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Since 1983, the U.S. Mint has coined pennies that are made out ofzinc with a copper cladding. The mass of this type of penny is 2.50g. Model the penny as a uniform cylinder of height 1.23 mm andradius 9.50 mm. Assume the copper cladding is uniformly thick onall surfaces. If the density of zinc is 7140 kg/m3 andthat of copper is 8930 kg/m3 what is the thickness ofthe copper cladding? (Assume that the thickness is much less thanthe radius and the height of the penny.)
How would you estimate the maximum height you could throw a ball vertically upward? How would you estimate the maximum speed you could give it
Two long, parallel conductors carry currents I1 = 3.00 A and I2 = 2.50 A, both directed into the plane of the computer screen. Determine the magnitude and direction of the resultant magnetic field at P.
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An air-filled parallel-plate capacitor has plates of area 2.50 cm2 separated by 2.00 mm. The capacitor is connected to a 3.0-V battery, What is the magnitude of the uniform electric field between the plates
A Carnot engine absorbs 940 J of heat each cycle and provides 380 J of work. How much heat is rejected each cycle
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