What law describes the force between two stationary electrically charged objects?

Q-1; What law describes the force between two stationary electrically charged objects?

1) Ampere's law
2) Coulomb's law
3) Kirchoff's Rules (pron: kir-koff rules)
4) Ohm's law
ANSWER: 2 -- COULOMB'S LAW

Q-2; A circuit has a resistance of 200 ohms. The resistance of the circuit can be reduced to 120 ohms by adding which of the following to the circuit.

1) 80 ohm resistor in series
2) 150 ohm resistor in parallel
3) 240 ohm resistor in series
4) 300 ohm resistor in parallel
ANSWER: 4 -- 300 OHM RESISTOR IN PARALLEL

Q-3;  A spring with a force constant k is cut into thirds. The force constant of each of the new springs is

1) k
2) 3k
3) (1/3)k (read: one third k)
4) 9k
ANSWER: 2 -- 3k

Q-4;  When a 2 kilogram mass is suspended from a spring, the spring stretches 4 cm. The force constant of the spring is approximately:+

1) .5 newtons per meter
2) 5 newtons per meter
3) 50 newtons per meter
4) 500 newtons per meter
ANSWER: 4 -- 500 NEWTONS PER METER

Q-5;  If a three farad capacitor and a six farad capacitor are connected in parallel, what is their equivalent capacitance?

ANSWER: 9 FARADS