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Closed Systems: A 12 cm diameter piston-cylinder device contains air at a pressure of 100 kPa at 24oC. The piston is initially 20 cm from the base of the cylinder. The gas is now compressed and 0.1 kJ of boundary work is added to the gas. The temperature of the gas remains constant during this process. How much heat was transferred to/from the gas? What is the final volume and pressure in the cylinder? Find the change in entropy of the gas. Why is this value negative if entropy always increases in actual processes?
Adjacent antinodes of a standing waves on the string are 15.2 cm apart. A particle at an antinode oscillates in simple harmonic motion with amplitude 0.850 cm and period 0.0750 s. The string lies along the x axis and is fixed at x = 0.
Roughly 3.97 % of what you exhale is carbon dioxide. Assume that 22.4 L is the volume of 1 mole (6.02·1023 molecules) of carbon dioxide and that you exhale 0.539 L per breath. how many kilograms of carbon dioxide do you exhale in a year
A position vector in the first quadrant has an x component of 8 m and a magnitude of 10 m. What is the value of its y component?
In a certain time period a coil of wire is rotated from one orientation to another by respect to a uniform 0.38-T magnetic field. The emf ε induced in the coil is 5.9 V. Other things being equal, what would the induced emf be if the field had a magn..
A satellite moves in a circular orbit around the Earth at aspeed of 4260 m/s. Determine the satellite's altitude above thesurface of the Earth
Assume that a person can jump straight up a distance of 61 cm on the surface of the earth. How small would a planet have to be so that the person could jump totally off (i.e. jump up and not come down)? Suppose that Earth's radius is 6380 km and that..
Find the drift velocity of conduction electrons in a gold wire of diameter 1.03 mm when a current of 0.221 A flows in it. The density of conduction electrons in gold is 5.90 X 10^28 m-3
A second force F2 is added to F1 . The resultant of the two vectors has a magnitude of 370 newtons and points along the (a) east/ (b) west line. Find the magnitude and direction of F2.
Find the energy (in joules) of the photon that is emitted when the electron in a hydrogen atom undergoes a transition from the n = 5
question if the original electric field is 2.9010-4nc and the distance is reduced to one-half the original distance
question x-rays are scattered from a target at an angle of 15.2deg with the direction of the incident beam. find the
Two students together exert a force of 825 N in pushing a car 35 m. How much work do they do on the car?
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