Sublimation is when a solid becomes a gas. And gas to solid is deposition.
Answer:
Protons, Electrons, and neutrons
Please remember to post in the right category next time :)
.40 as a fraction is 4/10 or 2/5
the 4 is in the tenths place, so put it over a 10 to make it a fraction.
then, simplify the fraction by dividing the numerator and denominator by 2, and you get 2/5
The Kinetic energy of an object is given by:

Where m is the mass of the object (kg) and v is the velocity of the object (ms-1)
Substituting in:

Therefore the Kinetic energy of the object is
1.35MJ
I think it`s D but iam not so sure