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A certain 4.8-volt cellular telephone battery has a capacity of 600 mAh. (One mAh equals 3.6 coulombs.) When the battery's charge is too low to run the phone any longer (assume it is zero), the battery must be recharged. (a) How much work is done by the recharger? (b) If electricity costs you 9.0 cents per kWh, how much does one recharge cost you?
A wave of amplitude 0.40 m interferes with a second wave of amplitude 0.3 m traveling in the same direction. (a) What is the largest resultant amplitude that can arise.
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
If 5.20 moles of a monatomic ideal gas at a temperature of 300 K are expanded isothermally from a volume of 1.11 L to a volume of 3.53 L
if your body has a density of 967 kg/m^3, What fration of you will be submerged when in salt water? the density of salt water is 1025 kg/m^3
Physicists first attempted to understand the hydrogen atom by applying the laws of classical physics. Consider an electron of mass m and charge -e in a circular orbit of radius around a proton of charge +e. Use Newtonian physics to show that the tota..
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the retaining wall
calculate the de broglie wavelength of a 4.7 mev ? particle emitted from an atomic nucleus whose diameter is
A 1,000-W motor powers a hoist used to lift cars at a service station. If the original motor is replaced with one rated at 2,000 W, how long would it take to complete this task
A daredevil decides to jump an canyon. Itswalls are equally high and 10 m apart. What minimum speed must he have in order to clear the canyon
An aircraft flying at 100 mph TAS at 5000 ft pressure altitude on a standard day experiences a clogged static port. What is the average velocity around the cockpit
10.0 moles of an ideal gas, at an initial pressure of 1.50 x105 N/m2 and an initial volume of 1.300 m3, Find the work done by the gas
Suppose he hits the ball with a speed of 29 m/s at an angle of 26° above the horizontal. Explain how long was the ball in flight? How far did it travel?
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