Answer:
The heat absorbed in each cycle is 9,234.286 J
Explanation:
Given;
power output, P = 5 kW = 5,000 W
efficiency of the engine, e = 30 % = 0.3
thermal heat expelled, = 6464 J
let the heat absorbed =
The efficiency of the engine is given as;
Therefore, the heat absorbed in each cycle is 9,234.286 J.
Answer: B chemical
Explanation: it will make a chemical reaction
Answer:
the angle of incident is 40°
Explanation:
NQ is the normal to the mirror, therefore
angle NQA =90°
PQA = 50°
incident angle = NQA - PQA
90°- 50° = 40°
note that the angle of reflection is equal to the angle of incident
The last one is correct (D)
it is C....................