How does the speed of a sound wave change as the medium through which it traveks changes?

A rocket initially at rest accelerates at a rate of 99.0 meters/second2. Calculate the distance covered by the rocket if it attains a final velocity of 445 meters/second after 4.50 seconds. a) 2.50 * 102 meters b) 1.00 * 103 meters c) 5.

How much force is required to move a sled 5 meters if a person uses 60 J of work?

If the pressure of a gas is increased then the volume will decrease because the particles of the gas will be for us closer together what is the independent variable

If the period of a simple pendulum is T and you increase its length so that it is 4 times longer, what will the new period be? a. T/4b. It is unchanged. C. T/2 d. 2T e. 4T

What are the two general types of energy that can be used to classify many forms of energy?

The periodic law states that elements that have similar properties appear ... a. to the left of each other b. to the right of each other c. at every 10th element d. at regular intervals

An expert archer tried to shoot an arrow into a target lying at the bottom of a shallow pool. Even though the water did not change the direction of the arrow, the archer missed the mark by several inches.

Which of the following best describes a mechanical wave? A. A periodic disturbance of a medium. B. A movement of matter. c. A transfer of energy. D. When energy is converted from one form to another.

What is a 2d game. Give a refrence.

Two exactly similar wire of steel and copper are stretched by equal force. if the total elongation is 10cm. find how much each wire is elongated given young's modules for steel = 2*10^10 N/M^2 and Young's modules for copper 2*10^10N/M^2.