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A 70.0kg archer, standing on frictionless ice, shoots a 100g arrow at a speed of 50m/s.
What is the recoil speed of the archer?
ray of light comes to the interface that is part of a sphere of radius r=15.0 cm. Where does the refracted ray cross the principal axis if the incident ray is 5.0 cm away from the principal axis
Earth has a net charge that produces an electric field of approximately 150 N/C downward at its surface. (a) What is the magnitude and sign of the excess charge, noting the electric field of a conducting sphere is equivalent to a point charge at i..
A Ge semiconductor has a gap of 0.7 eV between the valence and conduction band. What fraction of the electrons are in the conduction band
An 845-N sled is pulled a distance of 170 m. The task requires 1.10 x10^4 J of work and is done by pulling on a rope with a force of 12N. At what angle is the rope held.
What is the minimum time necessary for crossing.
A Geosync TV satellite of mass 2000 kg is in a circular orbit around the earth, making one revolution or orbit every 24 hrs, What is the magnitude of the centripetal acceleration
The puck has a mass of 0.140kg. Its original distance from the center of rotation is 40.0 cm, and it moves with a speed of 70cm/s. The string is pulled downward 15cm by the hole in the frictionless table. Determine the work completed on the puck.
In 2.0 minutes, a ski lift raises six skiers at constant speed to a height of 175 m. The average mass of each skier is 65 kg. Illustrate what is the average power provided by the tension in the cable pulling the lift?
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
A very thin sheet of glass (n=1.5) floats on the surface of water (n=1.33). When illuminated with white light at normal incidence, What is the thickness of the glass
A 3.13{\rm k \Omega} resistor is connected to a generator with a maximum voltage of 131{\rm V} . Find average power, and maximum power
Find out (a) the coefficient of kinetic friction between m2 and the incline, (b) the acceleration of each mass, and (C) the tension in the string.
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