Your best friend always looks on the bright side and is very positive. your friend had which personality trait? a. extroversion b. agreeableness c. conscientiousness d. emotional stability

Plss anybody know how to do this? ? i need the answers from a through d

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)