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Suppose Sharon rides her bike at a speed of 10 m/s. As she rides uphill, her speed decreases to 5 m/s. Is her acceleration positive or negative?
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How does convection affect our atmosphere? our layers of earth? our oceans?
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For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up
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The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
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Suppose Sharon rides her bike at a speed of 10 m/s. As she rides uphill, her speed decreases to 5 m/...
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