Help.now please

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

What consequences could gen galvez have faced for his major act of bravery?

Your competitor is called create your own yogurt, and it uses artificial flavors that customers use to create their own yogurt. in the lesson, you learned about three techniques businesses can use to compete with one another. in two to three sentences, explain how you will address each area of competition to make your business successful against this competitor.