Answer:
94.05 mV
Step-by-step explanation:
N = Number of turns = 149
r = Radius of coil = 2.45 cm = 0.0245 m
t = Time = 0.141 s
Initial magnetic field = 50.9 mT
Final magnetic field = 98.1 mT
A = Area = πr² = π×0.0245²

∴ Magnitude of the average EMF, that is induced in the coil during this time interval is 94.05 mV
Answer:
x = -8
Step-by-step explanation:
Add 12 on both sides
You get 3/4x = -6
Multiply 4/3 on both sides
You get x = -24/3
Simplify and you get -8.
D is the answer, just add al the sides (multiply each by two and add them)