Does a weave with high-pitched have a very low frequency
2 answers:
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Answer:
New gravitational force, F' = 216 units
Explanation:
Given that,
Gravitational force between object 1 and 2, F = 72 N
The gravitational force between two objects is given by :
............(1)
If the mass of object 1,
If the distance between objects is halved,
Let new gravitational force is F'. It is changed to :
F' = 216 units
So, the new gravitational force will be 216 units.
Answer:
(a) ΔФ = -0.109W
(b) emf = 28.43V
(c) Iin = emf/R
Explanation:
(a) In order to calculate the magnetic flux you use the following formula:
(1)
B: magnitude of the magnetic field = 1.40T
A: area of the rectangular coil = (0.23m)(0.34m)=0.078m^2
Where it has been taken into account that at the beginning the normal vector to the cross sectional area of the coil, and the magnetic field vector are parallel. When the coil is rotated the vectors are perpendicular.
Then, you obtain:
The change in the magnetic flux is -0.109 W
(b) During the rotation of the coil the emf induced is given by:
(2)
N: turns of the coil = 60
ΔФ: change in the magnetic flux = 0.109W
Δt: lapse time of the rotation = 0.230s
You replace the values of the parameters in the equation (2):
The induced emf is 28.43V
(c) The induced current in the coil is given by:
(3)
R: resistance of the coil (it is necessary to have this value)
emf :induced emf = 28.43V