Technician a says that when checking engine compression, the first puff on the compression gauge should be close to 50% of the final compression reading. technician b says that the first puff should be 20% of the last reading. which technician is correct?

For which pair of objects would adding the same a

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

What quantity do units represent in value