What do the sounds of a basketball bouncing and a dog barking have in common?

A. Both require a medium to travel through.
B. Both require a human eardrum in order to be
heard.
C. Both have the same amplitude.
D. Both have the same frequency.

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

Ineed ! using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.