Pls do #9 and the question for brainiest:)

Independent variable: the results with soapy water, since is not "original", it is what wants to be tested, in comparison to the clear water.

Dependent variable: the results with plain water, since it is our guide in the experiment.

Explanation:

Constant or control variable: the differences between the two. I knew that the oil should have less surface tension than the water, but we had equal results – 23 drops for each. Soapy water had the least surface tension. We were only able to get 11 drops of soapy water on the penny.

hope this helps :) comment if you have any other questions on this!!

#9 I cant see what steps 1-7 are so hopefully you were meaning number 10 and ill do that below this

# 10 you just do the drops on a penny until it spills over and do it 5 times then add up all the drops for each of the 5 times together and divide it by 5 because you did the trials 5 times and you get your answer

ex.

This is just an example you might have more or less drops

Trial 1:   10

Trial 2:   11

Trial 3:   10

Trial 4:   9

Trial 5:  11

so add them all up 10+11+10+9+11= 51

you get 51 so divide that by 5 and you get 10.2

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >