Remote controls use invisible light of frequency just below the visible range. this part of the electromagnetic spectrum is called

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

How many atoms of nitrogen are in the chemical formula ni(w on