Suppose you want to do an experiment to hear how three different objects with sound when dropped from the same distance. you drop a pebble, a rock, and a grain of sand. what are the variables of your experiment?

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

Can someone me with 6 to 10 plz this is for masteries test.