Which of the following transfers heat in the form of a wave?
a. conduction
b. radiation
c. convection
d. nuclear fission

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

In physics the desire of an object to keep doing what it is doing is termed?

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward