hai quả vầu có điện tích lần lượt là q1=2nC q2=-6nC đặt cách nhau 3cm trong chân không. Tính và biểu diễn lực tương tác giữa 2 điện tích đó

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island