Two long parallel wires are separated by 2.0 cm. The current in one of the wires is three times the other current. If the magnitude of the force on a 2.0-m length of one of the wires is equal to 60 mN, what is the greater of the two currents?
a. 2.0 A
b. 1.0 A
c. 3.0 A
d. 9.0 A
e. 1.5 A
C
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If a binary system has a period of 4 years and a separation of 5 AU, then the total mass is 7.8 solar masses
Indicate whether the statement is true or false
A 10 kg solid cylinder (I = 1/2 
) with a radius of 30.0 cm is rotating about a vertical axis through its center. If the angular momentum is increasing at the rate of 25 kg 
then what is the torque?
A. 70 N•m B. 45 N•m C. 37 N•m D. 25 N•m E. 12 N•m
A driver, traveling at 22 m/s, slows down her 2000 kg truck to stop for a red light. What work is done on the truck by the friction force exerted by the road on the truck?
A) -2.2 × 104 J B) -4.4 × 104 J C) -4.8 × 105 J D) -9.7 × 105 J
The first self-sustaining nuclear fission reaction was achieved in Chicago in 1942 under the direction of a scientist named ______________
Fill in the blank(s) with correct word