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A gas is to be expanded from initial state i to final state f along either path 1 or path 2 on a p-V diagram. Path 1 consists of three steps: an isothermal expansion (work is 39 J in magnitude), an adiabatic expansion (work is 20 J in magnitude), and another isothermal expansion (work is 27 J in magnitude). Path 2 consists of two steps: a pressure reduction at constant volume and an expansion at constant pressure. What is the change in the internal energy of the gas along path 2?
A ceiling fan is turned on and a net torque of 1.6 N·m applied to the blades. What is the angular acceleration of the blades
A rectangular block of ice 12 m on each side and 1.2m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917kg/m3.
Find out vertical and horizontal components
Find the speed an alpha particle requires to come within 2.6 ? 10-14 m of a uranium nucleus
Two violin strings are tuned to the same frequency, 294 Hz. The tension in one string is then decreased by 1.5 %. What will be the beat frequency heard when the two strings are played together.
If the initial temperature of the horseshoe is 600?C, and initial temperature of the water is 40?C, what is the equilibrium temperature of the system? Suppose no heat is exchanged with the surroundings.
An iron wire has a cross-sectional area of 1.14 10-5 m2. Carry out steps (a) through (e) to compute the drift speed of the conduction electrons in the wire, If the wire carries a current of 9.0 A, calculate the drift speed of conduction electrons
An asteroid, who's mass is 7.8 × 10-4 times the mass of Earth, revolves in the circular orbit around the Sun at a distance that is 2.5 times the Earth's distance from the Sun.
When you bend your knee, the quadriceps muscle is stretched. What size force does the femur exerts on the kneecap if the tendons are oriented as in the figure and the tension in each tendon is 60 {\rm N}
A 18.0 kg block is being pushed up a ramp by a force FP = 150 N acting horizontally. Determine the work done on the block by the frictional force
A particle ( m = 1 kg ) moves on the x axis. The initial position isx= 0 and the initial velocity isv(0) = 5m/s. Determine the final velocity of the particle
. Once the crate has started to move, expalin how large must F be in order to keep the crate moving at a constant speed?
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