Answer:
The the maximum emf is 
Explanation:
Given that,
Magnetic field 
Frequency = 60 Hz
Diameter = 7.8 μm
We need to calculate the maximum emf
Using formula of emf

Where, N = number of turns
B= magnetic field
A = area
Put the value in to the formula


Hence, The the maximum emf is 
Honestly, I am quite confused with what Nv stands for because there is no element with that symbol. However, I still get the concept of finding the average molecular mass of an element. Let's just assume that nv stands for a specific type of element and it has two isotopes: nv-293 and nv-295. Isotopes have the same number of protons but differ in mass number (protons+neutrons).
To find the average atomic weight, just multiply the individual weights with the respective composition of the isotope. Since there are only two isotopes, they constitute 50% each. So, the average atomic weight is
(50%)(293.15 amu) + (50%)(<span>295.30 amu) = 294.225 amu
Hence, the atomic weight of nv is 294.225 atomic mass units.</span>
Are there options to choose e
Answer:
2630250 N/C, horizontally left
0

1434.825 N/C, horizontally left
Explanation:
m = Mass of particle
u = Initial velocity = 
v = Final velocity = 0
t = Time taken
s = Displacement = 3.5 cm
q = Charge of particle = 
Force is given by

Acceleration is given by


Magnitude of electric field is 2630250 N/C
Direction is horizontally to the left
The angle counterclockwise from left is zero.


The time taken is 
Acceleration is given by


Magnitude of electric field is 1434.825 N/C
Direction is horizontally to the left