Question

correct option.
Q.1. The rate of change of momentum with respect to time is
measured in-
(a) Kg m/s
(b) Kgm
(c) Kg m/s
(d) Kg
Q.2. Which of the following are not compounds?
(a) Chlorine gas (b) Carbon dioxide
(c) Water
(d) Iron Sulphide​

Answer 1

Answer:

Main Sequence Stars

The main sequence stars are powered by the fusion of hydrogen into helium in their cores. About 90% of the stars in the Universe are main-sequence stars, including our sun. They usually range from one-tenth to 200 times the Sun’s mass.

Blue Stars

These types of stars are quite rare with spectral types of either O or B. Their temperatures are around 30.000 K, with luminosities around 100 to 1 million times that of the Sun. They usually have a mass around 2.5 to 90 times that of the sun and last about 40 million years