Answer:505.94 N
Explanation:
Given
mass of child (m)=41 kg
N=60 rpm
Radius(r)=1.25 m
and centripetal acceleration is given by 
(a) 
First of all, we need to calculate the acceleration of the person, by using the following SUVAT equation:
where
v = 0 is the final velocity
u = 20.0 m/s is the initial velocity
a is the acceleration
d = 1.00 cm = 0.01 m is the displacement of the person
Solving for a,
And the average force on the person is given by
with m = 75.0 kg being the mass of the person. Substituting,
where the negative sign means the force is opposite to the direction of motion of the person.
b) 
In this case,
v = 0 is the final velocity
u = 20.0 m/s is the initial velocity
a is the acceleration
d = 15.00 cm = 0.15 m is the displacement of the person with the air bag
So the acceleration is
So the average force on the person is
The answer is False. Permafrost does not thaws briefly in the summer since Permafrost is all year round. As global temperature rise, the amount that frozen soil that melts is increasing. With warmer temperature, snow and ice that used to reflect sunlight is disappearing. Thus, the newly exposed soil absorbs heat from the sunlight, and encourages melting.
Answer:
electrons will migrate untill there is uniform distribution of charge .
and sphere became uniformly charged
Explanation:
as conducting sphere is charged positively it is given . the left side of sphere is charged positively . there is negative charge on the left side that will be attracted by positive charge of right side .
therefore electrons from left side will start migrate towards right side due to attraction of positive charge of right side .
therefore electron will start migrate uniformly .
electrons will migrate untill there is uniform distribution of charge .
and sphere became uniformly charged
