The Hubble Space Telescope is a telescope that NASA launched into space in 1990. Scientists most likely prefer to use the Hubble Space Telescope instead of a land-based telescope because it provides better accuracy at

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."

it's c (engineer's do their work with mechanical stuff not on any living being)

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.