Recent content by f25274

Thanks for the good advice!

Hello. I find myself struggling in my first proof based math class, number theory. I have taken math up to linear algebra and differential equations. It is elementary number theory so it really should not be that hard. It was probably the easiest class available that was proof based. However...

I am in my last year of high school. I do not know if I will become a mathematician or physicist. Right now, I enjoy physics more but I will double major in math and physics anyway. I know that research experience is important in undergraduate physics. However, how important is undergraduate...

I know that, theoretically, I can be a physicist no matter where I go to college (normal state colleges being the lower limit) as long as I get a physics degree. But from what I have read and heard, obtaining a physics degree from a top college is crucial if I wanted to be a good physicist. The...

Oh, they aren't moving in opposite directions since the two protons are the same charge. One is moving in a direction where the other proton is but the other is initially at rest, not moving towards the other proton.

Haha. Yeah, I forgot that it was a proton. The center of mass way worked! Thanks. Though I don't get how both their final kinetic energies would be zero. The other proton would start moving as the moving one came closer, right?

The answer is 0.46pJ but I don't know why it is that.

I don't even know why I am having trouble with this problem. Homework Statement Two protons are initially an infinite distance apart. One of the protons is initially at rest, and the other is approaching the other at a certain speed. What kinetic energy must the other proton have so that their...

I don't think there was work done by an outside force. There is no friction in this problem.

The 2.45 was a/2 Acceleration due to gravity was gsin(30)=4.9 I'll try to use symbols in my answer Would it be kinetic energy(before compressing)+potential energy (spring)= gravitational energy?

Homework Statement A 3.00 kg block starts from rest and slides a distance d down a frictionless 30.0° incline. While sliding, it comes into contact with an unstressed spring of negligible mass. The mass slides an additional 0.219 m as it is brought momentarily to rest by compression of the...

If you differentiate the d-t function you get the v-t function. The second derivative of the d-t funciton is the a-t function. You just need to know how to draw the function after you solve for it.

The derivative of x^x is x^x(lnx+1) but what would be its antiderivative? I don't think the answer is in elementary terms. According to someone there is a special function made just to answer this question. So what is it?

I don't think I understand what you mean by separating as a function of time rBA=(2.5-40cos(37)t)i+(4-t(22+40sin37))j rBA=(2.5-31.945t)i+(4-46.073t)j :( Is this what you mean by simple?

Ship A is located at 4 km north and 2.5 km east of ship B. Ship A has a velocity of 22 km/h toward the south, and ship B has a velocity of 40 km/h in a direction 37 degrees north of east. (a) What is the velocity of A relative to B in unit-vector notation with i toward the east? (b) Write an...