Aresistance of 10ohm is bent in the form of a closed cirle. what is the effective resistance between the two pints of any diameter of this circle?

Vey interesting question, your Highness.

If you measure between the ends of any diameter, then half of the circle is on
one side of those points, and half of it is on the other side of them.  You are
measuring the effective resistance of 2 halves of the resistance, in parallel.  So
the effective resistance is 1/4 of the conductor's total resistance . . . 2.5 ohms.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

The answer is  a.first and third quarters