The fuel plates in a nuclear reactor are 4 ft long and stacked with a 1/2-in. gap between them. the heat flux along the plate surfaces varies sinusoidally according to the equation where α-250 btwh ft. β-1500 btwh ft, x is the distance from the leading edge of the plates, and l is the total plate length. if air at 120°f, 80 psi, flowing at a mass velocity of 6000ibm/hft2, is used to cool the plates, prepare plots showing a. the heat flux vs. x b. the mean air te 19.5 given the information in problem 19.4, determine the total heat transferred for a stack of plates with a combined surface area of 640 ft, each plate being 4 ft wide.

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.