Answer:
<u>Uranium</u> atoms have 92 <em>electrons</em> and the <u>shell structure</u> is 2.8.
Explanation:
<u>Classification:</u> <em>Uranium</em> is an actinide metal
<u>Protons:</u> 92
<u>Neutrons in most abundant isotope:</u> 146
<u>Electron shells:</u> 2,8,18,32,21,9,2
<u>Electron configuration:</u> [Rn] 5f3 6d1 7s2
<em>PLEASE MARK BRAINLIEST!</em>
Answer:
Explanation:
Given:
Initial θ = 0 rad (from rest)
Final θ = 14.3 rad
Time, t = 5 s
B.
Angular velocity, w = dθ / dt
= (14.3 - 0)/5
= 2.86 rad/s
A.
Acceleration, ao = dw/dt
Initial angular velocity, wi = 0 rad/s (from rest)
Final angular velocity, wf = 2.86 rad/s
a = (2.86 - 0)/5
= 0.572 rad/s^2
Efficiency = Mechanical advantage / Velocity Ratio:
0.60 = M.A./6
MA = 0.6 * 6 = 3.6
The mechanical advantage is 3.6
Mechanical advantage = Force out / Force in
3.6 = 3000/ Force in
Force in = 3000/3.6
Force in = 833.33 N
Answer: 833.33N