Answer:
Hello there. I know its too late, but you could use one of your scientific experiments you did over the past few years.
You could make an solinoid.
Hope this helps! Lol
This is more along the lines of "Does gravity affext potential energy"
Sort of. Potential energy is an odd one to imagine, sometimes.
It's the energy possessed by an object or system by dint of it's spatial
and mechanical configuration.
That definition alone is perhaps not so useful...and it's certainly not
official. But what it means is that an object can potentially have
energy due to where it is or what state the system is in.
Imagine we have a box and it's on the floor. The box, for all intents
and purposes, has no potential energy. It isn't going anywhere and it
just sits on the floor. It can't do any work in it's current position.
Now we hoist the box into the air. For any distance the box travels from
the floor, it gains potential energy. Now let's back track. We've
changed the box's spatial configuration by hoisting it into the air and
so have given it potential energy.
Why does it now have potential energy? Because we can now drop the box
(costing us no energy) and the box will fall. Maybe it falls onto a
passer-by and injures them.
Box on the floor = No energy.
We lift the box = We spend our energy and give the box potential energy
(as it wants to fall toward the ground).
We drop the box = Potential energy is converted to kinetic energy as the
box falls.
Box injures someone = The kinetic energy has done work upon the person.
So we can see how it all flows and connects. We have to put energy into
the box to fight against gravity, but you can't destroy or create
energy....so the energy we've spent is potentially stored 'inside' the
box.
Clearly, gravity effects a LOT of potential energies around us. In fact
to some small extent, it's probably impossible to entirely avoid it's
effects.
I want to say it's the second one because the crest's of the wave are further apart then the rest.
Answer:
Average velocity will be 58.181 m/sec
Explanation:
Distance between station A and station B = 1188 meters
As the train starts from station A its initial velocity u = 0 m/sec
Final velocity is when it reaches at station B is 20 m/sec
Acceleration 
From first equation of motion 
20 = 0+2.41×t
t = 8.298 sec
Now from station train began to deaccelerate and finaly stop so final velocity v = 0 m /sec
Initial velocity u = 20 m/sec
We know that v = u+at
Deacceleration 
So 0 =20 -1.65×t
t = 12.12 sec
So total time = 8.298 + 12.12 = 20.419 sec
So average velocity 
So average velocity will be 58.181 m/sec
