Which of the following describes volume
a. the number of particles or amount of matter
b. the amount of space that matter ocupies
c. how fast the particles are moving
d. amount of massin a certain place

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

What is the coefficient of kinetic friction μk between the block and the tabletop?