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An ice sheet with area 10:0 m x 10:0 m and uniform thickness of 1.20 m floats in the Arctic Ocean. Assume that the density of ice is 917 kg/m3 and the density of seawater is 1030 kg/m3.
(a) Find the buoyant force acting on the ice sheet.
(b) By how much does the ice sheet stick above the surface of the water if a polar bear with mass 520 kg climbs on top of it.
When an electron in a hydrogen atom falls from a higher energy state down to the ground state, What is the quantum number of the level from which the electron fell
For a particular collision you detect the emitted products and find 15 protons, 2 antiprotons, 6 positrons, and 25 neutral particles. How many electrons are also emitted?
A 38.00 kg girl is bouncing on a trampoline. All throughout a certain interval after she leaves the surface of trampoline, her kinetic energy decreases to 185J from 425J. How high does she rise all through this interval? Avoid air resistance.
Calculate the acceleration of a skier heading down a 10.0 deg, slope, assuming the coefficient of friction for waxed wood on wet snow
q1. stationary bicycle is raised off the ground and its front wheel m 1.3 kg is rotating at an angular velocity of
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. How far must the faster car travel before it has a 15-min lead on the slower car
Your car's fan belt turns a pulley at 3.15rev/s . When you step on the gas for 1.60s , the rate increases steadily to 5.95rev/s . What's the pulley's angular acceleration
Consider an object that is hot enough to glow violet blue (a peak frequency of 7.5 x 1014 Hz). What is the temperature of this object
A 28.0 kg block is connected to an empty 2.00 kg bucket by a cord over a frictionless pulley, Calculate the mass of the sand added to the bucket.
For a short time, the path of the plane is described by If the plane is rising with a constant velocity of 10 m/s, determine the magnitudes of the velocity and acceleration
Calculate the peak voltage of a generator that rotates its 210 turn, 0.100 m diameter coil at 3600 rpm in a 0.830 T field
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