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Question: A concrete cube, 0.5 meters on each side, is lowered beneath the surface of a lake. At what depth is the water around it exerting an inward force of 170000 newtons on each face of the cube?
A small spherical lump of conductor, with a radius R = 0.1m, has a charge of 0.01 C placed on it. Compute the electrostatic potential energy of the system
A straight rod consists of a 2cm long piece of aluminum attached to a 3cm long piece of steel. calculate the change in length of the aluminum rod
A system of two paint buckets connected by a light weight rope isreleased from rest with the 12.0-kg bucket 2.00m above the floor. find the speed withwhich this bucket strikes the floor
Calculate the force of gravity on a spacecraft 32000 km (5 earth radii) above the Earth's surface if its mass is 1800 kg. N (toward the earth)
A 20 x microscope objective is designed for use in a microscope with a 17 cm tube length. The objective is marked NA = 0.45. What is the diameter of the objective lens
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. Find the force AND the direction of the friction
Light of wavelength 550nm in a vacuum is found to travel at 1.96*10^8m/s in a certain liquid. Determine the index of refraction of the liquid
A composite bar made from two different materials of equal cross-sectional areas are directly attached to each other making the bar a length of L = L1 + L2.
1. gaseous helium is to be used to quench a hot piece of metal. the helium is in storage in an insulated tank with
Tritium with a half-life of 12.3 years is used to verify the age of expensive brandies. how many years ago was it produced
An ocean liner leaves New York City and travels 18.0° north of east for 232 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the following directions.
A 13 g bullet traveling 215m/s penetrates a 2 kg block of wood and emerges cleanly at 157m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after bullet emerges.
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