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NikAS [45]
3 years ago
8

What happens when parallel light wave strikes a rough, uneven surface

Biology
2 answers:
Shalnov [3]3 years ago
7 0
It diffuse reflection, I think. I'm also taking a test.
Minchanka [31]3 years ago
5 0
The rough uneven surface gets scattered;)
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Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree
Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5760}=0.00012years^{-1}

b) for completion of 36% of reaction

t=\frac{2.303}{k}\log\frac{100}{36}

t=\frac{2.303}{0.00012}\log\frac{100}{36}

t = 8515 years

The time was 8515 years.

3 0
3 years ago
Guys how to convince my dad to give me money
guajiro [1.7K]

Answer:

hey dad can i have some money

if he says no

then no

Explanation:

3 0
2 years ago
Read 2 more answers
What are nucleic acids made of?
LekaFEV [45]

Answer:

Explanation:

nucleic acid is a polymeric macromolecule made up of repeated units of monomeric 'nucleotides' composed of a nitrogenous heterocyclic base which is either a purine or a pyrimidine, a pentose (five carbon) sugar (either ribose or 2′-deoxyribose), and one to three phosphate groups.

4 0
3 years ago
Which of the following best describes the scientific idea regarding primordial soup?
bija089 [108]

It refers to the idea the prehistoric oceans combined with lightning formed the building blocks of life.

Explanation:

The primordial soup refers to the idea that prehistoric oceans combined with lightning to form the building blocks of life.

The soup can be regarded as the soup of life through which the first nuclei acids were synthesized.

  • It was a hypothesized set of conditions available when the earth was initially formed about 4.5 billion years ago.
  • The miller-urey experiment was set up in 1930's to demonstrated this soup of life.

Learn more:

Earth brainly.com/question/4545456

#learnwithBrainly

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3 years ago
Biotic factors cannot live without abiotic factors.<br><br> True<br> False
sergeinik [125]
Depends, if the biotic factor is a chipmunk or something of that case, its natural habitat is a rock, which is biotic. but...if the animal is something like a deer they don't need abiotic factors. its your chose to chose but I'm leaning more twords false because not ALL biotic factors cant go without an abiotic factor
7 0
3 years ago
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