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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: ->->->->->->->->->->->-> :
F_g = m*g = .400 kg * 9.8 m/s^2 = 3.92 N
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• What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
F_net = 0 = F_b + F_g + T
F_b = 3.92 N - 2.5 N = 1.42 N
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• What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
F_b = 1.42 N = m_h20 * g
M_h20 = 1.42 N / 9.8 m/s^2 = 0.145 kg = 145 g
145 g * (1 cm^3 / 1 g_ = 145 cm^3
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• What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
D=m/v = 400 g / 145 cm^3 = 2.76 g/cm^3
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&#Very good responses. Let me know if you have questions. &#