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An extreme skier, starting from rest, coasts down a mountain that makes an angle of 34.3 ° with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.175. She coasts for a distance of 10.4 m before coming to the edge of a cliff. Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.24 m below the edge. How fast is she going just before she lands?
illuminate the object with the flashlight. One way to produce artificial gravity in a space station is to spin it.
A speeder passes a parked police car at 30 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.44 m/s2.
Light of wavelength 670nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 49mm, What is the separation of the two slits
q1. the temperature of the glass surface of a 30 w light bulb is 75degc when the room temperature is 10degc. estimate
A brass rod with a length of 10.0 cm is placed end to end with an aluminum rod with a length of 30.0 cm, What is the heat flow from the hot temperature to the cold temperature
Find graphically magnitude and direction of resultant force
A horizontal uniform bar of mass 2.9kg and length 3.0 m is hung horizontally on two vertical strings. String 1 is attached to the end of the bar, and string 2 is attached the distance 0.74 m from the other end.
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of81.0m/sat ground level. What is its velocity just before it hits the ground
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles, What is the magnitude of Betty's force
A Japan Airlines Boeing 747 accelerates from rest to lift-off speed of 78.51 m/s in 28.20 s. What is the mass of the plane
A motor attached to a 120 V/60 Hz power line draws an 8.10 A current. Its average energy dissipation is 810 W. What is the motor's resistance
Compute the magnetic flux
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