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sergij07 [2.7K]
3 years ago
15

If a negatively-charged rod is brought close to an electroscope that is negatively charged, what will the two leaves of the elec

troscope do?
move closer together
move farther apart
not move at all
become positively charged
Physics
1 answer:
postnew [5]3 years ago
5 0

Answer:

Move further apart

Explanation:

The negative charge on the rod repels the electrons on the cap thus they concentrate at the leaves causing an increase in the amount of charge at the leaves. Since like charges repel, the two leaves of the electroscope move further apart.

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How much power does device use that is plugged into an outlet with a voltage difference of 150 V if the current is 15 A? Show me
Alexeev081 [22]

Answer:

Power used = VI

= 150 x 15

= 2250 W

Hope this helps!

5 0
3 years ago
Read 2 more answers
What is the electric force acting between two charges of 0.0072 C and -0.0060 C that are 0.0040 m apart?
telo118 [61]
Answer:
F = -2.4 * 10¹⁰ N

Explanation:
To get the electric force between two charges, we would use Coulomb's law which states that:
F = \frac{k * q1 * q2}{d^{2} }

where:
F is the force between the two charges
k is Coulomb's constant = 9 * 10⁹ Nm²/C²
q1 is the first charge = 0.0072 C
q2 is the second charge = -0.006 C
d is the distance between the two charges = 0.004 m

Substitute with the givens in the above formula to get the force between the two charges as follows:
F = \frac{9*10^9*0.0072*-0.006}{(0.004)^2}

F = -2.4 * 10¹⁰ N

Hope this helps :)
8 0
3 years ago
In a lab, a 5 L sample of gas with a pressure of 6 atm was transferred to a one liter flask.
wolverine [178]

Answer:

30 atm

Explanation:

P1V1 = P2V2

P2 = P1V1/V2

P2 = (6 atm * 5 L) / 1L

P2= 30 atm

6 0
3 years ago
Courtney wants to practice doing science. Which example best illustrates her
dybincka [34]

Answer:

A

Explanation:

because she wants to practice science and A is the practical option.

6 0
4 years ago
What do counties get their power from
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