25 points and brainiest answer for general science !
a line of sight to the top of a tree meets the at an angle of 45°. the distance to the base of the tree was measured and drawn to scale on the student's drawing as shown.
how tall is the tree?
a) - 13.5 cm
b) - 135 cm
c) - 1350 cm
d) - 13500 cm

Aregular polygon has angkes of size 150° each.how many side has the polygon

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

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