A. Radioactive decay does not result in heat. Gravity also does not result in heat. In the Earth's mantle, it is highly unlikely that the radiation from the sun would reach that deep into the earth.
Answer:
Three different types of levers exist, depending on where the input force, fulcrum, and load are. A class 1 lever has the fulcrum between the input force and load. A class 2 lever has the load between the fulcrum and input force. A class 3 lever is a lever that has the input force in between the fulcrum and the load.
Explanation:
Answer:
The thermal efficiency is 43%.
The total amount of energy developed by work is 397 kW in one year.
Explanation:
Given that,
Power output = 0.3 kW
Heat energy = 2400 Btu/h = 0.703 kW
We need to calculate the thermal efficiency
Using formula of efficiency

Put the value into the formula



The thermal efficiency is 43%.
(b). We need to calculate the total amount of energy
Using formula of energy



Hence, The thermal efficiency is 43%.
The total amount of energy developed by work is 397 kW in one year.
Using the equasion F=ma F=2*2 F= 4N 4 Newtons or kg * m over s^2, the answer would be 12 m/s^2.
Answer:

Explanation:
As we know that the speed of sound in air is given as

now the rate of strike is 1 stroke per second
so distance is given as

now we will have


so the distance is given as
