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A carnot heat engine operates between reservoirs at temperatures of 864 K and 297 K. In one cycle it absorbs 1,405 J heat. How much work is done by the engine?
A 990 g block oscillates on the end of a spring whose force constant is k = 66 N/m. What is the fractional decrease in amplitude per cycle
A car is behind a truck going 25m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 1.0m/s2. He gauges that he has to cover the 20-m length of the truck, plus 10m clear room at the rear of..
A 62.35-kg person runs and jumps off a 2.46 m cliff at a velocity of 4.75 m/s into water. What is the total work (net work) of the jumper when he hits the surface of the water
plan a picutre showing Mary's displacment due to rowing, her displacemnet due to the river's motion, and her net displacement.
A pion traveling at speed v decays into a muon and neutrino. at what angle does the muon come off
A 40.0 kg wagon is towed up a hill inclined at 18.5o with respect to the horizontal. What is the acceleration of the wagon
When the emf for the primary of a transformer is of amplitude 7.10 V, the secondary emf is 85.2 V in amplitude. What is the transformer turns ratio
Electrons accelerated by a potential difference of 12.86 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. What is the total charge of the protons that must be fired at the tumor to deposit the required energy
A nuclear power reactor generates 4.2 × 109 W of power. In one year (365.25 days), what is the change in the mass of the nuclear fuel
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Determine the specific heat of the unknown second sample
q1. consider a too-small space station that consists of a 3.8 m radius rotating sphere. a man standing inside is 1.9 m
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