Thermal energy is the energy of moving atoms of matter true or false

Plz send halp...

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.

Ineed the answer to question 1 , i’m desperate

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?