How do very long radio waves reach stations beyond the curvature of the earth?
a. they pass through the middle of the earth
c. they are relayed by multiple stations
b. they cannot reach stations around the curvature of the earth
d. they bounce off a charged layer of the atmosphere

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Matt is driving down 7th street. he drives 150 meters in 18 sec. assuming he doesn’t slow down or speed up, what is his speed?

How do the kidneys affect homeostasis