Reflection happens when a wave .

question 3 options:

a. causes ripples in a body of water

b. compresses air particles as it travels

c. strikes an object and bounces off of it

d. compresses air particles as it travels

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Which of the following is the best name for mgcl2