Answer:
Explanation:
When 238U which is radioactive turns into 206Pb , it becomes stable and no further disintegration is done . Hence in the initial period ratio of 238U undecayed and 206Pb formed will be very high because no of atoms of 238U in the beginning will be very high. Gradually number of 238U undecayed will go down and number of 206Pb formed will go up . In this way the ratio of 238U and 206Pb in the mixture will gradually reduce to be equal to one or even less than one .
In the given option we shall calculate their raio
1 ) ratio of 238U and 206Pb = 5
2 ) ratio of 238U and 206Pb = 4
3 )ratio of 238U and 206Pb = 1
4 ) ratio of 238U and 206Pb = 20
5 )ratio of 238U and 206Pb = 3
lowest ratio is 1 , hence this sample will be oldest.
Ranking from youngest to oldest
4 , 1 , 2 , 5 , 3 .
Answer: buried feelings in the unconscious
Explanation:
Sigmund Freud was a neurologist and I sometimes referred the as the person who found psychoanalysis. He came about therapeutic techniques that involved making use of strategies whn dealing with talk therapy.
Sigmund Freud believed mental disorders were caused when an individual buried feelings in the unconscious.
The energy which is possessed by an object because of its motion is called Kinetic energy.
Example:
- Wind mills. Energy is formed by the motion of wind mills, so it is kinetic energy.
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The energy which is possessed by an object because of its position is called Potential energy.
Example:
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<h3>Hope it help you</h3>
Answer:
Part a)
Part b)
Explanation:
Part a)
Force on the object due to spring force is given as
here we know that
so we have
Part b)
Acceleration of the object is given as
If you wanted the laser to refract less as it exits the prism, you should increase the wavelength of the light.
<h3>What is
refraction?</h3>
Refraction can be defined as a phenomenon which describes a change (bend) in the path taken by light when it's at surfaces between different transparent materials.
According to the model of light wave, the refraction of light is inversely proportional to its wave. Thus, you should increase the wavelength of light, if you want the laser to refract less as it exits the prism.
Read more on refraction here: brainly.com/question/15838784
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