Trong thí nghiệm giao thoa sóng nước hai nguồn s1 s2 cách nhau 20 cm dao động cùng pha cùng tần số f = 1 cm

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

B) erini just took the test and it is correct

Answer: 1.4 seconds which is the third optionexplanation: current is defined as the flow of charge per timetherefore, the equation that relates current, charge and time can be expressed as follows: i = δq / δtwhere: i is the current given = 1.8 ampereδq is the charge given = 2.5 coulombδt is the time required for the flow of the given charges to give the 1.8 ampere.substitute with the givens in the above equation to get the time as follows: 1.8 = 2.5 / δtδt = 2.5 / 1.8 = 1.38888 which is approximately 1.4 secondshope this was !