Question

What is combustion?Name the different types of combustion.​

Answer 1

Answer:

A chemical process in which a substance reacts with oxygen to give off heat and light is called combustion.

There are three types of combustion. They are:

• Rapid combustion - This type of combustion produces very large quantities of light and heat. Examples are burning of stove.
• Spontaneous combustion - The combustion occurs on its own. Examples are the lightning striking a forest and causing forest fires.
• Explosive combustion - A very fast combustion which produces light, heat and sound. Examples are bursting of crackers.

Hope this helps!

Answer 2

Answer:

14. If 0° <O< 90° then find 0 satisfying the following.

(a) 2 cos 0 =1 (b) 3 tan 0 =1 (c) 2 cos 30 =1

(e) cos 0 = 13 sine (f) 2 sin 30 =1 (g) 3sec 0 = 2

(d) 2 sin 20 = V3

15. In each of the following find A for nº SA 5 90°14. If 0° <O< 90° then find 0 satisfying the following.

(a) 2 cos 0 =1 (b) 3 tan 0 =1 (c) 2 cos 30 =1

(e) cos 0 = 13 sine (f) 2 sin 30 =1 (g) 3sec 0 = 2

(d) 2 sin 20 = V3

15. In each of the following find A for nº SA 5 90°

Solve plz