4. An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What are its atomic number, atornic mass, and net charge? A. atomic number = 26, atomic mass = 56, net charge = 3+
B. atomic number = 26, atomic mass = 56, net charge = 3-
C. atomic number = 30, atomic mass = 56, net charge = 3+
D. atomic number = 56, atomic mass = 26, net charge = 3-

Brades exam guidelines exam instructions billing & payments & support question 6 of 20 : select the best answer for the question use this illustration to answer the question below. forms & resources al programs 9 ww linics 6. in the circuit shown in the figure above, suppose that the value of r, is 100k, and the value of r2 is 470 kq. at which of the following locations in the circuit would you measure the highest voltage with your meter? rvices 999999 a. between points b and c b. between points a and b c. between points b and e d. between points a and c eredu mark for review (will be highlighted on the review page) mend < < previous question next question

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

Why would an orange roll of your cafeteria tray if you stopped suddenly