What is the antimatter equivalent of the electron?

a. neutrino

b. positron

c. lepton

d. fermion

Why are the plates in a capacitor parallel to each other?

Which of the following has the most biomass?

When you drop a 0.43 kg apple, Earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earth's surface. According to Newton's third law, the apple must exert an equal but opposite force on Earth. If the mass of the earth 5.

A book rests on a desk. Its cover measures an area of 15cm and 20cm. it exerts a pressure of 400pa. Determine the mass of the. (Use g=10n/kg)

Consider a pair of forces, one having a magnitude of 20 n and the other a magnitude of 12 n. what is the strongest possible net force for these two forces? what is the weakest possible net force?

Who discovered black hole radiation?

You catch, tag, and release 50 fish back into a pond. Then, you catch 25 more fish, 5 of which are tagged. What is the best estimate of the number of fish in the pond? A. 100 fish B. 250 fish C. 400 fish D. 625 fish

Which statement correctly describes the differences between positive and negative acceleration? Positive acceleration describes a change in speed; negative acceleration describes no change in speed.

The light-producing element in a fluorescent bulb is the

an object travels in circular motion with a speed of 11.40 m/s. What is the centripetal acceleration if the radius of the circle is 5.52 m?