The initial kinetic energy imparted to a 0.020 kg bullet is 1200 j. (a) assuming it
accelerated down a 1.00 m rifle barrel, estimate the average power delivered to it during
the firing. (b) neglecting air resistance, find the range of this projectile when it is fired
at an angle such that the range equals the maximum height attained.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.