Recent content by blueberrynerd

If you have a triangle circumscribed around a circle, how do you find the area of that circle? Say that the triangle is an equilateral triangle with side length of 8 cm. I found the area of the triangle using Heron's formula: 16√3 cm^2. Apparently the answer is 16π/3 cm^2. I'm just confused...

Thanks! That clears up a lot. :smile:

This suddenly entered my mind while studying magnetic fields. I know of course that it is the gravitational force that holds the planets in orbit, but do their magnetic fields also have an effect, even by an infinitesimal amount? Do the magnetic fields of the planets have a small influence on...

Would a single beat be considered as an example of a pulse wave? :smile:

Thanks a bunch! :biggrin:

Do all gravitational waves propagate at the same speed? Is it only the magnitude which varies, according to the body of matter that produced the waves?

Homework Statement A star 10 light-years away explodes and produces gravitational waves. How long will it take these waves to reach the earth? Homework Equations The problem is, I don't know what equations to use or if it's just a matter of simple math. The Attempt at a Solution...

Thanks guys! :biggrin:

Hi! Need some help here. Are the effects of general relativity reciprocal in two reference frames? Let's say for example that there is one man at the bottom of a really, really tall building, and another at the top. The man at the top floor should perceive the man at the bottom to be...

Hi! Need some help with this that's been plaguing my brain. :smile: Hypothetically, if an object's speed were to be increased so as to reach the speed of light and let it gain maximum momentum, what would we perceive as happening to the object?

Thanks for the help! :smile:

What I was wondering is if time dilation and length contraction are perceived at constant speed in the same way it is perceived at accelerating speeds?

Hi! :smile: Need some help here. Can we perceive time dilation and length contraction in a non-inertial reference frame? If we observe a reference frame experiencing acceleration close to c, do we see the same effects as in an inertial reference frame?

Hi! This is the definition of simultaneity I was taught: Two events that are simultaneous in one frame of reference need not be simultaneous in a frame moving relative to the first frame. I'm wondering if this concept only applies to relativistic phenomenon, and if not, would you happen...

This reply is almost a month delayed, but THANK YOU! You helped a lot! :biggrin: