Module 8 Flashcards
What is power?
The amount of energy expended per second.
What is heat?
Energy that is transferred from one object to another as a result of difference in temperature.
What is electrical energy?
Energy associated with the motion (or potential motion) of charged particles.
What is chemical energy?
Energy associated with the chemical bonds of a molecule.
What is mechanical energy?
Energy associated with the movement (or potential) movement of objects.
What is the First Law of Thermodynamics?
Energy cannot be created or destroyed. It can only change form.
What is the unit for work and energy?
Joule (Newton x m)
What is the unit for power?
Watt (J/sec)
What is kinetic energy?
Energy in motion / doing work
What is potential energy?
Energy that is stored / ready to do work.
What is work?
The product of the displacement of an object and the component of the applied force that is parallel to the displacement.
What is energy?
The ability to do work.
What are units of force?
Newton, lb, dyne.
When an object attached to a string is pulled up higher than its equilibrium, before it is dropped, what PE and KE does it have?
it only has potential energy and no kinetic energy.
When an object attached to a string is pulled up higher than its equilibrium and dropped what PE and KE will it have when it reaches equilibrium?
It will only have kinetic energy and no potential energy.
