Answer:
For the first one, its B) cities B and C
I'm not so sure, but I hope this helps.
The net charge of the asteroid is
with a negative sign since it is a net negative charge.
The charge of one electron is
In order to find what is the excess of electrons on the asteroid, we must simply divide the net charge in excess on the asteroid by the charge of a single electron, and we find:
P 1 = 101,325 Pa (atmospheric pressure)
Milk has almost same density as water: (Rho)= 1,000 kg /m³
P 2 = 101,325 Pa + 1,000 kg/m³ · 9.81 m/s² · 0.1 m = 102,306 Pa
The hydrostatic equation:
P 1 + (Rho)v1² / 2 = P 2 + (Rho)·g·h2
101,325 + 1,000 v1²/2 = 102,306 + 1000 · 9.81 · 0.1
500 v 1² = 102,306 + 981 - 101,325
v 1² = 3.924
v 1 = √ 3.924
v 1 = 1.98 m/s
The initial velocity of outflow is 1.98 m/s.
Amplitude of vibration is the maximum displacement of an object that has been moved from one point to another due to a vibrating body or its wave measured from an equilibrium position. In short, it is the distance of the object that moved from the vibration.