The half life of carbon -14 is 5730 years. The carbon -14 undergoes decays to form nitrogen -14. 1000 atoms of nitrogen is formed from 1000 atoms of carbon. Hence carbon -14 decayed from 2000 atoms to 1000. Therefore it is decayed by one half life and the age of the sample is about 5700 years or more accurately 5730 years.
What is radioactive decay?Unstable radioactive isotopes of atoms undergo spontaneous nuclear decay by the emission of charged particles such as alpha or beta. The time required to decay half of the initial amount of the isotope is called half life.
Carbon -14 undergo beta decay and the nuclear reaction is given as follows:
[tex]\rm _{6} ^{14}C \rightarrow _{7}^{14}N + _{-1}^{0}e[/tex]
Thus, one carbon atom is converted one nitrogen atom. Hence, 1000 nitrogen atoms are formed from 1000 carbon atoms. The remaining number of carbon atoms in the rock sample is 1000. Thus, the initial amount was 2000.
The half life of carbon -14 is about 5700 years. Hence, it takes 5700 years to decay from 2000 to 1000 atoms. Therefore, option B is correct.
To find more on carbon-14, refer here:
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Need help I don’t know if I got it right
What are some Cons about cloning?
Answer:
Explanation:
The process is not entirely safe and accurate. Despite being genetically identical with each other, clones will not be the same regarding behavioral attributes. ... It is regarded as unethical, and the probability of abuse is very high. ... The offspring lack genetic uniqueness. ... It is not yet fully-developed.Answer:
1) The process is dangerous.
2) The process is not fully developed yet.
3) Cloning does not always work.
4) Faster aging.
Explanation:
Hope this helps
helpppp pleaseeeeeee
Answer:
Second Choice
Explanation:
75% purple and 25% white
Whenever there is a dominant allele such as the purple, then it over takes the reccesive.
PLEASE HELP ME
I WILL GIVE YOU BRAINLIEST
Answer:
Transcription starts with DNA and ends with RNA the location is at the nucleus
Translation starts with the RNA and ends with Protein the location is at the cytoplasm
number of strands in a DNA is 2 strands it has Adenine, thymine, cytosine and guanine are the four nucleotides found in DNA.
number of strands in a RNA is a single strand it has adenine, cytosine, uracil, and guanine found in the RNA
What health and environment factors negatively impact the flow of blood through the body?
Answer:
Certain types of Air pollution, Diseases
Explanation:
Environmental factors
Carbon monoxide is produced when fuels such as gas, oil, coal and wood do not burn fully. The increase of factories and manufacturing stations globally increases the chances of one inhaling carbon monoxide. When inhaled the carbon monoxide binds the haemoglobin in the blood increasing the chances of heart failure and brain damage.
Health factors
Health conditions such as Obesity, Diabetes can contribute to poor blood flow in the body. If someone were to suffer from obesity they would consequently have fatty deposits in the lining arteries. These deposits shrink the space that blood can pass through arteries. This means the heart has to pump blood harder to achieve the same task as someone able bodied. This dangerous because the heart would be at more risk of failing under the strain of the excess mass.
A pair of jeans marked at R450-00 is sold at a discount of 25%
determine the selling price.
Explanation:
Follow the steps I have showed you in the picture
name three semi permeable membranes in a plant cell
cell wall, plasma membrane and vacuole I guess
Which of the following is the correct equation for photosynthesis?
carbon dioxide + water+ sunlight = oxygen + water
oxygen + water + sunlight - carbon dioxide + sugar
carbon dioxide + sunlight - sugar
carbon dioxide + water+ sunlight - sugar + oxygen + water
Hurry please
Explanation:
Carbon dioxide+Water Sunlight "over" chlorophyll "arrow" Glucose + Oxygen
I hope this helps.. pliiiiiiiiz take note of over an arrow.... they're not supposed to be there I didn't know how to write it
What role does the esophagus play in the human body and what is its importance in the human body
Answer:
The function of the esophagus is to transport material from the mouth to the stomach and to prevent GER by providing an important barrier, that is, the lower esophageal sphincter (LES), to the retrograde flow of gastric contents into the esophagus.
Explanation:
what are the two sides of dna made of?
a) sugar and phosphate
b) sugar and hydrogen bonds
c) sugar and bases
Answer:
its made up of alternating sugar and phosphate molecules. or the first option
Explanation:
The sugar is deoxyribose. The rungs of the ladder are pairs of 4 types of nitrogen bases.
Hope this helps =w=
Whales, which live in the water, have hips. These structures are important for carrying the weight of animals that walk on land. Finding this body part in animals that dont walk on land would lead us to predict what finding in the fossil record?
A Hips in ancient animals that always lived in water
B. Land-dwelling animals that dont have hips
C. A form of whale that lacked this structure
D. An ancestor of whales that walked on land
Answer:
d
Explanation:
Can someone help me
Answer:
B
Explanation:
which organisms have the most amount of energy in the food web
Answer:
Max maximum in autotrophs and producerAnswer:
autotrophs or producers
Explanation:
autotrophs are the plants which prepare their food by photosynthesis
Explain what direct evidence is used to help geologists learn about earths interior
Answer:
Seismic Waves.
Explanation:
Geologists record the seismic waves and study how they travel through Earth. Different types of seismic waves behave differently. The speed of the waves and the paths they take reveal the structure of the planet. Using data from seismic waves geologists have learned that Earth's interior is made up of layers.
Hope I helped, Have a nice day!
-Aadi x
The nitrogen cycle includes physical changes of matter? TRUE OR FALSE?
What NORMAL process do organisms go through after they die, instead of being fossilized?
Answer:
death of cells
Explanation:
because before organisms die all cells die and can not be produced again
PLEASE ANSWER CORRECTLY, WILL GIVE BRAINLIEST
The pedigree diagram shows how a recessive trait is inherited in a family. The red circles show family members with the trait.
the answer is a
proof is that i did it and got it
Answer:
b
Explanation:
What role does the esophagus play in the human body and what is its importance in the human body
what are some ways your body can respond to allergens?
50 POINTS!!!!!!!!!
1. Fill in the complementary DNA strand using DNA base pairing rules.
2. Fill in the correct mRNA bases by transcribing the bottom DNA code
3. translate the MRNA codons and find the correct amino acid using the codon table
4. Use the MRNA sequence to find the correct anticodon for the TRNA molecule
Answer:
PART 1: AAAGTTGCTGGTTG
PART 2:UUUCAACGACCAAC
PART 3:
UUU ---> Phe
CAA ---> Gln
CGA ---> Arg
ACC ---> Thr
AAC ---> Asn
PART 4: AAAGUUGCUGGUUG
Explanation:
Hello There!
PART 1: The first thing we want to do is find the complementary base pairs for the given DNA strand
Remember
The base pairs are
Adenine and Thymine
Cytosine and Guanine
The DNA strand given is
TTTCAACGACCAAC
Now we pair each nucleotide with its complementary base pair
T would change to A
A to T
C to G
and G to C
leaving us with
AAAGTTGCTGGTTG
PART 2: Now we want to transcribe the complementary DNA strand
IMPORTANT NOTE: Transcribing is pretty much like the first part, pairing each nucleotide with its complementary base pair except Adenine changes to Uracil not thymine
so adenine (A) changes to uracil (U)
thymine (T) to adenine (A)
guanine (G) to cytosine (C)
cytosine (C) to guanine (G)
AAAGTTGCTGGTTG
*transcribe*
and we're left with
UUUCAACGACCAAC
The next step is to pair the codons to its corresponding amino acid using the codon table provided below
The first thing we want to do is spread the codons out
Remember codons are a set of 3 nucleotides
Codon 1 (UUU) Codon 2 (CAA) Codon 3 (CGA) Codon 4 (ACC) Codon 5 (AAC)
Now we want to match each codon with its corresponding amino acid
Going from inside to outside using each letter we get that
UUU codes for Phe (Phenylalanine)
CAA codes for Gln (Glutamine)
CGA codes for Arg (Arginine)
ACC codes for Thr (Threonine)
AAC codes for Asn (Asparagine)
PART 4 Finally we want to find the anticodon of the mrna
Which is pretty much pairing each nucleotide base with its corresponding pair
Adenine to Uracil
Uracil to Adenine
Cytosine to Guanine
Guanine to Cytosine
So we'd go from UUUCAACGACCAAC to
AAAGUUGCUGGUUG
HURRY WILL MARK BRAILIEST!!
Having newborn livestock on a farm results in the need to provide special nutritional requirements.
True or false?
Answer: True
Explanation: Newborn livestock such as calves and foals require special nutrients which are contained highly of in the first servings of the mom's milk.
Answer:
True
Explanation:
Newborn livestock will need lots of Vitamins like Vitamin A and will need 6-mo supply.
ribosomes fuse with food vacuoles and release digestive enzymes TRUE OR FALSE
what is life cycle in simple definition
Answer:
is the corse of event that bring new product into exstence and follow its growth into mature product and evential critical mass or decline
Does anyone know how Analogous structures and Vestigial Structures are similar?
Answer:
En resumen, estructuras análogas son aquellas que poseen una función semejante partiendo del mismo medio, pero cuyo origen es diferente. Si dos estructuras tienen la misma función por medios semejantes y además parten del mismo origen, son estructuras homólogas.
Explanation:
Can someone please help me
Answer:
It does not tell you the exact age of something.
Blood is a connective tissue composed of red blood cells, white blood cells, and blood platelets. Why is it that we can see blood cells only with a microscope? Question 21 options: The cells form clumps.
The cells keep moving about.
The cells have different shapes.
The cells are very small in size.
The cells are very small in size.
That's what I would say.
What is the most common way for flowering plants to reproduce?
Answer:
As far as I know, pollination is the most common way for flowering plants to reproduce.
Answer:
Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. The anther is the part of the stamen that contains pollen. This pollen needs to be moved to a part of the pistil called the
Explanation:
Hope it helps!
What is Environment Secretary?
Explanation:
refers to carbinet secretary for food, rural affairs and environment
Answer:
The Secretary of State for Environment, Food and Rural Affairs. This is important in a society.
plz mark me as brainliest.
Question 1 (1 point)
(07.02 LC)
Dan wants to arrange his red, blue, and green bags in a row on a shelf. Which tree diagram best shows the sample space of all the possible ways to arrange the three bags in a row on a shelf, where R is red, B is blue, and G is green? (1 point)
a
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to R. In the second row, the lines branch out from B to R to G and from B to G to B. In the last row, the lines branch out from G to R to B and from G to B to R.
b
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to B and from R to G to B. In the second row, the lines branch out from B to R to B and from B to G to R. In the last row, the lines branch out from G to R to B and from G to B to R
c
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to B. In the second row, the lines branch out from B to R to G and from B to G to B. In the last row, the lines branch out from G to R to B and from G to B to G.
d
A tree diagram is shown. The lines branch out to R, B, and G. In the first row, the lines branch out from R to B to G and from R to G to B. In the second row, the lines branch out from B to R to G and from B to G to R. In the last row, the lines branch out from G to R to B and from G to B to R.
please help ill mark brainlest
Answer:
I've done this one before it's B
Answer:
B
Explanation ;p
How do you calculate the width of a cell?
Answer:
all i know is you have to use math
Explanation:
Answer:
With a CALCULATOR there is a math calculator or you can also use socrative