Which of the following is a measure of the total energy of a system?
a. volume
b. entropy
c. enthalpy
d. temperature

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

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

What are similarities and differences of reflection, refraction, diffraction and absorption?