Answer:
Explanation:
mass, m = 4.1 x 10^-6 g
Electric field, E = 466 N/C
Electric force = weight
(a) Electric force = q x E = m x g
where, q be the charge on the dust particle.
q x 466 = 4.1 x 10^-6 x 9.8
q = 8.62 x 10^-8 C
(b) Number of electron = charge / charge of one electron
n = 8.62 x 10^-8 / (1.6 x 10^-19)
n = 5.4 x 10^11
When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, volcanoes<span> erupt. Extremely high temperature and pressure cause the rock to melt and become liquid rock or magma. When a large body of magma has </span>formed, it rises thorugh the denser rock layers toward Earth's surface
Answer:
a) 
, b) 
, c) 
, 
Explanation:
a) The angular motion is obtained by integrating the angular acceleration function twice:
The angular motion when t = 2 s. is:
b) Let be 
the distance between A and the rotation axis, measured in meters. The magnitude of the angular velocity when t = 2 s. is:
Finally, the magnitude of the velocity is:
c) The angular acceleration of the disk when t = 2 s. is:
Lastly, the normal and tangential components at point A are, respectively:
Probably to the right because the force on the left is greater and will therefore overpower the 2N force and push to the right
