<h2>
Hello!</h2>
The answer is A. the principal energy level
<h2>Why?</h2>
The principal energy level or principal quantum number n, tell us about the position of an determined electron in the energy levels relative to the greater average distance of an electron from the nucleus, the larger the value of n and the higher its energy.
The principal energy levels contains n sublevels, 
orbitals and 
electrons.
For example, the number 1, has one orbital which is contained in a energy sublevel, its called s orbital, and it's just an orbital with 2 electrons.
Have a nice day!
Answer:
F = 5000 [N] or 5 [kN]
Explanation:
In order to solve this problem we must take into account Newton's second law, which tells us that the sum of all forces applied on a body must be equal to the product of the mass of the body by its acceleration.
F = m*a
where:
F = force [N]
m = mass = 1000 [kg]
a = acceleration = 5 [m/s^2]
F = (1000*5)
F = 5000 [N] or 5 [kN]
Answer:
Speed and direction affect pitch.
a) We use the formula:
T = [g sinθ – a] * m
where g is gravity, θ is the angle, a is acceleration, m is mass
T = [9.81 sin37 - 2.00] * 12 = 46.85 N <span>
b) We use the formula for moment of interia:</span>
I = T * r² / a
I = 46.85 * 0.10² / 2.00 = .2343 kg∙m² <span>
c) The formula we can use here is:</span>
w = α * t = (a/r) * t
w = (2/.10) * 2
<span>w = 40 rad/sec</span>
The answer is <span>b. 6.1 times as long
</span>
Step 1: Calculate the time <span>it takes objects to reach a speed on the Moon.
</span>Step 2: Calculate the time it takes objects to reach a speed on the Earth.
Step 3. Divide the time on the Moon by the time on the Earth.
Use the formula: v2 = v1 + at
v2 - the final velocity
v1 - the initial velocity
a - gravitational acceleration
t - time
Step 1.
Moon:
<span>v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 1.6 m/s</span>²
t = ?
______
v2 = v1 + at
10 = 0 + 1.6t
10 = 1.6t
t = 10/1.6
t = 6.25 s
Step 2.
Earth:
v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 9.81 m/s²
t = ?
______
v2 = v1 + at
10 = 0 + 9.81t
10 = 9.81t
t = 10/9.81
t = 1.02 s
Step 3:
6.25 s / 1.02 s = 6.1 s
