Why does a lunar eclipse last for a few hours whereas a solar eclipse only lasts for a few minutes? Select one:

a.
The moon takes more time to travel through the earth’s umbra.

b.
Because the moon is moving much more slowly than the sun.

c.
Solar and lunar eclipses actually last about the same time.

d.
Because the sun is stationary and the moon is moving.

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current