Exposure to what kind of energy is sensed by human skin as warmth?
a.) gamma rays
b.) ultraviolet
c.) infrared
d.) x-rays

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?