> Why do some cars have an engine in the front and others in the back?

Mass distribution and the torque that can be generated on a driveshaft depending on whether the drive wheels are at the same end as the engine or the opposite end. Mass distribution affects stability and control, just like it does with a plane, like I said.

Yes, all of airplane design can't be explained in a reddit comment. Center of gravity, lift, and the tail force to control the plane are the reasons for choosing the engine location on a plane. Otherwise an unbalanced plane is difficult and dangerous to fly, with unstable recovery modes. The center of gravity, center of lift, and the forces applied by the control surfaces have to be balanced to fly the plane with stability. Large, heavy engines are usually placed near the center of mass of the plane. Engines placed elsewhere have to be balanced in other ways to keep the whole plane level and well controlled.

> Well... Why? What design requirements dictate the specific design choices?

Similar ones. For a car, engine, and tire size: power, fuel consumption, grip, suspension, stability, cornering, ride comfort, cost.

I already listed some flight requirements that dictate design choices for a plane:

> amount and location of weight, payload, thrust, control, and other flight characteristics

Because different airplanes are designed differently to account for amount and location of weight, payload, thrust, control, and other flight characteristics to achieve different goals or make different trade-offs, just like how everything is designed.

Why doesn't every car look the same, have the same engine, and use the same tire size?

Yes, credit utilization is how much of your credit you are using. If you bought something you haven't paid for yet, then you're utilizing your credit. They don't only report it on your billing date or after you pay it off. Someone maxing out their credit card is seen as a higher risk for non-payment.

If you can, use less of your limit until you can increase your limit.

Yes, I know. OP's title mentions 911, so I used 911.

No, OP confused their question. Both lack of signal and lack of a subscription are a lack of "service" at a particular time when trying to complete a call.

You don't. When you don't have service, you don't call anyone. Maybe you can call 911 on someone else's phone that has service.

EDIT: If by "service" you mean you don't have a paid subscription, then the carrier provides 911 calls for free anyway by law. If you mean you don't have service because of lacking signal, then you can't call 911. Both are a lack of service.

> I went to update my W4

> "If you don't complete this form, your employer is required to withhold income tax at the highest default status".

You can't "update" a form that you've never filled in before, so which is it?

It would also depend on what kind of income you receive, what your deductions and adjustments are, and what kind of employee you are.

Exactly. I wasn't referring to its looks, I was referring to its ability to hold hot water and people more than a few times.

No, it sounds sketchy so far. But maybe the "details" would make it better. Depends on your plan and how you're going to build it. If you essentially recreate a real hot tub, then it should be fine. But not if you think pallets and a tarp make a hot tub.