Homework 2 handout - HW2 Due Thursday February 6 If words are required in an answer then the answer should be expressed in a complete sentence If a

Homework 2 handout - HW2 Due Thursday February 6 If words...

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HW2: Due Thursday February 6 If words are required in an answer, then the answer should be expressed in a complete sentence. If a number is required in an answer, then the number should have the correct number of significant figures, and should include units. If you are asked a multiple choice question, you are required to indicate all correct answers (and there may be more than one). Remember to show all work, and be legible and clear. Your homework should be returned on a separate piece of paper. 1. Given that the Moon has a 29.5-day cycle, about how many full cycles are there in a modern 365.25-day year? A) 12 B) 13 C) 4380 D) 6 2. When kicking a soccer ball, the energy from your foot is converted into energy which is converted into energy as the ball flies straight up into the air which is then lost as energy when the ball collides with the ground. Over the course of the ball’s take-off, flight, and landing, energy is . A) kinetic, potential, thermal, and always conserved B) thermal, kinetic, thermal, and always conserved C) thermal, potential, mass, and always conserved D) kinetic, thermal, potential, and gradually lost 3. Over billions of years, the Moon has gradually been moving farther from the Earth. Thus, the Moon used to be substantially nearer the Earth than it is today.
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