One or more neutrons in the nucleus add mass to the atom.
2 should be placed in the blank to make the equation balance. Btw, that's chemistry and not physics. Get it right.
It is beacuse of fluid If there is no fluid, there is no drag. Drag is generated by the difference in velocity between the solid object and the fluid. If this statement is correct then how can there be drag in space if there is no air?
Answer:
Option B is the correct answer.
Explanation:
Period of simple pendulum is given by the expression 
, where l is the length of pendulum and g is the acceleration due to gravity value.
So if we have a simple pendulum with length l we can find its period. Using the above formula we can calculate acceleration due to gravity value of that place.
So using simple pendulum we can measure acceleration due to gravity value.
Option B is the correct answer.
Answer:
it opens the circuit so that electric charges do not flow to the timier
Explanation: a closed circut will allow electrisity to flow through.
