Which type of wave is more dangerous for humans? Microwaves or x-rays?

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.