Light travels at the rate of 300,000 kilometers per second in a vacuum." Which of these statements is correct about this law? It is a fact in nature which cannot be tested. It is a theory which is not supported by data. It is an observation which cannot be explained. It is a description which does not work under similar conditions

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.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Acar travels 40m in 8 seconds find the car speed