James B. A Level Physics tutor, GCSE Physics tutor, A Level Maths tut...

James B.

Currently unavailable: for regular students

Physics (Masters) - Bristol University

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About me

I am a Physics student at the University of Bristol. I thoroughly enjoy studying physics and wish to spread some of my enthusiasm for science and maths to those who I teach.

I have experience as a peer mentor at university, where I helped new physics students with their course. I've always enjoyed talking about science and explaining concepts to my peers.

In my lessons, I will aim to give the student a fundamental understanding of the topics and explain concepts in many creative ways.

If you have any questions, send me a webmail or book a Meet The Tutor session, and let me know the exam board and subject you need help with.

I am a Physics student at the University of Bristol. I thoroughly enjoy studying physics and wish to spread some of my enthusiasm for science and maths to those who I teach.

I have experience as a peer mentor at university, where I helped new physics students with their course. I've always enjoyed talking about science and explaining concepts to my peers.

In my lessons, I will aim to give the student a fundamental understanding of the topics and explain concepts in many creative ways.

If you have any questions, send me a webmail or book a Meet The Tutor session, and let me know the exam board and subject you need help with.

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Qualifications

SubjectQualificationGrade
PhysicsA-level (A2)A
MathsA-level (A2)A
ChemsitryA-level (A2)B

General Availability

Pre 12pm12-5pmAfter 5pm
mondays
tuesdays
wednesdays
thursdays
fridays
saturdays
sundays

Subjects offered

SubjectQualificationPrices
MathsA Level£20 /hr
PhysicsA Level£20 /hr
MathsGCSE£18 /hr
PhysicsGCSE£18 /hr

Questions James has answered

There are 7 white socks and 4 black socks in a drawer. Two socks are taken out at random without replacement. Work out the probability that the two socks are the same colour

The probability of pulling out two socks of the same colour is n/m*(n-1)/(m-1) where n is the initial number of that type of sock and m is the total number of socks in the drawer. The reason that we take 1 away from n and m is because a sock has been taken away from the drawer, and this means the probability of picking that kind of sock again has changed. 

Initially there are 7+4 = 11 socks in the drawer.

The probability of picking 2 white socks is 7/11 * 6/10 = 0.382

The probability of picking 2 black socks is 4/11*3/10 = 0.109

Therefore, to find the probability of picking two of the same colour of sock, we add the probability of picking two white socks and the probability of finding two black socks together. 

0.382 + 0.109 = 0.491

The probability of pulling out two socks of the same colour is n/m*(n-1)/(m-1) where n is the initial number of that type of sock and m is the total number of socks in the drawer. The reason that we take 1 away from n and m is because a sock has been taken away from the drawer, and this means the probability of picking that kind of sock again has changed. 

Initially there are 7+4 = 11 socks in the drawer.

The probability of picking 2 white socks is 7/11 * 6/10 = 0.382

The probability of picking 2 black socks is 4/11*3/10 = 0.109

Therefore, to find the probability of picking two of the same colour of sock, we add the probability of picking two white socks and the probability of finding two black socks together. 

0.382 + 0.109 = 0.491

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2 years ago

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