Which statement describes a way electromagnetic waves are different from mechanical waves?
a. electromagnetic waves can travel only through matter.
b. electromagnetic waves can carry energy over a distance.
c. electromagnetic waves can transfer matter through empty space.
d. electromagnetic waves can travel through empty space.

a. Wrong. EM waves can travel through matter OR vacuum.

b. True, but so can mechanical waves.

c. Wrong. Waves transfer energy, not matter.

d. This is it. EM waves can travel through empty space, and mechanical waves can't.

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

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete