Question Part Points Submissions Used Item 2 A rifle bullet with mass 8.00 g str

Question

Question Part Points Submissions Used Item 2 A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring. The impact compresses the spring 15.0 cm Calibration of the spring shows that a force of 0.750 N is required to compress the spring 0.250 cm (Figure 1) Part A Find the magnitude of the block's velocity just after impact. Submit Mv Answers Give Up Try Again; 4 attempts remaining Part B What was the initial speed of the bullet? Mv Answers Give Up Try Again; 5 attempts remaining Provide Feedback Continue

Explanation / Answer

B = u0/4 pi q v x rhat/r^2

so for postive charge out of the page

for electron also out of page

so B = (u0/ 4pi) v/r^2 ( 2e + e)*sin(140)

B = 10^(-7)*2.6E5/(1.8E-9^2) *3*1.6E-19*sin(140)=0.0025 T out of page

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