What would happen if an electron was added to an atom?

Question 2 options:

It would become a different atom.

Its charge would increase by 1

It would add to the mass by 1.

The charge would be reduced by 1.

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton