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Physics 13 Online
OpenStudy (kitten_is_back):

What is the density of the marble? A. 0.10 g/mL B. 240 g/mL C. 40 g/mL D. 1.875 g/mL https://static.k12.com/calms_media/media/1276000_1276500/1276025/2/fae996f06f5cef8f9c69da8214c75a88e894bf30/191325.jpg

OpenStudy (kitten_is_back):

@Phebe c

OpenStudy (kitten_is_back):

@Ashleyisakitty

OpenStudy (kitten_is_back):

@DARTHVADER2900

OpenStudy (kitten_is_back):

@love10129151

OpenStudy (mathmate):

Hmm, it's not C. I wish people don't guess when they're trying to help. In any case, CoC says we don't give direct answers. Hint:First find the volume of the marble, then divide the mass by the volume just found to get the density in g/mL.

OpenStudy (kitten_is_back):

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OpenStudy (kitten_is_back):

http://prntscr.com/88f671

OpenStudy (mathmate):

Do you know the volume of the marble, by reading the difference in liquid levels of the graduated cylinder?

OpenStudy (kitten_is_back):

40 and a hlaf

OpenStudy (mathmate):

Before immersing the marble, the left reads 40 mL. After the marble is dunked in, the right reads???

OpenStudy (kitten_is_back):

almost 50

OpenStudy (mathmate):

Yes, I read 48 mL. there are 5 spaces between 40 and 50, so each graduation stands for 2 mL, so the volume of liquid AND marble is 48 mL. So from this, can you find the volume of the marble?

OpenStudy (kitten_is_back):

so its 48 and 40?

OpenStudy (mathmate):

Yes, the difference gives the volume of the marble, since the level went up 8 mL after putting the marble in the liquid.

OpenStudy (kitten_is_back):

oh okay

OpenStudy (mathmate):

Finally, you can find the mass density by dividing the mass by the volume. The answer is one of the four choices.

OpenStudy (kitten_is_back):

1.2

OpenStudy (mathmate):

What is the mass of the marble, and what is the volume (which we found earlier)?

OpenStudy (kitten_is_back):

15 and 8

OpenStudy (kitten_is_back):

d

OpenStudy (kitten_is_back):

THANKS :d

OpenStudy (mathmate):

Exactly! You're welcome!

OpenStudy (kitten_is_back):

:)

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