The heat taken to do the 10,000 J of work is 4081 J
<u>Explanation:</u>
The ratio of the temperature difference between the reservoirs and the temperature of the hot reservoir is termed as maximum thermal efficiency.
Maximum thermal efficiency is
1 - (Tc / Th).
where Tc represents the absolute temperature of the cold reservoir
Th represents the absolute temperature of the hot reservoir.
1 - (293/495) = 0.408
If the input is 10,000 J, then 4081 J is used to do work. The remaining 5919 J is rejected as heat into the air.
Answer:
As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts
Explanation:
C) because a new substance is formed
B) not sure but might be because the chemical properties of the substance has changed
If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.
The scientist who used a prism to study light was Isaac Newton
