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A father pushes horizontally on his daughter's sled to move it up a snowy incline, as illustrated in the figure, with h = 4.5 m and θ = 17°. The total mass of the sled and the girl is 35 kg and the coefficient of kinetic friction between the sled runners and the snow is 0.20. If the sled moves up the hill with a constant velocity, how much work is done by the father in moving it from the bottom to the top of the hill?
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere, How many hours does it take this satellite to make one orbit
A cylindrical container 1.1 tall contains mercury to a certain depth. The rest of the cylinder is filled with water.If the pressure at the bottom of cylinder is two atmospheres, what is the depth.
Consider a 80.0-kg man standing on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.46 m/s in 0.550 s. It travels with this constant speed for the next 5.00 s.
a circular disk with a non-uniform mass density is spinning at an angular frequency of 8 s-1 about its axis without
a large asteroid of mass 77100 kg is at rest far away from any planets or stars. a much smaller asteroid of mass 610 kg
In exercising, a weight lifter loses 0.152 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. find the change in the internal energy of the weight lifter
An automobile of mass 1500Kg moving at 25.0 m/s collides with a truck of mass 4500 kg at rest. What is the final velocity of the car and truck just after the collision
Find the total binding energy for Americium, 243Am (atomic mass = 243.061375 u)
A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. evaluate the magnitude of the electric field
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
Obtain the Fourier representation of the output of a full-wave rectifier. Plot the first three terms in the expansion and compare with the exact function
question a ceiling fan with 90-cm-diameter blades is turning at 65 rpm. suppose the fan coasts to a stop 26 s after
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