A battery has emf of 12V and an internal resistance 0.05ohms. its terminals are connected to a load resistance of 3.0 ohms calculate the current I in the circuit and the terminal v voltage of the battery

Which of the following are guidelines to follow for obtaining accurate observations

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly