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A copper rod 81cm long is used to poke a fire. The hot end of the rod is maintained at 105 degrees celcius and the cool end has a constant temperature of 21 degrees celcius. What is the temperature of the rod 25cm from the cool end?
A certain heat engine does 12.0 kJ of work and dissipates 8.00 kJ of waste heat in a cyclical process. What was the heat input to this engine
A series circuit is connected to a 220-V, 60-Hzpower supply. The circuit has the following components: a 16? resistor, Compute the rms voltage across the resistor
What is walking speed if the speed drops. after an exciting but exhausting lecture, a physic lecture stretch out for a nap on a bed of nails, suffering no injury and only moderate discomfort. how is this possible.
If the atmosphere warmed up by 5 degrees Celsius, would the atmospheric pressure at 5km above sea level increase or decrease, and by approximately how much
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300K, What is the final temperature of the gas
A firefighter a distance d from a burning building directs a stream of water from a fire hose at angle ?i above the horizontal, at what height h does the water strike the building
A 4.68 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. What is the mass of the second sphere
A 0.70 kg iron horseshoe is taken from a forge at 900°C and dropped into 3.00 kg of water at 13.0°C. find the total entropy change of the horseshoe-plus-water system
A 200 gram ball is attached to a string that is 1 m long and swung in a vertical circle. What is the minimum veocity of the ball so that the string will not slack at the top
Three capacitors having capacitances of 8.3\mu F , 8.8\mu F , and 4.0\mu F are connected in series across a 38-{\rm V} potential difference. What is the total energy stored in all three capacitors
The pressure of sulfur dioxide (SO2) is 2.54 x 104 Pa. Find the translational rms speed of the sulfur dioxide molecules
Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15 m with a charge of 92 e distributed uniformly throughout its volume. What is the electric force exerted on an electron
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