A rock accelerates down a hill at 7 m/s2 with a force of 30.0 N. What is the mass of the rock?

Ared apple is illuminated by a blue light the apple will appear

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d