How much energy would be needed for a 100kg body to escape from the earth?radius of earh=6400 km

Energy = 6400000 Joules

Explanation:

Given the following data;

Mass = 100kg

Radius of earth = 6400 km

To find the amount of energy required by the object to escape the velocity of the earth, we would apply the Law of Conservation of Energy.

This law states that energy cannot be destroyed but can only be converted or transformed from one form to another. Therefore, the sum of the initial kinetic energy and potential energy is equal to the sum of the final kinetic energy and potential energy.

Mathematically, it is given by the formula;

Ki + Ui = Kf + Uf .......equation 1

Where;

Ki and Kf are the initial and final kinetic energy respectively.

Ui and Uf are the initial and final potential energy respectively.

At the earth surface, potential energy with respect to the radius of the earth is given by the formula;

......equation 2.

Also, at the earth surface, kinetic energy is given by the formula;

.......equation 3.

After escaping the earth, the object wouldn't have both kinetic and potential energy; Kf = Uf = 0

Substituting eqn 2 & 3 into eqn 1, we have;

Making "V" the subject of formula;

Therefore, energy = gmR

Energy = 10 * 100 * 6400

Energy = 6400000 Joules

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like . (i crazy)

most famous scientist who contributed to this physics are:

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40