Find heat input into engine for mj removed from refrigerated
A heat-engine of 32% thermal efficiency is used to drive a refrigerator having coefficient of performance of 5. Determine the heat input into the engine for each MJ removed from the refrigerated space by the refrigerator.
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A parallel plate capacitor has a capacitance of 7uF when filled with a dialectric. The area of each plate is 1.5 square meters and the separtion between the plates is 1X10^-5m. What is the dielectric constant?
Assuming a normal population distribution with a mean of 125 and a standard deviation of 25, what is the probability of obtaining the following means for groups of subjects chosen by random sampling?
A sample of 27 of 172 funded projects revealed that 11 were valued at $17,300 each and 16 were valued at $20,220 each. From the sample data, estimate the total value of the funding for all the projects
A sample natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.20L of the mixture? Assume ideal gas behavior.
The weight of the block on the table is 454 N and that of the hanging block is 205 N. Ignore all frictional effects, and assuming the pulley to be massless. (a) Find the acceleration of the two blocks.
In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat solution of the salt. I calculated that the calorimeter constant for the water we had was 883.194 Joules.
A 290 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal.
Aniline (C6H5NH2, Kb = 4.3 x 10^-10) is a weak base used in the manufacture of dyes. Calculate the value of Kn for neautralization of aniline by vitamin C (ascorbic acid, C6H8O6, Ka = 8.0 x 10^-5). Does much aniline remain at equilibrium?
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