Recent content by physics120

But how do I find v*r? I handed in my assignment, however, I would still like to know how to do this. Thank-you, by the way, for your help. appreciate it!

Well first, I don't understand what to do with the "located in the z=0 plane at x=3 m, y= 4m" part of the question. Do I use that as the starting point, then point the magnetic field down 2 and to the side 2 since they say the magnetic field is located at x=2m, y=2m?

No, i was just given this formula. However, in another question similar to this one except that the velocity is strictly horizontal, this formula is used to determine the magnetic field. I don't really understand your method though. Are you saying to use the eqn for the electric field?

sorry r^2 in the equation would be= (sqrt(8))^2 which equals 8

Yes, that makes sense! But how would I go about doing this, since the velocity is in both the x and y direction? I think I have to split it up into a parallel and perpendicular component. However, if I did that, what do I do for the R and r components? I am a bit lost with this one. would r=...

Homework Statement A proton has a velocity of 1.0 * 10^2 m/s in the x direction + 2.0*10^2 m/s in the y direction and is located in the z=0 plane at x=3.0m, y=4.0m at some time t=T. Find the magnetic field in z=0 plane at x=2.0m, y=4.0m. Homework Equations magnetic field is given by...

Homework Statement The effect of temperature on the rate of a reaction was studied and the following data obtained: k (s-1) T (°C) 3.06×10-4 10 4.84×10-4 16 6.50×10-4 20 1.40×10-3 31 2.87×10-3 42 4.16×10-3 48 5.94×10-3 54 7.92×10-3 59 It is known that...

OK, after looking at the answer over, I am understanding what they are trying to do now. Thank-you for your help.

Well first, this part: "Because v1>v2, it must be that (m1 +m2) * vf = m1v1 + m2v2 > m1v2 +m2v2 = (m1 + m2) * v2. Thus vf > v2." I don't understand where they got "m1v2 +m2v2 = (m1 + m2) * v2" ESPECIALLY THE "m1v2" part. How did they obtain that? I don't really know how they used the law...

Homework Statement I already have the answer, I just need someone to help me understand the answer for the following momentum question: Two balls are both moving horizontally to the right on a table. Ball 1 catches up with ball 2 and collides with it. The balls stick together and continue...

Homework Statement A package of mass m is released from rest at a warehouse loading dock and slides down a h = 3.7 m high frictionless chute to a waiting truck. Unfortunately, the truck driver went on a break without having removed the previous package, of mass 2m, from the bottom of the...

But how do I prove ball c goes the highest? Is it because it has a greater final velocity since, as aznforlife pointed out, "you are right the one being shot up would have the greatest Vy Vya = sin(45)*v Vyb = sin(60)*v Vyc = V" So if it has a greater final velocity, it will have...

But how do I prove ball c has the greatest height? I am trying to show that it will have the greatest speed so I can't say it will have the greatest height because it has the greatest speed, as that is what I am trying to prove. Also, "Yes that's right. But what's to calculate? The greater...

Oh I see now how this question is about energy! So would it be: Vc>Vb>Va ? That is, the ball that is shot at an angle of 90 degrees from the horizontal has the highest speed, then the ball that is shot at an angle of 60 degrees from the horizontal and lastly the ball that is shot at an...

I would assume ball Vc would go the highest because it is shot straight up.