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Make a system (refrigerator, heat pump, and heat engine) operating between a hot reservoir at 600 K and a cold reservoir at 289.46 K. Each one should produce 1000 J of useful work.
Make a scenario where one of the three systems is "not possible due to first law of thermodynamics", "not possible due to second law of thermodynamics", "possible", and "ideal."
Two identically constructed clocks are synchronized. One is put into orbit around Earth, and the other remains on Earth. Which clock runs more slowly? When the moving clock return to Earth, will the two clocks still be synchronized? Talk about from t..
Your car's windshield wipers utilizes a variable timer to swish the wipers every 1 s to 15 s, depending on the setting. This timer circuitry contains a capacitor and resistor. If the capacitance of the capacitor is ~1 μF, what range of resistance ..
If the squid suddenly expels that water at a speed of 9 m/s in some direction, with what speed does the squid recoil in the opposite direction?
A concrete highway is built of slabs 8.0 m long (20°C). How wide should expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of temperature is -35°C to +45°C.
A cowboy, 6.8 feet tall with his hat, views his full image in a plane mirror. What is the height of the image? What is the minimum length of the mirror?
Explain clearly what sound intensity measures using scientific terminology. Is a 60dB sound twice as loud as a 30 dB sound? If not, what would the difference be
Freight trains can produce only relatively small acceleration and decelerations. How far will it travel in each case
In the circuit shown in the figure, the 6.0 ohm resistor is consuming energy at a rate of 23.0 J/s, Find the current through the ammeter in amps
a particle moves so that its position in meters as a function of time in seconds is r i 2t2j 4t k . use the following
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 1.61 ms. Find the magnitude of the average net force that acts on him during this time
a parallel-plate air capacitor has a capacitance of 500 pf and a charge of magnitude 0.250uc on each plate. the plates
A 70.0 kg person is now given a ride on the bicycle (total mass 140.0 kg). How did the addition of the new rider change the kinetic energy at the same speed?
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