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Phy 231
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: ->->->->->->->->->->->-> :
Wball = mass * accel = 0.400 kg * 9.80 m/s^2 = 3.92 N
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What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
Buyont force = t up - Fball down = 2.5 N - 3.92 N = -1.42 N
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What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
h20 = 1 gram / cm^3
force water displaced = 1.42 N
mass water displaced = (1.42 kg * m/s^2 / 9.80 m/s@ = 0.1448 kg
volume of ball 145 g * ( 1 cm^3 / 1 gram = 145 cm^3
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What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
d = mass /volume = 400 g / 145 cm ^3 = 2.75 grams / cm^3
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15 mins
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&#Your work looks very good. Let me know if you have any questions. &#