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A pitcher pitches a baseball of mass 0.20 kilogram. The ball arrives at home plate with a speed of 40 m/s and is batted directly back to the pitcher with a return speed of 50 m/s.
A) Find the magnitude of the change in momentum of the baseball?
B) If the bat remains in contact with the ball for 0.12 second, compute the average force of the bat on the ball?
A uniform rod of mass 3.05×10?2kg and length 0.350m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the rod after the rings leave it
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a straight horizontal conducting rod of length 0.45 m and mass 60 g is suspended by two vertical wires at its ends. a
What is the acceleration of two falling sky divers.
With what speed in miles/hr (1 m/s = 2.23 mi/hr) must an object be thrown to reach a height of 91.5 m (equivalent to one football field)? Assume negligible air resistance.
A 5.70-kg ball is dropped from a height of 12.0m above one end of a uniform bar that pivots at its center. The bar has mass 6.00kg and is 4.80m in length. At the other end of the bar sits another 5.10-kg ball, unattached to the bar. The dropped ball ..
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An idealized voltmeter is connected across the terminals of a 12.5-{\rm V} battery, and a 73.5-\Omega appliance is also connected across its terminals. What is the internal resistance of the battery?
a hockey puck slides off the edge of a table with an initial velocity of 22.0 ms and experiences no air resistance. the
Consider 1 cubic meter of dry at the surface with a temperature of 300 K and a pressure of 1000 mb. Problem 19) How much energy must be added to this cubic meter of air in order to double its volume? What is the final temperature?
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north
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