Answer:
8.46 N/C
Explanation:
Using Gauss law
Gauss's Law states that the electric flux through a surface is proportional to the net charge in the surface, and that the electric field E of a point charge Q at a distance r from the charge
Here, K is Coulomb's constant whose value is
r = 0.43 + 0.106 = 0.536 m
A) A storage battery is charged using an electric current.
Answer:
The shorter train has a length of 600m
Explanation:
The equation of motion of the first train can be written as:
(1)
v' = 108km/h = 30m/s
Furthermore, you can write the equation of motion of the second train as:
= xo + vt (2)
v = 36km/h = 10m/s
where you have taken the initial position as measured from the front of the first train to the front of the second one. l is the length of the second train and 200 the separation of it respect to the first train.
For t = 40 both trains have the same position, that is, x=x'. Then, you equal equations (1) and (2), replace t=40, and solve the equation for l:
Hence, the first train has a length of 600 m
The train behind, or the second train, has twice the length of the first train:
The shorter train has a length of 600m
Answer:
The correct answer is from solid to liquid (melting), and from liquid to gas (sublimation).
Explanation:
In the solid-state the energy of the molecules is low, so the molecules will have very little movement. In the liquid state, molecules have a higher level of energy, and as they move from solid to liquid state they acquire greater mobility. In a gaseous state, the energy level is very high and the molecules have a higher degree of mobility.
This can also be described through the predominant molecular forces in each state. The cohesion forces present in solids are stronger than those of repulsion. In the liquid state, the repulsion and attraction forces are balanced. Finally, in the gaseous state, the repulsive forces between the molecules predominate.
Have a nice day!