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A Carnot engine operates between the temperatures of850K and 300K. The engine performs 1200J of work each cycle andeach cycle takes 0.25s to complete.
What is the effciency of this engine?
What is the average power developed by this engine?
How much heat is extracted from the high temperature reservoirduring each cycle?
How much heat is delivered as waste heat to the lowtemperature reservoir during each cycle?
Assuming the can to be a cylinder with a height of 15cm and a diameter of 6.4cm , find the net inward force exerted on the vertical sides of the can due to atmospheric pressure
The mass of a newborn baby's brain has been found to increase by about 1.6 mg per minute. How much does the brain's mass increase in one day
A playground merry-go-round has radius 2.90m and moment of inertia 2500kg?m2 about a vertical axle through its center, and it turns with negligible friction. How much work did the child do on the merry-go-round
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. What is her velocity relative to land
A horizontal force of magnitude35.5N pushes a block of mass4.15kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600. How much work is done by that applied force on the block-floor system?
A ball is dropped from a hot air balloon that is accelerating upward at 10 ft/sec2. What is the acceleration of the ball upon its release
When a 0.20-kg mass is suspended from a vertically hanging spring, it stretches the spring from its original length of 3.0 cm to a total length of 7.0 cm. What is the maximum speed of the mass as it oscillates
In an L-C circuit, C=3.21*10^-6 F and L=86.0mH. During the oscillations the maximum current in the inductor is .851mA. What is the maximum charge of the capacitor
The ice has a thickness of 4.75 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. Explain how much heat is required to melt the ice?
How long must a 0.60 mm diameter silver wire be to have a 0.56 A current when connected to the terminals of a 1.5 V flashlight battery
A proton moves through a magnetic field at 25.9% of the speed of light. what is the magnitude of the magnetic force acting on the proton
q1. a dentists drill starts from rest. after 3.20 s of constant angular acceleration it turns at a rate of 2.46 104
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