1. A ball falls from a height "h" from a tower. Which of the following statements is true? (20 Points)
the potential energy of the ball remains the same as it falls
the velocity of the ball is constant as it falls
the total kinetic and potential energy of the ball is constant (mechanical energy remains the same)
the kinetic energy of the ball remains the same as it falls

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?

How are positive ions different from neutral atoms