What does E=mc2 stand for?

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

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?