Recent content by epicbattle

Ah hah, thank you. [2pi/Days(Earth) - 2pi/Days(Mars)]*180/2pi degrees per day. The 2pi cancels leaving the formula. Thank you. So .2311 degrees per day is relative angular velocity So how often are they diametrically apart 180/.2311 which solves for 779 days. Thank you very much. I won't...

Homework Statement Mars orbits the sun at a mean orbital radius of 228 Gm ( 1 G = 10^9 m) and has an orbital radius of 687 days. Earth orbits the sun at a mean orbital radius of 149.6 Gm. The earth-sun line sweeps out an angle of 360 during one Earth year. Approximately what line is swept...

...I feel silly. Thank you very much.

Homework Statement To avoid an accident, the driver of a 1000kg car moving 90km/h on a straight horizontal road steps o the brakes with maximum force. The car skids to a stop. The coefficient of kinetic friction between tires and road is 0.80. How far does the car travel during the skid...

Here is an update on this. I am going to a community college for Calculus 1. I'm considering this sort of a "test" course. If I do well in it (which I think I will, but I have never taken Calc) I will go ahead with a five year undergrad plan to get an ECE degree. I'm not married, nor do I have...

Yeah, why do they need to place plasma rockets in a vacuum? Temperatures? Air resistance from the particles? Is there any thrust at all in an atmosphere?

Here is a question for you guys. I have a Liberal Arts degree. I started on this path when I was young and stupid. Not that their is anything wrong with Liberal Arts. I'm very good at math, and have an obsession with Robotics. I have built three very simple Robots thanks to sites like...

I thought a good website was societyofrobots.com . He has a ton of tutorials including a how to build an autonomous robot for $50.

Here I made a quick sketchup of the way I want to setup the experiment. Maybe this will help with the kind of piezo device I need and where to better find it. The ones on Mouser and Allied were not the appropriate shape or frequency needed, but thank you...

Hello all, I'm just trying to find a distributor that will sell high frequency piezoelectric ceramics in a small quantity. There are a ton of distributors, but they want purchases in bulk. I'm just a lowly stage actor who has an idea, and I want to figure out a way to test the relation...