Power is equal to work divided by time
Answer:
A) An organism with favorable genetic variation will tend to survive and breed successfully.
Explanation:
In an ecosystem, organisms that don't have the best genetic variation will die off, leaving the more genetic favored ones to survive and become better as a whole.
Assuming constant acceleration <em>a</em>, the object has undergoes an acceleration of
<em>a</em> = (50 m/s - 100 m/s) / (25 s) = -2 m/s²
Then the net force has a magnitude <em>F</em> such that, by Newton's second law,
<em>F</em> = (75.0 kg) <em>a</em>
<em>F</em> = (75.0 kg) (-2 m/s²)
<em>F</em> = -150 N
meaning the object is acted upon by a net force of 150 N in the direction opposite the initial direction in which the object is moving.
Answer:
- The thermal efficiency is 0.4113.
Explanation:
We know that the thermal efficiency is the ratio of work done by the engine over the heat taken
Now, how much work the engine do in a cycle?
We know that the work done in a cycle must be equal to the heat taken minus the heat rejected
So, the thermal efficiency will be:
Putting the values of the problem
