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A stone is being accelerated vertically upward by a string attached to it. Now suppose the string breaks and the stone slows in its upward motion. What is the acceleration of the stone at the top of its path?
A space station in the forf of a large wheel, 129m in diameter, rotates to provide an "artificial gravity" of 6.10 m/s^2 for people located at the outer rim.
A shopper walks from the door of the mall to her car 250m down the line of cars, and then turns 90 degrees to the right and walks an additional 60 meters. What is the magnitude of the displacement of her car from mall door.
Some athletes can put out as much as 800 watts in short bursts. If you could sustain such energy output long enough to reach the top of a mountain, how much time would it take you to get there from the valley, 3000 meters below the peak? So how does ..
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum charge on the dome
A light plane is headed due south with a velocity of 157 km/h relative to still air. After 1.00 hour, the pilot notices that they have covered only 121 km and their direction is not south but southeast (45.0^circ).
A 5.00 g charged insulating ball hangs on a 27.0 cm long string in a uniform horizontal electric field. Given the charge on the ball is 2.00 ?C , find the strength of the field. The angle that the string makes with the vertical is 8.00° N/C.
A 0.75m diameter solid sphere may be rotated about an axis through its center by a torque of 11.5m*N which accelerates it uniformly from rest through a total of 180 revolutions in 16.0 s.What is the mass of the sphere.
Find the acceleration of an elerton in this field. What is its speed after 50ms.
Calculate the angular velocity of the wheel when the suitcase reaches the ground. compute the moment of inertia of the wheel.
A man stands on the roof of a building of height 16.8m and throws a rock with a velocity of magnitude 31.8m/s, Calculate the magnitude of the velocity of the rock just before it strikes the ground
A broad beam of light of wavelength 485nm is incident at 90° on a thin, wedge-shaped film with index of refraction 1.50. An observer intercepting the light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. By..
Explain how much waork has been done against gravity when the crate is raised a vertical distance of 2.19 m? The coefficient of friction is 0.316.
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