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What is the total force on the bottom of a swimming pool 13.0m by 6.9m whose uniform depth is 2.1m ? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
A spring has a spring constant k = 0.84 N/m. If it is stretched 0.13 m from its equilibrium position, what is the restoring force of the spring
A major leaguer hits a baseball so that it leaves the bat at a speed of 30.0 m/s and at an angle of 36.9o above the horizontal. Calculate the horizontal and vertical components of the baseball's velocity
A converging lens has a focal length on both sides of 24.0 cm. An object is placed to the left of the lens at 14.0 cm. The object is 8.0 cm in height. Is the image to the left or right of the lens
Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury and does 4.0 J of work during each cycle. What is the temperature of the colder reservo..
find the angular displacement of the propeller.
A soccer ball is kicked with an initial horizontal velocity of 16.0 m/s and an initial vertical velocity of 18.0 m/s. How far from where it was kicked will the ball land
A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
q1. an electrical generating plant operates at the boiler temperature of and exhausts the unused heat into a nearby
Estimate the pressure exerted on a floor by the following one pointed chair leg (56 kg on all four legs) of area = 0.06 cm2 N/m2
Starting from rest,a 10 cm diameter compact disk takes 3.0 s to reach its operating angular velocity of 2200 rpm. assume that the angular acceleration is constant.
a standing wave is in a open-end tube as shown. the tube legth is L = 1.80m. determine the wavelength of the standing wave
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