Astack of books is sitting on a table. what force is pulling downward on it

Why cooking gas has a typical smell

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors