No, transparent object let all the light through.
Steps:
1)Data:
q1=charge of first balloon=1.2 × 10^-6
q2=charge of second balloon=1.2 × 10^-6
Condition:q1=q2
then for convenience,we say q instead of q1 and q2.
Radius=r=5*10^-1
Radius is the distance between balloons!
Magnitude of repulsive force=F=?
2)Solution:
F=kq1q2/r^2
As q1=q2=q
So
F=kqq/r^2
=kq^2/r^2
Putting values:
F=((9*10^9)(1.2 × 10^-6)^2)/(5*10^-1)^2
Using calculator:
F=0.05184 N
Answer:
<u>The girl should leave the string a time when the ball is at a position tangent at that point of the circle passes through the location of target.</u>
Explanation:
The direction of an object moving in circular path changes endlessly with time. The direction of the object at some extent are within the direction of tangential drawn to the circle at that point,
The centripetal force on the ball becomes zero once the girl leaves the string. hence, the ball can go into the direction tangential to the circle at the point whenever she left the string.
By just smiling. It normally makes you look more happy.And if your happy that's positive body languge
Normal force, weight, Kinetic friction, and air resistance are a few I think of the top of my head.
I hope this helps
