Answer:
d. The length of the string is equal to one-half of a wavelength.
Explanation:
For a standing waves vibrating with Fundamental Frequency will be vibrate in one loop so Length 2 L = λ ⇒ L = 1/2 λ
Answer: Acceleration is directly proportional to force.
Explanation: According to Newton's Second Law of Motion the amount of Force is equal to the product of mass and acceleration or F = ma. If we derive this formula for acceleration it will become a = F / m.
The relationship between acceleration and force is directly proportional which means that greater force will result to greater acceleration as along mass remains constant.
Runners complete 20m continuous runs, going from one cone to another. they must get to one cone from another until a beep comes. each time, the time between the beeps decrease.
the multistage fitness test is mostly to measure the power of aerobic.
The law of conservation of energy states that the energy cannot be created or destroyed, either it is transferred from one object to another.
Explanation:
The principle of conservation of energy is the energy is not created or destroyed it is only moved from one place to another.
There are various examples to explain the conservation of energy. some of them are explained here.
- If the moving car hits the parking car and that makes the parked car to move, at this state the energy is transferred from the moving car to the parked car.
- If you are pushing a book across the table, then the energy from your moving arm is transferred from your body to the book and that causes book to move.
- The another example for conservation of energy is A dog is running towards the tree and it gets hit to it. In this case the energy is transferred from moving dog to the tree, and causes the tree to move.
