Recent content by bcheero

How do I do this problem. I think you have to use this formula L1/L2 = 2.512^(M2-M1) and then see the relationship with the Stephan Boltzmann Law. I keep getting an answer of 0.1 based on the ratio, but it's not making any sense. Here's the question. Star P is a pulsating variable star. As...

Excuse me for my lack of knowledge regarding this, so you're saying that it'll stay at 9V. AH I see now. When wiring something in parallel, the total voltage stays the same. So in effect, the motor will still be running at 9 V. Feel free to correct me if I'm wrong with the physics behind this.

Wow, thank you very much. I really appreciate the help! Also, can you tell me how to change the voltage on this DC motor? http://www.radioshack.com/product/index.jsp?productId=2102827 The device that I'm using to power should have a maximum of 12 V, but this motor can go to 18 V. I can't let...

Hey everyone. I'm a beginner when it comes to making stuff with motors and batteries. Could anyone give me a link or a very good explanation on how to wire a 9 volt DC motor to 2 9V batteries (that are supposed to be wired in parallel) to power a propeller? I have the motors and the batteries...

Hey everyone. I'm a senior in high school and need some serious guidance for my future major and job. I can say that I'm a very good student, academically, yet I lack the passion for anything right now. I want my knowledge to be powerful, on a level where it impacts the world. There are very...

Is it always true that the domain of f(g(x)) is the intersection of the domains of f(x) and g(x)? I've been having trouble with this and this answer would make me fully understand this concept. Thanks to everyone!

I considered your scenarios and this is what I have: X ≥ 1 , X< -1/3, and -1/3 <X<0

You have a very responsive community here! So if I fix the error that you pointed out, will my solution be correct?

Homework Statement -3<(1/X)≤ 1 Solve. Homework Equations The Attempt at a Solution Here's my attempt at it: (1/X)≤1 and (1/X)> -3 X≥ 1 and X> (-1/3) Am I doing something wrong here? Is this the complete solution? Looking at my answer, is there more that I...