Your friend has a rubber band stretched between two fingers. When you pluck the rubber band, it vibrates and makes sound. What would you have to do to make the sound a higher pitch? To make a higher pitch, stretch the rubber band more.

To make a higher pitch, pluck the rubber band less hard.

To make a higher pitch, stretch the rubber band less.

To make a higher pitch, pluck the rubber band harder.

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

What happens to the light rays when they hit the specimen?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage