Three charges are arranged as shown in the figure.

O -0.1 nC 3.8m--->O 18nC

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| -1.6m

O 4.7 nC

Find the magnitude of the electrostatic force on the charge at the origin. The value of the Coulomb constant is 8.98755 × 109 N · m2 /C 2 . Answer in units of nN

An object's buoyant force and weight mean the same thing.a. trueb. false

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air