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A cylindrical fishing reel has a moment of inertia of I = 6.0 10-4 kg·m2 and a radius of 4.0 cm. A friction clutch in the reel exerts a restraining torque of 1.3 N·m if a fish pulls on the line. The fisherman gets a bite, and the reel begins to spin with an angular acceleration of 70 rad/s2.
(a) What is the force of the fish on the line?
N
(b) How much line unwinds in 0.50 s?
cm
A toroid of mean radius 28 cm and circular cross section of radius 2.3 cm is wound with a superconducting wire of length 1000 m that carries a current of 430 A. What is the number of turns on the coil
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A (20.1+/- 0.2)ohm resistor is connected in parallel with a (39.9+/- 0.4)ohm resistor. The resistors are connected to a (2.90+/-0.03)V battery, Calculate the total current in the circuit
A fire helicopter carries a 520-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, the cable makes an angle of 36.0° with respect to the vertical. Determine the force exerted by air resistan..
what speed does boxcar have after 10 seconds.What is the object's displacement Dx.
A medical x-ray beam has wavelength 1.34nm . (a) What's the energy of one photon in this beam? (b) How many photons are in a typical chest x-ray dose that delivers 0.021J of energy?
A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course.
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, compute the magnitude of the force that you exert on the handle
Two hockey players strike a puck of mass 0.169 kg with their sticks simultaneously, exerting forces of 1.25 103 N, directed west, and 9.80 102 N, Find the instantaneous acceleration of the puck
In an LC circuit with an inductance of 40 mH and capacitance of 1.2 mF, What is the maximum energy stored by the inductor
A small loop of area A=7.4 mm^2 is inside a long solenoid that has n=747 turns/cm, find the amplitude of the emf induced in the loop
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