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kifflom [539]
3 years ago
10

Increasing an objects speed by double will cause the kinetic energy to increase by how many times

Biology
1 answer:
Nataliya [291]3 years ago
4 0
4 times. It quadruples. 
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Countercurrent multiplication involves A) ions leaving ascending limb to make water come out of the descending limb B) water lea
Snowcat [4.5K]

Answer:

The correct option is A

Countercurrent multiplication is the process whereby energy is used to generate an osmotic gradient in which water is reabsorbed from the tubular fluid to produced concentrated urine.

Explanation:

Countercurrent multiplication moves sodium chloride from tubular fluid into interstitial space deep within the kidneys. The concurrent multiplication process build up osmotic gradient interstitial fluid in a single effect. Here, sodium chloride is driven by active transport out of the tubular fluid in the thick ascending limb into the interstitial fluid, which becomes hyperosmotic. This result to water moving passively down its concentration gradient out of the tubular fluid in the descending limb into the interstitial space to a point where it attains a state of equilibrium.

Therefore,the correct option is A, where the ions leaves the ascending limb to make water comes out of descending limb.

4 0
3 years ago
You are an archaeologist who has just found an ancient fire ring containing charcoal fragments. You send these fragments to the
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Answer:Thus we can conclude that these charcoal fragments are about 11460 years old.

Explanation:

a) for completion of half life:  

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}{5730years}=1.21\times 10^{-4}years^{-1}

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  = 100

a - x = amount left after decay process = 25

b) for completion of 75 % of reaction  

t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}

t=11460years

Thus we can conclude that these charcoal fragments are about 11460 years old.

4 0
3 years ago
From an evolutionary perspective, phobias are a result of __________ learning, which suggests that humans and other animals that
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Answer:

Phobia is a result of associative learning that suggests human and other animals to learn fear in certain threatening objects or situations.

Explanation:

Phobia is a psychological condition that defines any kind of fear which will appear from certain type of objects and it scares intensely.

Several learning experiences creates fear when the particular person is expose to that condition.

These include some associative learning that is related with behavior.

This type of learning is usually based on stimuli which is generated through positive or negative consequences.

This type of learning which create phobia contain classical conditioning, Operant Conditioning, Cognitive social conditioning etc.

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Answer:

A.  A=  or RNA, B= cell fuel and support, C= galactose and glycogen,

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What are the best keyboard switches?
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Explanation:

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