
Hi Pupil Here's your answer ::
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They are always balanced forces since if they are applied on an object the resultant of tgese forces on the object is Zero
So, the option A is the correct. They are always balanced forces.
Answer:
yeah
Explanation:
electric fields help the charged particles interact
and isn't magnetic field the same as electric field.
T² caries directly as R³ .
This is Kepler's 3rd law of planetary motion .
Answer:
(a) 8.362 rad/sec
(b) 6.815 m/sec
(c) 9.446 
(d) 396.22 revolution
Explanation:
We have given that diameter d = 1.63 m
So radius 
Angular speed N = 79.9 rev/min
(a) We know that angular speed in radian per sec

(b) We know that linear speed is given by

(c) We have given final angular velocity 
And 
Time t = 63 sec
Angular acceleration is given by 
(d) Change in angle is given by
