#$&*
PHY 121
Your 'cq_1_27.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** **
Copy the problem below into a text editor or word processor.
• This form accepts only text so a text editor such as Notepad is fine.
• You might prefer for your own reasons to use a word processor (for example the formatting features might help you organize your answer and explanations), but note that formatting will be lost when you submit your work through the form.
• If you use a word processor avoid using special characters or symbols, which would require more of your time to create and will not be represented correctly by the form.
• As you will see within the first few assignments, there is an easily-learned keyboard-based shorthand that doesn't look quite as pretty as word-processor symbols, but which gets the job done much more efficiently.
You should enter your answers using the text editor or word processor. You will then copy-and-paste it into the box below, and submit.
A ball of mass 400 grams is immersed in water. The ball is suspended in the water by a rubber band chain which exerts a tension force of 2.5 Newtons on the ball.
• What is the weight of the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
.4 kg * 9.8 m/s^2 = 3.92 N.
#$&*
• What is the buoyant force on the ball?
answer/question/discussion: ->->->->->->->->->->->-> :
2.5 N - 3.92 N + Fbuoy = 0
Fbuoy = 1.42 N
#$&*
• What therefore must be its volume?
answer/question/discussion: ->->->->->->->->->->->-> :
1000 kg / m^3 * 9.8 m/s^2 = 9800 N / m^3
V * 9800 N/m^3 = 1.42 N
V = 1.42 N / (9800 N/m^3) = .000145 m^3
#$&*
• What is its density?
answer/question/discussion: ->->->->->->->->->->->-> :
400 grams / (145 cm^3) = 2.8 grams / cm^3
#$&*
*#&!*#&!
&#Good responses. Let me know if you have questions. &#