Answer:
Half life of the sample, 
Given:
Initial amount, N = 1679
Final count of amount, N' = 1336
Time elapsed, t = 4 min = 240 s
Solution:
Now, To calculate the half life, using the relation:
Now, substituting the given values in the above mentioned formula:
Taking log on both the sides:
ln(0.796) = \frac{4}{t_{\frac{1}{2}}}ln(0.5)
Answer:
The angle is 
Explanation:
From the question we are told that
The length of the wire is 
The current is 
The magnetic field strength is 
The magnitude of the magnetic force is 
Generally the magnetic force exerted on the wire is mathematically represented as
Making 
the subject
![\theta =sin^{-1} [ \frac{ F_b }{I * l * B } ]](https://tex.z-dn.net/?f=%5Ctheta%20%3Dsin%5E%7B-1%7D%20%5B%20%5Cfrac%7B%20F_b%20%7D%7BI%20%20%2A%20%20l%20%20%2A%20%20B%20%7D%20%5D)
substituting values
![\theta =sin^{-1} [ \frac{ 0.18 }{ 2.0 * 0.6 * 0.3 } ]](https://tex.z-dn.net/?f=%5Ctheta%20%3Dsin%5E%7B-1%7D%20%5B%20%5Cfrac%7B%200.18%20%7D%7B%202.0%20%20%20%2A%20%20%200.6%20%20%2A%20%20%200.3%20%7D%20%5D)
The oxygen will flow out of the tire,
which causes the tire to become flat.
The lytic cycle is one of the two phases of reproduction in viruses. In this part of reproduction, the viral RNA joins with the DNA of the host and copies itself into the host's DNA pattern. This will cause the host cells to reproduce the viral cells instead of the original host cells. Overtime as the viral cells continue to reproduce they will overload and eventually cause the host cell to explode. When this occurs, then the produced viruses will continue on to infect the next cell.
1. The correct answer is B. The nebular theory states that the solar system is the result of the collapse, for unknown reasons, of a large, thin cloud of dust and gas. After this collapse<span>, the pockets of gas and dust started gathering into denser regions. As these regions collected more and more matter, they started to rotate, which led to the accumulation of a big ball in the </span>center<span>, the Sun, and </span>flattenedmatter around, the protoplanetary disc. Then the planets got formed by the accretion of this disc, which eventually created the planets.
2. The correct answer is D. The terrestrial<span> planets were formed by </span>accretion<span> of material that was denser in its constitution. This is the reason why they remained closer to the sun - they were heavier than gas, that is the material the Jovian planets are mostly made of.</span><span />
