Recent content by aerogurl2

i don't really know. i just know thermal is heat and that's why the rock heats up.

I don't understand whether this is true or false. It goes like this: if a distant galaxy has a substantial redshift ( as viewed from our galaxy) then anyone living in that galaxy would see a substantial redshift in a spectrum of the Milky Way galaxy. I know redshift is when the object is...

hi guys, i am having trouble with a problem. it's as goes: if you heat a rock until it glows, its spectrum will be: (a) a thermal radiation spectrum (b) an absoprtion line spectrum (c) an emission line spectrum I think it's thermal radiation spectrum because it seems like the rock is...

hi, there's something that i don't understand in the following equation: p^2 = (4pi^2)(a^3)/G(m1+m2) is the p a distance measured from the center of the first object to the center of the second object? or is it just the distance between them, for example a satelitte dish is 300km above the...

Hi guys, i don't understand the momentum and velocity and when they say elasticity in the following question... What will happen when equally massive carts collide elastically with one another at equal velocity? What will happen when the collision is inelastic? I am very confused...

?? ma = GmM/r^2 so G, m and r are the same and only M is different because of planet's mass. so M = a. then a is greater on Earth because it's mass is greater then the moon. thus acceleration is different so rate of object is different .??

i thought orbital energy keeps it in orbit

i've seen the 2nd equation and know that it has somthing to do witht he universal law of gravitiation, but other then that i don't really know what it means.

I am having trouble understanding the concept of the effects on an orbit. The question asks if we replaced the sun with a rock of the same mass, would Earth's orbit change? I think it doesn't because orbits don't change because of its orbital energy. but I'm not sure because i wonder if the...

gravity is on Earth which is 9.8 m/s^2 which effects the force because f = ma. but there is no gravity on the moon. thus everything there is at a free fall. so the objects won't fall at the same rate as on the earth? am i on the right track?

Hi! This maybe a simple question that shouldn't be asked, but I don't know about it. So the question is "would you fall at the same rate on the Moon as on Earth? Explain" I think that the rate would be the same on moon and earth. i was thinking it had something to do with the universal law of...

Homework Statement Hi, i don't really know how I should go about this question. please help me. Question: Integrate the following equation: I = (integration sign from 0 to 2 sqrt3) (x^3)/(16-x^2)^(1/2) Homework Equations The Attempt at a Solution I tried to assign u and dv...

thanks for helping me!

oh i see now. so after doing the subsitution for sqrt of x = y. I end up with integration of (e^y)(2ydy). which then do integration by parts through u=y and dv = e^y. thus i get x^(1/2)e^(x^(1/2))-e^(x^(1/2)). so after doing the limits it is 2e^2. is that how it is?

Homework Statement Hi, I've been having trouble solving the following problem, please help me. Question: (integration from 1 to 4) e^(x^(1/2))dx Homework Equations The Attempt at a Solution So far, i have done the following: u = e^(x^(1/2)) du =...