Q. Two identical point charges (q = +3.80 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.320 m. A test charge (q0 = -2.10 x 10-8 C), with a mass of 4.40 x 10-8 kg, is released from rest at one of the corners of the square. Determine the speed of the test charge when it reaches the center of the square.
Q. A tortoise can run with a speed of 0.10 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.0 minutes. The tortoise wins by a shell (20 cm).
A) How long does the race take?
B) What is the lenght of the race?