Electricity and Magnetism Answers

Two charges
Q1=500μC
and
Q2=100μC
are located on the XY plane at the positions
r1=3j⃗
m and
r2=4i⃗
m . Find the force exerted on the
Q

The magnetic flux through each loop of a 35-loop coil is given by (36t−071t3)10−2Tm2, where the time is in seconds. Determine the induced emf at t=5.0s.
6.17V
14.43V
17.49V
9.17V

if we have a sphere of radius "r" and we construct guassian surface af radius "a" around it. what will be the potential"V" and work done/energy at any point say "b" between the region where b>r and b<a? and how we do this?

Calculate the electric field everywhere outside of a very long rod, radius R and charged to a uniform linear charge density .

The average velocity of the electrons in a piece of wire of cross-sectional area
2.0×10−6m2
is
2.5×10−4m/s
when a steady current of 4.0 A is flowing. Calculate the number of free electrons per unit volume of the material

Calculate the potential difference between the plates of a parallel plate capacitor so that the gravitational force on a proton would be balanced by the electric field (proton mass =
1.67×10−27kg
, electronic charge
e=1.6×10−19C
, plate separation is 0.5cm. Take
g=9.8m/s2)

why photons do not shock us as it have electric component?

A charged particle is fired into a cubical region of space where there is a uniform magnetic field. Outside this region, there is no magnetic field. Is it possible that the particle will remain inside the cubical region? Explain.make it simple answer for short answer question type.

2. Matt forgot to put the fabric softener in the wash. As his socks tumbled in the dryer, they became charged. If a small piece of lint with a charge of +1.25 E -19 C is attracted to the socks by a force of 3.0 E -9 N, what is the magnitude of the electric field at this location? could someone walk me through this question.

A clothes dryer has a power rating of 4500w. How long did it take to dry a load of laundry if electric power costs $0.09 and the cost of using the dryer was $0.63?