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: ->->->->->->->->->->->-> : .4kg*9.8m/s^2.
• What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> : .4kg*9.8m/s^2=3.92N. Bf=3.92-2.5=1.42N
• What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> : 1.42N/9.8m/s^2=.145kg or 145g thus 145cm^3
• What is its density?
answer/question/discussion: ->->->->->->->->->->->-> : D=m*v D=.4kg*145cm^3=58kg/cm^3
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30min
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Great, but you got the density calculation backwards. Check the link and be sure you understand. No revision necessary.
&#Please compare your 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. &#