A 120-kg refrigerator, 2.00 m tall and 85.0 cm wide has its center of mass at its geometrical center. You are attempting to slide it along the floor by pushing horizontally on the side of the refrigerator
The coefficient of static friction between the floor and the refrigerator is 0.300. Depending on where you push, the refrigerator may start to tip over before it starts to slide along the floor. What is the highest distance above the floor that you can push the refrigerator so that it won't tip before it begins to slide? A) 0.710 m
B) 1.00 m
C) 1.21 m
D) 1.42 m
E) 1.63 m
D
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Coulomb's Law: Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces on these beads?
A. The force on A is 10 times the force on B. B. The force on B is 10 times the force on A. C. The force on A is exactly equal to the force on B. D. The force on A is 100 times the force on B. E. The force on B is 100 times the force on A.
A race car traveling at a constant speed of 50 m/s drives around a circular track that is 500 m in diameter. What is the magnitude of the acceleration of the car?
A) 0 m/s2 B) 1.0 m/s2 C) 10 m/s2 D) 0.63 m/s2 E) 2.2 m/s2
Two small cylindrical plastic containers with flat bottoms are placed on a turntable that has a smooth flat surface. Canister A is empty; canister B contains lead shot. Each canister is the same distance r from the center. The coefficient of static friction between the canisters and the turntable is ms. When the speed of the turntable is gradually increased,
a. only the lighter container slides outward off the turntable; the heavier one stays on. b. only the heavier container slides outward off the turntable; the lighter one stays on. c. both containers slide off the turntable at the same turntable speed. d. the lighter container slides inward. e. the heavier container slides inward.
All real images
a. cannot be focused on a screen. b. are erect. c. can be focused on a screen. d. are inverted.