I think it's B ,go to physicsclassroom.com Newton's second law
Blood cell : Eukaryotic cell
and
Bacteria : Prokaryotic cell.
Your body continues to move unless stopped by the seatbelt. An object in motion will remain in motion. Since your body was already moving it will continue to.
If the distance between two charges is halved, the electrical force between them increases by a factor 4.
In fact, the magnitude of the electric force between two charges is given by:
![F= k \frac{q_1 q_2}{r^2}](https://tex.z-dn.net/?f=F%3D%20k%20%5Cfrac%7Bq_1%20q_2%7D%7Br%5E2%7D%20)
where
k is the Coulomb's constant
q1 and q2 are the two charges
r is the separation between the two charges
We see that the magnitude of the force F is inversely proportional to the square of the distance r. Therefore, if the radius is halved:
![r'= \frac{r}{2}](https://tex.z-dn.net/?f=r%27%3D%20%5Cfrac%7Br%7D%7B2%7D%20)
the magnitude of the force changes as follows:
![F'=k \frac{q_1 q_2}{r'^2}=k \frac{q_1 q_2}{( \frac{r}{2})^2 }=k \frac{q_1 q_2}{ \frac{r^2}{4} } =4k \frac{q_1 q_2}{r^2}=4 F](https://tex.z-dn.net/?f=F%27%3Dk%20%5Cfrac%7Bq_1%20q_2%7D%7Br%27%5E2%7D%3Dk%20%5Cfrac%7Bq_1%20q_2%7D%7B%28%20%5Cfrac%7Br%7D%7B2%7D%29%5E2%20%7D%3Dk%20%5Cfrac%7Bq_1%20q_2%7D%7B%20%5Cfrac%7Br%5E2%7D%7B4%7D%20%7D%20%3D4k%20%20%5Cfrac%7Bq_1%20q_2%7D%7Br%5E2%7D%3D4%20F%20%20%20)
so, the force increases by a factor 4.
Answer:
Buffalo, NY
Explanation:
Temperature in Buffalo, NY = -29°C
In order to compare the temperatures we need to convert them to the same scale.
![F=\dfrac{9}{5}C+32\\\Rightarrow F=\dfrac{9}{5}\times -29+32\\\Rightarrow F=-20.2](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7B9%7D%7B5%7DC%2B32%5C%5C%5CRightarrow%20F%3D%5Cdfrac%7B9%7D%7B5%7D%5Ctimes%20-29%2B32%5C%5C%5CRightarrow%20F%3D-20.2)
So, the temperature in Buffalo, NY was -20.2°F and the temperature in Anchorage, AL was 19°F.
Hence, it was colder in Buffalo, NY than in Anchorage, AL.