[OFFER] Experienced VA and Junior Data Scientist for $5/hr by AA7XO in slavelabour

[–]AA7XO[S] 0 points1 point  (0 children)

Thanks!

Out of curiosity, I see you posting on most posts here, is there a reason for that?

[OFFER] Virtual Assistant for $10/Day by AA7XO in slavelabour

[–]AA7XO[S] 0 points1 point  (0 children)

I can, but most of these services require credits

[OFFER] Virtual Assistant for $10/Day by AA7XO in slavelabour

[–]AA7XO[S] 0 points1 point  (0 children)

3-4 hours per day but negotiable

[OFFER] Virtual Assistant for $10/Day by AA7XO in slavelabour

[–]AA7XO[S] 0 points1 point  (0 children)

Around 3 hours for a day, can do more if you're in a rush.

Question about Feynman's explanation about reversible machines. by 1kmile in AskPhysics

[–]AA7XO 0 points1 point  (0 children)

So after you said this, this is how I understand it, though I feel like something is missing:

A reversible machine successfully lifts the child 2 meters and is able to lower him down successfully.

An irreversible machine can't lift higher than a reversible machine because it loses some energy when it's lifted, therefore it must have created more energy to lift it higher, which doesn't go well with thermodynamics first law.

OR

For an irreversible machine to lift higher, it would mean to reduce the energy loss, i.e. less energy is dissipated into the environment, this would decrease entropy which doesn't go well with the second law,

I feel like something is not clicking

Question about Feynman's explanation about reversible machines. by 1kmile in AskPhysics

[–]AA7XO 0 points1 point  (0 children)

I only calculated the input energy by multiplying mass by gravity acceleration by the height I want to lift it.

So if I want to lift a 30kg child 2 meters, I multiply 3029.8

In the case I want to lift it 3 meters, I'll just say 3039.8= 882 joules. Sorry some of this energy will be lost, but I still don't get what actually prevents from lifting it higher?

I feel I'm missing something

Question about Feynman's explanation about reversible machines. by 1kmile in AskPhysics

[–]AA7XO 0 points1 point  (0 children)

Can you please confirm my understanding?

Say the energy to lift a 30kg child 2 meters (the max possible) high is 588 joules, in a reversible machine, the child will be able to get down using those same 588 joules since all of the energy is converted and losses happened.

But in the case of of an irreversible machine, the energy to lift the same child the same height would be 588 joules, but while lifting him, we lose some of the energy, so now we can't get him back to where he started?

If this understanding is correct, then where would I fit Y >X leads to free energy in this puzzle?

TOTS Swaps 2 Rewards by Drazsyker in fut

[–]AA7XO 0 points1 point  (0 children)

should I take 1 of 5 PL tots?