Answer:
Explanation:
Carbon Dioxide has increased in the last 100 years because we’ve been told it has. We don’t know via our own senses of course, so we just have to accept that it has. I personally don’t know how CO2 levels are measured since different parts of the world have different levels of CO2. For instance, the Pacific Ocean which occupies 30% of the entire planet has no trees or green plants at all and therefore absorbs only small amounts of CO2.
Answer:
There's a formula for finding the coefficient of friction i.e. μ = f÷N
hope it helps!
Answer:
Columns of the periodic table are called groups.
Rate of speed, probs is the answer
Answer:
Explanation:
The absorption line spectrum shows what we see when we look at a hot light source (such as a star or light bulb) directly behind a cooler cloud of gas. Suppose instead that we are looking at the gas cloud but the light source is off to the side instead of directly behind it. In that case, the spectrum would be an emission spectrum.
Emission spectrum have low density and they are produced usually by thin gases by which there are less collision between atoms.
