The gravitational field strength on the moon is 1.63 N/kg. If a rock on the moon weighs 2000N, how much does the same rock weigh on the earth?

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

Place me with this question is my last question

Consider an air-filled charged capacitor. how can its capacitance be increased?