Atomic mass can change through the process of fusion. Another way is, it can also change in nuclear fusion.
Answer:
F = 5702.56 N
Explanation:
Given that,
Mass of a small car, m = 800 kg
Initial speed of the car, u = 27.8 m/s
Final speed, v = 0
Time, t = 3.9 s
We need to find the force did it take for the car to stop.
The force acting on an object is given by :

So, the magnitude of force acting on the car to stop is 5702.56 N.
Answer:
-30 m
Explanation:
50-20 but the direction is going west so it’s negative
Answer:B)439.21 Hz
Explanation:
Given
velocity of train 
frequency of train 
speed of sound 
frequency from Doppler effect can be calculated by




