Answer:
The escalator does more work and the elevator has a greater power output.
Explanation:
The escalator does more work on the person because it is carrying them up. It also gives the person a chance to walk up the escalator making it a little more challenging than using just an elevator. The elevator has a greater power output because it can transport a person from one floor to another in just 10 seconds where as the escalator can do it in 15.
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Answer:
the sides of the wedge are inclined.
Explanation:
The wedge is a triangular simple machine with a blunt face and two inclined faces. The distribution of forces in a wedge is because the sides of the wedge are inclined.
Answer:Gibb's free energy
Explanation:
The Free energy change describes the amount of energy that is available in any system to do work. It is often designated with the symbol G
Answer:
874.2 KJ
Explanation:
Ethyl alcohol boiling point = 78oC, freezing point = -114oC heat of vaporization = 879 kJ/kg heat of fusion = 109kJ/Kg specific heat capacity (c) of ethyl alcohol = 2,43KJ/Kg.k
calculating each heat drawn singly
Quantity loss due vaporization = m × Lv where m is mass in kg and Lv is the heat of vaporization
Quantity of heat loss due to fusion = m × Lf ( heat of fusion)
Quantity of heat loss due to cooling from 78oc to -114 = m × c × ΔT 9 (change in Temperature)
Quantity of heat removed due to vaporization = 0.601 ×879 = 528.279 KJ
Quantity of heat lost due to cooling from 78oc to -114oc = mcΔT= 0.601 × 2.43 × ( 78 - (-114)) = 0.601 ×2.43 × 192 = 280.4 kJ
Quantity of heat lost due to fusion during freezing = 0.601 × 109 = 65.509 KJ
Total heat removed = sum of the each quantity of heat removed from the gaseous ethyl alcohol = 528.279 + 280.4 + 65.509 = 874.2 KJ
Answer:
The total net force is 17N in total.
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