is the object's kinetic energy? A. 1.71 x 10^17 J B. 3.42 x 10^17 J C. 5.13 x 10^17 J D. 6.84 x 10^17 J

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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84. An object with a rest mass of 1 kg is moving at a speed of 0.98c relative to an observer. What
is the object's kinetic energy?
A. 1.71 x 10^17 J
B. 3.42 x 10^17 J
C. 5.13 x 10^17 J
D. 6.84 x 10^17 J
85. The Lorentz transformation for space is given by:
A. x' = y(x - vt)
B. x' = y(x + vt)
C. t' = y(t - vx/c^2)
D. t' = y(t + vx/c^2)
86. A 5 kg object is moving at 0.95c relative to an observer. What is the object's total energy?
A. 2.57 x 10^18 J
B. 5.13 x 10^18 J
C. 7.70 x 10^18 J
D. 1.02 x 10^19 J
87. The Lorentz transformation for time can also be expressed as:
A. At' = y(At-vAx/c^2)
B. At' = y(At+vAx/c^2)
C. At' = y(Ax-v^t)
D. At' = y(Ax+vAt)
Transcribed Image Text:84. An object with a rest mass of 1 kg is moving at a speed of 0.98c relative to an observer. What is the object's kinetic energy? A. 1.71 x 10^17 J B. 3.42 x 10^17 J C. 5.13 x 10^17 J D. 6.84 x 10^17 J 85. The Lorentz transformation for space is given by: A. x' = y(x - vt) B. x' = y(x + vt) C. t' = y(t - vx/c^2) D. t' = y(t + vx/c^2) 86. A 5 kg object is moving at 0.95c relative to an observer. What is the object's total energy? A. 2.57 x 10^18 J B. 5.13 x 10^18 J C. 7.70 x 10^18 J D. 1.02 x 10^19 J 87. The Lorentz transformation for time can also be expressed as: A. At' = y(At-vAx/c^2) B. At' = y(At+vAx/c^2) C. At' = y(Ax-v^t) D. At' = y(Ax+vAt)
80. A clock on a spaceship moving at a speed of 0.5c relative to Earth ticks every 2 seconds
according to the passengers. How much time passes between ticks according to an
observer on Earth?
A. 1 s
B. 1.73 s
C. 2 s
D. 3.46 s
81. Two events occur 2 seconds apart according to an observer on Earth. What is the time
difference between the events according to an observer moving at 0.9c relative to Earth?
A. 1.07 s
B. 2 s
C. 4.36 s
D. 6.72 s
82. A spaceship is traveling at a speed of 0.3c relative to an observer on Earth. The spaceship's
clock ticks every 4 seconds according to the passengers. What is the time between ticks
according to the observer on Earth?
A. 3.2 s
B. 4 s
C. 4.8 s
D. 5.6 s
83. If the proper length of an object is 10 meters and an observer measures its length to be 5
meters, what is the speed of the object relative to the observer?
A. 0.87c
B. 0.93c
C. 0.97c
D. 0.99c
Transcribed Image Text:80. A clock on a spaceship moving at a speed of 0.5c relative to Earth ticks every 2 seconds according to the passengers. How much time passes between ticks according to an observer on Earth? A. 1 s B. 1.73 s C. 2 s D. 3.46 s 81. Two events occur 2 seconds apart according to an observer on Earth. What is the time difference between the events according to an observer moving at 0.9c relative to Earth? A. 1.07 s B. 2 s C. 4.36 s D. 6.72 s 82. A spaceship is traveling at a speed of 0.3c relative to an observer on Earth. The spaceship's clock ticks every 4 seconds according to the passengers. What is the time between ticks according to the observer on Earth? A. 3.2 s B. 4 s C. 4.8 s D. 5.6 s 83. If the proper length of an object is 10 meters and an observer measures its length to be 5 meters, what is the speed of the object relative to the observer? A. 0.87c B. 0.93c C. 0.97c D. 0.99c
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