2. A 12 gram steel projectile is shot horizontally at 20.0 m/s from the top of a 49.0 m high tower. How far from the base of the tower does the projectile hit the ground? What angle is needed to reach the furthest distance
away from the tower? If the original projectile was replaced with a steel projectile with a 20 gram mass how far
from the base of the tower would the new projectile hit the ground?

Which is not true about oxygen-17 and oxygen-18?

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

In what direction does an applied force move an object