Q. A polar bear starts at the North Pole. It travels 1 km south, then 1 km east, then 1 km north to return to its starting point. This trip takes 30 min. What was the bear's average speed?
Q. The difference in potential between the accelerating plates of a TV set is about 26000 V. If the distance between these plates is 1.5 cm, find out the magnitude of the uniform electric field in this region.