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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: ->->->->->->->->->->->-> :
weight = m * g
=0.4kg * 9.8m/s^2
= 3.92 Newtons
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• What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
2.5 N - 3.92 N + F_buoy = 0
F_buoy = 1.42 N.
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• What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
V * 9800 N/m^3 = 1.42 N and
V = 1.42 N / (9800 N/m^3) = .000145 m^3
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• What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
Density = mass / volume
= 400 grams / (145 cm^3)
= 2.8 grams / cm^3
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&#Very good responses. Let me know if you have questions. &#