Answer:
The wavelength of radio wave is 3m
Explanation:
speed of r.w (v) = 3 × 10⁸ m/s
frequency (f) = 1 × 10⁸ Hz
wavelength (λ) = ?

λ = v/f
= (3 × 10⁸) ÷ (1 × 10⁸)
= 3m
(Correct me if i am wrong)
Answer:
Exothermic reaction
Explanation:
The phase change from liquid to solid by the freezing icicles is a typical exothermic reaction.
An exothermic process is one in which heat is lost to the surroundings.
To form the icicles, the dripping water must loose its heat to the environment. As the water cools below freezing point, the ice forms in form of the icicles observed.
Such reactions giving off heat is an exothermic reaction.
Answer:
Just say I wonder why teachers give homework :/
Explanation:
Answer:

Explanation:
The pH of a solution can be found by using the formula
![pH = - log [ {H}^{+} ]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B%20%7BH%7D%5E%7B%2B%7D%20%5D)
Since we are finding the H+ ions we find the antilog of the pH
So we have

We have the final answer as

Hope this helps you