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Vad ar skillnad mellan likström och växelström?

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

that would be because of both gravity and friction. so     c

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.