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kakasveta [241]
3 years ago
14

Which statements about carbon-14 dating are true? Check all that apply. Carbon-14 decays into nitrogen-14. Carbon-14 has a longe

r half-life than potassium-40. Once a living thing dies, it no longer takes in carbon. Carbon-14 dating is used to date very old volcanic rock. Carbon-14 dating works for fossils as old as 50,000 years.
Physics
2 answers:
RUDIKE [14]3 years ago
7 0

Answer:

135

Explanation:

Anettt [7]3 years ago
3 0

Answer:

D

Explanation:

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Given (kg/s) (m/s) , what is the resulting unit?
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I think you mean for those fractions to be multiplied.
In that case, you get

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When a cell divides to help repair an organism, what type of cell division is it?
marin [14]

Answer:

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Explanation:

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4 years ago
OSCilloscope shows wave starts cycle minimum 20 units reaches max of 100 units before completing 5 milliseconds what is relation
Vitek1552 [10]

Answer:

T=0.02\ s

f=50\ Hz

Explanation:

Given:

  • minimum amplitude at the start of oscillation cycle, a_0=20\ unit
  • the first maximum amplitude after the start of oscillation cycle, a_{m1}=100\ units
  • Time taken to reach from the first minima to the first maxima, t=5\times 10^{-3}\ s

As we know that an oscilloscope executes a wave cycle represented by a sine wave. So we can deduce that it  has executed one-fourth of the cycle in going from the amplitude of 20 units to 100 units in 0.005 seconds.

<u>So the time taken to complete one cycle of the oscillation:</u>

T=4\times 0.005

T=0.02\ s is the time period of the oscillation

<u>We know frequency:</u>

f=\frac{1}{T}

f=\frac{1}{0.02}

f=50\ Hz

6 0
4 years ago
During the water cycle, solar energy causes water to change from a _____ to a ______.
tankabanditka [31]
Liquid to a gas hence the name water vapor 
3 0
3 years ago
Read 2 more answers
An a.c. supply is connected to a wire stretched between the poles of a magnet. Which way does the wire move?​
snow_lady [41]
The wire vibrates back and forth between the poles of the magnet.
The frequency of the vibration is the frequency of the AC supply.

7 0
2 years ago
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