Một thùng cao 2m đựng đầy nước. So sánh áp suất nước tại hai điểm A và B trong hai trường hợp: a, A và B lần lượt cách mặt nước 0,4m và 0,8m
b, A và B lần lượt cách đáy thùng 0,4m và 0,8m

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.