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A 61.0-kg skier starts from rest at the top of a ski slope of height 67.0 m
a)The skier crosses a patch of soft snow, where the coefficient of friction is 0.19. If the patch is of width 64.0 and the average force of air resistance on the skier is 180, how fast is she going after crossing the patch?
A current of 13.9 A flows through an electric heater operating on 120 V. What is the heater's resistance
A rocket is launched at an angle of 59° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 28m/s2.
A soccer player kicks a rock horizontally off a 34.0-m-high cliff into a pool of water. what was the initial speed given to the rock
A 150- crate, starting from rest, is pulled across a floor with a constant horizontal force of 360 . For the first 11 the floor is frictionless, and for the next 11 the coefficient of friction is 0.31. Illustrate what is the final speed of the c..
A pulley cable system on a construction site lifts 20,000 N concrete block to a height of 40 m. If this takes 2 minutes what is the power of the pulley cable system
Mario is watching Luigi fly past in a spaceship at 1.63×108 m/s. How long does an hour on the ship last, according to Luigi
a series rlc ac circuit has resistance r = 200 ohms, inductance l = 0.500 H, capacitance c = 4.00 uf, frequency 60.0 hz, What are the maximum voltages across the elements
We have a container of a hot ideal monatomic gas. The volume of the container is 25 liters. determine the change of internal energy of the gas
An electron in a cathode-ray tube is emitted from a hot filament at a negligible speed. , whereupon it accelerates across a potential difference of 1.00 x 106 V. Determine its final speed compared to the classical result.
A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other, taking 4.00 s. find the ratio of the man's running speed to the sidewalk's speed
A wheel 55.0 cm in diameter accelerates uniformly from 215 rpm to 370 rpm. how long does this process take
It takes the Mars rover 4.5 minutes to send information via a radio signal traveling at the speed of light back to Mission Control on Earth. How far away is the rover
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