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Air that initially occupies 0.16 m3 at a gauge pressure of 100 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at fix pressure until it reaches its initial volume. Estimate the work done by the air. (Gauge pressure is the difference between the atmospheric pressure and actual pressure).
When an automobile moves with constant speed down a highway, mostof the power developed by the engine is used to compensate for themechanical energy loss due to frictional forces exerted on the carby the air and the road.
A 4 kg model rocket is launched, expelling 40.00 g of burned fuel from its exhaust at a speed of 550m/s. What is the velocity of the rocket after fuel has burned? Hint: Ignore the external forces of gravity and air resistance.
If a 12 V battery is used to charge this capacitor, what is the total charge stored what is the magnitude of the electric field between the plates what is the energy stored on the capacitor
A point charge +q of mass m, (m,+q) is placed at point P along the x-axis where V_r(infinity) is known. Find the expression for the new velocity at the second point
q1. a crate of 30.2- tools rests on a horizontal floor. you exert a regularly increasing horizontal push on it and
a harvest mouse can detect sounds as quiet as -10 . suppose you are sitting in a field on a very quiet day while a
A plane polarized EM wave propagates through a polymer. Such waves obey a similar wave equation to that found for free space. The wave has a magnetic field vector, ??=[(?1.2??)?sin(??y+??t)] ?T, with frequency ??=7.61×10^(14) Hz and wave number ??..
A cylinder of gas at room temperature (20 degree C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 2.2p1?
My professor today stated that if a ball was to fall a certain height, then the work done by gravity on the ball would equal the work done by the ball's equal and opposite gravitational pull. By W=F*d, this means that the earth must travel the ..
Each of the three helicopter rotor blades is 5.20 mlong and has a mass of 280 kg. What is the kinetic energy of rotation
An arrow is shot vertically upward and then 1.99 s later passes the top of a tree 38.9 m high. How much longer will the arrow travel upward
A 2130 satellite used in a cellular telephone network is in a circular orbit at a height of 800above the surface of the earth. What fraction is this force of the satellite's weight at the surface of the earth
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