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A spotlight on a boat is y = 2.7 m above the water, and the light strikes the water at a point that is x = 9.4 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0 m. Determine the distance d, which locates the point where the light strikes the bottom.
Some clear food wraps can be tightly stretched over a container and folded down the sides and they will retain the tension and complete secure of the container. The food wraps stick. How do they do these.
A person can jump a horizontal distance of 2.82m on Earth, where the free-fall acceleration, g = 9.81 m/s2. How far might the person jump on the moon, where the free-fall acceleration is g/6? How far could the person jump on Mars where the accelerati..
At rest when constructed, the ring is set rotating about its axis so that the people inside experience effective free-fall acceleration equal to g. The rotation is achieved by firing two small rockets attached tangentially to opposite points on the r..
A steam turbine is limited to a maximum inlet temp of 800 c the exhaust pressure is .0100 mpa, What is maximum power output per unit mass flow rate
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, What is the total horizontal force on the driver
An object 2.5 cm tall is placed 23.2 cm from the front of a concave mirror with a radius of curvature of 33.1 cm. How tall is it
A Carnot engine whose high-temperature reservoir is at 580 K takes in 520 J of heat at this temperature in each cycle and gives up 309 J to the low-temperature reservoir.
A -100× microscope has an eyepiece whose focal length is 4.5cm. find the focal length of the objective
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
In the system shown in the figure, suppose the block has a mass of 3.3 , the spring has a force constant of 450 , and the coefficient of kinetic friction between the block and the floor is 0.19. Find the work done on the block by the spring
Two hockey players of equal mass are sliding across the ice rink in a straight line directly toward each other. What is the final velocity of player 2
Electrons are accelerated through a voltage difference of 175 kV inside a high voltage accelerator tube. What is the final kinetic energy of the electrons?
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