energy transfers Flashcards
what does input energy equal to
output energy
what energy source would be in a lamp and tv (useful and wasteful)
lamp: input: electrical output: light (useful), heat (wasteful) TV: input: electrical
outut: light, sound (useful) heat (wasteful)
why is the width in a sankey diagram matter
The width represents the quantity
what are the energies in the pendulum
Kinetic energy, Elastic potential energy, Gravitational potential energy. (and heat)
what happens when the pendulum lowers.
GPE lowers KE rises.
What does elastic potential energy in a pendulum do.
Elastic potential energy in the swing becomes kinetic energy to help the pendulum to swing .
What happens when the pendulum continues to swing and slows down
Heat\sound energy starts to dissipate to the surroundings. Heat starts to release making the pendulum slow down and stop.
