How long does it take the bullet to come to rest
A rifle with a barrel length of 55 cm fires a 10 g bullet with a horizontal speed of 450 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 15 cm. How long does it take the bullet to come to rest?
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The rotational inertia of a collapsing spinning star changes to 1/2 its initial value. What is the ratio of the new rotational kinetic energy to the initial rotational kinetic energy (KEnew / KEi)?
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A constitutional amendment has been proposed that would require Congress to balance the Federal budget each year. Is it possible or desirable to balance the Federal budget each year? Also, if it did manage to balance the Federal budget, what s
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