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A 2.50 kg object is attatched to a spring and placed on a horizontal, smooth surface. A horizontal force of 25N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position(The origin of the x axis). The object is now released from rese with an initial displacement of xi = 0.200m, and is subsequently undergoes simple harmonic oscillations.
(a) Find the force constant of the spring.
(b) Find the Period of the oscillations
(c) Where does the maximum speed occur?
(d) Where does the maximum acceleration occur?
(e) Find the total energy of the oscillating system.
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
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The current in a series circuit is 22.0 A. When an additional 12.0-? resistor is inserted in series, the current drops to 11.0 A. What is the resistance in the original circuit
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A 1.57-? resistor is connected across a 6.90-V battery. The voltage between the terminals of the battery is observed to be only 6.30 V
A 12 kg runaway grocery cart runs into a spring with spring constant 300 N/m and compresses it by 70 cm.What was the speed of the cart just before it hit spring.
A 0.20-kg billiard ball travelling at a speed of 15.00 m/s strikes the side rail of a pool table at an angle of 60 degrees. If the side rail rebounds at the equal speed and angle what is the change in its momentum?
A 0.26- rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, find the initial speed of the rock
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