Definitely the first: the water molecule is polar. :)
Answer:
Yes, table
Yes, road
No
No, that would be a tension force
Yes, elevator floor
Yes, conveyor belt
Yes, force acts outward perpedicular to ramp surface
No
I would say because they have the same negative charge and they repel each other
Answer:
Angular displacement before it stops = 18 rev
Explanation:
Given:
Speed of fan w(i) = 6 rev/s
Speed of fan (Slow) ∝ = 1 rev/s
Final speed of fan w(f) = 0 rev/s
Find:
Angular displacement before it stops
Computation:
w(f)² = w(i) + 2∝θ
0² = 6² + 2(1)θ
0 = 36 + 2θ
2θ = -36
Angular displacement before it stops = -36 / 2
θ = -18
Angular displacement before it stops = 18 rev