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According to social exchange theory, altruistic behaviors benefit the individual who performs them.
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Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
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By what primary heat transfer mechanism does the sun warm the earth?
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An oscillator makes 360 vibrations in 3 minutes.
a. how many vibrations does it make in one mi...
a. how many vibrations does it make in one mi...
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