In a bizarre but harmless superman fell from the top of the eiffel how fast was superman traveling when he hit the ground 7.80 seconds after falling ?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

In science and physics what is the standard unit of measure for speed?