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A 5.0-cm-diameter coil has 20 turns and a resistanceof 0.50 ohms. A magnetic field perpendicular to the coil is B =0.02t + 0.010t^2, where B is in tesla and tis in seconds. Find an expression for the induced current I(t)as a function of time.
A merry-go-round rotates from rest with an angular acceleration of 1.50 rad/s^2. How long does it take to rotate through (a) the first 2.00 rev and (b) the next 2.00 rev?
a dielectric object that has a quasi-permanent polarization when the applied field is zero is called an electret
Resistance and potential difference in an electrical circuit.
a baseball has a mass of 0.12 kg and a major-league pitcher can deliver a ball with a speed of 30 ms. compute the de
A heat engine absorbs 2400 J of heat from a hot reservoir and releases 1400 J of heat to a cold reservoir each second. Find the efficiency of the engine and its mechanical power output
a 3.7 kg box of running shoes slides on a horizontal frictionless table and collides with a 2.4 kg box of ballet slippers initially at rest on the edge of the table, at height h = 0.33 m. what is their kinetic energy just before they strike the flo..
What is the physical meaning of the y-intercept?
Why is it unwise to suddenly apply the brakes of a car on a wet or icy pavement? Everyday examples where areduction in the force of friction would be undesirable?
A parallel plate capacitor has a charge on one plate of q = 1.3E-06 C. Each square plate is d1 = 2.2 cm wide and the plates of the capacitor are separated by d2 = 0.65 mm, What is the voltage between the plates
A real object and its real inverted image are to be 1.5 m apart. There are two possible locations for the lens relative to the position of the object. What is the other possible location
A 42.0-kg boy, riding a 1.50-kg skateboard at a velocity of 5.50m/s across a level sidewalk, jumps forward to leap over a wall.Just after leaving contact with the board, the boy's velocityrelative to the sidewalk is 6.00 m/s, 8.30° above thehorizo..
A 130kg mail bag hangs by a vertical rope 3.3m long. As the bag is moved to this position, how much work is done by the worker
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