Text problem 12.44 a three-point bending test is performed on a spinel (mgal2o4) specimen having a rectangular cross section of height d = 3.8 mm and width b = 9 mm; the distance between support points is 25 mm. (a) compute the flexural strength if the load at fracture is 350 n. (b) the point of maximum deflection δy occurs at the center of the specimen and is described by

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals