A600- g piece of metal is heated to 100°c and placed in an aluminum can of mass 400-g which contains 100-g of water at 17.3°c. the final equilibrium temperature of the mixture is 39.2°c, what is the specific heat of the metal?

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

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.

What type of nuclear decay causes the atomic number of an element to increase by 1?