Which of the following statements is true?
a. minerals can be solids or liquids
b. minerals can be elements or compounds
c. graphite and gold are examples of gemstones
d. triclinic crystals have more right angles than isometric crystals

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?