Which of the following is NOT a type of galaxy? a. spiral c. elliptical b. oval d. irregular

b. oval

Explanation:

A galaxy is usually defined as a system that is comprised of infinite stars, planets, solar systems, interstellar gases, and dust particles. It is extremely large and covers a large portion in space. For example, the milky way galaxy is comprised of the solar system, the sun and the earth, and where life exists.

These galaxies are often characterized by a particular type of shape. This includes-

(1) Spiral type of galaxy

(2) Elliptical type

(3) Irregular type

(4) Spiral barred type

There is no oval type of galaxy discovered so far. So, it cannot be considered as a galaxy.

Thus, the correct answer is option (B).

Your answer is B. Oval

a sonic boom is a loud boom that breaks the sound barrier

explanation:

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000