a projectile is fired from the origin (at y = 0 m) as shown in the diagram. the initial velocity components are and the projectile reaches maximum height at point p, then it falls and strikes the ground at point q, which is 20 m below the launch point. assuming air resistance is negligible, what is the horizontal component of the velocity (vx) of the projectile at point p?

35 m/s

zero

105 m/s

140 m/s

70 m/s

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Which is not true of the intertropical convergence zone? a) it features heavy precipitation b) it's where the trade winds collidec) it's a high-pressure zone with sinking air d) it is also known as the doldrums

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states