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Chapter 1: Q42E (page 462)
A thin metal disk with mass and radiusis attached at its centre to a long fibre. The disk, when twisted and released, oscillates with a period of. Find the torsion constant of the fibre.
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In an experiment, a shearwater (a seabird) was taken from its nest, flown 5150 km away, and released. The bird found its way back to its nest 13.5 days after release. If we place the origin at the nest and extend the +x-axis to the release point, what was the bird鈥檚 average velocity in (a) for the return flight and (b) for the whole episode, from leaving the nest to returning?
In March 2006, two small satellites were discovered orbiting Pluto, one at a distance of 48,000 km and the other at 64,000 km. Pluto already was known to have a large satellite Charon, orbiting at 19,600 km with an orbital period of 6.39 days. Assuming that the satellites do not affect each other, find the orbital periods of the two small satellites withoutusing the mass of Pluto.
Rhea, one of Saturn鈥檚 moons, has a radius of 764 km and an acceleration due to gravity of 0.265 m/s2at its surface. Calculate its mass and average density.
Is a pound of butter on the Earth the same amount as a pound of butter on Mars? What about a kilogram of butter? Explain.
A cylindrical bucket, open at the top, is 25.0 cm high and 10.0 cm in diameter. A circular hole with a cross-sectional area 1.50 cm2 is cut in the center of the bottom of the bucket. Water flows into the bucket from a tube above it at the rate of 2.40 x 10-4m3/s. How high will the water in the bucket rise?
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