g If a photon with an energy of 7.22 x 10-19 J hits the surface of a metal with a binding energy of 5.40 x 10-19 J, what is the velocity of the electron that is ejected

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

In a system, when potential energy decreases, then entropy also decreases. true false

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.