A) suggest why the pipes are made of Copper b) suggest why the pipes and the metal backing sheet are painted black
c) Suggest why an insulating material is attached to the metal backing sheet
d) Suggest why the presence of the glass sheet increases the energy collected by the water

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.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.