We finished the Energy Matters topic last week. Here are some notes with worked examples to show how we calculate the heat energy required to change the state of matter. Values of Lf and Lv are provided inside the front cover of a question pa

S4: work done, potential and kinetic energy

Feb 8th, 2013 1s

We finished the transport section with a look at Work, Potential & Kinetic energy. Those of you aiming for Credit need to carry out calculations involving kinetic energy using Here is a video about work, potential energy & kinetic energy from

balanced and unbalanced forces

Jan 25th, 2013 1s

Here are some videos on balanced and unbalanced forces affecting the motion of objects. The first clip examines the forces on a cyclist as she cycles round a velodrome. //www.youtube.com/watch?v=WoTQDrzCqb0 The second clip looks at the way sky

S4 forces and seatbelts

Jan 22nd, 2013 1s

We’ve been learning about forces in class and today we looked at how car seatbelts use forces to keep us safe. Mr Mallon’s HelpMyPhysics site has a short video that demonstrates how a monkey can stay safe during a trolley collision when it is

3.3 resistance homework

Dec 9th, 2012 1s

Your homework exercise on resistance is attached as a pdf document. Download the file and answer the questions in your homework jotter. Hand in your jotter no later than Monday 17/12/12.

Detecting radiation with a Geiger-Muller tube

Nov 14th, 2012

We’ve examined the operation of a Geiger-Müller counter as part of the radiation topic. image by Theresa Knott The Geiger-Müller (GM) counter is used to detect ionising radiation such as alpha and beta particles or gamma rays. The radiation en

radiotherapy – part 2

Nov 14th, 2012 1s

Last week, the BBC broadcast a Horizon programme about new cancer treatments being trialled at the Royal Marsden Hospital in London. The documentary followed three different types of treatment; robotic surgery, a genetically targeted drug and

radiotherapy – part 1

Nov 14th, 2012

Radiotherapy is one method doctors can use to treat cancer. Radiotherapy can be performed without surgery and avoids the side effects that a patient may experience during chemotherapy. In the most common form of radiotherapy, high energy x-ray

x-rays

Nov 6th, 2012

X-rays are a form of electromagnetic radiation. They have a much higher frequency than visible light or ultraviolet. The diagram below, taken from Wikipedia, shows where x-rays fit into the electromagnetic spectrum. image by Materialscientist

ultraviolet

Nov 6th, 2012

We spent some time looking at the physics of ultraviolet radiation last week. image courtesy of sonrisaelectrica The section of the electromagnetic spectrum with wavelengths ranging from 10nm to 400nm is called ultraviolet radiation (uv for sho

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