Are My Test Review Answers Correct?

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The user is seeking validation for their answers on a test review, specifically for four problems, and has shared images of their work. They realized they needed to convert grams to kilograms for questions 2 and 3, which significantly altered their results. After making the conversions, they reported new values for these problems, including a velocity of 673 m/s, which they believe is more reasonable than their initial answer of 22 m/s. The user is asking for feedback on their revised calculations and overall accuracy. They express appreciation for any assistance provided.
iirevolverii
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Hey hows everyone doing, this is the first time I am posting HW.
I need help with 4 problems which are from my test review.
Attached are scan images of the test review sheet with solved answers.
I need to know if I have done this right. Thanks.

Homework Statement



On image.

Homework Equations



On image.

The Attempt at a Solution



On image.

Youll have to fix the links. When you see the image, just right click and save on desktop to preview in small version, because the image is big. Thanks.

www.imghost.cc/files/1b9puskkr5mofc56qvh8.jpg[/URL]

[PLAIN]www.imghost.cc/files/4d755578ezxik4w2kf8g.jpg[/URL]
 
Last edited by a moderator:
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thanks for fix the links..

Someone please check over my work.
I did notice for question numbers 2 and 3, i forgot to convert the grams to kilograms.
Once I go home from work, will sovle them with the converted numbers.
 
Last edited:
On problem #3 you need to convert the mass to kilograms when calculating the mass-per-unit-length in the velocity equation.

Your numbers will turn out more reasonable. 22 m/s on a short string seems a bit much :p
 
kalery said:
On problem #3 you need to convert the mass to kilograms when calculating the mass-per-unit-length in the velocity equation.

Your numbers will turn out more reasonable. 22 m/s on a short string seems a bit much :p

I just did that and what i got for velocity was 673 m/s.. this is way more than the previous answer of 22 m/s.

After converting the grams to kilograms.. this is what i got for problem #'s 2 and 3.
2) A = 0.146 m
t = 0.160 s

3) v = 673 m/s
wavelgenth = 3.00 m
f1 = 224 hz
f3 = 673 hz

Did I do the rest correctly?
 
Last edited:
I just redid problems 2 and 3 with the correct conversions.

You will have to fix the links, it won't let me because I don't have 15 posts.

vvww.imghost.cc/files/l2mjf2aws0n63fafwxbm.jpg

vvww.imghost.cc/files/377doh319isr7usmkatz.jpg
 
Can anyone please check over my work.. I need to know if what I studied is right.
I will greatly appreciate it.
 

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