A proton traveling at 27.7 with respect to the direction of a magnetic field of strength 3.00 mT experiences a magnetic force of 8.63x 10N.Calculate (a) the proton's speed and (b) its kineticenergy in electron volts (a) Number ఎ86448,75 Units ms

4. Consider again the situation given in Problem 1. (a) Find the center-of-mass of the system made up of m, and m,, taking the origin to be at P. (b) Draw a free body force diagram with the all of the mass (m, + m,) concentrated at this center-of-mass position. (c) Find the torque about P due to (m, + m2) concentrated at this center of mass position. How does this result compare to (d) in Problem 1? [We will make use of this technique often for certain types of future problems.]

Determine F1 and the angle of Theta. If the magnitude of the resultant force acting on the eyebolt is 800N and its direction measured clockwise from the positive x axis theta=30.

Given the vectors Ā = (2î – j) N and B = (3î + j)m. Then, 3A B equals O a. -5 N- m O b.15 N m OC. 5N m O d. -15 N· m