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A 0.25 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 17° with the horizontal. Determine the speed of the stone?
A spring with k = 30.0 N/m is at the base of a frictionless 30.0° inclined plane. how far up the incline does it travel before coming to rest
A person of mass 75 stands at the center of a rotating merry-go-round platform of radius 2.8 and moment of inertia 920. The platform rotates without friction with angular velocity 1.78. The person walks radially to the edge of the platform. Compute a..
At 12°C, a brass cube has an edge length of 25 cm. What is the increase in the cube's surface area when it is heated from 12°C to 97°C
A ball thrown horizontally at 23 m/s travels a horizontal distance of 55 m before hitting the ground. From what height was the ball thrown
question1a red train travelling at 63 kmh and a green train travelling at 140 kmh are headed toward one another along a
An 84 kg skier is being pulled by a boat with a force of 240 N causing the skier to accelerate at 1.4 m/s^2. Find out the drag force on the skier.
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
At a certain instant, a ball is thrown downward with a velocity of 8.0 m/s from a height of 40 m. find the time when the balls collide
A diving chamber is cylindrical in nature with the bottom open above the surface of the water the chamber's volume is completely filled with air as the chamber is submerged the air is compressed to a smaller volume
A diver 60 m deep in 10 C fresh water exhales a 1.5-cm-diameter bubble. find the bubble's diameter just as it reaches the surface of the lake
A 60 kg woman in an elevator is accelerating upward at 1.2 m/s^2. what is the normal force pushing upward on her feet
You are at a rock concert and find that when you stand 15 m from a speaker, the intensity is so high that it hurts your ears. how far from the speaker should you stand
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