Ike is conducting an experiment in which he measures the density of several objects and then observes how long it takes each object to sink in a tank of water. Which table below would be the most useful for Ike to include in his notes?

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell