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A father pulls his young daughter on a sled with a constantvelocity on a level surface a distance of 10 \rm{m}If the total mass of the sledand the girl is 40 kg and the coefficient of kinetic frictionbetween the sled runners and the snow is 0.17, how much work does the father do?
My moter has effciency of 80% with a flywheel attached to its shaft. The flywheel had a diamter of 2 ft and weighs 40 pounds. What is the input power in watts
A Carnot engine operates between a high temperature reservoir at 492 K and a river with water at 290 K. how much work per cycle does it perform
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite has an orbital period around the Earth that is the same as that of the Moon, 27.3 days. How far away from the Earth should ..
A gas mixture contains 2.50 mol of O2 and 3.00 mol of Ar. What is the molar specific heat at constant pressure for this mixture
The picture below represents the crests of water wavesspreading out from a periodic disturbance in a pond. The phasedifference (in degrees) between points A and E is
A thin gold ring of radius 1.02 cm carries a uniform charge per unit length of 1.02e-14 C/m. Find the electric field on the axis of the ring 1.09 cm from the center magnitude.
the speed of a transverse wave on a string is 581 ms while the wavelength is 0.268 m. the amplitude of the wave is 2.60
The carts of a roller coaster are traveling 2 m/s over the top of the first hill. what speed will the carts have at the bottom of the hill
At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertical shaft through a distance of 132 m. How fast will the payload be traveling when it reaches the bottom of the shaft
A cord of length 1.0m has two equal-length sections with linear densities of 0.50 kg/m and 1.00 kg/m The tension in the entire cord is constant. What is the ratio of the oscillatory frequencies
A bead of mass m slides without friction down a track and around a loop-the-loop of radius R. The initial height of the track is h = 3.5R. What is the speed of the mass after going around the loop
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. The tree is 24 m tall and 85 m away. What is the size of the image of the tree on your retina
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