Energy & Fields Flashcards
(9 cards)
What are the four ways energy can be transferred
Heating, electrical, propagation of waves, mechanical
What are the 8 stores of energy
GPE, internal energy (heat), EPE, nuclear energy, kinetic energy, electric potential energy, chemical energy, magnetic potential energy
How to find net work done (explanation aspect)
When considering the sum of the work done by every force acting on the object, net work done calcualted will be change in __ energy of the object
How to represent field at certain point using vector arrow
Strength is represented by length of arrow, direction of field represented by direction of vector arrow
How to represent field throughout a region using field lines
Strength represented by spacing between field lines, direction indicated by arrows placed on the lines.
Note: lines do not intersect/touch
Describe electric field produced by positive and negative charge
Positive: Electric field produced directed away from it
Negative: Electric field produced directed towards it
Relationship between change in energy and work done (in gravitational/electric field)
Work done by gravitational or electric field is equal to negative of change in gravitational or electric potential energy
What is principle of conservation
In absence of any external force, total mechanical energy of system is conserved where the total mechanical energy is the sum of kinetic energy and potential energy of the system
How to find power of motor
P = Fv (ONLY FOR MOTORS)
