Answer:
A. Fluorine
Explanation:
This is because it has the smallest atomic radius.

Answer:
a = 0.8 [m/s²]
Explanation:
To solve this problem we must use Newton's second law which tells us that the resulting force on a body is equal to the product of mass by acceleration, in this way we come to the following equation:
∑F = m*a
where:
F = forces applied [N]
m = mass = 1000 [kg]
a = acceleration [m/s²]
Now using Newton's second law.
![1200 - 400 = 1000*a\\800 = 1000 *a\\a=0.8[m/s^{2} ]](https://tex.z-dn.net/?f=1200%20-%20400%20%3D%201000%2Aa%5C%5C800%20%3D%201000%20%2Aa%5C%5Ca%3D0.8%5Bm%2Fs%5E%7B2%7D%20%5D)
Answer:
0.5232
Explanation:
the cardinal and the baseball has the same kinetic energy


![[4.0X 10^{-2} ]v_{c} ^{2} = [0.146]v_{b} ^{2}](https://tex.z-dn.net/?f=%5B4.0X%2010%5E%7B-2%7D%20%5Dv_%7Bc%7D%20%5E%7B2%7D%20%3D%20%5B0.146%5Dv_%7Bb%7D%20%5E%7B2%7D)


Ratio of momentum


Answer:
Vy = 26 m/s sin 30 = 13 m/s vertical speed
t = Vy / a = 13 m/s / 9.80 m/s^2 = 1.33 sec time to reach Vy = 0
H = Vy t + 1/2 g t^2
H = 13 m/s * 1.33 sec - 1.33^2 * 9.8 / 2 m = 8.62 m
While we think and feel that we are touching, we actually are not(: It’s all an illusion made by the brain