The acceleration of a ball as it rolls down a ramp is 4 m/s2 . The ball is referred to 2 s after it starts to roll. The distance from the starting point is 16 m
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The full moon rises around sunrise, and sets around sunset
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A piece of aluminum with a mass of 1.0 kg and density of 2700 kg/m3 is suspended from a light cord and then completely immersed in a container of water having density 1000 kg/m3
(a) Determine the volume of the piece of aluminum. (b) Determine the tension in the cord when the aluminum is immersed in the container of water.
Earth is closer to the Sun in winter than in summer. The orbital speed of Earth about the Sun is therefore faster during the
1) summer. 2) winter. 3) is the same for all seasons. Correspondingly, the gravitational force between the Sun and Earth is strongest during 4) summer. 5) winter. 6) is the same for all seasons.
Observations in the X-ray portion of the spectrum are routinely done from the surface of the Earth
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