What is the significance of einstein's famous equation e = mc2?
energy is not related to mass.
mass can be destroyed.
energy can be destroyed.
mass and energy can convert to one another.

Energy and Mass are interchangeable. That means the energy and mass are convert to one another.

Einstein submitted a special theory that develops a nuclear power, where  the energy become a mass and mass become an energy.

E = mc²      OR   E/c² = m

Where

E stands for energy, (Joules)

m stands for Mass (Kg) and

c stands for speed of light (m/s)

where speed of light is constant, therefore E and m are mutually convertible

Also we find that the units on both sides of the equation are balanced

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s