An object of mass 0.5 kg is swung in uniform circular motion. The radius is 2 meters, and the force exerted is 4 N. Calculate the centripetal acceleration.

8 m/s²

Explanation:

m = 0.5kg

r = 2m

F = 4 N

make v the subject

v = √(4×2)/0.5

v = √16

v = 4 m/s

a = 4²/2

a = 16/2

a = 8 m/s²

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.