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Phy 121
Your 'cq_1_27.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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A ball of mass 400 grams is immersed in water. The ball is suspended in the water by a rubber band chain which exerts a tension force of 2.5 Newtons on the ball.
What is the weight of the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
3.92 N approx. .88 pounds
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What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
Bouyant force + weight of ball + tension force = 0 N
Bouyant Force = - 3.38 N
you don't show how you calculated 3.38 N, but that isn't correct.
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What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
3.38 N / 9.8 m/s^2 = 344.8 grams of water have been displaced. And with a density of 1 gram per cm^3, 344.8 cm^3 have been displaced. So the volume of the ball is 344.8 cm^3
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What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
400 grams / 344.8 cm^3 = 1.16 g/cm^3
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Can't tell how you got 3.38 N or what you were thinking. Most of your thinking is correct, but I'll have to ask for a revision to be sure you're on track here.
&#See any notes I might have inserted into your document, and before looking at the link below see if you can modify your solutions. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your old and new solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#