As the airplane ascends to air, a passenger felt a popping sensation in his ears due to the change in pressure felt by the ear. Determine the altitude when the popping sensation was felt with estimated force of - 1.2N was experienced by the ear. The eardrum is 0.2cm2 and the average density of air is 0.8kg/m m m (read as 0.8 kg per cubic meter). Do not forget to affix the correct unit in the short answer *