Answer:
303
Explanation:
We are given that
Emf in coil 1,
Emf induced in coil 2,
Number of loops in coil 1,
We have to find the number of loops in coil 2.
Rat of change of magnetic flux in a single loop is same.
Let and
be the magnetic flux in coil 1 and coil 2.
Using the formula
Hence, the number of loops in coil 2=303
Answer:
Explanation:
The equation for this is
f = μ where f is the frictional force the block needs to overcome, μ is the coefficient of static friction, and
(that means that the normal force is the same as the weight of the block which has an equation of weight = mass times the pull of gravity). Filling in:
1.09 = μ(.413)(9.8) and
μ = so
μ = .27
The answer is: B. Kinetic energy
<h2>Why?</h2>Since the ball is falling, speed increases because the gravity acceleration is acting. When speed increases, the kinetic energy increases too, so the ball is gaining kinetic energy.
The gravity acceleration is equal to , it means that when falling, the ball will increase it's speed 9.81m every second.
We can calculate the kinetic energy by using the following formula:
Where:
Have a nice day!
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