Recent content by kait

I would need the distance from the moon to the Earth which is 3.84*10^8 m and t=L/v=3.84*10^8/1.12*10^4=3.44*10^4 s. Then to find t', I would use t'=t/gamma and subtract t' from t? But then, I still end up with 3.44*10^4 s, which is t.

Ok, (v/c)^2/2= 6.96889e-10, so the answer to my problem is 1+6.96889e-10

When I use v/c, I get 1 because v is so much smaller than c. Is that the answer; the same as Earth's frame?

Someone please help. I've gotten no sleep because of this problem. I just don't see/ understand what to do at this point in the problem.

Where does the 6.86*10^-10 come from? Wouldn't I use 1+(v^2)/2=1+25,000^2/2=3.12*10^8.

I converted c=3e8 m/s to c=6.711e8 mi/h and when I put that into the equation, I get 1. Because I was getting 1, I looked at the class notes from this morning and saw that the professor omitted c and just used sqrt(1-(v^2)). When I do that, I get the negative obviously because v^2 is greater...

Homework Statement The Apollo astronauts returned from the moon under the Earth's gravitational force and reached speeds almost 25,000 mi/h WRT Earth. Assuming (incorrectly) they had this speed for the entire trip from the moon to Earth, what was the time difference for the trip between...

From the wording of the question, it looks like it only wants the distance from the Moon to the Earth. That is the problem that I am having. According to my calculator, I have two choices. I can take it to be 1 or the square root of a negative number, which is what is messing me up.

The way I have it set up, the time dilation factor is less than 1, am I doing something wrong?

Homework Statement The Apollo astronauts returned from the moon under the Earth's gravitational force and reached speeds almost 25,000 mi/h WRT Earth. Assuming (incorrectly) they had this speed for the entire trip from the moon to Earth, what was the time difference for the trip between...

Homework Statement I'm working on a practice test and got stuck on the question: Approximate the length of the curve y=√x, 0≤x≤1 by the midpoint rule with n=4 and ∆x=0.25. Homework Equations Is the midpoint rule the same thing as Simpson's rule? I don't remember going over the midpoint...

Find the volume of a frustum of a right circular cone with height h, lower base radius R, and top radius r. I don't want the answer. I want to know how to do this. My math teacher gave all of these problems for the class to do, but didn't explain anything. Are there equations that I can...

thank you so much!

I have an alloy and found the average specific heat of the metal to be 289 J/kg°C. I need to know what type of metal it is. I've looked at several different tables of specific heats, but can't find what I'm looking for. Can anyone help me?

Right now I am a year away from a BA in business, but I don't know if that's what I want to do for the rest of my life. I need something more challenging. Thanks for all of the ideas.