9.31*10^3=_*10^5

please if you could explain it as well, i’m so confused and struggling

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Is a pencil falling to the floor anon contact force, a force, or a contact force