Aparticle is moving in a circle of radius r with constant speed. the time period of particle is t=1 second. in a time t=t/6,if the difference between average speed and magnitude of average velocity of particle is 2 m/sec, find the radius of circle

R = 7.06 m

Explanation:

As we know that time period of the particle is T = 1 s

so the angle covered by it in t = T/6 seconds is given as

now we know that total distance moved by the particle will be

now average speed is given as

now for displacement of the particle we know that

so average velocity is given as

now we have

i guess it’s a and b

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.