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A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 3.90 and whose dielectric strength is 2.80 108 V/m. The desired capacitance is 0.300 µF, and the capacitor must withstand a maximum potential difference of 4.00 kV. Find the minimum area of the capacitor plates.
A 2.50 g lead bullet traveling at 560 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0°C. Find the heat required to melt the bullet
A 6.4 kg freight car is coasting at a speed of 46.3 m/s along a straight track when it strikes a 15.8 kg stationary freight car and couples to it. What will be their combined speed after impact
A cylindrical flask is fitted with an airtight piston that is free to slide up and down, A mass rests on top of the piston. determine the final temperature of the gas
question when two moles of hydrogen and one mole of oxygen react to form two moles of water the energy released is 485
A traffic light, weighing 668N is hung from the center of acable of negligible weight that is stretched horizontally btween two poles that are 18.3m apart. What is the tension in the cable
calculate the electric field on the axis of the disk at 5 cm, 10 cm, 50 cm, 200 cm from the center of the disk
The British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold. (a) Find the mass of gold in the sovereign in kilograms using the fact that the number of karats = 24 (mass of gold)/(total mass)...
A cube of ice whose edges measure 21.0mm is floating in a glass of ice-cold water with one of its facesparallel to the water's surface. How far below the water surface is the bottom face of the block?
Suppose optical radiation (? = 5.60 10-7 m) is used to determine the position of an electron to within the wavelength of the light. What will be the resulting uncertainty in the electron's velocity?
A bucket of mass 5 kg is suspended over a well shaft by a winch and a rope. What is the angular velocity of the winch just before the bucket hits the water
A hockey player strikes a 166 g puck, accelerating it from rest to 48 m/s. If the hockey stick is in contact with the puck for 2.5 ms, what is the average force applied by the stick
A 4.00 kg model rocket is launched, expelling 46 g of burned fuel from its exhaust at a speed of 590m/s. What is the velocity of rocket after the fuel has burned? Hint: overlook the external forces of gravity and air resistance.
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