Answer:
Net force on electron will be 
Explanation:
We have given that the orbit 
Speed of the electron 
Mass of the electron is given as 
Centripetal acceleration is given by 
Force is given by F = ma
So force 
Answer:
serial in which container is filled
Solid -base of container
Liquid- above solid
Gas- above liquid
Explanation:
If any mixture of matter in different state (that solid , liquid or gas )are kept in any container, then substance with higher density will be settled at lowest surface first and similarly the substance with lowest density will be at upper part of container.
In the given container we have to keep solid, liquid and gas
- sold has the highest density,
- gas the lowest density and
- liquid has the density higher than gas but less than solid.
based on this
solid will be at surface of container
above sold will be liquid
above liquid will be presence of Gas
serial in which container is filled
Solid -base of container
Liquid- above solid
Gas- above liquid
No problem, and you already know all about it.
Here are a few examples of same volume / different weight:
-- A bottle full of water is heavier than the same bottle when it's full of air.
-- Stones are heavier than styrofoam chunks the same size.
-- A bowl of meat loaf is heavier than a bowl of scrambled eggs.
In each example, two things have the same volume, but one weighs more than
the other. I didn't say anything about mass yet, but that's easy: As long as you
keep everything on Earth, more weight means more mass.
So how come, in each example, things with the same volume have different mass ?
This was your original question.
The answer is just the simple fact that there are millions of different substances, and
each different substance packs a different amount of mass into the same volume.
The amount of mass that a substance packs into a standard volume is called
the <em>density</em> of the substance. Meat loaf is more dense than scrambled eggs.
Stone is more dense than styrofoam. Water is more dense than air. And <em>gold</em>
is 19 times as dense as water. If you have a jar that holds a pound of water, and
you pour out the water and fill the jar with gold, the same jar holds 19 pounds of gold,
because the density of gold is 19 times the density of water.
The reason you were assigned to think about this question for homework is that
next time your Physics class meets, you'll start talking about <em>Density. </em><em /> And you're
all ready for it now.
