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A 82.7 kN car is travelling at 57.7 mph when the driver decides to exit the freeway by going up a ramp. After coasting 369 m along the exit ramp the car's speed is 29.3 mph, and it is h= 11.3 m above the freeway. What is the magnitude of the average drag force exerted on the car?
__________ N
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you found in part (1). What should be the maximum speed of the car so it can round the curve safely.
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
A ray of light is incident on the surface of a block of clear ice at an angle of 33.0° with the normal. Find the angle between the reflected and refracted light
A 30-06 caliber hunting rifle fires a bullet of mass 0.0122 kg with a velocity of 247 m/s to the right. The rifle has a mass of 3.2 kg. What is the recoil speed of the rifle as bullet leaves the rifle.
A car completes one lap in a time of 19.3 s, with an average translational speed of 45.2 m/s. What is the radius of the track, and what was the car's average angular speed for that lap
A 500 kg polar bear of average density 950 kg/m3 is stranded on a melting chunk of ice in the ocean. What is the smallest volume of ice that will keep the bear entirely above water
the volume of a gas is decreased by a constant external pressure of 0.200atm, changing from 2.10 litters to 0.58 litters. during this compression
A vertical solid steel post of diameter d = 24cm and length L = 2.10m is required to support a load of mass m = 8200kg. What is the strain in the post
A television set connected to a 120 outlet consumes 76 of power. How much current flows through the television
Two small plastic spheres, one charged to -25 nC and the other to +25 nC , are connected by a 28-mm-long insulating rod. What is the maximum possible torque on the dipole
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