Answer:

Explanation:
Frequency is mathematically defined as the quotient of speed divided by wavelength.
where
v-is the speed of light
-w is wavelength.
Given the speed of the wave as
and the wavelength
, we substitute these values in the Frequency function to solve for frequency:

Hence, the wave's frequency is 
Yes you would be doing more work
Given:
I=8A
t=2second
Potential difference,V=120-100=20volt
Workdone=V×i×t
=20×8×2
=320 joule.
Answer:
Newtons
Explanation:
Magnitude of charge on the electron = q =
Coulombs
The negative sign in the question statement indicates that the charge is negative.
Magnitude of Electric Field experienced by the electron = E =
Newtons/Coulomb
Magnitude of Force on the electron = F = ?
The relation between the charge, electric field and the force on the charge because of electric field is given by:

From here we can write:
F = qE
Using the values, we get:

Thus, the magnitude of the electric force experience by the electron would be
Newtons
B is the answer...
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