Common static electricity involves charges ranging from nanocoulombs to microcoulombs. how many electrons are needed to form a charge of -2.00 nc?

To solve this problem we will use the ratio given by the amount of total charge (q) equivalent to the individual charge of each electron (e) multiplied by the total number of electrons (n) present, that is,

Here

q = Total charge

e = Electron charge

Our value of the charge is

We know that the charge in a electron is

Replacing we have then

Therefore the number of electrons needed to form a charge of -2nC is

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.