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A 40.0 N crate starting at rest slides down a rough 6.0 m long ramp, inclined at 30 degrees with the horizontal. The force of friction between crate and ramp is 6.0 N. What will be the speed of the crate at the bottom of the incline?
What are the magnitudes of the (a) impulse and (b) average force on the passenger during the collision? If the passenger were to jump upward with a speed of 6.00 m/s relative to the cab floor just before the cab hits the bottom of the shaft, what ..
A 200g block on a frictionless surface is pushed against a spring with spring constant 500N/m, compressing the spring by 2.0cm. at what speed does it shoot away from the spring
A woman stands on a scale in a moving elevator. Her mass is 69.5 kg, and the combined mass of the elevator and scale is an additional 815 kg. What does the scale read during the acceleration
The speed of light in a certain piece of clear plastic is 1.87 108 m/s. A ray of light strikes the plastic at an angle of 17°. At what angle is the ray refracted
Sand from a stationary hopper falls onto a moving conveyor belt at the rate of dm/dt = 5 kg/s, Find the sand's rate of change of momentum in the horizontal direction
Two vehicles approach a right angle intersection and then collide. find the magnitude and direction of the final velocity of the wreck
A lightning bolt consisting of electrons moves from the cloud to the ground near the equator. What direction is the bolt deflected by the Earth's magnetic field
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.80 ? 107 N/m2 and a temperature of 23.0°C. What is the final pressure if one-tenth of the gas escapes
Current passes through a solution of sodium chloride. In 1.00 s, 2.68×1016 Na+ ions arrive at the negative electrode and 3.92×1016 Cl? ions arrive at the positive electrode. What is the current passing between the electrodes
Christian is making a Tyrolean traverse as shown in the figure. That is, he traverses a chasm by stringing a rope between a tree on one side of the chasm and a tree on the opposite side, 23m away.determine the tension force in the rope
a rock is tossed off the top of a cliff of height 34.8 m. Its initial speed is 29.1 m/s, and the launch angle is 29.8 degrees with respect to the horizontal
An air puck of mass m1 = 0.21 kg is tied to a string and allowed to revolve in a circle of radius R = 0.8 m on a frictionless horizontal table. What is the horizontal force acting on the puck
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