If an object is transported from earth to the planet mars, which of the following properties will change?
a. mass b. weight c. volume d. density

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.