The rigid beam bc is supported by rods (1) and (2). the cross-sectional area of rod (1) is 11 mm2. the cross-sectional area of rod (2) is 14 mm2. for a uniformly distributed load of w = 3.9 kn/m, determine the length a so that the normal stress is the same in each rod. assume l = 3.35 m.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.