as coherent sources of the waves.
Now, the uncertainty in the lines spacing is = Δ d =
= Δd = d (tolerance)
= Δd = 3.33 X 10⁻³ X 1%
= Δd = 3.33 X 10⁻⁵ mm
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determine the moments of inertia of the rectangular area about the x- and y-axes and find the polar moment of inertia about point o.
The definition of moment of inertia allows for the following results for the moment of inertia with respect to each axis:
1-Iₓ = m r²
2-Iy=9m r²
3-Iz=10m r².
What exactly is moment interia?
The expression yields the moment of interia as a scalar quantity.
Sol-
I =∫ r² dm
Where I is the moment of inertia, m is the body's mass, and r is the distance from the axis of rotation.
In the case of point particles, the expression is as follows:
I = m r²
In this case, we calculate along each coordinate axis.
a) The distance is x = r with respect to the x axis, and the moment of inertia is
Iₓ = m r²
indicate the distance in relation to the y-axis
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the temperature of an object is 172°c. what is the peak wavelength (in µm) of the radiation emitted by the object at this temperature?
Peak wavelength of the object is 6.49 µm.
Peak wavelength is the wavelength at which the line is brightest.
At optical wavelengths, a spectrograph can measure the amount of light emitted by stars.The wavelength of the peak emission depends on the temperature of the object emitting the radiation.Mathematically, T = 2.89 * [tex]10^{-3}[/tex] / λmaxA higher temperature causes the wavelength of the peak emission to be at a shorter wavelength. As the temperature increases, the amount of energy emitted (radiation) increases, while the wavelength of the peak emission decreases.Temperature of the object = 172°c
Temperature in kelvin = 172 + 273 = 445 K
λmax = 2.89 * [tex]10^{-3}[/tex] / T
λmax =2.89 * [tex]10^{-3}[/tex] / 445
λmax = 6.49 * [tex]10^{-6}[/tex] m
λmax = 6.49 µm
The peak wavelength of the radiation emitted by the object at temperature 172°c is 6.49 µm.
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light of intensity so and polarized horizontally passes through three polarizes. the first and third are horizontal, but the second is oriented 0.62832 rad to the horizontal. in terms of so , what is the intensity of the light that passes through the set of polarizers?
The Light Intensity that passes through the set of polarizers is 9.99939871 W/m
It takes complicated mechanisms to control how light moves through media. As an electromagnetic wave, light interacts with the electric charge that permeates all matter. The oscillatory motion of electric charges along a single dimension can actually be significantly restricted by creating a solid substance.As a result, charges respond to electric fields in one direction—or more specifically, to their individual components in one direction—while not responding in the opposite direction.[tex]I=icos\alpha[/tex]
I=10 cos 0.62832
=9.99939871 W/m
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A nonrelativistic electron and a nonrelativistic proton have the same de Broglie wavelength. Which of the following statements about these particles are accurate? (There may be more than one correct choice.)A) Both particles have the same speed.B) The electron has more momentum than the proton.C) The electron has more kinetic energy than the proton.D) Both particles have the same kinetic energy.E) Both particles have the same momentum.
The de Broglie wavelength of a nonrelativistic electron and a nonrelativistic proton is the same, they both have the same momentum, and the electron has higher kinetic energy than the proton.
A subatomic particle having a poor standard electric charge is the electron. Because they lack any discernible additives or substructure, electrons are considered to be fundamental particles and belong to the main technology of the lepton particle's own family. The radius of the electron is predicted to be around 2 10-10 cm using the best values for the wavelength and the scattering by a tough X-ray and?-ray matter.
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a 915 kg car goes over a hill of circular arc. if the radius of the curve is 43 m, how fast can the car travel without leaving the road at the top of the arc?
The car can travel at 20.5 m/s (74 km/hr). Any faster, and it will leave the road.
What is speed?
Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object travels along a path. In other words, velocity is a vector, whereas speed is a scalar value.
According to the question:
Two forces—gravity and the normal force of the road—are acting on the car as it crests the hill. These combined exert a net centripetal force, which will cause the car to travel in a circular arc.
[tex]$$\vec{F}_c=\vec{F}_g+\vec{F}_N$$[/tex]
Next, realize that "without leaving the road" actually refers to "just at the point where the car is going to leave the road" and that this corresponds to the condition FN = 0.
This means that our equation becomes
[tex]$$F_c=F_g$$[/tex]
and that gravity alone will determine the radius of the path the car will follow.
Substituting [tex]$F_c=\frac{m v^2}{r}$[/tex] and [tex]$F_g=m g$[/tex], we get
[tex]$$\frac{m v^2}{r}=m g$$[/tex]
Since we don't observe small, light automobiles flying airborne more frequently than larger ones, we can cancel the mass, which means that all cars traveling at this speed will follow the same course regardless of mass.
[tex]$$\begin{aligned}& \frac{v^2}{r}=g \\& v=\sqrt{g r}\end{aligned}$$[/tex]
After Substituting the values:
[tex]$$v=\sqrt{(9.8)(43)}=20.5 m/s}$$[/tex]
So, the car can travel at 20.5 m/s (74 km/hr).
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g a 4 kg ball is thrown straight up in the air. what is the net force acting on the ball when it reaches its maximum height? what is the ball's acceleration at this point?
The weight of the ball is the only force pushing down on a ball that has been tossed into the air approximately half its maximum height.
How does science define force?At this point, referring to a force as a push or a pull is perfectly appropriate. An object does not "have in it" or "contain" a factorOne thing experiences a force from another. The idea of a force encompasses both living and non-living things.
What is an example of force?An illustration would be to push or forcefully shove a door. As a vector quantity, effort has both magnitude and a direction.. According to Newton's second law, force equals the "net of a body's natural mass and acceleration."
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