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A 3.00-kg block starts from rest at the top of a 30.0degree inclineand slides 2.00 m down the incline in 1.50 s. Find (a) the acceleration of the block, (b) the coefficient of kinetic friction between the block and the incline, (c) the frictional force actingon the block, and (d) the speed of the block after it has slid 2.00m.
When you weigh yourself on good old terra firma (solid ground), your weight is 144 lb . In an elevator your apparent weight is 124 lb.What is the magnitude of the elevator's acceleration? What is the direction of the elevators acceleration?
An outfielder throws a 0.150 kg baseball at a speed of 54.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
A 2500lb car collides with a 25,000 lb truck. What force is exerted on the car by the truck
how much time passes before the brick lands on the ground.
A small puck of mass m=0.1kg moves in a circle of radius 0.3m on a table top; the puck is tied with a massless string to a tether at the origin. find the tension in the string at the end of one revolution
A disk of radius 2.3 cm has a surface charge density of 6.2 µC/m2 on its upper face. What is the magnitude of the electric field produced by the disk
Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible, What is the current in the rod
A 12.7-kg block initially slides at 13.1 m/s on a flat rough surface and eventually stops. what is the entropy change of the system
Starting from rest, two skaters "push off" against each other on smooth level ice, where friction is negligible. One is a woman and one is a man. find the recoil velocity of the man relative to the ice
A thin glass rod is submerged in oil. What is the critical angle for light traveling inside the rod
Vector Identiteis can be proven by grinding them out in component form, but it is more satisfying to use methods based on the integral theorems (Divergence, Stokes etc). Using both approaches
A group of particles is traveling in a magnetic field of unknown magnitude and direction. compute the magnitude and the direction of the magnetic field
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