Month: March 2012
solutions to higher physics unit 2 practice NAB
Sorry folks, the link I put up here earlier did not have the answers to the practice NAB for unit 2 of Higher Physics. I’ve written my answers for you instead, with mark allocation indicated down the side in red.
Download a copy using the link below.
E-Book PDF: Open in New Window | Download
S3 the kilowatt-hour
Recently we looked at the way power companies calculate how much electrical energy we use in our homes. The Joule is too small a unit to measure household energy consumption, so suppliers work out our bills using a must larger unit called the kilowatt-hour (kWh).
I found this page on BBC Bitesize that has some information and a quiz to test your kWh knowledge. There is also a section on the kilowatt-hour at gcse.com.
dropping a slinky
Ria asked if a slinky really stops in mid air when it is released. Eoin helped us to find out the answer.
It’s easier to see what happens if you watch a slow motion version.
Or even slower motion.
Why does that happen?
Podcast: Play in new window | Download