Recent content by Decan

got it...thanks!

Also, the homework is due tomorrow and this is the only problem I have left...

Like I said, briefly. We never really talked about these...the prof just gave us equations on the board and told us "use these to solve the homework, you won't be tested on them"

We briefly talked about einstein and E = mc^2 but the professor didnt really go over it...I also understand that .14c means .14 X 3e8...but I don't understand why the answer should be 23,000...any hints?

Homework Statement An electron has a speed of v = 0.14c. At what speed will a proton have a momentum equal to that of the electron? Homework Equations p=mv The Attempt at a Solution MeVe = MpVp where p=proton and e=electron so: MeVe/Mp=Vp Me = 9.109 X 10^-31 kg Mp = 1.672 X...

awesome...thanks!

Homework Statement An important news announcement is transmitted by radio waves to people who are 81 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 2.3 m from the newscaster. Take the speed of sound in air to be 343 m/s. What is the...

I drew out what I think might happen...which one is closer to what really happens? http://img137.imageshack.us/img137/9149/physicsil6.png

So, would the net force then constantly change because the particle does not have constant velocity? If so, would the motion of the particle be in a spiral?

I wonder why that is...

This isn't really a homework question, just something to satisfy my curiosity but if it belongs in the homework section, I really apologize and if the mods could move it to that section, it would be much appreciated. Anywho, in class we talked about a particle accelerated by an electric field...

For starters, what do you have to do? Do you have to balance the redox rxn, or simply figure out the oxidation state?

Just a few thoughts... Macromolecules include carbs, lipids, nucleic acids, and proteins. If you choose to focus on proteins, and specifically enzymes, you should also include why enzymes are so useful. Enzymes are catalysts...the reaction can take place without an enzyme but it may take a...

For the first one, I got 4.8 * 10^-16...the electric field is constant so the force will be constant no matter what point you choose in the field...looks like you chose the midway point, well the potential is not constant throughout the field so if you choose the midway point, you have to divide...

Before I begin, let me say that I'm studying for this exam so my answers may be completely wrong...but here's what I think: Well for part 1, you're on the right track. I think you need to figure out the equivalent capacitance for C2 and C3 before you figure out the equivalent capacitance...