Physics pt. 9: Energy

 Kinetic energy is a type of energy that relies on mass and speed, to exist.

So let's say you roll on the ground a lightweight ball and a heavy ball, with the same force, the heavier one will roll faster since it has more mass. 

But if you roll the lighter ball with more force than the heavier one, the lighter one will move faster. 

The equation that we use is Ke = M* V^2
Ke means kinetic energy or kinetic energy is equal to Mass times Velocity squared.

Potential energy is energy that is stored in an object. And it has the potential to output that energy to say, Kinetic energy.

First is Gravitational Potential energy.
Let's take the earth for an example, lets put a yellow ball 50 feet in the sky, and another red ball 100 feet into the sky.
Which ball do you think will fall the fastest, well its the red ball because the red ball is further away and has more GPE or Gravitational Potential Energy 

The second is Elastic  Potential energy.
Let's use a rubber band as an example, if we pull on it, and when we let go, it will spring back to its normal position, but wait, why did it snap quickly and not slowly go back into shape, well Elastic Potential Energy. Another good example is a spring as when you compress a spring, it will try to "spring" back and cause the Elastic Potential energy, to happen.

Third is Electric Potential energy.
Which is an object that is electrically charged due to another charged object, which means that a positive charge and a negative charge is next to each other they attract. While two positive or two negative charges repel.

Forth and last one is Magnetic potential energy.
Magnetic potential energy is a type of energy that comes from the magnetic force of magnets, not only the position of the magnets matter (how near and how far they are). But also the orientation of the magnets affects the potential energy.

All these are potential energy. Potential energy, in summary, is an object's orientation, position, and the material it is made of. It is compared mainly using mass, size and shape.

Energy cannot just "disappear" as part of The Law of Conservation of Mass, "Matter is not created nor destroyed", so if one object loses its energy, another object but inherit that lost energy.

Energy can change forms, for example, if you were to use a blow dryer, it turns electrical energy into heat or thermal energy.
Or when a car speeds up too fast, the kinetic energy while driving is turned into thermal energy.
And when you hit the breaks on a bike, the breaks cause the wheels to stop and cause the tyres to produce heat because of kinetic energy and friction.

Quranic stories pt.17 by Sh Tariq Appleby

 Even if a deed is small and insignificant, it matters to Allah. As Allah knows all that is seen and unseen.

Allah will test you and will put you through turmoil. And he will show you many unenjoyable things. 

When you are seeking knowledge, do not take shortcuts. If you are really interested in seeking knowledge, then you take your notes, you look at them. Revise the notes.

Quranic stories pt.16 by Sh Tariq Appleby

 Luqman said to his son to pray and establish prayer. And encouraged his son to enjoy what is good and forbid evil. 

And he tells his son to be present when doing both. Enjoying what is good and forbidding evil. 

Do not turn your nose up to people and be arrogant and boastful. As Allah does not like that. 
Be humble and not full of pride.

Be moderate with pace, and lower your voice, as the ugliest voices are the baying of donkeys.

Also walk and speak without pride, as you can tell if someone is prideful in the way of walking, or speaking.

Quranic stories pt.15 by Sh Tariq Appleby

 Luqman was either a wise man.

Some say his occupation was a shepherd, carpenter and tailor.

One opinion was that He was an Abysian slave, or from Israel.

Wisdom and knowledge are different.
For example let's say there is an employee that doesn't arrive on time, to work.
The using knowledge is simple as the answer is to fire that employee.
But now let's say he's the best employee in the company, now it gets tougher as you need to consider that he is the best in his field. So instead you could say "You can arrive late, but, you must finish your work on time.

If someone has only bad deeds and no good deeds. It is still possible to be forgiven. But Shirk (associating partners other than Allah).  

Disbelief only harms the disbeliever.

Ismail's father was Ibrahim. And when Allah asked Ibrahim to sacrifice his son Ismail. And He said, "Go ahead and sacrifice me, father". And before Ibrahim was going to sacrifice his own son.

Luqman started by prohibiting his son from committing shirk.

Quranic stories pt.14 by Sh Tariq Appleby

You might be a place where people are openly sinning.

You might say "Why should I warn them of Allah's wrath, and the torment of hellfire?".

Well, one reason is that they might stop sinning for fear of Allah.
And our dakwah worked.

 Those who forbid evil and cherish good do not deserve punishment.

Those who do not speak out of sinners are not considered sinners themselves as long as you personally condone it is fine.
But if you speak out about it, you will be passed by Allah.

Quranic stories pt.13 by Sh Tariq Appleby

 If you say “I am going to do this tomorrow” you should say “Inshallah”.

Also, make an oath you can keep.

If you have a chance to good, then do it.

Continuing the story of the garden:

The brothers came up with the idea that they would keep the contents of the garden to themselves and not share it with anyone.

The sons cut the date trees at night to deprive the poor of dates in the morning. 

Then their garden got robbed who were sent by Allah to punish them.

Quranic stories pt.12 by Sh Tariq Appleby

 Indeed, We have tried them as We tried the companions of the garden when they swore to cut its fruit in the [early] morning.

Without making exception

So there came upon it [i.e., the garden] an affliction from your Lord while they were asleep.

And it became as though reaped

And they called one another in the morning,

[Saying], "Go early to your crop if you would cut the fruit."

So they set out, while lowering their voices,

[Saying], "There will surely not enter it today upon you [any] poor person."

And they went early in determination, [assuming themselves] able.

But when they saw it, they said, "Indeed, we are lost;

They said, "O woe to us; indeed we were transgressors.

Such is the punishment [of this world]. And the punishment of the Hereafter is greater, if they only knew.

Now once the father died, he would often feed the poor for free and they would come to his houses for food. and he passed he left behind three sons, and those sons did not follow in their father's footsteps of giving to the poor.

And the sons would take all the fruit from the plentiful garden, and not give it to the poor.

All things have consequences in this life or the next.

They made a conscious effort to not share the fruits with the poor.

Then Allah sent destruction on their garden, and when the sons saw their garden in ruins, they said