Which factor will affect the light-gathering power of a telescope?
a.
change in the focal length
b.
change in the diameter of the objective
c.
change in the angle of the objective
d.
change in the elevation of the telescope
e.
change in the type of lenses used

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

Determine the maximum r-value of the polar equation r =3+3 cos 0