You are Here: Home

# CfE Higher Physics HELP!

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
1. There are a few questions which i don't understand from the model papers

Model Paper 1 Multiple Choice Q5

The acceleration at the surface of the earth is taken as 9.8ms-2. The acceleration at 4 earth radii from the surface of the earth will be:
A. 2.5ms-2
B. 0.39ms-2
C. 4.9ms-2
D. 0.61ms-2
E. 0

Model Paper 2 Multiple Choice Q6

A spectral line from light from a binary star is observed to have a wavelength of 450nm. The same line on earth has a wavelength of 472nm. At that point, the star is:
A. Moving away from the earth at 1.5x10^7ms-1
B. Moving towards earth at 1.5x10^7ms-1
C. Moving towards earth at 1.5x10^8ms-1
D. Moving away from earth at 1.5x10^7ms-1
E. Moving towards earth at 2.1x10^8ms-1

Model Paper 2 Multiple Choice Q7
An ambulance emits a note of frequency of 460Hz when stationary. The ambulance travelling at a constant speed of 20ms-1 passes an observer. The frequency heard by the observer as the ambulance approaches is
A. 424Hz
B. 452Hz
C. 489Hz
D. 470Hz
E. 434Hz

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 21, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

### Who would you like to thank?

Poll
Applying to university

Our tool will help you find the perfect uni course for you