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Questions in physics

[Answered] 1. Sometimes in very cold places, water pipes burst. Explain why this happens.

[Answered] **How does a television signal differ from a standard radio wave?**

[Answered] What will be the effect on the loudness of sound if the amplitude is doubled or halved?

[Answered] A railway train 50 m long passes over a bridge 250 m long at the rate of 12 km/h. How long will it take to completely pass over the bridge?

[Answered] A man travels 10 km to the east and then 20 km to the north. Find the distance moved and the displacement.

[Answered] A charge of 90 C passes through a wire in 1 hour 15 minutes. What is the current in the wire?

[Answered] What is the difference between a kilowatt and a kilowatt-hour?

[Answered] If a wave has a frequency of 8 Hz, what is its period?

[Answered] How far does light travel in 1 millisecond, that is, in one thousandth of a second?

[Answered] An automobile engine exerts a force of 595 N to propel the car at 90.0 km/h on a level road. What is the power output of the engine at that time?