It holds A. Less water than when it is warmer.
The time since the rock reached its closure temperature is 289.8 years.
When the rock was discovered, it would contain 4.375 g of Europium 151.
If the number of atoms of samarium 151 at its closure temperature is N₀ and if it had <em>N</em> atoms when discovered, then,
here, <em>n</em> is the number of half lives.
The mass of the isotope is proportional to the number of its atoms present in the sample. hence substitute 0.625 g for <em>N</em> and 5 g for N₀.
hence, the number of half live <em>n</em> is equal to 3.
If the half life of the isotope Samarium is 96.6 years, then the time that has elapsed from time it reaches its closure temperature and its discovery is given by,
Since Samarium decays to Europium, the mass of Europium at the time of discovery is equal to the mass of Samarium that has decayed.
The mass of Europium 151 at the time of discovery is given by,
Thus,the time since the rock reached its closure temperature is 289.8 years and when the rock was discovered, it would contain 4.375 g of Europium 151.
Answer:
The frequency would double.
Explanation:
Given:
Speed of wave (v) = constant.
Frequency of wave initially (f₁) = 2 Hz
Initial wavelength of the wave (λ₁) = 1 m
Final wavelength of the wave (λ₂) = 0.5 m
Final frequency of the wave (f₂) = ?
We know that the product of wavelength and frequency of the wave is equal to the speed of the wave.
Therefore, framing in equation form, we have:
Wavelength × Frequency = Speed
It is given that speed of the wave remains the same. So, the product must always be a constant.
Therefore,
Now, plug in the given values and solve for 'f₂'. This gives,
Therefore, the final frequency is 4 Hz which is double of the initial frequency.
f₂ = 2f₁ = 2 × 2 = 4 Hz
So, the second option is correct.
Answer:polarization pertains to the act or process of producing a positive electrical charge and a negative electrical charge such that between a nerve cell internal electrical charge..................
Explanation: