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An extreme skier, starting from rest, coasts down a mountain thatmakes an angle of 39.3 ° with the horizontal. The coefficientof kinetic friction between her skis and the snow is 0.227. Shecoasts for a distance of 18.3 m before coming to the edge of acliff. Without slowing down, she skis off the cliff and landsdownhill at a point whose vertical distance is 4.68 m below theedge. How fast is she going just before she lands?
A Carnot engine absorbs 940 J of heat each cycle and provides 380 J of work. How much heat is rejected each cycle
What is the power output in horsepower of an electric motor turning at 4550rev/min and developing a torque of 4.75N, Calculate the angular momentum of a solid uniform sphere
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. What is the initial velocity of the green car
A duck is floating on a lake with 22% of its volume beneath thewater. What is the average density of the duck? A 0.50 m multiplied by 0.50 m multiplied by 0.90 m block issuspended from a wire and is completely under water. What buoyant force acts o..
A rock with mass m = 3.70 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 19.3 N and by a fluid resistance force.
A 50 kg sled is subject to a net force of 20 N pushing in the direction of the sled motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. find the work done by friction while the sled is on the incl..
If an R = 1.0-kW resistor, a C = 1.0-mF capacitor, and an L = 0.20-H inductor are connected in series with a V = 150 sin (377t) volts source, what is the maximum current delivered by the source?
How many 119W light bulbs can you use in a 134V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each light bulb is 134 V.)
A 16 g bullet strikes and becomes embedded in a 1.10 kg block of wood placed on a horizontal surface just in front of the gun. what was the muzzle speed of the bullet
A set of charges are arranged in the following way: a 10.0 nC (nanocoulomb) positively charged particle sits at the origin of a coordinate system, Sketch a diagram of this charge configuration
A model airplane with mass 0.743 kg is tethered to the ground by a wire so that it flies in a horizontal circle 29.7 m in radius. The airplane engine provides a net thrust of 0.810 N perpendicular to the tethering wire.
A 0.33-m-long violin string has a mass of 0.89 g. The peg exerts a 45 N force on it. Determine the lowest frequency sound produced by the vibrating sting
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