Answer:
2.63 cm
Explanation:
Hooke's law gives that the force F is equal to cy where c is spring constant and x is extension
Making c the subject of the formula then

Since F is gm but taking the given mass to be F

By substitution now considering F to be 3.3 kg

Answer:
Approximately 66,8kg
Hope this help :D
Explanation:
F=mg. So 655N= 9.8 m/s² × mass.
Mass = 655 / 9.8
It is B because when he made the rays go through the atoms, a very small little of it created a repulsion which resulted in him proposing that there is a dense, positive nucleus in the atom while electrons are spinning around.