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The side of a hollow cubical box is 0.4 m. The box floats in ariver with one fourth of it's height beneath the surface. Thewalls of the box have negligible thickness. If a dense liquid ispoured into the box (density = 1254 kg/m3), what is the depth of the liquid in the box at the instant the box begins to sink? Density of water is 1000 kg/m3.
As part of a carnival game, a 0.578-kg ball is thrown at a stack of 17.8-cm tall, 0.383-kg objects and hits with a perfectly horizontal velocity of 12.8 m/s. what is the moment of inertia of the object about its center of mass
A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m/s above the floor. how long does it take to reach the floor.How far from a point on the floor directly below the edge of the bench would the ball land.
Hubble Space Telescope resolves sources
A 1.3-kg block of ice is initially at a temperature of -6.0%u2218C. If 3.0*10^5 J of heat are added, what is the final temperature
a hydrogen atom is in the n=15 state. In the Bohr model, how many electron wavelengths fit around this orbit
A mirror that is spherical has a focal length of -15 cm. what type of image would it be, What is the magnification going to be
An archer pulls the bowstring back for a distance of0.550 m before releasing the arrow. Thebow and string act like a spring whose spring constant is490 N/m. What is the elastic potential energy of the drawn bow?
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 140 N. What is the radius of the brass ball
two positive point charges q1 16 micro coulombs and q2 4 micro coulombs are seperated in a line by a distance of 3
A mountain climber stands at the top of a 52.8m cliff hanging over a calm pool of wat. Find the velocity of the first stone at the instant both stones hit the water
the power supplied to a typical black-and-white television set is 94 w when the set is connected to 120 v. a how much
A 7 g bullet has a speed of 270 m/s and embeds itself into a 600 g block. How far does the block slide after the collision before coming to rest
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