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Children sled down a 44m -long hill inclined at 23 degrees. At the bottom, the slope levels out.
A) If the coefficient of friction is 0.11, how far do the children slide on the level ground?
A 62 kg woman cheats on her diet and eats a 637 Calorie (637 kcal) jelly donut for breakfast. How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut
A 662 KeV photon from 137Cs is compton scattered at an angle 60, calculate the energy of the scattered photon
A nuclear power plant generates 3000 MW of heat energy from nuclear reactions in the reactor's core. What is the plant's actual efficiency
A father pulls his children in a wagon for 25 minutes covering 1.25 miles on a level sidewalk. What is the average horsepower required
The loaded cab of an elevator has a mass of 2.8 x 103 kg and moves 223 m up the shaft in 26 s at constant speed. Explain at what average rate does the force from the cable do work on the cab?
Two identical particles, each with a mass of 4.5 mg and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 at an instant, How far apart will they be when closest to one another
How much heat energy can created throughout motion
A) How fast should the car be traveling just as it leaves the cliff in order to just clear the river and land safely on the opposite side? B) What is the speed of the car just before it lands safely on the other side?
A 60 g bullet traveling at 230 m/s penetrates a block of ice at 0°C and comes to rest within the ice. suppose that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision.
How high up a frictionless incline could mass climb? How far could the mass skid on a level table with a static mu of 0.70 and a kinetic mu of 0.50.
A rectanglar block of iron 9.68x10^-8 ohms has dimensions 1.20 X 1.60 X 2.50 cm, What is the minimum resistance of the block
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
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