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A child on a sled starts from rest at the top of a 15.0 degree slope. If the trip to the bottom takes 15.2s, how long is the slope? Assume that frictional forces may be neglected. PLEASE HELP AND SHOW STEPS.
A solid disk of mass m1 = 9.3 kg and radius R = 0.23 m is rotating with a constant angular velocity of ? = 33 rad/s. find the initial angular momentum of the rod and disk system
A tractor pulls a sled of mass M = 1375 kg across level ground. The coefficient of kinetic friction between the sled and the ground is ?k = 0.605, What magnitude of tension in the rope is necessary to move the sled horizontally
how far is this point horizontally from the end of the ramp. A skateboarder shoots off a ramp with a velocity of 6.2 m/s, directed at an angle of 61° above horizontal. The end of the ramp is 1.5 m above the ground.
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. The moment of inertia of the plank about the pivot is .
Two point charges have a total charge magnitude of 576 µC. When placed 1.19 m apart, the force each exerts on the other is 20.2 N and is repulsive. What is the charge magnitude on each? Please include solution.
Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
Calculate the magnitude of the gravitational force exerted on a 462-kg satellite that is a distance of 2.08 earth radii from the center of the earth. What is the magnitude of the earth's acceleration
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. determine the magnitude of the deceleration
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.69 m and 1.04 m, respectively. The respective rotational speeds are 452 rev/min and 4,140 rev/min. Calculate the speeds of the tips of both rotors
Suppose a soccer player kicks the ball from a distance 21.5 m toward the goal. Find the initial speed of the ball
Jack wants to build a radio to tune to a station at 520 MHz. He has available 0.25 micro hertz inductor, What value of capacitance should be used
You have 3.0 moles of helium gas initially at a temperature of 350 K, and a pressure of 0.20 x Patm, How much heat flows into the gas
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