If you plug in your electrical heater in for 15.0 minutes and then in the process used 16,000 j how much power did you use

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

The slope of a velocity time graph over any interval of time gives the during that interval

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.