In a circuit, two identical resistances are connected, first in series and then in parallel. the circuit will draw greater current in the first case.

true or false?

False

Explanation:

The current flowing through a circuit can be computed by using Ohm's law:

where

V is the voltage of the battery

Req is the total resistance of the circuit

Let's now compare the two situations. Let's call R the resistance of each resistor (since they are identical, they have same resistance, R)

- Series configuration: in this case, the total resistance of the circuit is given by

So the current through the circuit is

(1)

- Parallel configuration: in this case, the total resistance of the circuit is given by

So the current through the circuit is

(2)

By comparing (1) and (2), we see that the current in the parallel configuration is greater than in the series configuration:

therefore, the correct answer is false.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y