If a violin string vibrates at 269 hz as its fundamental frequency, what are the frequencies of the first four harmonics?.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

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.

The energy released by a nuclear fusion reaction is produced when