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A ball of mass 0.500 kg is attached to the end of a cord 1.50 m long. The ball is whirled in a horizontal circle as shown in the figure.
(a) What is the tension in the cord if the ball is whirled with speed of 10 m/s^2?
(b) If the cord can withstand a maximum tension of 50.0 N, what is the maximum speed at which the ball can be whirled before the cord breaks?
(c) What is the Periodic time if the ball is whirled with maximum speed?
a piano tuner hears a beat frequency of 6.2 hz when comparing the pianos a-string against a reference tuning fork
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A 64 Ω resistor is connected in parallel with a 115 Ω resistor. This parallel group is connected in series with a 20 Ω resistor. The total combination is connected across a 15V battery.(a) Find the current in the 115 Ω resistor.(b) Find the power ..
A charge of q= +7.5uC is located in an electricfireld. The x & y components of the electric field are Ex=6.00 X 10^3 N/C and Ey = 8.00 X 10^3 N/Crespecitvely. What is the magnitude of the force on thecharge?
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car a and car b are in a crash. car a has a total mass of 274 kg while car b has a total mass of 272 kg. the
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