Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Answer:
I think the answer is Imagery
It should be where the rivers separate through Nigeria
Due to loose environmental and worker safety laws in factories, Death Rates along the Texas-Mexico border are some of the world's highest
what make people cringe is that 85 % of the bodies that found dead in Texas-Mexico border are the workers that came from Mexico, not Texas.
hope this helps
The answers that apply are:
1), 2) , 3), 4)
Let's look into them one by one:
1)It is absorbed by Earth.
- Earth is indeed a material that will absorb solar radiation, this is one of the reason why we have a different temperature in the morning and at night.
2)It is reflected by clouds.
- Cloud can reflect solar radiation as it is made up of water particles which can reflect the solar radiation back. This is why in a foggy day the sunlight is dimmer.
3)It is reflected by glacial ice.
-Glacial ice can reflect solar radiation. As glacial ice is smooth and light in colour,much solar radiation that was on the glacier is reflected, this is one of the reason how the North Pole and South Pole are cold all year.
4)It is condensed into visible light.
Solar radiation can light up the area depending on it's intensity, the more intense the radiation is,the brighter it will be.
5) is amplified by water molecules.
Although water molecules can keep the radiation as it has a high specific latent heat, it does not amplify the solar radiation.
Hope it helps!
