Two main factors affect the speed of sound: the material that makes up the medium—such as air or water—and the temperature. If we know the medium and the temperature, however, we can predict the speed of sound.
Geomorphology is the study of landforms, their processes, form and sediments at the surface of the Earth (and sometimes on other planets) in the aspect that it is dimensional. Study includes looking at landscapes to work out how the earth surface processes, such as air, water and ice, can mould the landscape.
The answer is Brazil I think
Answer:
$10
Explanation:
Given data
A phone costs $50
Discount = 20% off
Although we have no set of options to choose from, here is the Answer
Let us compute the discounted amount
= 20/100*50
=0.2*50
=$10
Hence the amount that was discounted is $10
