Answer:
The length of the train in the frame of the lecture room is 40.59 m.
Explanation:
Given that,
Speed = 0.894 c
Original length = 90.6 m
We need to calculate the length of the train in the frame of the lecture room
Using formula of length contraction

Where,
=original length
v = speed of train
Put the value into the formula



Hence, The length of the train in the frame of the lecture room is 40.59 m.
A wave sound is a longitudinal <span>wave.
HOPE THIS HELPS :)
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Velocity means DIRECTION and speed.
and if it's going down that's a different direction from up obviously.
Potential energy , hope this helps :)
Answer:
F/K=4.5/9=0.5
Explanation:
that's the way to find it