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A cowboy at a dude ranch fills a horse trough that is 1.6 m long, 74 cm wide, and 42 cm deep. He uses a 2.2 cm diameter hose from which water emerges at 1.1 m/s . How long does it take him to fill the trough? Answer in units of min.
At a distance of 4.32m from a siren, the sound intensity is 3.75 x 10-2 W/m2. Assume that the siren radiates sound uniformly in all directions; find out the total power radiated.
An interferometer can be used to measure very small distances, much like a caliper but with a far greater precision. How far did the movable arm of the interferometer travel
Fighter airplane is flying horizontally at the altitude h=5000m with velocity of u=100m/s. When airplane passes directly above an air defense station, find the horizontal distance s from the fun to the point of impact
The only force on a 4.0-kg body as it moves along the x axis is given by Fx = (14 - 6.1x) N, where x is in m. find the maximum kinetic energy attained by the body
A red light of wave length 6.65x10^-7 is an incident beam perpendicular to a surface of glass. n=1.65 for glass. Calculate wavelength of red light in film
The bowling ball has a diameter of 20.6 {rm cm}, and the angle the stick makes with the horizontal is 30.0 {rm ^circ}. You may suppose there is no friction between the stick and the bowling ball, though friction with the floor must be taken into acco..
A 232-kg satellite is in circular orbit around the Earth and moving at a speed of 4.88 km/s. How much work must be done to move the satellite into another circular orbit
If the magnitude of the drift velocity of free electrons in a copper wire is 6.28 10-4 m/s, what is the electric field in the conductor
question1a 12.0kg shell is launched at an angle of 55.0 degrees above horizontal with an initial speed of 150 ms. when
A hare and a tortoise compete in a race over a straight course 0.90 km long. The tortoise crawls at a speed of 0.300 m/s toward the finish line, For how long in time was the hare stationary
A 294 N force is pulling an 82.6-kg refrigerator across a horizontal surface. The force acts at an angle of 24.4 ° above the surface. calculate the work done by the kinetic frictional force
A spider's web can undergo SHM when a fly lands on it and displaces the web. For simplicity, what is the frequency of oscillation when the fly lands
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