Question

12/17/2017 Name Section FINAL AU 17 PHYSICS 4A 10. Wheels in the shape of a thin walled hoop and in the shape of a uniform solid cylinder are released from rest at the top of an inclined plane at the same time. Which wheel arrives at the bottom first? (a) the thin walled hoop. (bý the uniform solid cylinder 11. Is a pound of butter on the Earth the same amount as a pound of butter on the Moon? (a) Yes (b) No 12. A rocket is fired from the Earth's surface in a direction perpendicular to it and with the escape speed for the Earth other celestial bodies, when the rocket is very far way from the Earth (i.e., close to infinity), its speed is (a) zero (b) greater than zero. Neglecting 13. A glider is attached to horizontal spring and oscillates on a horizontal, frictionless air track with amplitude A. At what point is the glider's acceleration the greatest in magnitude? (a) When the spring displacement x is zero. (b) When the spring displacement magnitude x is equal to A (c) none of the above ), 14. A certain wave is described by y(x, t) = (5.00 mm)cos(2π- where x is in meters and t is in seconds, What is the amplitude? (a) 2.50 mm (b) 5.00 mm (c) 10.0 mm (d) nota 15. In the previous problem, what is the wavelength? (a) 1.00 m (b) 2.00 m (c) 4.0 m (d) nota 16. In the previous problem, what is the frequency? (a) 1.00 Hz (b) 0.50 Hz (c) 2.00 Hz (d) nota

Answer 1

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