An air-standard carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 k. the pressures before and after the isothermal compression are 150 and 300 kpa, respectively. if the net work output per cycle is *

Pmax = 30MPa

The heat input required Qin = 0.706KJ

The mass of air m = 0.00296kg

Explanation:

The step by step solution to this problem can be found in the attachment below.

A Carnot cycle with specified temperature limits is considered. The maximum pressure in the cycle, the heat transfer to the working fluid, and the mass of the working fluid are to be determined. Assumptions

Air is an ideal gas with variable specific heats.

Analysis

(a) In a Carnot cycle, the maximum pressure occurs at the beginning of the expansion process, which is state 1.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards