When the man's sound waves are reflected off of the walls, what happens to them?

A:They become twice as loud

B:They "stick" to the wall and get absorbed

C:They become electromagnetic waves

D:They "bounce" off of the wall and begin moving back towards him

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?

How does an increase in temperature generally affect the rate of a reaction?