Acontainer ship is traveling westward at a speed of 5 m/s. the waves on the surface of the ocean have a wavelength of 40 m and are traveling eastward at a speed of 16.5 m/s. at what time intervals does the ship encounter the crest of a wave? a. 1.9 b. 2.3 c. 1.4 d. 2.2

(16.5 m/s + 5 m/s) ÷ (40 m) = 0.5375 Hz

1 ÷ 0.5375 Hz = 1.86 s

round up and you get 1.9 s, so the answer would be A.

Option (a) is the correct answer.

Explanation:

It is known that frequency is velocity or speed divided by wavelength.

Mathematically,       f =

where          v = speed or velocity

                  = wavelength

Therefore, total speed of ship will be (5 + 16.5) m/s = 21.5 m/s. Firstly calculate the frequency as follows.

                       f =

                         =    

                         = 0.537 Hz

Also it is known that frequency is inversely proportional time. Hence calculate the time interval of ship encountering the crest of a wave as follows.

                      f =

 or,               T =

                        =

                        = 1.86 s

                        = 1.9 (approx)

Thus, we can conclude that time intervals at which the ship encounter the crest of a wave is 1.9 s.

the supermassive black hole is in the middle of the galaxy.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation: