Suppose there were a bubble of air on the bottom of the metal cylinder immersed in water. how would this affect the calculation of the density of the metal'?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?