What is the basis for how the four types of protozoa are grouped

a. locomotion

b. size

c. food

d. habitat

What is work? how much work is done to move an object 0 meters?

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?