Which three statements describe mechanical waves? A.
The waves need matter to transfer energy.
B.
The waves transfer energy by causing particles of matter to move.
C.
The waves can travel through empty space.
D.
The waves can transfer energy through solids, liquids, and gases.

not moving. pos accel,

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

technology is the application of the knowledge gained by science.