The making of a champion: Shane Perkins can produce 2500 W of power and burns over 5000 kcal per day. That’s 21 million joules! Wow!
of course this vid of “Man vs. Toaster” can’t be overlooked. (at least by track cycling physics teachers)
A table of Some Specific Heat Capacities
Another table of Specific Heat Capacities of some metals
Conservation of Energy
The Ballistic Pendulum is a cool example of how the conservations of momentum and energy are used together to find the velocity of a bullet.
Work, Energy and Power
Here is the CrashCourse vid on WEP. It’s a good summary!
Note: we don’t have to worry about the vector stuff, or the calculus.
Practice Problems and Keys:
Energy Work and Power Makes Me Hot: Blank
Energy Work and Power Makes Me Hot: Key
Error: #6 the units should be Joules. Bad teacher!
Error: #13 I put units of Watts. They should be seconds! Also the question asked for minutes, therefore the answer would be 21 min. Really bad teacher!
Extra Practice Sheets from Mr. Carmichael
Work and Energy Practice Problems KEY
Note: Question 11 should read 68.6 N not 686 N. Question 12 should read: “…He pulls the box 12.0 m.”
Conservation of Energy Practice Problems KEY
Note: Question 15 should read: “…and draws the string back 1.25 m.”
Power Practice Problems KEY
Note: Question 9 should be (a) 1800 N (b) 0.12 and #13 should read (b) 72000 W (the time was wrong, should be 8.0 s)