The velocity of sound in air is 332 m/s. If the unit of length is km and the unit of time is hour, what is the value of velocity?

Using the following information to determine the young's modulus for the unknown material, the radius of the material is 4 cm. while gravitational acceleration g=10m/s? initial length (cm) 25 final length (cm) 25.7 mass (gm) 200

10. A car moving at 18 m/s accelerates at - 2.5 m/s² as it approaches a stop sign. a. How long does it take the car to come to a complete stop? b. What distance does the car travel as it is breaking?

3 kg of saturated liquid water, contained in a rigid container at p = 1.5 bar, is heated by a 80 W heater.

How does the north pole of a magnet respond to the poles of other magnets? A. It attracts both north and south poles. B. It repels both north and south poles. C. It attracts the north pole and repels the south pole. D.

During an ice hockey game, George had two shots on goal: one shot from 5m away at 10m/s and one shot from 10m away at 40m/s. Which shot did the goalie have a better chance of blocking?

A certain rain cloud at an altitude of 1.80 km contains 3.20 107 kg of water vapor. How long would it take for a 2.90-kW pump to raise the amount of water from Earth's surface to the cloud's position?

The law of conservation of energy states that A) energy may be created, destroyed or transformed. B) energy may be created, but only in certain types of nuclear reactions. C) energy may neither be created nor destroyed; it may only be transformed.

Pushing a rock from a hill top is called

What is a pulsar? a. the remains of a low-mass star after it explodes b. a spinning neutron star emitted radio waves c. another name for a protostar d. the stage before a dying star becomes a supernova

Can we divide two vectors?