Change mass, parachute size, height
http://www.physicsclassroom.com/Physics-Interactives/Newtons-Laws/Skydiving
Change mass, parachute size, height
http://www.physicsclassroom.com/Physics-Interactives/Newtons-Laws/Skydiving
Change direction of current, see field lines, compass
http://www.walter-fendt.de/html5/phen/magneticfieldwire_en.htm
Helen rates this resource as Good
Build up field arrows by moving charge near other charge
http://mw.concord.org/nextgen/#interactives/physics/electrostatics-physics/direction-force-physics
Helen rates this resource as Good
See pattern of field lines
http://www.physicsclassroom.com/Physics-Interactives/Static-Electricity/Electric-Field-Lines
Change charge, distance, measure p.d., force
https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html
Helen rates this resource as Good
Change charge, distance, move charges around, see fields, forces
http://mw.concord.org/nextgen/#interactives/physics/electrostatics-physics/charge-intensity-2
Change charge, see fields, forces
http://mw.concord.org/nextgen/#interactives/physics/electrostatics-physics/charge-intensity-physics
Helen rates this resource as Good
Change charges, see electric fields forming
Helen rates this resource as good