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I'm not sure where air comes into play for problem one. There's no "air" factor in the gravity equation. F=GM₁M₂/(r^2)

But yeah, by definition, you need to use the equation to get the 20pi answer...

Having worked at Walmart doing oil changes, and another tire/lube place, I wouldn't say it's super easy to do on your own, especially with newer cars. Most newer cars have a a large skid plate that is a pain in the ass to remove. Ford makes their especially difficult as the skid plate is full, so if you are working in a pit, it's very hard to get to all the screws (usually Torx bits)... Many others are using skid plates under the car too, though many have access panels to the drain plug area and the oil filter area (oddly enough one of them, I think it was Mazda, had an access panel for the oil filter, but it was flipped as if installed backwards, but then the drain plug panel wouldn't be correct, so very odd design for awhile)... Sadly most of them seem to be moving to full skid plates as well. My favorites were the GM Ecotech type, where it has a canister filter near the top, drain the oil, open the canister (tool is cheap enough too), close the drain, replace the filter, tighten everything up and add 5 qts (though one of them took a slightly different amount).

That said, if you don't mind crawling under the car on a ramp, it isn't overly difficult. It is a very simple process.

I've learned from working those places. Ford's full skid plates suck, and sadly they seem to be joined by others. (Skid plate is apparently required for proper cooling, and I'd guess it also helps improve gas millage). Chrysler tends to strip, both the pan and the nut... Chrysler also has a long standing problem with lug and lug nuts.... GMs are okay for that sort of stuff (oil, tires, etc)... I didn't like doing tires on European cars as they use that odd lug stud instead of a lug/nut combo, which makes for a pain in the ass to remove and put the wheel back on the car (I can't imagine having to do that in the rain or snow on the side of the road, lug/nut combos makes so much more sense). Toyota can be a pain in the ass as they are moving to a thing that requires a very special custom cup to remove the filter housing...

EDIT to add: I also didn't know anything when I first started at Walmart... the advantage there over the other place was no upselling other services. Now if a car required Synthetic (newer GMs a few Toyotas mostly) then we would have to sell that oil change rather than the cheaper one for liability reasons, but we didn't check all the other stuff and didn't care... now if we say something dangerous we'd let the owner know, but otherwise... Now the other place we did check the other fluids and the managers would try to upsell services.

*spammer

@Lounge
GMS Software Solution
https://www.youtube.com/watch?v=q340uN_QzsA&feature=youtu.be

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You are so stupid. George 43 spent like a Democrat but was a far better leader. At least he Led. Obama leads from behind, buried us with another 10 Trillion in debt, failed miserably on foreign policy and is a total loser domestically.
The only positive of his presidency is bring out the gays and bailed out GM ( well its unions).

His 6 budgets that he presented got less than 10 votes total. TOTAL. How fucking off base with America to only get 10 votes out of 600 total for all the years. In 2014 Senate rejects Obama budget in 99-0 vote. That's dismal

Many of the "richest families in America" got to be that way because their businesses received subsidies and/or other crony favors. This is an undesirable situation for anyone (besides the cronies and politicians/bureaucrats, themselves). It's better to have wealthy families that are "wealthy" because their businesses deliver quality and service, not because they happen to be cronies.

Businesses that subsist because of cronyism (like the countries' largest banks, for example) should, in fact, collapse... Like GM should have collapsed back in 2008.

And all state subsidies should end.

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Here's a liberal hero: Michael Moore. Speaking truth to power, taking it to GM or whatever. Loves Cuban healthcare.

Here's a liberal hero: Margaret Sanger. Abortionist, racist, wanted abortion for black babies.

Here's a liberal hero: William Ayers. Bomb maker, terrorist, intellectual.

Here's a liberal hero: Che Guevara. Murderer, revolutionary, fashion icon.

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I think it's more like if they would stop redistributing the wealth to themselves from their workers.

If they would stop being greedy f'tards, then more people would have money to buy the things that move the economy and nobody would need government aid in the form of food stamps and welfare (save those who are honestly mentally or physically unable to work).If you want to build an economy the keyword is "build". You don't build a house by building the attic first magically floating there, then the foundation and walls to get up to it, you start with a foundation, then walls. If the people at the bottom have money to do more than barely survive, they buy things that actually move the economy, they buy things at retailers, who need to hire more people; those people buy things which results in transportation and warehouses hiring more people, those people buy things; manufacturing starts hiring (if the rich f'tard didn't send those jobs overseas, which the conservatives blame on the government rather than the rich guy who sent the job overseas for some reason, it's not like the price of that shirt went down when they sent it overseas, they just pocketed the extra wealth for themselves) and those people buy even more expensive things.

Our right wing economy favors investors and large business over the needs of the vast majority. It doesn't matter how much GM stock investors buy and trade, GM won't make more cars and hire more people until enough people can buy cars.

As we slide more and more money from the people who actually spend money in the economy and make it move, to people who just horde and invest, the economy will continue to spiral down. More and more people will require food stamps and welfare due to the actions of the rich, but the conservative right will blame the workers and former workers rather than pushing blame onto the people who are refusing to pay living wages, who push jobs overseas so they can personally pocket more wealth, and complain about the people they aren't giving living wages to and the people they laid off need government assistance, and the conservative voters go right along because the pulpit and Fox News has brainwashed them into believing that a party that disobey's everything their Jesus taught them is the Christian party.

The growing wealth and income gap is the biggest challenge facing our nation, and indeed much of the world. Of course most of the rest of the world does a better job of caring for the work force than the US does, paid maternity leave in all but 4 nations, paid vacation time in most of the world by law, paid sick time in most developed economies, minimum wages tied to inflation in much of those countries, a minimum level of health insurance for every man woman and child without having to buy from for-profit corporations (most actually use a single payer, which sort of ignores the fact that our individual mandate that we have now was invented by the Republican party, and is financed the same way they wanted to do it and the tax penalty for not participating is the same...the other nations that use individual mandates do so via not-for-profit insurance)... We do so much to protect the rich and investor class in this nation... sickening really.

Comment hidden because you are ignoring dag. (show it anyway)

Well, I guess I'm one of those niggers, because my banning finger is getting itchy.

Look, Gorillaman has been here long enough that I know he doesn't honestly believe this - (correct me if I'm wrong GM) however language matters here and I would ask you to refrain from racial epithets in comments. This is an official warning, blah blah, next comes banning.

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