Normal stress in CG is 13.58 Ksi
When the deforming force is applied to an item, it deforms. The object will generate an opposing force from within to revert to its previous dimensions and shape. This restoring force will be applied in the opposite direction and have the same magnitude as the deforming force.Stress is a term used to describe how much of this restorative force is produced per unit area of the material. When the path of the deforming force is perpendicular to the body's cross-sectional area, stress is said to be normal stress. If the wire's length or the body's volume changes, the stress level will remain normal.
Using the portion EFCGB as a free body ,
∑[tex]F_{y} =0 :[/tex]
[tex]\frac{3}{5}F_{AE}[/tex]-3600=0
[tex]F_{AE}[/tex]=6000 lb
Using beam EFG as a free body ,
+[tex]M_{F} =[/tex]0 ,
-(4) [tex]\frac{3}{5}F_{AE}[/tex] + (4)[tex]\frac{3}{5}F_{cc}[/tex] = 0
[tex]F_{cc} =F_{AE} =[/tex]6000lb
cross section area of member CG :
[tex]A_{CG}=\frac{\pi}{4} d^{2}[/tex]= [tex]\frac{\pi}{4} (0.75)^{2}[/tex]
[tex]A_{CG}=0.44179 \:in^{2}[/tex]
Let the normal stress is 'B'
Normal stress in CG
[tex]B_{CG} =\frac{ F_{CG} }{ A_{CG} }[/tex] = [tex]\frac{6000 }{0.44179 }[/tex] = 13,580 psi
[tex]B_{CG} =[/tex] 13.58 Ksi
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ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements. If a vector that is 3 cm long represents 30 km/h, what velocity does a 5 cm long vector which is drawn using the same scale represent?
50kmh
60kmh
100kmh
the differential energy balance for a steady-state, open-system with one- dimensional flow across the boundaries, a single inlet, a single outlet, and negligible variation of height, density, and enthalpy across either inlet or outlet area is
The differential energy balance for a steady-state, open-system with one dimensional flow across the boundaries, a single inlet, a single outlet, and negligible variation of height, density, and enthalpy across either inlet or outlet area is gdz+αvdv+ dH=δQ+δWs.
where δQ and δWs denote inexact differentials (path dependent) of Q and Ws and the rest of the notation is consistent with the notation used in the lecture
Energy BalancesIn addition to analyzing the transfer of mass, chemical engineers are also concerned
with the transfer of energy. Mass transfer problems are typically coupled with energy
transfer. General property of energy balance is the same as mass balance.
The first law of thermodynamics is a basis for energy balance, and it states that energy
is neither created nor destroyed. Energy can only be converted between forms.
Energy can be input or output from a system by:
- Mass transfer (mass carries energy),
- Its heat Q ; energy flow in response to ΔT (temperature difference),
- Its work W ; energy flow in response to any driving force besides ΔT , e.g. Force,
torque, voltage difference.
System’s mass accumulates energy as kinetic energy Ek , potential energy Ep , internal
energy U.
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1. Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement.
I: y = 0.12 cos(3x + 2t)
II: y = 0.15 sin(6x - 3t)
III: y = 0.23 cos(3x + 6t)
IV: y = -0.29 sin(1.5x - t)
Which of these waves have the same speed?
2. Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement.
I: y = 0.12 cos(3x - 21t)
II: y = 0.15 sin(6x + 42t)
III: y = 0.13 cos(6x + 21t)
IV: y = -0.27 sin(3x - 42t)
Which of these waves have the same period?
I and III have the same period, and also II and IV have the same period.
The equation of wave is given by;
y = Asin(kx - ωt)
or
y = Acos(kx - ωt)
(depending or the waveform)
where;
A denotes the amplitude of the wave in meters
y(x,t) is the displacement in meters
k = 2π/λ is the propagation constant
ω = 2π/T is the expression for angular frequency in radian per seconds
T = 2π/ω;
T is the time period in seconds
+ve(positive) and -ve(negative) signs show the direction of the wave.
I) Comparing y = 0.12cos(3x - 21t) with the general equation, we get the values as;
ωt = 21t
ω = 21
2π/T = 21
T = 2π/21 seconds
II) Comparing y = 0.15 sin(6x + 42t) with the general equation, , we get the values as;
ωt = 42t
ω = 42
2π/T = 42
T = 2π/42 seconds
III) Comparing y = 0.13 cos(6x + 21t) with the general equation, we get the values as;
ωt = 21t
ω = 21
2π/T = 21
T = 2π/21 seconds
IV) Comparing y = -0.23 sin(3x - 42t) with the general equation, we get the values as:
ωt = 42t
ω = 42
2π/T = 42
T = 2π/42 seconds
Therefore, we can state that I and III have the same period, II and IV have the same period.
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At what speed must it travel to have a
momentum of 7 x 105 kg · m/s?
Answer in units of m/s.
To gain momentum of 7*105 kg.m/s, the truck must travel at a speed of 46.67 m/s.
What is momentum?Momentum is defined in Newtonian mechanics as the product of an object's mass and velocity. It is a vector quantity with magnitude and direction. It is measured by "mass velocity," because momentum depends on velocity, and it also depends on the direction of the body's motion. Momentum is a vector quantity because velocity is a vector and mass is a scalar quantity. Momentum equals mass multiplied by velocity. Momentum is defined as "mass moving." Because all objects have mass, if an object moves, it has momentum - its mass is in motion.
Here,
P=mv
P=7*10^5 Kg.m/s
m=15000 kg
7*10^5=15000v
v=700/15
v=46.67 m/s
The truck must travel at the speed of 46.67 m/s to gain the momentum of 7*10^5 kg.m/s.
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five point charges placed on a straight line, at intervals d= 2 cm. We give Q3=Q5 = 8C and Q4 = 4 . For what values of q1 and q2 is the resultant electric force exerted on each of the other three charges zero?
The values of q1 and q2 in which the resultant electric force exerted on each of the other three charges zero is - 4C.
What is the value of q1 and q2?
The value of charges q1 and q2 is calculated by applying the formula for electric force as shown below.
F = (kqₙqₓ) / (d²)
where;
K is Coulomb's constantq is the magnitude of the chargesd is the distance between the chargesIf the force exerted on each of the other three charges is zero, then
F₁₃ + F₃₄ = 0
F₂₃ + F₃₄ = 0
F₁₃ = (k x q₁ x 8) / (d²)
F₂₃ = (k x q₂ x 8 ) / (d²)
F₃₄ = (k x 8 x 4 ) / (d²)
F₁₃ = - F₃₄
(k x q₁ x 8) / (d²) = - (k x 8 x 4 ) / (d²)
8q₁ = - 32
q₁ = -32 / 8
q₁ = - 4 C
F₂₃ = - F₃₄
(k x q₂ x 8 ) / (d²) = - (k x 8 x 4 ) / (d²)
q₂ = - 4 C
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A 200 kg bumper car travelling at 1 m/s hits a 300 kg bumper car travelling at "-2" m/s. If the velocity of 200 kg bumper car after the collision is "-3" m/s and the force exerted on the 200 kg bumper car was 500 N, what was the magnitude of the force exerted on the 300 kg bumper car?
A.) 200 N
B.) 500 N
C.) 750 N
D.) 333N
The magnitude of the force exerted on the 300 kg bumper car is 500 N.
option B.
What is Newton's third law of motion?
Newton's third law of motion states that for every action force, there is an equal and opposite reaction force. That is action force and reaction force are equal in magnitude but opposite in direction.
Mathematically, the formula for Newton's third law of motion is given as;
Fa = - Fb
where;
Fa is the force exerted on 200 kg bumperFb is the reaction force of 300 kg bumperFb = - 500 N
| Fb | = 500 N
Thus, the force exerted by 200 kg bumper is to the force exerted by 300 kg bumper.
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Part A If the switch in the circuit has been in position a for a long time, find the initial voltage across the capacitor at t = 0-
Vs = 4.0 V , Is = 38.0 mA , R1 = 21.0 kΩ , R2 = 80.0 kΩ , R3 = 92.0 kΩ , R4 = 88.0 kΩ , R5 = 16.0 kΩ , R6 = 36.0 kΩ , C = 60.0 μF .
Part B - Find the time constant, τ, after t = 0
Vs = 85.0 V , Is = 28.0 mA , R1 = 60.0 kΩ , R2 = 28.0 kΩ , R3 = 3.0 kΩ , R4 = 2.0 kΩ , R5 = 55.0 kΩ , R6 = 64.0 kΩ , C = 2.0 μF .
Part C - Find the Norton equivalent current seen by the capacitor after t = 0
Vs = 83.0 V , R3 = 63.0 kΩ , R4 = 100.0 kΩ , R5 = 91.0 kΩ , R6 = 14.0 kΩ , C = 99.0 μF .
Part D - Write an expression for the capacitor voltage, v(t), for t ≥ 0
Express your answer as an algebraic expression in terms of Vs, Is, R3, R5, R6, C.
Part E - Write an expression for the power dissipated in the resistor R 6 for t ≥ 0+
Express your answer as an algebraic expression in terms of Vs, Is, R3, R5, R6, and C.
since the inductor current and capacitor voltage cannot change .
What is initial voltage across the capacitor?
The initial capacitor voltage was VC(0+) = 0 V. The time constant is τ = 10 s. The final value of the capacitor voltage, when the capacitor has gone to an open circuit, is VC,F = 5 V.The voltage across the capacitor can be found through, V = Q/C. The voltages across the other elements can be found with the help of Kirchoff's first law. The current through a capacitor must always decay and end up at zero, since charge can not contiuously flow through a capacitor.The initial voltage is actually the internal voltage before the source impedance. For the swing bus generator (G1) below, the initial voltage is the voltage of the source before the voltage drop across its internal impedance.To learn more about capacitor refers to:
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three solid plastic cylinders all have radius 2.45 cm and length 6.36 cm. find the charge of each cylinder given the following additional information about each one. Cylinder (a) carries charge with uniform density 15.3 nC/m2 everywhere on its surface. Cylinder (b) carries charge with uniform density 15.3 nC/m2 on its curved lateral surface only. Cylinder (c) carries charge with uniform density 490 nC/m3 throughout the plastic.
The charge on cylinder (a) with the given uniform density is calculated to be 0.16366 m².
The charge on cylinder (b) with uniform density on curved lateral surface only is calculated to be 0.1499 m².
The charge on cylinder (c) with the given uniform density is calculated to be 0.049 nc.
Radius of the cylinder = 2.45 cm = 0.0245 m
Length = 6.36 cm = 0.0636 m
Charge density λ = 15.3 nC/m²
Surface area of the cylinder = 2π r L + 2π r² = 2π × 0.0245 × 0.0636 + 2π × 0.0245 m² = 0.0098 + 0.15386 m² = 0.16366 m²
To find the charge, we know the relation as, Q = λ A = 15.3 × 0.16366 = 2.51 nc.
The charge on cylinder (b) with uniform density on curved lateral surface is
Here, A = 2π r L = 0.0098 m²
Q = λ A = 15.3 × 0.0098 = 0.1499 nc
The charge on cylinder (c) with uniform density on uniform density is 490× 0.0636 = 31.164 × 2π r = 0.049 nc
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think about how systems thinking applies to a car. using the systems thinking model, drag each item listed below to the correct location on the figure.
Complete Question: Think about how systems thinking applies to a car. Use systems thinking model and drag options to correct location.
Input, Process, Output, Feedback
Engine, Pedal, Gas, Warning light
Systems thinking is a way of understanding how different components of a system interact with one another. In the case of a car, the systems thinking model can be applied to understand how different components work together to produce the desired outcome of driving the car.
Input: Gas - This refers to the fuel that goes into the car. The car cannot operate without fuel, so it is considered an input to the system.
Process: Engine - This is the component of the car that converts the fuel into energy, which powers the car. The engine is the process that takes place within the car to make it move.
Output: Pedal - This is what the driver uses to control the speed of the car. The pedal is the output of the car's movement, as it is what the driver uses to drive the car.
Feedback: Warning light - This is a mechanism that provides feedback to the driver about the state of the car. For example, if the gas tank is low, a warning light will come on, providing feedback to the driver that they need to refuel the car.
In summary, Systems thinking model can be applied to a car in order to understand the relationship between different components of the car. Gas is the input, engine is the process, pedal is the output, and warning light is the feedback. These components work together to produce the desired outcome of driving the car.
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what is the magnitude o the centripetal acelartion of the car as it goes around the cruve descibed in the passage
The amount of the car's centripetal acceleration as it follows the curve given in the paragraph is -v2/r = a.
What is force?A force is an effect in physics that may modify the velocity of an item. A force can cause a mass item to change its velocity, or accelerate. Intuitively, force may be characterized as a push or a pull. A force is a vector quantity since it has both magnitude and direction. The term "force" has a specific meaning in science. At this level, it is quite acceptable to refer to a force as a push or a pull. A force is not something that an item possesses or possesses. Another item applies a force to another. The concept of a force is not restricted to living or non-living entities.
Here,
In general, Force = ma where m is mass and a is acceleration. The specific form for Centripetal Force = -mv2/r.
Equate the two equations for Force:
-mv²/r = ma
-v²/r = a
The magnitude of the centripetal acceleration of the car as it goes around the curve described in the passage is -v²/r = a.
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How do you get c and d?
A positive charge of magnitude Q1 = 0.85 nC is located at the origin. A negative charge Q2 = −7.5 nC is located on the positive x-axis at = 15.5 cm from the origin. The point P is located at = 6.5 cm above the charge Q2.
a) Sketch the directions of Q1, Q2, and on the figure. Make sure to label your arrows.
b) Determine the magnitudes of E1 and E2 at point P.
c) Determine the x and y components of E1 at point P.
d) Determine the x and y components of E2 at point P.
e) Determine the magnitude and direction of the net electric field at point P due to the two charges.
Answer:
of the net electric field at point P due to the two charges.
Explanation:
question 12 of 44reportwhich choice most accurately and effectively represents the information in the graph?choose 1 answer:no changeto 12 degrees fahrenheit.to their lowest point on december 13.to 10 degrees fahrenheit and stay there for months.
There was no provision made in them for the gap between slave and free states. There is no benefit to taking the SAT or the ACT over the other test because both are accepted by all US schools and universities.
What factors led Fahrenheit to chose 0 degrees?Germany's Daniel Gabriel Fahrenheit, a scientist, first proposed the Fahrenheit scale in 1724. Fahrenheit developed his scale by measuring three things using a mercury-filled tube: The freezing point of the water was established by him.
How quickly can you change C into F?Here is an easy approach you may use to quickly convert between Celsius and Fahrenheit: The temperature is converted to degrees Fahrenheit by multiplying the Celsius temperature by 2, then by 30.
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A 20 g ball of clay traveling east at 2.0m/s collides with a 30 g ball of clay traveling 30∘ south of west at 1.0m/. What is the speed of the resulting 50 g blob of clay? What is the direction of the resulting 50 g blob of clay?
The speed of the resulting 50 g blob of clay is 0.5003 m/s and the direction is 87.70⁰ south-west.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Appling conservation of momentum along north direction:
20 g × 2.0 m/s + 30 g × (- 1.0 m/s × sin30°) = (20 g + 30 g)× v₁
v₁ = 0.5 m/s
Appling conservation of momentum along east direction:
20 g ×0 m/s + 30 g × (- 1.0 m/s × cos 30°) = (20 g + 30 g)× v₂
v₂ = - 0.02 m/s.
Hence, the speed of the resulting 50 g blob of clay is
= √{(0.5)²+(0.02)²} m/s
= 0.5003 m/s.
The direction of the resulting blob of clay with east direction is =
tan⁻¹(0.5/(-0.02))
= - 87.70⁰
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in video 2 for chapter 17, they show a block of glass with 2 reflections of light. why are there two?
The second reflection is created as the light frvl as it passes through the block. Multiple pictures are created via surface diffraction.
Simply put, what is diffraction?The act of light spreading out after passing through a narrow area or bending around an object is known as diffraction. The dispersion of light waves is a topic covered in physics classes. Sound, television, and water waves are all susceptible to diffraction.
In a light wave, what is diffraction?Diffraction is the small bending of light that occurs when it travels around an object's edge. The degree of bending is influenced by the wavelength of light's size in relation to the opening's size. When the opening exceeds the wavelength of the light, the
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agriculture 1 of 1 question 2 with 1 blank air 1 of 1 question 3 with 1 blank battery 1 of 1 question 4 with 1 blank climate 1 of 1 question 5 with 1 blank electric energy 1 of 1 question 6 with 1 blank gasoline 1 of 1 question 7 with 1 blank material 1 of 1 question 8 with 1 blank ocean 1 of 1 question 9 with 1 blank option 1 of 1 question 10 with 1 blank planet 1 of 1 question 11 with 1 blank problem 1 of 1 question 12 with 1 blank recycling 1 of 1 question 13 with 1 blank to reduce 1 of 1 question 14 with 1 blank science 1 of 1 question 15 with 1 blank traffic 1 of 1
The frequency and severity of heatwaves, for instance, would increase. According to the U.N. climate science panel, if global warming increases by 1.5°C or more, extreme heat events that occur once every ten years in a climate unaffected by human activity would occur 4.1 times and 5.6 times, respectively (IPCC).
Meaning of a 1.5 degree increase in global warming?A 1.5°C emission route is one that offers a one-in-two to two-in-three likelihood that warming will either stay below 1.5°C or revert to 1.5°C by roughly 2100 after an overshoot, based on the present understanding of the climate response.The frequency and severity of heatwaves, for instance, would increase. According to the U.N. climate science panel, if global warming increases by 1.5°C or more, extreme heat events that occur once every ten years in a climate unaffected by human activity would occur 4.1 times and 5.6 times, respectively (IPCC).To learn more about global warming refer to:
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a frictionless pulley has the shape of a uniform solid disk of mass 4.00 kg and radius 17.0 cm . a 2.90 kg stone is attached to a very light wire that is wrapped around the rim of the pulley(figure 1), and the stone is released from rest. as it falls down, the wire unwinds without stretching or slipping, causing the pulley to rotate. how far must the stone fall so that the pulley has 4.30 j of kinetic energy?
Since speed is 0 when at rest. Only while moving does an object have kinetic energy.
Find kinetic energy?The power behind motion is called kinetic energy.
KE = (0.5) m v2 is the equation for kinetic energy.
m denotes the object's mass, and v its speed.
An object at rest has no kinetic energy because it is at rest because its speed is zero, whereas an object moving at some speed and mass will have kinetic energy.
since speed is 0 when at rest. Only while moving does an object have kinetic energy.
An object at rest has no kinetic energy because it is at rest because its speed is zero, whereas an object moving at some speed and mass will have kinetic energy.
Since speed is 0 when at rest. Only while moving does an object have kinetic energy.
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Which perspective studies help behavior and cognitive processes vary among cultures
(UPDATED) Please answer the following questions requested bellow ↓
≈≡ EACH QUESTION IS 5 POINTS WHICH IS 30 POINTS IN TOTAL ≡≈
Millikan and Harvey set out to measure, the value of the elementary electric charge, hence for questions 1- B, 2- C, 3- D, 4-A, and 5- D.
What is an Oil drop experiment?If the top metal is negatively charged the positive charge of the droplets will be attracted to it. If droplets have three extra electrons it has three elementary charges.
The experiment involved looking at microscopic electrically charged oil droplets that were sandwiched between two parallel metal surfaces that served as the capacitor's plates.
Therefore, the evaporation of oil from droplets during the experiment is a potential source of excess charge.
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The momentum of an object is determined to be 7.2 X 10^-3
The equivalent unit of the momentum is 7.2 g m/s.
What is the momentum?We have to note that the momentum of the object is determined as the product of the mass and the velocity of the object. The reason why we say that the momentum is a vector is because it has the direction of the velocity of the object.
We know that the unit of the momentum of the object can be said to be the kilogram meter per second given the dimensions of the momentum. we can be able to obtain an equivalent unit when we convert the given value of 7.2 X 10^-3 Kg m/s.
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Missing parts;
The momentum of an object is determined to be 7.2 X 10-3 kg m/s. Express this quantity as provider or use any equivalent unit.
on sunday night, a meteorologist records predicted daily high temperatures, in degrees fahrenheit, for the next seven days. at the end of each day, the meteorologist records the actual daily high temperature, in degrees fahrenheit. at the end of the seven-day period, the meteorologist would like to find the greatest absolute difference between a predicted temperature and a corresponding actual temperature.
temps, in ℉, for the following seven days, if (Math.abs(pred[i] – act[i]) > num); num Equal Math.abs(pred[i] - act[i]); The ordinary everyday temp, measured in ° C., is noted by the meteorologist at the close of each day.
what do weather forecasters do?The science of meteorology is concerned with the physical processes that occur in the Earth's atmosphere. Physicists who observe, investigate, or predict the weather are known as meteorologists.
Who is a meteorologist, exactly?A person with specific education who employs scientific concepts to explain, comprehend, observe, or forecast atmospheric events on earth, as well as how the atmosphere influences the earth & life on the planet, is known as a meteorologist.
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an object with mass 2.4 kg is executing simple harmonic motion, attached to a spring with spring constant 330 n/m . when the object is 0.019 m from its equilibrium position, it is moving with a speed of 0.60 m/s .a) Calculate the amplitude of the motion.b) Calculate the maximum speed attained by the object.
The greatest speed obtained by the item is 0.0675, according to the supplied solution.
How is the maximum speed calculated?We now understand that velocity reaches its maximum when y=0, which means the system is in equilibrium when displacement and acceleration are both zero. In basic harmonic motion, the formula v=A can be used to determine the maximum velocity at a given position.
What is the fastest speed possible?Top speed and greatest velocity are also terms used in sprint competitions. This refers to your maximum sprint pace, which you can only maintain for a brief period of time until mechanical deceleration and tiredness cause you to slow down.
According to the given information:Mass of the object, m = 2.4 Kg
Spring constant, K = 330N/m
Speed = 0.60 m/sec
We know
ω = √(k/m)
= √(330/2.4)
ω = 11.72 rad /sec
For the speed:
V = ω √(A² + x²)
= 11.72√(A² + 0.02)
= 0.0675
According to the given solving the maximum speed attained by the object = 0.0675.
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car weighing 130 kn when fully loaded is pulled slowly up a steep inclined track by a steel cable (see figure). the cable has an effective 2 cross-section car weighing 130 kn when fully loaded is pulled slowly up a steep inclined track by a steel cable (see figure). the cable has an effective 2 cross-section
The cable has an effective 2 cross-section car weighing 130 km when fully loaded is pulled slowly up a steep inclined track by a steel cable.
What is the history of car?The Benz Patent-Motorwagen, created by German inventor Carl Benz, was the first automobile. The 20th century saw the widespread availability of automobiles . The 1908 Model T, an American automobile produced by the Ford Motor Company, was one of the first vehicles that the average person could purchase. In the US, where they quickly displaced horse-drawn carriages, cars became commonplace. The market for vehicles did not pick up until the end of World War II in Europe and other regions of the world. The automobile is seen as a crucial component of the modern economy.
Controls are available for driving, parking, passenger comfort, and a number of lighting in automobiles. Vehicles have steadily become more complicated over the years as more features and controls have been introduced. These include GPS systems, air conditioning, and rearview cameras.
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Isabella uses a voltmeter to measure the voltage of a battery. The
voltage reads 9 V when she measures both sides. Make an
argument about what the reading will be if she measures the same
side of a battery. Use evidence to support your argument.
If Isabella measures the same side of a battery, the voltage reading should remain the same at 9 V.
The basic principle of electricityThis is because voltage is a measure of the potential difference between two points on an electrical circuit, and since Isabella is measuring the same point on the battery, no potential difference exists and the voltage reading should remain the same.This can be supported by Ohm's Law, which states that the voltage of a circuit is equal to the current multiplied by the resistance.Since Isabella is measuring the same point on the battery, the resistance and current are the same, meaning the voltage should remain the same.If Isabella measures the same side of the battery, the voltage will remain the same at 9 V.This is because the voltage of a battery is measured between the two terminals and a single terminal has a voltage of 0 V, so measuring one side will not change the overall voltage.Evidence for this can be found in the behavior of the voltmeter; when measuring the same side of the battery, the voltmeter should not display any change in the voltage reading.To learn more about Ohm's Law refer to:
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consider the circuit shown. the values of the resistors capacitors and battery voltage are provided. initially the capacitors are uncharged
Uncharged capacitor there is a flow of electrons from charged to uncharged until a steady state situation is arrived. I.e. After this no transfer of charge happens i.e. both the capacitors are in equilibrium condition.
What is meant by electrons?
A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound).One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.The nucleus of an atom is made up of electrons, protons, and neutrons together.The negatively charged particles known as electrons revolve around the outside of the nucleus.For scientists, it can be challenging to monitor them because of how quickly they spin.The tiniest particles in an atom, you can put 2000 of them into a proton, they are drawn to the positive charge of the protons.To learn more about electron refer to
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When conducting a hypothesis test concerning the population proportion, the value of the test statistic is calculated as _____
When performing a hypothesis test on the population proportion, the test statistic is calculated as z=p*-p0/√(p0(1-p0))/n.
What is hypothesis?A hypothesis is an explanation proposed for a phenomenon. The scientific method requires that a hypothesis be testable in order for it to be considered a scientific hypothesis. Scientists typically base scientific hypotheses on previous observations that cannot be adequately explained by existing scientific theories. In a scientific context, a hypothesis (plural: hypotheses) is a testable statement about the relationship between two or more variables or a proposed explanation for some observed phenomenon. A simple hypothesis is a statement that reflects the relationship between two variables. One is independent, while the other is dependent. Consider the statement, "Smoking is a leading cause of lung cancer." The independent variable, smoking, influences the dependent variable, lung cancer.
Here,
When conducting a hypothesis test concerning the population proportion, the value of the test statistic is calculated as z=p*-p0/√(p0(1-p0))/n.
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sort these stellar objects by their total power output per unit surface area. not all the objects are on the interactive, so determine the trend first, then sort the objects.
The stellar objects sorted by their total power output per unit surface area,
a brown dwarf with T= 1000 K
a K star with T= 4400 K
the Sun, a G star with T= 5800 K
an F star with T= 7000 K
What is power?Power is defined in physics as the quantity of energy transported or transformed per unit time. The watt is the unit of power in the International System of Units, equivalent to one joule per second. Power is also referred to as activity in ancient writings. A scalar quantity is power. Power may be defined as the pace at which work is completed in a given amount of time. Watt (W) is the SI unit of power, which is joules per second (J/s). Horsepower (hp), which is approximately equivalent to 745.7 watts, is sometimes used to describe the power of motor vehicles and other machinery.
Here,
The star objects are arranged in order of total power output per unit surface area,
a brown dwarf with T= 1000 K
a K star with T= 4400 K
the Sun, a G star with T= 5800 K
an F star with T= 7000 K
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Why is C the correct answer, how do you solve this? Thanks :)
Answer: the 1 and 3 = 4 on the y
and the you take the dotted line on the x from the sixx and you add them together and you get 10ms^-1
Explanation:
highlight three dimensional elements from a two dimensional image. nearby objects reflect more light to our eyes. thus, given two identical objects, the dimmer one seems farther away. true or false
A three dimensional object grow from the two dimensional objects.
A three dimensional object can be defined as the one that is more real and tangible in our present world. A three dimensional object an object that has all the following values like the Height, width and depth.
A three dimensional object consists of man and almost all the things we see every where in our everyday life.
The three dimensional object is very important, and hence they are being employed by different organization like the film industry, because it make it look real and tangible and are used in various other industries.
We can conclude that a three dimensional object grow from two dimensional.
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what is true of the electric field at a displacement from a point charge q. choose from the following choices. assume no other source of electric fields. a. with pointing away from q if q is positive and toward q if q is negative. b. c. note that the unit vector is the vector of magnitude 1 in the direction of and can be written as .
The area of space surrounding an electrically charged particle or object in which the charge body perceives force is known as the electric field.
The charge per unit area that would be moved over a layer of conductor put across an electric field is known as electric displacement, indicated by the symbol D. Electric flux density is another name for it.
An electric field is a physical field that surrounds electrically charged particles and acts as an attractor or repellent to all other charged particles in the vicinity. It can also refer to a system of charged particles' physical field.
A hypothetical charge at a single point in space is known as a point charge. Even though an electron is often referred to as a point charge, its size can be determined by a length scale called the electron radius.
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Three pairs of balls are connected by very light rods as
shown in Figure P7.40. Rank in order, from smallest to larg-
est, the moments of inertia I₁, I2, and I3 about axes through the
centers of the rods.
m
FIGURE P7.40
TI
R
1
m/2
m
2m
2R
3
R/2
2
m
m/2
The moments of inertia are ranked as follows, from smallest to largest is I₁ < I₂ < I₃.
Moment of inertia is a physical quantity that measures an object's resistance to rotational motion. It is defined as the sum of the products of the mass of each particle in a system and the square of its perpendicular distance from the axis of rotation.
The formula for moment of inertia is:
I = Σmr²
where I is the moment of inertia, m is the mass of each particle in the system, r is the perpendicular distance of each particle from the axis of rotation, and the symbol Σ indicates a summation over all particles in the system.
Moment of inertia plays a crucial role in rotational motion, just as mass plays a crucial role in linear motion. It determines how much torque is required to produce a certain amount of rotational acceleration, and how quickly an object will respond to an applied torque.
The moment of inertia of an object depends on its shape and the distribution of mass within that shape. Objects with more mass distributed farther from the axis of rotation will have a higher moment of inertia and will be more resistant to rotational motion.
Moment of inertia is an important concept in many areas of physics and engineering, such as the design of rotating machinery, the motion of planets and other celestial bodies, and the behavior of molecules in quantum mechanics.
Here in the question,
To rank the moments of inertia I₁, I₂, and I₃ about axes through the centers of the rods, we need to use the parallel axis theorem, which states that the moment of inertia about an axis parallel to an axis passing through the center of mass of the object is equal to the moment of inertia about the center of mass plus the product of the mass and the square of the distance between the two axes.
Let's denote the distances between the centers of mass and the rods as r₁, r₂, and r₃, respectively.
Then we have:
I₁ = I₁_cm + m(r₁ + R/2)^2
I₂ = I₂_cm + m(r₂ + 2R)^2
I₃ = I₃_cm + m(r₃ + R/2)^2
To rank the moments of inertia, we need to compare the values of (r + R/2)^2, (r + 2R)^2, and (r + R/2)^2 + R²/4 for each of the pairs of balls. We can see that the last term is the same for all pairs of balls, so we only need to compare the first two terms for each pair.
For pair 1, we have:
(r₁ + R/2)^2 < (r₂ + 2R)^2
since r₁ < r₂.
For pair 2, we have:
(r₂ + 2R)^2 < (r₃ + R/2)^2 + R²/4
since r₂ < r₃.
Therefore, the moments of inertia are ranked from smallest to greatest is I₁ < I₂ < I₃.
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