What is the power usage of device that uses 3.0A of current at a voltage of 120 V? How much energy ( in kilowatt-hours) does this device use if it is left on for 2.0hr?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.