Which is an example of gaining a static charge by conduction?
A)
Rubbing a balloon against your hair.
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Shuffling your shoes across a carpet.
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Bringing a charged rod near an electroscope.
Touching your car on a cold day and getting a shock.

Which of the following is not am example of a polymer? protein nylon kevlar concreta

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v