Jim draws a wave that looks like this wave:

if he increases the number troughs that pass a point in a given time. what has he decreased?

frequency

wavelength

amplitude

intensity

I have a question like this on my test!

The answer is wavelenth. :)

Hope This helps!!

Option (4) is the correct answer.

Explanation:

Bases are the substances that produce hydroxide ions upon dissociation.

For example,

When excess of acid is formed in our body then a base like antacid tablet should be taken so that excess of hydrogen ions produced in the body can be neutralized by the hydroxide ions produced by the intake of antacid or base. This is the most common use of bases.

Hence, we can conclude that a common use of bases is  to reduce indigestion.