A mass spring system is in SHM in the horizontal direction. if the mass is 0.25kg, spring constant is 12N/m, and the amplitude is 15cm, a) what is the maximum speed of the mass ? b) what is the speed at a half-amplitude position? ​

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

12. a body is a particular amount of matter. it can be a solid, liquid or gas. it can be described as existing in a. size and shape. b. motion and force c. time and space. d. location and movement.