8. An airplane of mass 8500 kg dives has an altitude of 15,000 m. It then dives steeply to an altitude of 11,000 m. What was the change in potential energy?

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?

Explain what happens at the saturation point when adding salt to water at room temperature.

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion