The coefficient of linear expansion of steel is 12 * 10-6 K-1. What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K from winter to Summer?

Suppose a group of bobcats That normally live on hunt in the tops of the mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley

What happens to light when it strikes the inside surface of a smooth, curved mirror? It bounces in random directions. It bounces back toward a single spot. It passes through the mirror and moves in random directions.

Which body exerts the force that propels the sprinter, the blocks or the sprinter?

Find the force of gravity between two physics students that have masses of 74.0 kg and 82.5 if they are sitting 0.95 m apart

An object with a mass of 70 kilograms is supported at a height 8 meters above the ground. what's the potential energy of the object with respect to the ground. A. 2,058 j B. 5,488 j C. 560 j D. 3,430 j

Explain why your weight would be less in the moon than on earth even though your mass would not change. Use the law of universal gravitation in your explanation.

ions are atoms or groups of atoms that have a positive or negative charge. which of the following statements is true of ions?

1. According to the nebular theory, the solar system formed from? A. accretion of protoplanets. B. a large, thin cloud of dust and gas. C. colliding planetesimals. D. all of the above 2.

What is the difference between tangential acceleration and centripetal acceleration?

A ball rolls down a ramp. The ball has a mass of 1 kg and it has 18 joules of kinetic energy. What is the ball's speed?