Radon is a naturally occurring gas that's found in most soils and rocks and can cause lung cancer.
Answer: If, enough evidence accumulates to support a hypothesis, it moves to the next step (known as a theory) in the scientific method and becomes accepted as a valid explanation of a phenomenon.
Explanation: a scientific theory is the framework for observations and facts.
( hope this helped )
Maximum and minimum of two concurrent forces occur when the forces are collinear. Maximum occurs when they are in the same direction, and minimum occurs when they are opposite in directions.
This reduces the problem to a sum an difference problem.
A+B=45
A-B=5
So
A=(45+5)/2=25
B=(45-5)/2=20
Check:
maximum=25+20=45
minimum=25-20=5
ok
<h2><u>STRATOS</u><u>PHERE</u></h2>
The troposphere is heated from the ground, so temperature decreases with altitude. Because warm air rises and cool air sinks, the troposphere is unstable. In the stratosphere, temperature increases with altitude. The stratosphere contains the ozone layer, which protects the planet from the Sun's harmful UV radiation.
Hope It Helps!
It has
-- 90 grams of mass
-- 0.8892 newtons of weight
-- 1.62 joules of kinetic energy, and
-- 0.54 kg-m of momentum.