The distance between a speaker and a listener is 8.0 m. Determine the frequency of the sound wave if exactly 20 waves are formed before sound reaches the listener.

Explanation:

Wavelength of a wave is length of a complete wave. length of complete wave is length of two closest  points on a wave which are having same phase . It may be distance between two consecutive crest or two troughs etc.

The length of 20 waves as per given data is 8 m .

length of one wave = 8 / 20

= 0.4 m .

wave length of sound = 0.4 m

frequency = velocity of sound / wave length

= 340 /.4

850 Hz .

what type of charge does it have? negative

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.