An object of mass 0.93 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a speed of 16.9 m/s. Find the magnitude of the average force acting on the object during the 2.9 ms time interval.

According to Galileo's pendulum theory, which factor determines the time taken to swing through one complete cycle?

A stone is dropped off a cliff in 3.55s how high is the cliff?

The current passing through a room heater has been halved. what will happen to the heat produced by it?

A commuter train blows its 200-Hz horn as it approaches a crossing. The speed of sound is 335 m/s. An observer waiting at the crossing receives a frequency of 207 Hz. What is the speed of the train?

Which of the following is a characteristic of analog data? - It is converted into numbers for transmission - It is converted into numbers for storage - It can travel as a square wave - It is easily lost or hidden by noise

For a stationary observer, when the source of a sound is moving, its pitch appears to change.

Give an example of each simple machine

The product PV, where P and V represent pressure and volume respectively, is a unit for which? A entropy B force C impulse D work

IF it possible for an object to move for 10 seconds at a high speed and end up with an average velocity of zero? true or false

The boy moving down the hill posses what energy?