#$&*
phy 121
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Revision Question on Optical
** **
Assignment 03
Optical Distortion of Paper Rulers
#$&*
According to your results, what would be the length of an object that measures exactly 1 cm on the full-sized copy, if measured using the singly, the doubly, and the triply-reduced copy? Give your answer in the usual comma-delimited format in the the first line, then starting in a new line explain how you got your results.
1cm, 1.25cm_s, 1.56 cm_d, 1.95cm_t
Each smaller ruler created a measurement of about 1.25 times the previous ruler so I applied this to 1 cm.
#$&*
@&
Right idea, but your original measurements were
8.18 cm, 12.51 cm_s, 17.12 cm_d, 25.51 cm_t
Your ratio 1.25 isn't correct for those, or for your other, measurements.
You can of course double-check this by, say, measuring 1 cm on the unreduced copy, using the triply reduced ruler. You'll get more that 1.95 cm_t.
If you get the correct ratio, you'll get valid results.
** **
I do not understand how to find my ratio? Do I just subtract each size from each other, then average those answers?
** **
@&
It's better if you discover the answer yourself.
See if you can answer the following questions. I think you will figure it out in the process of answering, but if not I'll explain it further:
How did you get 1.25 in the first place?
If 1 cm = 1.25 cm_s, then how many cm_s would you get if you measured each of the following:
2 cm
5 cm
10 cm
8.18 cm?
Is your last result consistent with the fact that when measuring an object of length 8.18 cm, you also measured it to be 12.51 cm_s?
*@
#$&*
Phy121
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Metal Strap
** **
** **
Hello Professor Smith,
I did not receive a metal strap in my initial lab materials package, should I just use the straw for the first part of the experiment? Thanks so much!
@&
The strap is in the full materials package, not in the initial materials. This is an important experiment, so you should wait until you purchase the full materials package.
I've been cleared to drive a week earlier that I expected, so I should be able to have the full materials packages available in the bookstore early next week.
*@