1. Since 1970, annual worker fatalities on the job have decreased in America by about
75 percent
63 percent
half
one-third

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

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?

What are some properties of transverse waves?