Calculate the mass of air in a room 5m × 4m ×2m given that the density of air is 1.3kgm-²

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

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The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.