How much heat is produced in the 10-? resistor in 5.0 s when ? = 18 V?
A. 72 J
B. 32 J
C. 50 J
D. 18 J
E. 90 J
Answer: D
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A 95-N force exerted at the end of a 0.32-m long torque wrench produces a torque of 15 N ? m. What is the angle (less than 90°) between the wrench handle and the direction of the applied force?
A) 30° B) 24° C) 36° D) 42°
What are sinuous rilles found on the lunar surface?
a. ancient lava flows b. channels cut by flowing lava on the edge of the maria c. large basins once filled with water d. light-colored rock found in the lunar highlands e. fault lines found within the crust
Rita accelerates a 0.40-kg ball from rest to 12 m/s during the 0.15 s in which her foot is in contact with the ball. What average force does she apply to the ball during the kick?
a. 48 N c. 24 N b. 32 N d. 64 N
What is the magnitude of the acceleration of an electron when in an electric field of 
A. 
B. 
C. 
D. 
E. 