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A Carnot engine extracts 529 J of heat from a high-temperature reservoir during each cycle, and rejects 225 J of heat to a low-temperature reservoir during the same cycle. What is the efficiency of the engine?
a 2.2 kg object slides down a frictionless track starting 0.35 m above the ground to a horizontal surface where it
The coefficient of static friction is .6 and the ladder makes a 50 degree angle with the ground. Elucidate how far up the ladder can an 800 newton person climb before starts to slip
A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is charged by an external source with a charging current of 1.2 A. What is the potential difference across the battery
A suvey ship on an oceanographic mission sends out a test sound and detects the echo of the wave reflected from the ocean floor directly below 1.291 s later. How deep is the ocean at this point
Capacitors C1 = 5.60 µF and C2 = 2.45 µF are charged as a parallel combination across a 250 V battery, Calculate the resulting charge on each capacitor
calculate the first and second order angles for light of wavelength 675 nm for a diffraction grating contains 8000
A starship voyages to a distant planet 10 ly away. The explorers stay 4.00yr , return at the same speed, What is the speed of the starship
A 35.0-mH inductor has a reactance of 1.80 k. What is the frequency of the ac current that passes through the inductor
A car starts from rest and moves around a circular, horizontal,level track of radius 30.0 m. Its speed increases at the constantrate of 0.500 m/s2. (a) What is the magnitude ofthe net acceleration 15.0 s later?
The spring of the pressure gauge shown in the figure below has a force constant of 1471 N/m, what change in depth causes the piston to move in by 0.750 cm
A battery in a circuit has an emf of 8.8 V. The only other component in the circuit is a resistor. 4.4 A of current flows in the circuit. What is the potential difference across the battery
The windpipe of a typical whooping crane is about 4.5 ft long. What is the lowest resonant frequency of this pipe, assuming that it is closed at one end
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