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A 20 cubic feet insulated vessel of oxygen at a temperature of 180 psia is stirred by internal paddles until then pressure becomes 300 psia. Determine (a) the change of internal energy, (b) the input work, (c) the heat, and (d) the change of entropy of 1 lb of oxygen.
Suppose that by stirring 921 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy
Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio, what is the intensity of the music arriving at the cliff
A spherical water drop, 1.70 meter in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 502 N/C. Determine how many excess electrons does the drop have
A 0.36 kilogram ball moving in the +x direction at 17.8 meter per second is hit by a bat. Determine the average force exerted on ball by bat
This fine establishment features a 200- kg mechanical bucking bull that has a mechanism that makes it move vertically in simple harmonic motion. Whether the “bull” has a rider or not, it moves with the same amplitude 2.79 m and frequency 0.389 Hz.
A 5 kg mass is connected to a spring (1000 N/m) platform which undergoes simple harmonic motion in the vertical direction with two complete oscillations each second. What is the speed of the box at the equilibrium position
How would you calculatethe magnitude of the electric force of an electron at a distance of4.5 x10-10 m from a nucleus? (Ialready have the magnitude of a proton's electric field as6.40e+11 N/C , given that the proton has a charge of 1.44E-17C.)
As an NMR spectroscopist, do you prefer larger or smaller values for the duration of the 90° pulse for the target nucleus/channel (e.g. for 1H)? Justify.
In1960 a Tampa, Florida, mother reportedly raised one end of a carthat had fallen onto her son when jack failed. how much work did her force do on the car
Suppose a simple pendulum consists of a small weight (called apendulum bob) suspended from a 0.52-m-long string. If the pendulum bob were displaced to one side by a small angle and thenreleased,
four long straight wires are perpendicular to the page and their cross sections form a square of edge length a 6.65
A 15.0 g coin slides downward at a constant velocity on a surface that is inclined. The coefficient of kinetic friction between the coin and the surface is 0.29. Find the angle that the inclined makes with the horizontal
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