A .2 kilogram bullet traveling at 3000m/s strikes a block of wood that weighs 5kg. With what velocity will the block and bullet move after the collision? A. 15 m/s
B. 115.4 m/s
C. 330.8 m/s
D. Please do more examples because idk

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.