(a)
The length and height of the spacecraft when it is at rest.
(a)
Answer to Problem 13P
The rest length is
The height is
Explanation of Solution
Given info:
Length is
Speed is
Formula used:
Where,
Calculation:
Substitute the given values in the formula
It is known that distances perpendicular to the motion do not change.
So, the rest height will be
(b)
The dilated time in the spacecraft.
(b)
Answer to Problem 13P
Explanation of Solution
Given info:
Time is
Speed is
Formula used:
Where,
Calculation:
Substitute the given values in the formula
(c)
The relative speed.
(c)
Answer to Problem 13P
Explanation of Solution
Introduction:
Relativistic effects are significant only at high speeds, close to
Relativistic effects are relative. Means that speed relative (a person) to friend will be the same as friend's speed relative to that person. According to the question, to friend, a person moved at the same relative speed that is
(d)
The elapsed time.
(d)
Answer to Problem 13P
Explanation of Solution
Introduction: Relativistic effects are relative. Means that speed relative to friend will be the same as friend's speed relative.
According to the question, as anyone saw her watch slow down, she will see the watch slow down by the same amount. So, she would measure the same time dilation:
Chapter 26 Solutions
Physics: Principles with Applications
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