Answer:
Your answer is the following...
(b)"Many valence electrons are shared between the atoms"
Explanation:
1.false
2.true
3.true
4.true
5.false/not entirely sure
6.true
Yes that's correct. Also zeros in between non-zero numbers are significant figures
Answer:
Two arguments or lines of evidence in support of the geocentric model are:
Geocentric model: This model describe that the earth is in the center of the universe and all the planets. Moon and the sun are revolved around the earth. This model explained the predominant description.
Heliocentric model: In this model the earth and the sun are consider moving and the sun are in the center of the solar system. And the sun is at the center position where all the planets are revolving around it, being dissimilar to the geocentric model.
Answer:
a = 2.77 [m/s²]
Explanation:
To solve this problem we must use the following equation of kinematics.
where:
Vf = final velocity = 19 [m/s]
Vo = initial velocity = 44 [m/s]
a = acceleration [m/s²]
t = time = 9 [s]
Note: The negative sign in the above equation means that the train is decreasing its velocity.
19 = 44 - a*9
9*a = 44 -19
a = 2.77 [m/s²]
