Magnitude and direction of the sum of momentum
A jogger of 85 kg is heading due to east at a speed of 2.5 m/s. A jogger of 55 kg is heading 30° north of east at a speed of 3.9 m/s. Determine the magnitude and direction of the sum of momentum of the two joggers.
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A golfer, driving a golf ball off the tee, provides the ball a velocity of +39 m/s. The mass of the ball is 0.045 kg, and the period of the impact with the golf club is 3.95 x 10^-3 s. (i) Determine the change in the momentum of ball
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In both formulas x is year, where x=0 corresponds to september 1998. Suppose these trends continue, evaluate year when population of west goma will equal population of east goma.
Determine the numbers of iron atoms are within a unit cell when the metallic iron crystallizes in a cubic lattice and the unit cell length is 287pm. the density of iron is 7.87g/cm^3.
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