Afisherman notices that wave crests pass the bow of his anchored boat every 4.4 s. he measures the distance between two crests to be 9.5 m. how fast are the waves traveling?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.