A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
if you were to travel to a star 50 light years from earth at a speed of 2.0 X 10 to 8th power m/s, what would you measure this distance to be?
 2 years ago
if you were to travel to a star 50 light years from earth at a speed of 2.0 X 10 to 8th power m/s, what would you measure this distance to be?

This Question is Open

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2@shortcake1970 do you know the definition of a light year?

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2A light year is the distance that light travels in one Earth year.

VeritasVosLiberabit
 2 years ago
Best ResponseYou've already chosen the best response.0light travels at 3*10^8 m/s

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Yes that's approximately the speed of light, as @VeritasVosLiberabit said.

VeritasVosLiberabit
 2 years ago
Best ResponseYou've already chosen the best response.0so it seems the 2*10^8 is meant to throw you off because it is irrelevant to finding the distance

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1and the distance light travels in a year is 9.47 X 10^15 i have that much

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Now find the number of seconds in one Earth year. Yes @VeritasVosLiberabit , that is extraneous information. Not needed.

VeritasVosLiberabit
 2 years ago
Best ResponseYou've already chosen the best response.0it might be better to keep your calculations in MKS units unless told otherwise.

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Alright @shortcake1970 now simply multiply that answer by 50.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1so do I just multiply?

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Haha that's what I said.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1oops yup you just answered that

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Need help with anything else or are you okay?

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1well I do have another questions I might need help with let me write it...

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Are these questions you've tried yourself? It's important you try them yourself first.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1a beam of a certain type of elementary particle travels at a speed of 2.8 X 10^8 m/s. at this speed the average lifetime is measured to be 2.5 X 10^8 s. what is the particle's lifetime at rest. let me tell you what formula i was thinking of using

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1once i know which formula i can work it out myself :)

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Sorry I was away for a minute. Just give me second. I'm just in the middle of something.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1ok i'm having a hard time typing the formula

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1delta t=delta t o /square root of 1v^2/c^2

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2OK I'm back. Yes\[\Delta t =\frac{ \Delta t _{0} }{ \sqrt{1\frac{ v ^{2} }{ c ^{2} }} }\]

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Do you understand? \[\Delta t = 2.5\times10^{8}s\]\[v =2.8\times10^{8}m/s\]\[c =3.0\times10^{8}m/s\]\[\Delta t _{0}=?\]Rearrange the formula first to get\[\Delta t _{0}=\Delta t \sqrt{1\frac{ v ^{2} }{ c ^{2} }}\]

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Give me a second to calculate it.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1is the answer for the previous question 4.73 x 10^17?

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2It should be\[9.0\times10^{9}\]

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2That exponent is negative 9

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Do you? Did you spot your error?

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1yes i spotted the error

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2Great. I have to go but is there anything else before I do?

calculusfunctions
 2 years ago
Best ResponseYou've already chosen the best response.2I guess not. I might be back a little later. Bye.

shortcake1970
 2 years ago
Best ResponseYou've already chosen the best response.1thank you so much.
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.