Recent content by Mantikore

I missed this the first time around, but I am not. Like I said in my OP, I wanted to use the rate of expansion as my rate of acceleration for my science fiction idea. I'm not saying that they are the same, just that I want to use the rate of expansion to play around with. That's why I wanted to...

There are 9,461,000,000,000 km in a light year, how is that dimensionless? If you can calculate the rate of expansion by megaparsec, there is no reason you can't do it other ways. The rate of expansion between 2 objects 1 megaparsec away from one another is 70 km/sec. For 2 objects that are 2...

Omg.. ok.. I will show you step by step. The rate of expansion is 70 km/sec/megaparsec. There are 3.26 million light years in a megaparsec.. so divide 70 by 3.26 million and you are left with 0.00002147239263803680981595092 km/sec/light year. There are 9,460,731,000,000 km in a light year, so...

The Hubble constant is about 70 km/sec/megaparsec. So something one megaparsec away will be expanding away from us at the rate of 70 km/sec. Something that is 2 megaparsecs away will be moving away from us at a rate of 140 km/sec. 10 megaparsecs, it'll move away from us at a rate of 700 km/sec...

So I am having trouble with a problem.. and this has been a thorn in my side for quite some time now. I am working on a science fiction idea where I use the rate of expansion of the universe as the rate of acceleration of a spaceship. The rate of expansion is about 70 km/sec/megaparsec.. and I...

That's what I say, but I was told that according to.. well physics.. and assuming a uniform surface on the road, anything you run over on the road will either decrease your forward momentum or increase your fuel consumption to maintain your forward momentum. I don't think that is true because...

But will that resistance be guaranteed to increase fuel consumption, even if it is an immeasurable amount? What if you were driving on a road that was smooth as glass and all the other factors remained constant.. then you ran over a single grain of sand. Would that single grain of sand cause a...

My question is, if all the conditions remained stable.. even the air resistance, would there be an increase in fuel consumption? Think of it like a thought experiment. You are driving down a road where the road is perfectly uniform, the air resistance is the same, the rolling resistance, tire...

I know to find the time it takes to travel a distance, you divide the distance by the speed.. but what if you have an increasing speed? Say I wanted to travel 5 miles.. and I start off at 0 mph and by the time I reached the 5 mile mark, I would be traveling at 40 mph and there was a steady...

A question in regards to rolling resistance. Am I wrong in thinking that not everything you hit on the road with your tire effects your gas mileage? Don't tires have a tolerance in terms of how much energy they can absorb before it effects your traction, therefore effecting your gas mileage...

I might still do it.. lol, cause I looked on Google and YouTube and couldn't find any information or videos of a car running over a coin. I know that I've found coins on the road that were all banged up, but never saw a car hit a coin and am now curious as to what will happen. I want to see how...

Sorry if I sounded like I wanted you to do all my work.. on work. It's something that I've been pondering on for a lil bit now and have thought it out as much as I could.. and I am certain that there is work. I kind of feel dumb for not thinking about it sooner, but I am just going to do an...

Honestly, as much detail as you see fit.. but I am more curious about the tire itself. For the quarter itself, assuming it doesn't move.. wouldn't there still be a minute amount of compression from the weight of the car? If the quarter were secured to one location and you drove over it again and...

I have a question about work. In a lil debate over something related to work.. and my question is, if a car runs over a quarter laying flat on the ground, will the quarter being doing work on the tire? I say yes.. because when the tire rolls over the quarter, it is putting force on the quarter...