3x10^4 electrons move from the carpet to your foot. what type of charge do you now have? how much charge in coulombs do you have?

question 7 options:

negative; 4.8 x 10−15 c

positive; 4.8 x 10−15 c

positive; 4.8 x 1015 c

negative; 5.0 x 10−15 c

The correct answers are: negative; 4.8 X 10⁻¹⁵ C

Explanation:

An atom is the smallest particle of a material that retains the properties of that material. Then all materials are made of atoms. Each atom is formed by a nucleus with positive charge around which negative electrons move. At rest, the positive charge of the nucleus is equal to the sum of the negative charges of all the electrons that revolve around it. This means that the charge is neutral.

Static electricity, also called static energy; is the accumulation of an excess of electric charge, both positive and negative charge, in a material.

It is generated when two or more bodies come into contact. So, when static electricity is produced, as electrons have a negative charge, an object will have a positive charge (because it lost electrons) and one will have a negative charge (because it gained electrons).

With the latter in mind, as you walk on the carpet, electrons move from the carpet to their feet, leaving a negative static charge on you.

On the other side, the electrical charge that a body has is measured in coulombs (C). A coulomb is the amount of electric charge that circulates for 1 second through a section of a conductor, whose current intensity is 1 amp. A coulomb equals the charge of 6.25 x 10¹⁸ electrons.

You can apply rule of three as follows: if 6.25 x 10¹⁸ electrons are 1 coulomb, 3*10⁴ electrons how many coulombs are they?

charge=4.8*10⁻¹⁵ C

So, the correct answers are: negative; 4.8 X 10⁻¹⁵ C

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.