Answer:
The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there
The work done by the heat engine is 40 kCal.
The given parameters;
- input heat of the engine, Q₁ = 70 kCal
- output heat of the engine, Q₂ = 30 kCal
To find:
- the work done by the heat engine
The work done by the heat engine is the change in the heat energy of the engine;
W = Q₂ - Q₁
Substitute the given parameters and solve work done (W)
W = 70 kCal - 30 kal
W = 40 kCal
Thus, the work done by the heat engine is 40 kCal.
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Answer:
Explanation:
From the question we are told that:
Length 
Width 
Velocity of Car A 
Velocity of Car B 
Distance traveled by car A before car B moves
Therefore total distance traveled at same time interval
Where
Total distance=Perimeter of rectangle
Therefore
Generally the equation for time taken to meet is mathematically given by
Where
Relative speed = Speed of car A +Speed of car B
Therefore the time taken to meet
Answer:
what do you need help with? Like which type of print each image is?
Explanation:
On the change in potential energy
