Question

3. If a train of freight cars, each 10
m long, rolls by you at the rate of
three cars each second, the
frequency is
1) 5 Hz
2) 4 Hz
3) 3 Hz
4) 2 Hz
4. What is the speed of the train in above case?​

Answer 1

solution;-

• A frequency of one cycle per second is 1 hertz, two cycles per second is 2 hertz, and ... If a train of freight cars, each 10 m long, rolls by you at the rate of 2 cars
• If two vibrations occur in one second, the frequency is two vibrations or ... one cycle per second is 1 hertz, two cycles per second is 2 hertz, and ... Or if the vibration period is 3 Hz, then the period is 1/3 ... Sound waves, for example, move at speeds of about ... If a train of freight cars, each 10 m long, rolls by you at the rate.

Explanation: