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A tuning fork of unknown frequency makes 5 beats per second with a standard fork of frequency 377 Hz. The beat frequency decreases when a small piece of wax is put on a prong of the first fork. What is the frequency of this fork?
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Question: Pluto moves in a fairly elliptical orbit around the sun. Pluto's speed at its closest approach of 4.43Ã-109km is 6.12 km/s. Part A: What is Pluto's speed at the most distant point in its orbit, where it is 7.30 ...
Question: In a semiclassical model of the hydrogen atom, the electron orbitsthe proton at a distance of 0.053 nm. What is the electric potential of the proton atthe position of the electron? What is the electron's potent ...
Question: A solid sphere and a solid disk of the same mass and radius are rolling wihtout slipping at the same speed. A. What is the ration of their kinetic energies? B. What is the ratio of their angular momenta (measur ...
Question: A series RLC circuit of R = 200 ohm, L = 0.900 H and C = 2.00 uF carries an rms current of 0.250 A with a frequency of 100 Hz. (a) What is the average rate at which electrical energy isconverted to heat in the ...
Question: A ring with radius R and a uniformly distributed total charge Q lies in the xy plane, centered at the origin. Part A: What is the potential V(z) due to the ring on the z axis as a function of z? Express your an ...
Question: Our sun's 5800 K surface temperature gives a peak wavelength in the middle of the visible spectrum. What is the minimum surface temperature for a star whose emission peaks at some wavelength less than 400 nm? t ...
Question: The radius of our Sun is 6.96 x 10 8 m, and its total power output is 3.85 x 10 26 W. (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. K (b) Using the result of part (a), ...
An inflatable life raft is released from an air plane at 500 m altitude, in level flight, with an air speed of 20 m/s in the horizontal direction. How long before the raft strikes the water? How far from the release poin ...
Question: A pendulum is made by tying a 590 g ball to a 47.0 cm-long string. The pendulum is pulled 22.0^\circ to one side, then released. What is the ball's speed at the lowest point of its trajectory? To what angle doe ...
Question: A proton has an initial speed of 3.9 x 105 m/s. (a) What potential difference is required to bring the proton to rest? _________________ kV (b) What potential difference is required to reduce the initial speed ...
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