Answer:B,C,D
Explanation:
Thermodynamic efficiency is given by
efficiency can be increased by Keeping constant and increasing
Keeping constant and decreasing
by increasing
by decreasing ratio
A device used to measure atmospheric pressure is a barometer.
Answer: I think the answer C
Explanation:
<h3>Question:</h3>
How to find g (acceleration due to gravity)
<h3>Solution:</h3>
We know,
Acceleration due to gravity (g)
where, G = Gravitational constant
M = Mass of the earth
R = Radius of the earth
Putting these values of G, M and R in the above formula, we get
So, the value of acceleration due to gravity is
Hope it helps.
Do comment if you have any query.
Answer:
B is right at first I thought I was wrong
Explanation:
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This tendency to resist changes in a state of motion is inertia.