Recent content by MightyMan11

Ah. The electronegativity difference between sulphur and hydrogen seems to low to have a hydrogen bond. That would leave structure 1 (also nitrogen and hydrogen have an electronegativity difference that is high enough to create a H-bond). Thank you, Ygggdrasil

Homework Statement The following structures illustrate hydrogen bonding interactions between amino acid side chains and/or backbone atoms within a protein structure. In which of the following figures are the structures and hydrogen bonding completely correct? Homework Equations...

Thanks. I had completely forgotten about the acetic acid that forms.

Homework Statement What is the pH of the solution that results from mixing the following four solutions together: (i) 150 ml of 0.250M NaCl (ii) 300 ml of 0.200M HCl (iii) 100 ml of 0.050M HNO3 (iv) 450ml of 0.200M NaOAc Homework Equations The Attempt at a Solution Firstly...

I solved it! Could a moderator please close this thread? Thanks.

Homework Statement Three identical small Styrofoam balls (m = 1.84 g) are suspended from a fixed point by three nonconducting threads, each with a length of 46.5 cm and with negligible mass. At equilibrium the three balls form an equilateral triangle with sides of 30.0 cm. What is the common...

i see. \lambda=\frac{2nd}{m} if m=0, then d would equal zero also, setting P as the 3rd dark fringe, you would get the answer 750nm. however, the equation i stated above happens to be the same equation on my formula sheet as for constructive interference (whereas the dark fringes are...

Homework Statement Monochromatic light of wavelength 500nm shines on a pair of identical glass microscope slides that form a very narrow wedge, as shown in the diagram. The top surface of the upper slide and the bottom surface of the lower slide have special coatings on them so that they do...

AHHH... Looks like it. Thanks for the help and the welcome :smile:

Homework Statement A 478.0 g cart is released from rest 1.16 m from the bottom of a frictionless, 31.0° ramp. The cart rolls down the ramp and undergoes a collision with a rubber block at the bottom. After the cart bounces, how far does it roll back up the ramp if the maximum force applied is...

Ah. Thank you very much for your help.

Wow, I didn't catch that... Does that mean then the first stage of the rocket is still moving up, just at a slower speed than the second stage? (1192-32.4=speed of first stage)? And since the first stage is "slowing down", if momentum is conserved the second stage should "speed up"?

Homework Statement A two-stage rocket is traveling at 1192.0 m/s with respect to the Earth when the first stage runs out of fuel. Explosive bolts release the first stage and push it backward with a speed of 32.4 m/s relative to the second stage. The first stage is 2.00 times as massive as the...