To which category does galaxy belong? Why does it belong in this category?

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward

What equation is used to calculate the weight of an object on a plant ?