A small ball is attached to one end of a spring that has an unstrained length of 0.206 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 2.91 m/s. The spring remains nearly parallel to the ground during the motion and is observed to stretch by 0.0107 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless

Although light from the sun appears white, it is actually made up of a lot of different colors. this portion of the electromagnetic spectrum, we call white light is referred to as within the electromagnetic spectrum.

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical