A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous medium. What is the change in mechanical energy caused by the force the viscous medium exerts on the sphere during this descent?
a. ?6.1 J
b. ?4.6 J
c. ?5.3 J
d. ?6.8 J
e. ?2.7 J
c
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State Kepler's First Law of Orbital Motion
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As the temperature of a wire increases, its ________ also increases.
Fill in the blank(s) with the appropriate word(s).
If all potatoes are selling at the same price per kilogram, a housewife who plans to peel the potatoes would get more potato for her money if she bought
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