A house that is losing heat at a rate of 50,000 kJ/h when the outside temperature drops to 4 oC is to be heated by electric resistance heaters. If the house is to be maintained at 25oC at all times, determine the reversible work input for this process and the irreversibility.

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

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

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