Two balloons are charged with an identical quantity and type of charge: -4 nc they are held apart at a separation distance of 70 cm. determine the magnitude of the electrical force of repulsion between them.

29.4 uN

Explanation:

The electric force between two charges can be calculated using Coulomb's Law. According to this law the force between two point charges is given as:

where k is a proportionality constant known as the Coulomb's law constant. Its value is Nm²/C²

r = distance between charges = 70 cm = 0.7 m

q1 = q2 = 4nC = C

The negative sign indicates that the charges are negative. In the formula we will only use the magnitude of the charges.

Using these values in the formula, we get:

Therefore, the magnitude of repulsive force between the given charges will be 29.4 uN

the answer is a 3.8cm

explanation:

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.