Um tanque rígido contém 2 kg de refrigerante R-22 superaquecido a 20°C e 0,5 MPa.
a) Se o tanque está cheio, qual o volume do tanque;
b) Se o fluido for resfriado para -20°C, qual o título do
refrigerante?
c) Para quais valores de volume específico o refrigerante
deverá ter após o resfriamento para ser um líquido
comprimido? Justifique a resposta

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these