Helpmyphysics

Hi second year scientists! Have a go at this heat topic test.

Electric Field

Hi Physics lovers! Here is a great link to that incredible useful PhET physics site.
In this simulation you can arrange different electric charges in space and see the electric field produced around these electric charges.

There is much more fun as well. Once you have built the electric field then you can see what it does to a charge placed in that field.
You can try and get the test electric charge into a goal.

Electric field lines don`t exist for real. They just show the strength and direction of the force which acts on a positive electric charge.

Click on the picture or go to this link for some electric field fun.

PhET Electric Field Hockey

Here is a brilliant picture showing all the space exploration missions of the past 50 years from planet Earth.
Just imagine the fact that in 50 years we`ve only explored a tiny tiny distance from our home.

Click here for the National Geographic Link or click the picture above to download the poster.

During an Easyjet flight from Edinburgh to Madrid I took a snap of the Scottish hills jutting out of the clouds. These are the western hills as the aircraft headed west from Edinburgh and was just about to turn and fly down the south coast of Scotland.

The sun was shining on the left of the aircraft on the opposite side to my window.

I noticed on the picture a small rounded rainbow which had a bright centre. (Marked on the picture with an arrow)
This is called a Glory or a Broken Spectre. This optical phenomenon is usually seen on mountains when the sun is low and behind the climber.

Check this link to find out more.
Glories
Optical Phenomenon

Hi Physics lovers, here are the answers to the questions I set for the October holiday week:

1. 1) 52.5m
2. 2a) vertical velocity = 15m/s, horizontal velocity = 26m/s
3. 2b) 1.5 seconds to reach the top
4. 2c) Remember to double the time. Distance = 78m
5. 3a) 3m/s2
6. 3b) 30 N
7. 4a) 147 000 N
8. 4b) 327 000 N
9. 5a) 294 N
10. 5b) frictional force = 294 N
11. 6a) 3m/s2
12. 6b) 512 N
13. 6c) 272 N
14. 6d) 0 N

See you all on Tuesday when we will continue the Higher physics story looking at momentum!

Check out this physics movie of a live projectile experiment using ball bearings.

Hi Physics lovers, check out this video which shows how your weight changes when an elevator moves up and down.

Some Questions…..

1. What was the reading on the Newton scale when the elevator was at rest?
2. What happened to the weight reading when the lift accelerated downwards?
3. What happened to the weight reading when the lift accelerated upwards?
4. What happened to the weight reading when the lift was coming to a stop on the way up?
5. What happened to the weight reading when the lift was coming to a stop on the way down?
6. Can you work out the initial upwards acceleration of the lift?

Lift Physics Link