Recent content by bse

Ok sorry. I actually just wanted to know the equation, but i figured it out. thanks anyway

Ok i got it. It's because the distance from Mars to the sun is greater than from the sun to earth, creating a larger baseline.

[SOLVED] luminosity of the sun What equation do you use to figure out the luminosity of the Sun if you are given the amount of energy the Earth receives from it?

Is there advantage of measuring stellar parallaxes from Mars rather than from Earth? Would it be more accurate than from Earth? Thanks

Can two stars have the same apparent magnitudes but different absolute magnitudes? what about if two stars have the same absolute magnitudes but different apparent magnitudes?

What is the angular velocity of the sun? thanks

I'm trying to find the wavelength shift for light with a certain wavelength that is emitted from the sun. Is there a different kind of equation for light wavelength shifts?

Can anyone tell me what the doppler wavelength shift equation is? thanks

Right, I've been thinking about this, but I'm just not sure. Do you have an answer?

How can the earth’s orbital speed be determined from observations of the spectrum of a star? Thanks

How many molecules exist in one cubic centimeter of space at a pressure of 10^-15 atm and temperature of 20 degrees C?

Ok sorry, thanks a lot

Is the air in a room an ideal gas? How do you know this? How does this compare to the density of air at room temperature? thanks

What's the average speed of hydrogen molecules at room temperature and how do you figure it out? Is there an equation? thanks