Are My Test Review Answers Correct?

[iirevolverii]

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]

 

[iirevolverii]

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.

 

[kalery]

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

 

[iirevolverii]

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?

 

[iirevolverii]

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

 

[iirevolverii]

Can anyone please check over my work.. I need to know if what I studied is right.
I will greatly appreciate it.