From your local latitude, what is the declination of a star that ...

[chads108]

From your local latitude, what is the declination of a star that appears on the southern horizon (0 altitude)?

Question 2

Rank the magnitudes of the forces exerted on the following particles from largest to smallest. In your ranking, display any cases of equality.
   (a) an electron moving at 1 Mm/s perpendicular to a 1-mT magnetic field
   (b) an electron moving at 1 Mm/s parallel to a 1-mT magnetic field
   (c) an electron moving at 2 Mm/s perpendicular to a 1-mT magnetic field
   (d) a proton moving at 1 Mm/s perpendicular to a 1-mT magnetic field
   (e) a proton moving at 1 Mm/s at a 458 angle to a 1-mT magnetic field

  1.d > a = c > b > f
  2.a > c > d > b = c
  3.c > a = d > e > b
  4.b > f > c > d > a
  5.b > c > a > f > d

[ricroger]

Answer to Question 1

The answer depends on the latitude as perceived by the observer. The star will be 90
south of the observer's position. Example: If the observer is at 40N, the declination
of the star will be 90 south of 40N. The answer is 50S.

Answer to Question 2

3

[chads108]

Wow, this really help

[amandalm]

Gracias!