Heat always flows from higher temperature to lower temperature. So option A. heat will flow from the air into the coolant is the correct answer.
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2 answers:
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Answer:
0.021
Explanation:
The period of a pendulum is dependent on the length of the string holding the pendulum, L, and acceleration due to gravity, g. It is given mathematically as:
Let us make L the subject of the formula:
We are not told that the length of the string changes, hence, we can conclude that it is constant in both locations.
When the period of the pendulum is 2 s and the acceleration due to gravity is 9.8, the length L is:
When the pendulum is moved to a new location, the period becomes 1.99782 s.
We have concluded that length is constant, hence, we can find the new acceleration due to gravity, :
Therefore:
The difference between the new acceleration due to gravity, and the former acceleration due to gravity, g, will be:
=
=
The acceleration due to gravity differs by a value of at the new location.