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A Carnot engine operating among energy reservoirs at temperatures 342 K and 459 K produces a power output of 1149 W. What is the thermal efficiency of this engine? The answer to the first part is 25.4902 what is the rate of heat input, in W? What is the rate of heat output, in W?
A 34-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, How high does she rise during this interval
A driver releases an air bubble of volume 2.0 cm3 from adepth of 15 m below the surface of a lake, where the temperature is7.0oC. What is the volume of the bubble when it reachesjust below the surface of the lake, where the temperature is20oC?
Calculate the energy of the planet, perihelion and aphelion distances and the speed of the planet at these points - Explain why hurricanes spin counter clockwise in the Northern hemisphere and clockwise in the Southern hemisphere.
A hotel elevator ascends 170m with a maximum speed of 4.4m/s. Its acceleration and deceleration both have a magnitude of 1m/s2.
what is the specific enthalpy of saturated steam at a temperature of 464 degrees F? If you have 75 lbs of this steam, what is the total volume
A satellite in a circular orbit around the earth with a radius 1.011 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
A car of 1200 kg travels east at 24 m/s while a truck of 2200 kg travels north at 19 m/s They collide and stick together. a) What is the momentum in the system? b) What is the final velocity (magnitude and direction) after the collision?
The driver of an 1800 {kg} car travelling on a horizontal road at 100 kmh suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0 percent of the weight o..
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
A space traveler weighs 130 pounds on earth. What would the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth.
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
two charges are placed between the plates of a parallel plate capacitor. one charge is q1 and the other is q2 4.66c.
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