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A 100g ball on a 50 cm long string is swung in a vertical circle about a point 200 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 600cm above the floor. What was the tension in the string an instant before it broke?
A particle known as a pion lives for a short time before breaking apart into other particles. According to this hypothetical person, how far does the laboratory move before the pion breaks apart
Observer S detects two flashes of light. A big flash occurs at x1 = 1242 m and, 6.06 ?s later, a small flash occurs at x2 = 802 m. what is the time interval between the flashes
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
A ball swings in a vertical circle at the end of a rope 1.50 mlong. When the ball is 36.9° past the lowest point on its wayup, determine the speed and velocity of the ball
You are a professional frontier re-enactor who specializes in making lead shot. To do this you put 1.3 kg of ice into 1.3 kg of water, both at 0 C, into an insulated bucket.
A diffraction grating with 330 {rm lines/mm} is 1.00 {rm m} in front of a screen. What is the wavelength of light whose first-order maxima will be 17.0 {rm cm} from the central maximum on the screen.
A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile), What is its average power output in watts and horsepower
A boxer receives a horizontal blow to the head that topples him over. The force, of magnitude 1.06 x 10^3 N, is applied for 1.1 x 10^-2 s at a point 1.82 m above the floor. Find the boxer's final angular velocity
You are standing on a platform and you throw a 5kg ball horizontally with a speed of 10m/s. Find the time it takes the ball to hit the ground
Three electrons are aligned on a straight line and separations between them are 1.0mm. What is the electric potential energy of the center electron
Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
A clock in a spaceship is observed to run at a speed of only 3/5 that of a similar clock at rest on Earth. How fast is the spaceship moving
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