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shortcake1970
 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?
shortcake1970
 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?

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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.
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