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Q1. A child goes down a playground slide with an acceleration of 1.20 m/s2. Compute the coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 32.2° below the horizontal.
Q2. A hunter aims straight at a target 120 m away. If the bullet leaves the gun at the speed of 260m/s by how much will it miss the target?
What is momentum of the block
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the first excited state
Compute the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
A 84.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.67 rad/s. Find the angular velocity of the platform with its load
In a serve, a tennis player hits the ball horizontally. Neglect the effects of air resistance and the diameter of the ball. Where will the ball land if it just clears the net
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
The shell, with radius R and negligible thickness, has net charge - 4.00 q. Find an expression for the electric field strength outside the sphere
An asteroid with a rest mass of 8.2 1011 kg is observed to have a relativistic momentum of magnitude 4.54 1020 kg · m/s
A 4.0-mm -diameter wire carries a 10A current when the electric field is 8.6×10?2V/m. What is the wire's resistivity
If you are in a car accident with an initial speed of 119 km/h and you are stopped by an airbag that inflates from the dashboard, over what distance should the airbag stop you for you to survive the crash.
A thin stream of water flows smoothly from a faucet and falls straight down. At one point the water is flowing at a speed of v1 = 1.15 m/s. What is the vertical distance h between these two points
A hot-air balloon is rising upward with a constant speed of 3.88 m/s. When the balloon is 7.87 m above the ground, How much time elapses before the compass hits the ground
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