Recent content by cherry_cat

Thanks so much, the diagram really helped me visualise where they should be located. I realized I was looking at the problem in completely the wrong way.

Homework Statement Find the magnetic field from a proton at location r, with velocity v, if the cross-product of vxr is <0,0,6.2e4> and the magnitude of r is 7.34e-2Homework Equations B⃗ =μ/4π * qv x r /r^2 The Attempt at a Solution Substituting in 10^7 for μ/4π 1.6e-19 for q <0,0,6.2e4>...

Homework Statement The electric field at a location C points north, and the magnitude is 1*10^6 N/C. Where should you place a proton and an electron, at equal distances from C, to produce this field? Give a numerical answer and a direction for each particle (North, South, East or West)...

Homework Statement A hollow ball with radius R = 2 cm has a charge of -2 nC spread uniformly over its surface (see the figure). The center of the ball is at P1 = <-3, 0, 0> cm. A point charge of 6 nC is located at P3 = <6, 0, 0> cm. 1.What is the net electric field at location P2 = <0, 4, 0>...

That's true. I must have made a foolish mistake somewhere. Thanks for pointing it out, I'm new to physics and sometimes I make mistakes and don't notice. I will try to be more careful.

Yes the momentum would have to be constant before and after the collision, so it would be 7.04 kg.m/s, meaning 2*p would be 14.08 kg.m/s Which means you could set the after section, of m1v1+m2v2=7.04 And because the ball lost no energy, it would be -7.04+m2v2=7.04 So m2v2=14.08 v2=14.08/6e24...

The before section would be m1v1 = 0.16*44 = 7.04 kg.m/s as the ball is traveling towards the wall After the ball hits the wall, it would have negative momentum but assuming no loss in kinetic energy, wouldn't it have a negative momentum of 7.04 kg.m/s and the Earth would have two times the...

Homework Statement We can use our results for head-on elastic collisions to analyze the recoil of the Earth when a ball bounces off a wall embedded in the Earth. Suppose a professional baseball pitcher hurls a baseball (m = 160 grams) with a speed (v1 = 44 m/s) at a wall, and the ball bounces...

Thank you! I didn't even notice that. Just shows that I need to take more care in my problems when working. Thanks very much.

Homework Statement A system consists of a 3 kg block moving with velocity ‹ 14, 5, 0 › m/s and a 7 kg block moving with velocity ‹ −4, 6, 0 › m/s. (a) What is the momentum of this two-block system? (b) Next, due to interactions between the two blocks, each of their velocities change, but the...