Pomoże ktoś z tymi zadaniami ? Byłabym wdzięczna

Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process

Work = force × a. work b. energy c. distance d. momentum

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?