1. I really need a public answer huhu, please help me I really need a public answer huhu, please help me I really need a public answer huhu, please help me

Hi, I need help, a lot of help with fluids. Can someone pleasehelpme work out these problems. I really need your help because Iamcurrently suffering with immense pain because of a surgery ofmywisdom tooth, so I really need help with these problems. Thelinkto the problems are below. Please do help me. I really means alot.I would like to know how to get the answer to numbers

10,11,12,13,

Just these numbers.Please
The link:
http://www.fileswap.com/share/197a599d12bfd1794e4b264dd333f6ef/Homework10.pdf.html

Go to this link and press download and you will download a pdffilewith the questions in it. Thank you so much. I reallyappreciateit.

THIS HAS BEEN STUMPING ME. Please help me (I'd really appreciateequations to solve this):

A transverse wave of frequency 30 Hz propagates down a string. Twopoints 25 cm apart are out of phase by pi/4 .

A.) What is wavelength of the wave? (answer in units cm)

B.) At a given point, what is the phase difference (as a multipleof p) between two ‘displacements for times 10 ms apart? (answer inunits of pi)

C.) What is the wave velocity? (m/s)

Calculate the magnitude of the electric field at the origin due to the following distribution of charges: +q at (x,y) = (a,a), +q at (a,-a), -q at (-a,-a) and -q at (-a,a). Where q = 5.60 × 10^-7 C and a = 4.60 cm. please show work and answer! I have tried this problem so many times. I do really need to see where I made my mistake