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PHY 201
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=3.92N
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What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
3.92N-2.5N=1.42N
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What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
The buoyancy force of the water is 1.42N so the
mass of the water should be 1.42N/(9.8m/s^2)
which is .145kg because the water will only
push back the amount of displacement. Would
the volume of the sphere be equal to this?
Water is 1g/cm^3 and if my fuzzy logic is
correct the sphere is displacing 145 grams of
water. So the object has a volume of
145cm^3????
@&
Good. Not so fuzzy at all.
*@
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What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
If I have guessed correctly about the volume of
the sphere the density could be found by
dividing the mass by the volume.
p=m/V
p=400g/145cm^3=2.76g/cm^3.
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*#&!
&#Your work looks good. See my notes. Let me know if you have any questions. &#