Which phrase describes an irregular galaxy? Check all that apply.

Has a round shape

Contains many young stars

Contains lots of gas and dust

Has arms that extend from the center

Is smaller than other types of galaxies

An irregular galaxy is the one which does not have any shape. It means it does not fit into the categories described by the Hubble. Such types of galaxies contain large amount of dust and gases. These are a site of stellar formation and hence contain young stars and are very bright. these galaxies are usually smaller than other types of galaxies. for example: Large Magellanic Clouds and Small Magellanic Cloud. Therefore, the phrases that describe an irregular galaxy are:

1. contains many young stars

2. contains a lot of gas and dust

3. is smaller than other types of galaxies

Explanation:

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j