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Liquid water with density p,(rho), is filled on top of a thin piston in a cylinder with cross-sectional area A and total height H. Air is let in under the piston so that it pushes up, causing the water to spill over the edge. Derive the formula for the air pressure as a function of piston elevation from the bottom, h.
Two freight cars, each with a mass of 2.9 x 10^5 kg, collide and stick together. One was initially moving at 2.80 m/s and the other was at rest. What is the final speed.
A boy throws a rock from the roof of his house at a velocity of 14.5 m/s and an angle of 41 degree. does the rock reach the river
A helicopter is ascending vertically with a speed of 5.30{rm m/s}. At a height of 120 {rm m} above the Earth, package is dropped from a window.
Consider a 18 micro-farad and a 82 micro-farad capacitor that are connected in parallel. How much energy E (in J) does the battery transfer to the capacitors
a mixture of na2co3 and baco3 weighing 0.2000 g requires 30.00 ml of 0.1000 n acid for complete neutralization. what is
It is possible to produce artificial gravity on a space station by having the station rotate. Explain how this would work. What would be some benefits and drawbacks to this approach?
A projectile is fired at v0 = 407.0 m/s at an angle of ? = 72.0o with respect to the horizontal. How far will the projectile travel in the horizontal direction
which of the following are true about vector components for vectors in two dimensions. choose all that apply they are
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. Hint: Use the linear relationship P = A + BT, where A and B ..
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. How much energy is stored in the flywheel
An electron with kinetic energy 1.52 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 22.0 cm, Find the frequency of circling
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