Which of these is not shared by bohr's model and the modern atomic model?
a. both have electrons surrounding the atomic nucleus.
b. both have electrons that can move between energy levels.
c. both have an atomic nucleus containing protons and neutrons.
d. both have electrons that orbit the atomic nucleus in a similar way.

For which pair of objects would adding the same a

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?