D if the blue car started higher it would have more energy but since the red car is lower it is going faster because it’s going down a hill
Answer:
a) The schematic illustrating is attached
b) The heat transfer to the heat engine is 2142.86 kJ, the heat transfer from the heat engine is 1392.86 kJ
c) The heat transfer to the heat engine is 1648.35 kJ, the heat transfer from the heat engine is 898.35 kJ
Explanation:
b) The heat transfer to the engine and the heat transfer from the engine to the air is:

Where
W = 750 kJ
n = 35% = 0.25
Replacing:


c) The efficiency of Carnot engine is:

The heat transfer to the heat engine is:

The heat transfer from the heat engine is:

Answer:
Michael's final velocity is 19.62 m/s.
Explanation:
We can find the final velocity of Michael by using the following kinematic equation:
(1)
Where:
: is the final velocity =?
: is the initial velocity = 1.62 m/s
a: is the acceleration = 1.2 m/s²
t: is the time = 15 s
By entering the above values into equation (1) we have:


Therefore, Michael's final velocity is 19.62 m/s.
I hope it helps you!
Answer:
The sky is blue because of the different gases present in the air.