The ratio of brightness of two stars can be determined by a constant of 2.512 raised to the power of the magnitude difference. the formula
b1
b2
= 2.512(m2 − m1) where b1 and b2 represent the brightness and m1 and m2 refer to the magnitudes of the stars being compared. one star has a magnitude of 0.2, and another star has a magnitude of 2.2. what is the ratio of brightness of these two stars?

6.3

Explanation:

The ratio of brightness of two stars is given by:

Where:

is the brightness of star 1

is the brightness of star 2

is the magnitude of star 1

is the magnitude of star 2

Finally:

This is the ratio of brightness

magnified images possible images can be real = projected onto a screen

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s