Which factors affect the strength of electric force between two charged objects

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

In a good thermo flask the main cause of heat loss is