Light travels at 3.0 * 108 m/s in a vacuum and slows to 2.0 * 108 m/s in glass. What is the index of refraction of glass?

What is the source of all sound

A wave is a disturbance that transfers energy through medium from one place to another. Do the particles in the medium travel with the wave?

What happens to the acceleration of an object if the net force on it increases

A spring has a spring constant of 113 N/m. How much elastic potential energy is stored in the spring when it is compressed by 0.03 m? A:0.23 j B:0.022 j C:0.051 j D: 1.70 j

When a certain isotope, such as U-238, is hit by a neutron, it will always split into the same smaller nuclei. true or false?

When you bring the negatively charged balloon near a rod, how do the electrons move? The electrons move away from the balloon. The electrons do not move. The electrons move toward the balloon.

Mazie stands on her kitchen floor. The coefficient of kinetic friction between her socks and the floor is 0.62, and the coefficient of static friction is 0.75. She has a mass of 42 kg. a.

The kinetic energy of an object is quadrupled. its momentum will change by what factor?

Combining which of the following substances with germanium will cause the germanium to emit free electrons? A. Bismuth B. Gallium C. Aluminum D. Indium

A 50.0-g Super Ball traveling at 25.0 m/s bounces off a brick wall and rebounds at 22.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.