How would you define a psychological disorder? How was the topic of mental health changed over the past 50 yess?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Which atomic model was proposed as a result of j. j. thomson’s work?

What are two different ways you could find the value of a? explain these methods.