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A child pushes a merry-go-round with a force of 50.0 N at an angle tangent to the circle (that is, perpendicular to a radius). If the child pushes it through exactly one full circle, and the merry-go-round has a radius of 1.15 m, how much work does she do?
The velocity component of the particle at x = 8.0 m is 2.8 m/s. Illustrate what is the acceleration component during this time interval?
Carbon disulfide (CS2) has a vapor pressure of 300 Torr at room temperature (almost half of atmospheric pressure). estimate the average time between collisions
A lamp which is 12.0 cm tall is 264.0 cm in front of a converging lens which has a focal length of 80.0 cm, What is the image distance for this lamp and lens combination
A uniform plank of length 4.9m and weight 228N rests horizontally on two supports, with 1.10m of the plank hanging over the right support. To what distance x can a person who weighs 449N walk on overhanging part of the plank before it just begins ..
Find the net downward force on the tank's flat bottom, of area 2.25m2 , exerted by the water and air inside the tank and the air outside the tank
In a three pulley system a man who weighs 875.0N is standing upright holding on one end of the rope while the other end is tied to his feet. Estimate the normal force from the ground
if the boy is traveling at 1m/s relative to the ground, explain how fast does the boy appear to be moving relative to the woman?
The relative angle of the knee changes from 5 degrees to 85 degrees during the knee flexion phase of a squat exercise. What is the total angular distance covered during 5 squats
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 12.0 m/s, and the distance from the limb to the level of the saddle is 4.00 m.
A soccer ball is kicked with an initial speed of 9.8 m/s. After 0.200 s it is at its highest point. What was its initial direction of motion
the speed of sound in helium is 965 m/s. if the density of helium is 0.179 kg/m^3, then what is the bulk modulus of helium
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
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