A skydiver has a mass of 65 kg.
Calculate the weight of the skydiver.

What is the kinetic energy of a 10-kg bicycle moving at 10 m/s

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

What are similarities and differences of reflection, refraction, diffraction and absorption?