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one mole of an ideal gas at 1 atm and 0 C is compressed isothermally from 50 L to 20 L. During the process, energy is transferred out of the gas. What is the change of internal energy for this gas?
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops?
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J / (kg • C°).
A ball is thrown straight up from a height of 1.56m above the ground and reaches a maximum height of 8.35m before falling to the ground. What the calls total time in the air
Intense white light is incident on a diffraction grating that has 720 lines/mm. What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first order spectrum produced by the grating
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
In a series RLC ac circuit, the resistance is 8.7 ohms, the inductance is 21.9 mH, and the capacitance is 14.5 microF. Calculate the maximum current in the circuit
A radio station is allowed to broadcast at an average power not to exceed 26 kW. estimate how many kilometers away you might be able to hear this station
A 73.0 kg base runner begins his slide into second base when he is moving at a speed of 4.4 m/s. How much mechanical energy is lost due to friction acting on the runner
q1. a 1.00-kg teflon disk is slid down a 5.00-m steel plate that is mounted at a 30 degree angle with respect to
Speedboat A negotiates a curve whose radius is 152 m. Speedboat B negotiates a curve whose radius is 204 m. Each boat experiences the same centripetal acceleration. Illustrate what is the ratio vA/vB of the speeds of the boats?
Considered an elastic collision in one dimension in which one of the objects is initially at rest. Notice that mass 2 is the one that is initially at rest. find the final velocity of the bigger object
q1. two packages at ups start sliding down a ramp 40 degrees from the horizontal package a is sliding down in front of
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