Physics HW Ms H

Q1.          (a)     State Newton’s law of gravitation.

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(2)

 (b)     In 1798 Cavendish investigated Newton’s law by measuring the gravitational force between two unequal uniform lead spheres. The radius of the larger sphere was 100  mm and that of the smaller sphere was 25  mm.

(i)      The mass of the smaller sphere was 0.74 kg. Show that the mass of the larger sphere was about 47 kg.

density of lead = 11.3 × 10³ kg m^–3

 (2)

(ii)     Calculate the gravitational force between the spheres when their surfaces were in contact.

Exam Technique workshop - twilight session THIS THURSDAY

Dear Year 12 Physicists,

We are very lucky to have a lecturer and tutor from Oxford Uni running a session on problem solving and exam technique this Thursday (18th May) from 3-4pm.

This session will give you more opportunities to practice exam questions, and will also look at strategies for when you don't know what to do in exams!

All Year 12 Physics students are expected to attend.  See me in advance if there is a problem with this.  (12e, this session will replace Tuesday's twilight session)


Dr Spence

Easter HW MS H

Rsearch method of measuring g
Finish refraction questions
Try projectile simulation below

Have a play with the simulation tyo get a feel for projectiles
https://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html
Happy Easter!

Y12 girls Physics problem-solving day (free)

Calling all Year 12 girls thinking about Physics at University (can't work out a way to send individual messages on Edmodo...)!

APPLY BEFORE APRIL 5TH:
Oxford Physics department are running a FREE Y12 girls problem solving day on Friday 21st April.  The day involves workshops, meeting Physics undergraduates and researchers, trying some undergraduate practicals, and advice on applying to Oxford Uni. It will be fun, useful, and incredibly beneficial for UCAS applications!

Follow the link below to apply BEFORE 5TH APRIL.  Only a few spaces left, and priority will be given to local schools.

https://www2.physics.ox.ac.uk/my-forms/year-12-girls

Any questions, contact Dr Spence

HW set 30th March Ms Hamnett

HW for this week
Draw and annotate sketch graphs of a skydivers motion s-t and v-t
Do ten more waves questions from the booklet (some of you now owe me 20..)
Thanks
Ms H

Cover for Friday P2 Ms H

 Cover for tomorrow as I am away, it is from your Physics text book;

1.     P100 questions on refraction

2.       Exam style Qs P108-110

3.       Make notes on optical fibres and uses of TIR (from book or other sources)

Thanks

Ms H

CERN participants - passport copy needed ASAP

To all those coming to CERN this year - I need a copy of your passport photo page by Monday so that I can book flights, please bring this in to Dr Hardwick by Monday.  To book the flight we need your name exactly as it appears on your passport, and we will need various other details from it to finalise the booking - if you are in the process of getting a new passport or it has expired, please bring your full name as it appears on the passport to Dr Hardwick. You will need a valid passport for the trip.
Thanks
Ms H