Recent content by rebeccc

It's not correct, is it?

The problem is already posted above.

I'm trying to figure out this same problem only with diff. numbers and I'm stuck.. so if anyone has any ideas, please share!

Ahh, genius! I converted the units and it worked! Thanks SO much!

When I divided the speed of light (299,792,458 m/s) by my distance (54km or 54,000m), I got 5551.7 and this was not the correct answer. I then set my 5551.7 equal to 1/T and solved for T. By doing this I came up with 1.79 * 10^-4. This was incorrect as well. = /

I really don't understand what you're saying... = /

So I should divide the speed of light by 54000m?

speed of the wave?

Seriously, ANY ideas would be of help at this point..

This is the last part of the question. I already found the frequency to be 9.7 GHz and the wavelength is .031 meters. It's just this last part of the question that I can't seem to figure out. I really don't even know where to begin, I checked my book and online and can't seem to find any...

I have to have my answer in m/s which is really throwing me off.. I don't know how to get to m/s from rad/s. = (

If anyone has any ideas.. I need help asap!

Okay, I re-worked it and found the angular acceleration to be 6.28 rad/s^2. I just don't know where to go from here to find the speed of the discus when it is released...

Homework Statement To throw the discus, the thrower holds the discus with a fully outstretched arm and makes one revolution as rapidly as possible to give maximum speed to the discus at release. The diameter of the circle in which the discus moves is about 1.7m. If the thrower takes 1.0s to...

How much force does the 68 kg astronaut exert on his chair while accelerating straight up at 12 ?