a uniform steel beam has a mass of 940 kg. On it is a resting half of an identical beam. what is the vertical support force at each end

How to tell if a molecule is polar or nonpolar with electronegativity

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

What does si stand for,when referring to a system of measurement