Which of the following is not a valid equation for describing the behavior of gases?

A. (P1/V1) = (P2/V2)

B. PV = nRT

C. P1V1 = P2V2

D. (V1/T1) = (V2/T2)

A pulley system can a. change the direction of a force. b. multiply the force. c. increase the amount of work done. d. both a and b e. both b and c

Speed is the rate at which what happens?

A helicopter flying west begins experiencing an acceleration of 3m/s2 east. Will the magnitude of its velocity increase or decrease?

Bob is pushing a box across the floor at a constant speed of 1.4 m/s, applying a horizontal force whose magnitude is 65 N. Alice is pushing an identical box across the floor at a constant speed of 2.8 m/s, applying a horizontal force.

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

What an object is made up of and the color of light that strikes it determine the A) apparent color of object B) transparency of the object C) opacity of the object D) translucence of the object

This chart shows characteristics of three different types of waves.

Which of the following statements about Boyle's law are correct? The temperature and pressure must remain constant for the law to apply. The temperature and the number of molecules must remain constant for the law to apply.

Exposure to high energy electromagnetic radiation such as waves can cause cancer sterility and death

What kind of error would result if you read the liquid volume where the liquid touches the wall of the cylinder rather than at the meniscus