Science, asked by Anonymous, 1 year ago

What is E =mc2? How can we slow the time by increasing speed


QGP: Hello, you can get a part of your answer by reading this:
QGP: https://brainly.in/question/1235130

Answers

Answered by QGP
6
Hello Friend,

♦ First, about E = mc²

c = Speed of light in vacuum
So, c = 299792458 m/s

This is probably the most famous equation, and it's called The Mass-Energy Equivalence Equation. It was given by Albert Einstein in his 1905 paper published in Annalen der Physik (Annals of Physics)

→ This equation relates mass and energy, and tells us that both are convertible into each other.

→ One way of looking at it is this:
If a mass m converts into energy, then mc² amount of energy is released.


For example, suppose 1 gram mass converts into energy.

Then E ≈ (0.001 kg) × (3×10^8)²
E ≈ 9 × 10^13 joules

This is a tremendous amount of energy, larger than nuclear bombs.



→ The original paper (which was in German) was called:

Ist die Trägheit eines Körpers von seinem Energieinhalt abhängig?

(Does the Inertia of a Body Depend upon its Energy Content?)

The original paper is cited as follows:

• Annalen Der Physik 18:639

(I cannot provide complete link, it's against the rules)


__________________________

Now coming to your second question:

First, we need to understand that time is not absolute.

I urge you to read the following before you proceed: ↓↓

• https://brainly.in/question/1235130

Assuming that you have read it, I proceed:

→ Now, we have a fairly clear idea about how 'Time' is not absolute'. And we know that in any inertial frame, the observer must measure the speed of light to be 299792458 m/s.

→ In the Special Theory of Relativity, Albert Einstein gave the time dilation equation as follows:

(It is also shown in the image attached)

t' = t / [√(1 - v²/c²)]

where
t = Proper Time
t' = Dilated Time / Observed Time
v = Velocity of object

• From the equation, we can see that as velocity v of an object increases, the value of t' increases.

The increase in t' refers to time slowing down.


For example, at 95% the speed of light,

v = 0.95 c
Putting this in the equation, wet get:

t' ≈ 3.2 t

This means that 1 second for a moving observer is approximately 3.2 seconds for a stationary observer.

Thus, time 'slows down' for the moving observer.


Hope it helps.

Purva
@Purvaparmar1405
Brainly.in

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