Scientists believe the moon’s core might be formed of iron.
Answer:
40.25 V
Explanation:
Parameters given:
Initial magnetic field, B1 = 0.65 T
Final magnetic field, B2 = 0 T
Number of turns, N = 73
Radius of loop, r = 18 cm = 0.18 m
Time taken, Δt = 0.12 s
The magnitude of the EMF induced in a loop of wire due to a changing magnetic field is given as:
V = | [-N * A * (B2 - B1)] / Δt |
Where A = area of loop
Area of loop = πr²
Therefore, the magnitude of the EMF induced will be:
V = | [-N * πr² * (B2 - B1)] / Δt |
V = | [-73 * π * 0.18² * (0 - 0.65)] / 0.12 |
V = |40.25| V
V = 40.25 V
This is the magnitude of the EMF induced in the loop of wire.
Answer:
Hello! :)
Explanation:
A base quantity (or basic quantity) is chosen and arbitrarily defined, rather than being derived from a combination of other physical quantities. The 7 base quantities are: SI units are used as standardised units in all measurements in the world. SI is the short form for “International System of Units”
Hope This Helps!!!
Answer:
Speed, v = 5 m/s
Explanation:
We have,
The length of the football field, l = 100 m
A person takes 20 seconds to run its length.
It is required to find the speed of the person with which he should run. The distance covered divided by time taken is called its velocity.
So, the speed of the person is 5 m/s.