Author Question: Motor 1 does 30 J of work in 10 s, motor 2 does 2 J of work in 5 s, motor 3 does 7 J of work in 2 s, ... (Read 94 times)

crazycityslicker · **on:** Jul 28, 2018

Motor 1 does 30 J of work in 10 s, motor 2 does 2 J of work in 5 s, motor 3 does 7 J of work in 2 s, and motor 4 does 7 J of work in 3 s. List the motors in order of highest power produced to lowest power produced.
a. 2, 4, 1, 3
c. 1, 3, 4, 2
b. 3, 4, 1, 2
d. 3, 1, 4, 2

Question 2

Two electrons are separated by one cm. What is the ratio of the electric force to the gravitational force between them? (me = 9.11 10-31 kg, ke = 8.99 109 Nm2/C2, G = 6.67 10-11 Nm2/kg2, and e = 1.6 10-19 C)
a. 1.3 1020
c. 2.3 102
b. 4.2 1042
d. 3.1 1022