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An air-standard Diesel cycle has a compression ratio of 18.2. Air is at 27 ºC and100 kPa at the beginning of the compression process and at 1700 K at the end of theheat addition process. Using constant specific heats at room temperature, determine (a)the cutoff ratio, (b) the heat rejection per unit mass, and (c) the thermal efficiency.
We compared two cases: single phase delivery (call the wasted power P1), and 2-phase delivery (P2), Find the ratio P1/P2 when load 1 = 3.1 A, load 2 = 7.4 A, and each delivery wire has a resistance of 0.25 ohm
Three carts of masses m1 = 4.50 kg, m2 = 12.00 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of v1 = 4.50 m/s to the right, v2 = 3.00 m/s to the right, Find the final velocity of the train of three carts
An inflatable raft (unoccupied) floats down a river at an approximately constant speed of 3.7 m/s. what must be the horizontal distance between the raft and the bridge
Two people are holding up the ends of a 4.75-kg wooden board that is l = 2.00 m long. A m = 3.00-kg box sits on the board, 0.50 m from one end. What forces do the two people exert.
A beam of polarized light of intensity26.0 W/m2 passes during a polarizing sheet. What is the electric field amplitude of the transmitted beam?
sand is dumped onto a conveyor belt at the rate of 25 kg per second. what force is needed to keep the belt running at a
Two objects begin at different corners of an equilateral triangle with sides of length 32 m and race towards the third corner. how long after the first object begins should the second object start so that they meet at the final corner at the same tim..
A middle-aged man starts to wear eye glasses with lenses of1.5 D that allow him to read a book held as close as25 {\rm cm}. Several years later, hefinds that he must hold a book no closer than 33 cm to read it clearly with the same glasses, so he..
A major-league catcher gloves a 85 mi/h pitch and brings it to rest in 0.17m. If the force exerted by the catcher is 803 N, what is the mass of the ball.
A swing ride at a carnival consists of chairs that are swung in a circle by 12.0 meter cables attached to a vertical rotating pole. Find the tension in cable attached to the chair
calculate and compare the energy released by (a) fusion of 1 kg of hydrogen deep within the sun and (b) the fisision of 1 kg U235 in a fission reactor
Consider a damped oscillator with m=0.2 kg, b= 4 N-m^-1 sec and k= 80N/m. Suppose that this oscillator is driven by a force F=Fo cos wt, What is the mean power input
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