Answer:
The length is and the angle is
Explanation:
The period of the pendulum is related to its length by
where is the acceleration due to gravity.
Solving for we get
putting in and we get:
There are two forces acting on the pendulum: The gravitational force and the student's force. Therefore, the angular displacement that these forces give is
putting in , , and we get
The medium through which sound travels inside a bird’s body is the air. This is further explained below.
<h3>What is Air?</h3>
Generally, Air is simply defined as the invisible combination of gases, and this gas exists around the Earth.
In conclusion, Sound wave allows birds to communicate.
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Input energy is: 200 joule
Output energy is: 100 joule
100/200*100=%50 efficiency
Coulomb's law states<span> that: The magnitude of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distance between them.
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Answer:
the action of measuring something.
Measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind. The value obtained on measuring a quantity is called its magnitude. Magnitude of a quantity is expressed as numbers in its units.