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Gabriele Reinsch threw a discus 76.80 m on July 9, 1988, to set the women's world record. Assume that she launched the discus with an elevation angle of 45o and that her hand was 2.0 m above the ground at the instant of launch. What was the initial speed of the discus required to achieve that range?
Calculate the absolute pressure at an ocean depth of 75 m. Assume the density of sea water is 1 028 kg/m3 and the air above exerts a pressure of 101.3 kPa
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. find the total kinetic energy of the automobile
A soap film whose index of re%uFB02ecetion is 1.33 is suspended in air. When sunlight strikes the film nearly perpendicularly, Find the thickness of the film
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
A spaceship needs to change its course thus that the magnitude of its momentum p remains the same but the direction changes by the angle α. Obtain the minimum time for which the engines must be turned on
A flat horizontal surface with an area of 505 cm2 is inside a uniform electric field of 1.40×104 N/C. What is the electric flux through the surface
A single rectangular wire loop (width a=0.4 m, length b=0.63 m) is moving with a speed of 3.4 m/s to the left out of an area with a 105 mT magnetic field. What is the magnitude of the induced voltage
a bicyclist is traveling at a speed of 20m/s as he approaches the bottom of a hill. He decides to coast up the hill and stops upon reaching the top. determine the vertical height of the hill
markings to indicate length are placed on a steel tape in a room that is at a temperature of 22degc. measurements are
A converging lens (f = 14.9 cm) is located 23.0 cm to the left of a diverging lens (f = - 8.99 cm). Find the overall magnification
Compute the average force the beam exerts on the pile driver while the pile driver is brought to rest
The winner of the competition wants to know if he has broken the world record for the break shot of 32mph (about 14.3m/s). The ball landed a distance 5.15m away from the table edge, calculate his break shot speed. At what speed did his pool shot h..
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