A Ferris wheel has diameter of 10 m and makes one revolution in 8.0 seconds. A person weighing 670 N is sitting on one of the benches attached at the rim of the wheel
What is the apparent weight (that is, the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion?
460 N
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Einstein's theory of gravitation
A) agrees with established results of Newton's theory. B) has been supported by repeated experiments. C) incorporates Newton's theory as a special case. D) is superior to Newton's where spacetime is more curved. E) all of the above
Which of the following is true of the origin of life on Earth?
A) Evidence suggests that the earliest living things contained hard bones and shells. B) The oldest living fossils indicate that life began on land. C) Evidence suggests that the earliest living things were multicellular and gigantic. D) The oldest fossils indicate that life began in the sea.
Simple harmonic motion
A. occurs when there are no forces on the system B. requires a constant force C. requires a force which is not constant, but varies directly with position D. requires a force which is not constant, but varies inversely with position
A 100-W light bulb is connected to a 110-V source. What is the resistance of this bulb?
A) 100 ? B) 8.00 × 10-3 ? C) 6.00 × 10-3 ? D) 121 ? E) 242 ?