MYTUTOR SUBJECT ANSWERS

248 views

A stationary observer Bob, observes Alice take 5 seconds to travel from point A to B at 0.95c. How much time does Alice measure the journey from A to B to take?

This question is all about the application of Special Relativity. 

In order to solve this problem we need to identify that the correct equation to use here is:

t= (gamma factor)t0

Where t is the time observed by Bob, t0 is the time observed by Alice and the gamma factor = 1/Sqrt(1-(v2/c2)

We need to rearrange the equation for t0, giving 

t0=t/(gamma factor) 

t0= t(Sqrt(1-(v2/c2))

Subsituting t =5 s, v = 0.95c, we obtain:

t0=(5 s)(Sqrt(1-0.952))

t0 = 1.56 s

Elizabeth  R. A Level German tutor, A Level Physics tutor, A Level Ma...

11 months ago

Answered by Elizabeth , an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

55 SUBJECT SPECIALISTS

£26 /hr

Vandan P.

Degree: Physical Natural Sciences (Bachelors) - Cambridge University

Subjects offered: Physics, Science+ 6 more

Physics
Science
Maths
Further Mathematics
Chemistry
.STEP.
.MAT.
-Oxbridge Preparation-

“I am a second year undergraduate at Corpus Christi College Cambridge. I am studying Natural Sciences. In my first year I did Physics, Chemistry, Computer Science and Maths and passed with first class honours....”

£24 /hr

Brad D.

Degree: Natural Sciences (Masters) - Durham University

Subjects offered: Physics, Maths

Physics
Maths

“About me: Hey everyone, I'm Brad! I'm studying for a Masters degree in Natural Sciences at Durham, specializing inMaths and Physics. Even while studying at school, I loved the sciences, and I loved being able to help people fully come...”

£20 /hr

Ben A.

Degree: Medicine (Bachelors) - University College London University

Subjects offered: Physics, Maths+ 6 more

Physics
Maths
Chemistry
Biology
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“Hello,I am a first year medical student at University College London, When I was in sixth form, I helped tutor the younger years and I always enjoyed it, so I decided to keep it on in my university years.My subjects are the three m...”

About the author

Elizabeth R.

Currently unavailable: for new students

Degree: Computer science and Physics (Bachelors) - Durham University

Subjects offered: Physics, Maths+ 2 more

Physics
Maths
German
Computing

“About me Hello! I am Lizzy and I am a student currently reading Maths, Physics and Computer Science at St Mary's College, Durham University. You may notice that I am studying quite a broad degree at the moment and this enables me to t...”

You may also like...

Other A Level Physics questions

What is the Quark structure, Baryon number, and antiparticle of a kaon, K+, which has a strangeness of 1.

Why does current split between branches of a parallel circuit, but voltage remains the same for each branch?

A ball is thrown out of a window 18m off the ground. It is thrown horizontally at 0.5m/s. Show that it takes about 2s to reach the ground

Describe and explain the photoelectric effect (6 marks)

View A Level Physics tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok