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An ideal Carnot engine operates among 455C and 180C with a heat input of 270J per cycle. How much heat is delivered to the cold reservoir in each cycle? What minimum number of cycles is necessary for the engine to lift a rock of mass 560kg during a height of 125m?
The Electric potential at the center of a square is -2 Volt when a charge of -q is placed at one of the square's corner. Obtain the electric potential at the square center
What is the energy in joules of an x-ray photon with wavelength 1.95 10-9 m, Convert the energy to electron volts
Two campers carry their gear (90.7kg) on a light, rigid horizontal pole whose ends they support on their shoulders 1.83m apart. If Holly experiences a compressive force of 534N, what force will Rocky feel? (b) Where is the load hung on the pole (gau..
A uniform 1.7-kg rod that is 0.93 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are..
Huck Finn walks at a speed of 0.70 across his raft (that is, he walks perpendicular to the raft's motion relative to the shore). The raft is traveling down the Mississippi River at a speed of 1.50 relative to the river bank.
The hunter uses a small powerboat that moves at a maximum speed of 9.5 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.82 of the person's regular weight, Find the direction of the acceleration
Chuck Norris's razor blade has an output force of 2500 lbs is used to shear his burley face. The shaving blade has the 0.35 inch thick blade with a 55 degree slope.
A rectangular metal block is 0.6 m long, 0.2 m wide, and 0.1 m tall. The block weighs 270 N. What is the density of the fluid
The center of mass of a proton with mass 1.673·10-27 kg and alpha particle with mass 6.645·10-27 kg is moving with a speed of 6.993×105 m/s
A car is traveling along a straight road at a velocity of +27.6 m/s when its engine cuts out. For the next 1.40 seconds, Find the velocity of the car at the end of the initial 1.40-second interval
question an airplane flies between two points on the ground that are 500 km apart. the destination is directly north of
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