Which of the following is an example of sound energy?

A. a tv signal lost bc of a storm

B. the waves from a star seen in the sky

C. a light bulb giving off energy as heat

D. waves moving through air after a crash

A bicyclist travels 300.0 km east in 5 hours. What is the cyclists velocity?

5. In a lab experiment, 45 grams of a metal are heated from 22⁰C to 78⁰C by the addition of 450 J of heat. What is the specific heat of the metal? Show all calculations leading to an answer.

Two sacks contain the same number of identical apples and are separated by a distance r. The two sacks exert a gravitational force on each other that is opposite in direction but with the same magnitude, F.

Consider the following statements. A. Heat flows from an object at higher temperature to an object at lower temperature; B. Heat flows from an object with higher thermal energy to one with lower thermal energy; C.

Explain this statement: "In a static situation, the electric field at the surface of a conductor can have no component parallel to the surface because this would violate the condition that the charges on the surface are at rest.

How much work can be done by a 300 w motor in 60 sec?

What is the protoplanet theory

Moving a charged object against an electrical force causes it to

What is the wavelength of a sound wave with a frequency of 50hz (speed of sound is 342 m/s?

What was Galileo's contribution to the study of motion?