CAN YOU GUYS HELP ME ANSWER MY QUESTIONS TO MY PHYSICS HOMEWORK, CLICK ON MY ACCOUNT AND VIEW MY QUESTIONS I ASKED PLEASE, I NEED HELP AND I DON'T UNDERSTAND :(((

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

The movement of electrons between atoms is called an

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same