PHY – Two Identical charges

Two Identical charges, each -8.00 X ?10?^(-5) C, are separated by a distance of 25.0 cm. Find the electric force between them?What’s the electric force exerted on a test charge of 3.86 X ?10?^(-5) C if it is placed in an electric field of magnitude 1.75 X ?10?^4 N/C?Find the resistance of 134 m of No. 20 copper wire at 20° C (p = 1.72 X ?10?^(-6) ? cm, A = 2.07 X ?10?^(-2 ) ?cm?^(2 )).What is the cost to operate a 100 W lamp continuously week when the power utility rate is 20 cents/kWh?A 1000 W microwave, a 40.0 W fluorescent light bulb, and a 550 W computer are plugged into a 120 V parallel circuit.What is the current passing through each appliance?Find the resistance of each appliance.A magnetic field can deflect a beam of electrons, but it cannot work on the electrons to change their speed. Why?Find the magnetic field at 0.500 m from a long wire carrying a current of 7.5 A.An auto mechanic wants to use a solenoid she found on a car starter. If the solenoid is 0.150m in length and has 750 turns of wire, what amount of current is required to produce a magnetic field of 1.50 X ?10?^(-3) T at its center?Write a paragraph to describe how a generator functions to generate power. Use common electromagnetic physics terms, such as induction, coil, and current.Write a paragraph to describe the differences and similarities between a motor and a generator.