How much work must be done on a particle with a mass of mm to accelerate it from rest to a speed of 0.084 cc ? (Express the answer in terms of mc2mc2.)

What are the north and south poles of a solenoid change with?

Smallest intensity of a stimulus that you can detect 50 percent of the time is

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.