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.