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A 2.5 kg roast of beef is suspended from a vertical spring in a butcher's scale whose force constant is 200.0 N/m.
a) What is the extension of the spring?
b) How much energy is stored in the spring?
c) If the roast is allowed to bounce, what will its frequency be?
Two capacitors are connected to a battery. The battery voltageis V = 50 V, and the capacitancesare C1 = 2.00 μFand C2 = 4.00 μF. Determine the total energy stored by the two capacitors when they arewired (a) in paralleland (b) in series.
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a small solid disk of mass m and radius r rolls without slipping down a ramp. if it starts from rest at the top of the
In the following circuit, R1=5 Ohm, R2=2* 2.9 Ω, R3=2* 2.9 Ohm, R4=2.9 Ω, R5=5 Ω. If current through R4 Ω resistor is 0.5 A, what is the supply voltage E?
two equally charged particles are held 3.1 x 10-3 m apart and then released from rest. the initial acceleration of the
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