The fact that, in general, liquids and gases expand when heated gives rise to
a) convection currents in fluids due to changing masses.
b) convection currents in fluids due to changing densities.
c) heat transfer by conduction.
d) convection currents in fluids due to constant temperatures,

Ascientist is tracking an object orbiting the sun that is found between mars and jupiter. in order to classify the object as an asteroid, it must be at least

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.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.