Answer:
Acoustic tractor beams use the power of sound to hold particles in mid-air, and unlike magnetic levitation, they can grab most solids or liquids even small insects. For the first time engineers have shown it is possible to stably trap objects larger than the wavelength of sound in an acoustic tractor beam. This discovery could enable the manipulation of drug capsules or micro-surgical implements within the body. The discovery could even lead to levitating humans.
Explanation:
I think it’s C but anybody can correct me if I’m wrong
The answer is most definitely “A”
8 moles I think I’m not sure
I'm not sure but i would say C.storing the heat energy.
