HELP ME ASAP PLZ! What is the relationship between an electromagnetic wave and the vibrations of the electric and magnetic fields it moves through.

What are atoms of the same element with varying number of neutrons

The speed of light can be used to measure the

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?