Walt ran 5 km in 25 minutes going east to what was his average velocity

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

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.