Physics AQA Specification A Unit 4 Multiple Choice Questions

12

As this exam is coming up in a few weeks and theres lots of marks to be had in section A of the paper i thought it would be good to make a thread where people can post multiple choice questions they are stuck on as the mark schemes only give the letter answer with no reasons or proofs.

7 What is the angular speed of a point on the Earth’s equator?

A 7.3 × 10–5rad s^-1
B 4.2 × 10–3rad s^-1
C 2.6 × 10–1rad s^-1
D 15 rad s^-1

Reply 1

Zwitter Ion

10

Tagit

As this exam is coming up in a few weeks and theres lots of marks to be had in section A of the paper i thought it would be good to make a thread where people can post multiple choice questions they are stuck on as the mark schemes only give the letter answer with no reasons or proofs.

7 What is the angular speed of a point on the Earth’s equator?

A 7.3 × 10–5rad s^-1
B 4.2 × 10–3rad s^-1
C 2.6 × 10–1rad s^-1
D 15 rad s^-1

Hey, i had trouble with this question aswell
the answer is A:
Using Omega=2 (pi) f
the angular frequency is the number of revoulutions per second so therefore:
f = 1/24x60x60 which = 1.16x10-5 Hz
now you can put it in the equation so:
omega = 2 x pi x 1.16x10-5 and you should find the answer to be:
7.27x10-5 rads-1 :smile:

Reply 2

*lux*

If you go to the Examiner's Reports for each year, then it kind of goes through the principles needed to answer the multiple choice questions. Wish they were more thorough though...

Reply 3

Asia99

1

Omega is just the angular displacement, what about the angular speed? I know it's omega over time but I don't understand what is my value for time in this last equation.

Physics AQA Specification A Unit 4 Multiple Choice Questions

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