Assume that the scale is in an elevator on earth. what force would the scale exert on 53kg person standing on it during situation speed is 2.0

An unknown substance has a melting point of 1064 ∘c, is insoluble in water, conducts electricity as a solid, and is hard. given these properties, which of the following are possible identities for the unknown substance? check all that apply. view available hint(s) check all that apply. sio2 f2 au kbr

In an experiment, how can i change human errors? be specific.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost