A solid, a liquid or a gas.
Answer:
C. Fe will stay positive and increase in magnitude.
Explanation:
Coulomb's law states that the force of attraction of repulsion between two charged particles is directly proportional to the magnitude of their charges and inversely proportional to the square of the distance of separation between them.
This means that if the size of the charges are large, the force acting on them will be large as well. Also if the distance between the two charges increases the force decreases. However, the force increases when the distance of separation decreases.
Like charges repel, therefore, two negative charges brought together will repel each other, and the distance between the two charges decreases, the force will increase in magnitude. Forces of repulsion are considered positive, therefore, the force, Fe, will stay positive and increase in magnitude.
Answer:
Speed
Explanation:
Because That's how fast the Car is traveling.
<h3>
Answer:</h3>
0.0488 g
<h3>
Explanation:</h3>
We are given
The radioisotope Fluorine-21
Half-life is 5 seconds
Initial mass of Fluorine-21 is 200 g
Time = 1 min or 60 seconds
Required to determine the New mass after decay
- We need to know that half life of a radioisotope is the time taken by a radioactive isotope to decay by half the original amount.
- To calculate the remaining mass after decay we use the formula,
New mass = Original mass × (1/2)^n , where n is the number of half lives.
In this case, n = 60 s ÷ 5 s
= 12
New mass = 200 g × (1/2)^12
= 200 g × 1/4096
= 0.0488 g
Therefore, the mass of Fluorine-21 remaining after 1 minute is 0.0488 g