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One liter of helium at STP is heated at constant volume to 100 C. It is then allowed to mix in an insulated container with one liter of methane which is initially at STP, the final volume being two liters. The methane molecule has three rotational degrees of freedom. What is the final temperature? What is the increase in entropy? Compare your result with the entropy change that would occur if the gases were allowed to come into thermal equilibrium with each other, but not to mix.
A cylnder holds .5 moles of an ideal gas at temp 334K. The gas expands isothermally from an initail volume of .03 m^3 to a final volume of .4m^3
A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 1.5 cm away, in a time 5.9 x 10-8 s. (a..
block of wood floats in fresh water with 0.651 of its volume V submerged and in oil with 0.890 V submerged. Find the density of the wood and the oil
A forensic scientist is using a standard biological microscope with a 1x objective and a 5x eyepiece to examine a hair from a crime scene. How far from the objective is the hair? Assume that the length of the tube of a standard biological microscope ..
A small object with a mass of one gram carries a charge of 1µC and is suspended by a thread between the vertical plates of a parallel-plate capacitor submitted to a voltage of 1 kilo volts
The eight ball m = 0.5 kg is initially moving with a velocity v = 4.2i m/s. What is the magnitude of the velocity of the eight ball after the collision in m/s
Suppose a planet is discovered that has the same amount of mass in a given volume as the Earth, but has radius 1/5 . Calculate the acceleration due to gravity on this planet
Find an expression for acceleration a of a stationary observer in Schwarzschildspacetime and show that generally it does not vanish (as it would for a stationaryobserver in Newtonian gravitation).
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of3.0N starting from rest. What is the speed of the sack after Sam has pushed it a distance of10cm
A step-down transformer produces a voltage of 6.0V across the secondary coil when the voltage across the primary coil is 140V, What voltage appears across the primary coil of this transformer
A line of charge with uniform density of 32.0 nC/m lies along the line y = -15.0 cm, Find the electric field it creates at the origin
At a certain distance from the center of the Earth, a 4.5- object has a weight of 4.0 , by what factor does its weight change
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