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AURORKA [14]
2 years ago
14

The half-life of a radioisotope is 6.0 hours. Approximately how long will it take for the activity of a sample to be reduced by

98%?
Physics
1 answer:
DerKrebs [107]2 years ago
3 0

Answer:

1 hours will be the best answer

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List the three types of symbiotic relationships. For each type of symbiotic relationship, explain how the two organisms are affe
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<span>The three major types of symbiosis are mutualism, where both species benefit, commensalism, where one species benefits and the other is unaffected, and parasitism, where one species benefits and the other is harmed. Symbiotic relationships can occur within an organism's body or outside of it.                                                                                                                                                                              </span><span>Examples of mutualism include the relationship between single-celled organisms or animals that incorporate algae into their bodies. They give the algae necessary nutrients, and in return receive chemical energy from the photosynthetic algae. Animals that have this sort of relationship include some sponges, sea anemones and clams. Examples of commensalism include remora fish attaching to the bodies of sharks and eating scraps of food that escape their jaws, and barnacles living on the jaws of whales with a similar feeding strategy. Plants have commensal relationships as well, such as many orchids that grow on taller plants and benefit from the additional sunlight they obtain, without actually stealing nutrients from the host plant. Parasitic relationships are many, and parasites include all disease-causing organisms. This category also includes insects such as fleas that suck the blood of hosts externally. Parasitism is a very efficient strategy for organisms, and parasites often lose many of the features of non-parasitic life forms, instead relying on their hosts for many of the functions of life.</span>
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2 years ago
Can someone help me pls
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4 0
3 years ago
What is the meaning of critical angle in physics​
bonufazy [111]

Answer:

It's an Angle of incidence that provides a 90° angle but is also refracted at the same time. it's used to find the water-air boundary (which is 48.6 degrees). in addition, its an angle of incidence value.

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3 years ago
The glowing of a neon light is caused by electrons emitting energy as they
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2 years ago
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An archeologist on a dig finds a fragment of an ancient
marin [14]

Answer:

19792.96488 years

Explanation:

\tau_{\dfrac{1}{2}} = Half life of carbon-14 atom = 5730 years

Disintegration is given by

\lambda=\dfrac{ln2}{\tau_{\dfrac{1}{2}}}\\\Rightarrow \lambda=\dfrac{ln2}{5730}\\\Rightarrow \lambda=0.00012\ /years

The distintegration constant

0.093N_0=N_0e^{-\lambda t}\\\Rightarrow 0.093N_0=N_0e^{-0.00012 t}\\\Rightarrow ln\dfrac{1}{0.093}=0.00012t\\\Rightarrow t=\dfrac{ ln\dfrac{1}{0.093}}{0.00012}\\\Rightarrow t=19792.96488\ years

The age of the basket is 19792.96488 years

4 0
3 years ago
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