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a girl uses a jump rope made of flexible wire. she holds the ends of the rope in extended hands, so the rope had approximately the shape of a semicircle of radius 0.850 m and she whirls the rope at a rate of 1.00 revolution per second at a place where the magnetic field of the earth is nearly vertical, of magnitude 5.00 x 10^-5 T. The motion of the wire rope generates an alternating emf between the ends of the rope. What is the amplitude of oscillation of this alternating emf?
Two narrow slits 62um apart are illuminated with light of wavelength 480nm . What is an angle of the bright fringe in degrees.
a 1.0 point charge is 15m from a second point charge, what is the magnitude of the second charge?
An iron wire has a cross-sectional area of 1.14 10-5 m2. Carry out steps (a) through (e) to compute the drift speed of the conduction electrons in the wire, If the wire carries a current of 9.0 A, calculate the drift speed of conduction electrons
At the moment of release, a baseball player has a horizontal velocity component of 39 meters per second, At what angle was the ball released
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
In the hydraulic system shown in the figure , the piston on the left has a diameter of 4.5 and a mass of 1.8, what is the height difference between the two pistons
An object is placed 13 cm in front of a converging lens with a focal length of 1 cm. Carefully draw a ray diagram on a piece of graph paper , Is the image magnified or reduced
The height of the haystack is 1 meter. You press down on topof the stack and discover that to compress the stack by 25cm, What is the haystack's spring constant
A beetle 4.80mm is examined with magnifier of focal length 10.3 cm. If the observer's eye is relaxed while using the magnifier, what is the apparent length of the beetle
two students stand poised to leap off a high dive structure into teh swimming pool below. Student B is twice as massive as student A. Find the magnitude of velocity of canoe relative to river.
In a three pulley system a man who weighs 875.0N is standing upright holding on one end of the rope while the other end is tied to his feet. Estimate the normal force from the ground
An aluminum-alloy rod has a length of 10.008 cm at 16.400°C and a length of 10.020 cm at the boiling point of water. (a) What is the length of the rod at the freezing point of water
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