Resonance occurs when one vibrating object transfers energy to a second object causing it to vibrate. The energy transfer is most efficient when, compared to the first object, the second object has the same natural 1)amplitude 2)speed

3)wavelength 4)frequency

show the wavelengths of a wave. show the crests of a wave.

iron would move it is magnetic there is a mag field around the current in the wire

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

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