<span>the overload principle hope this helps
</span>
Answer:
The third choice: 
Explanation:
The cork is positively charged, therefore we know tat there must be excess of positively charged protons present.
The charge 
of a proton is
;
therefore, the number 
that makes up a charge of 
is
which is the 3rd choice.
Answer:
(a) 67.44 second
(b) 529.5 revolutions
Explanation:
ωo = 49.3 rad/s
α = 0.731 rad/s^2
(a) Let it takes t time to come to rest.
ω = 0
Use first equation of motion for rotational motion
ω = ωo + α t
0 = 49.3 - 0.731 x t
t = 67.44 second
(b) Let it turns an angle θ rad before coming to rest. use third equation of motion for rotational motion.
ω^2 = ωo^2 + 2 α θ
0 = 49.3 x 49.3 - 2 x 0.731 x θ
2430.49 = 1.462 θ
θ = 1662.44 rad
Number of revolutions = θ / 2π = 1662.44 / 3.14 = 529.5 revolutions
A greater weight so the object has greater weight
