Electric Potential Energy. Mass and Energy II

What's the formula to get Mechanical Potential Energy (U)

Why is the electric force considered as a conservative force?

• There's not heat loss

• Because work just depends on the initial and final position

• Because the answer is on your ❤

• In the system just exists energy

When the value of the work is positive, the electric potential energy is:

• equal

• negative

• positive

• null

When the value of the work is negative, the electric potential energy is:

• equal

• negative

• positive

• null

Talking about charges. How the work is calculated?

How the electric potential energy is calculated?

The nano prefix (η) means you have to multiply the base 10 with a power of:

• - 6

• 6

• 9

• - 9

The centi prefix (c) means you have to multiply the base 10 with a power of:

• - 2

• - 3

• • - 6

• - 9

To have an Electric Potential Energy situation is necessary to have the next conditions:

• A particle within an E receiving an electrostatic force

• Two charges working at a given distance

• A charge affected by an E

• Forgotten prefixes to develop exercises and getting ZERO

Find the potential energy of a system of a charge of +7 μC found at 0.06m of another charge of 20 μC?

• 350 J

• 21 J