Which statement about Niels Bohr's atomic model is true?
Higher orbits have lower energies.
Each orbit has a specific energy level.
Electrons can exist in any energy level.
Orbits close to the nucleus have no energy.

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.