Un avió de 10000kg vola horitzontalment a 9 km d'altura i té una energia mecànica de 109 J, calculeu: a) Les energies potencial i cinètica en aquesta posició. b) La seva velocitat.

Name the non metal condut electricity

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

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