Author Question: A 10-inch telescope is used to determine if what appears to be one star is actually two stars. Stars ... (Read 91 times)

genevieve1028 · **on:** Jul 29, 2018

A 10-inch telescope is used to determine if what appears to be one star is actually two stars. Stars are so far away that they are essentially point sources.

How close, in angle, can two stars be and still be resolved by this telescope? Use a wavelength of 550 nm. A)

4.2 10-8 degree
B)

2.64 10-6 degree
C)

3.0 10-4 degree
D)

1.5 10-4 degree
E)

6.6 10-8 degree

Question 2

If the potential is given by V = xy - 3 z-2, then the electric field has a y-component of

A)

x + y - 6 z-3.
B)

-y.
C)

-x.
D)

x + y.
E)

cannot be determined