Refraction is the bending of a wave when it enters a medium where its speed is different. This phenomenon is explained by the conservation of energy and conservation of momentum.
Law of Conservation of energy states the total energy of an isolated system remains constant.
law of conservation of momentum states that in a closed system the total momentum is constant.
<span>In refraction, when a medium changes, the phase velocity also changes but its frequency does not; it remains constant. </span>
56 Newtons bc w=F×D so if you divide by D on both side you get w/D=F
Answer:
a). v=2776 m/s
Explanation:
The speed of the water droplet for the fish be successful is
Taking the distance in axis 'x' and 'y'

The time is the velocity in axis 'x' with the angle 70 so

Now using the time in terms of velocity the motion in axis 'y' can find the velocity to be the fish successful

<span># of protons + # of neutrons = atomic mass</span>
Given,
The initial inside diameter of the pipe, d₁=4.50 cm=0.045 m
The initial speed of the water, v₁=12.5 m/s
The diameter of the pipe at a later position, d₂=6.25 cm=0.065 m
From the continuity equation,

Where A₁ is the area of the cross-section at the initial position, A₂ is the area of the cross-section of the pipe at a later position, and v₂ is the flow rate of the water at the later position.
On substituting the known values,

Thus, the flow rate of the water at the later position is 5.99 m/s