B. You should always use artificial lights while taking shots.
Answer:
The proton number is found in the periodic table of elements.
Explanation:
<em>The atomic number </em>is the number that defines each element in the periodic table. It accounts on the number of protons in a nucleus of an element, as well as the number of electrons. It is marked by the letter Z.
It should be distinguished from the mass number which is the total number of protons <em>and </em>neutrons inside a nucleus.
2x^2-2x-12=0
2x^2-2x=12 Move 12 to the other side
4x-2x=12 Use the square
2x=12 Combine like terms
x=6 Divide by the constant
Answer:
Luiz left home first, 10 minutes before arriving time.
Explanation:
We assume that both Luiz and Bianca left the homes and travelled at constant speed. The purpose of this problem is determining who left home first, which is related to time. From Kinematics, both can be represented by the following expression:
(Eq. 1)
Where:
- Travelled distance, measured in meters.
- Speed, measured in meters per second.
- Time, measured in seconds.
Then, times taken by each person is now calculated:
Luiz (, )
Bianca (, )
If both arrived at school at 8:55 AM, then Luiz left home at 8:45 AM. Luiz left home first, 10 minutes before arriving time.