Knowee
Questions
Features
Study Tools

A river is 6 metres wide and is flowing at a uniform velocity of 2𝑚/𝑠. The depth of a crosssection of the river, measured at 1𝑚 intervals, is given in metres as:0 1.5 2 2.8 2.8 1.9 0Use Simpson’s rule to approximate the rate of flow of the river, that is, the rate of change ofvolume

Question

A river is 6 metres wide and is flowing at a uniform velocity of 2𝑚/𝑠. The depth of a crosssection of the river, measured at 1𝑚 intervals, is given in metres as:0 1.5 2 2.8 2.8 1.9 0Use Simpson’s rule to approximate the rate of flow of the river, that is, the rate of change ofvolume

🧐 Not the exact question you are looking for?Go ask a question

Solution

To solve this problem, we will use Simpson's rule, which is a method for numerical integration. The formula for Simpson's rule is:

∫(a to b) f(x) dx ≈ (b - a) / 6 * [f(a) + 4f((a+b)/2) + f(b)]

The rate of flow of the river is given by the cross-sectional area multiplied by the velocity of the river. The cross-sectional area can be approximated using Simpson's rule.

The given depths at 1m intervals are: 0, 1.5, 2, 2.8, 2.8, 1.9, 0.

We can divide these into three sections: [0, 1.5, 2], [2, 2.8, 2.8], and [2.8, 1.9, 0].

Applying Simpson's rule to each section:

Area1 = 1/6 * [f(0) + 4f(1.5) + f(2)] = 1/6 * [0 + 41.5 + 2] = 1.5 m^2 Area2 = 1/6 * [f(2) + 4f(2.8) + f(2.8)] = 1/6 * [2 + 42.8 + 2.8] = 3.2 m^2 Area3 = 1/6 * [f(2.8) + 4f(1.9) + f(0)] = 1/6 * [2.8 + 4*1.9 + 0] = 2.3 m^2

The total area is the sum of these, which is 1.5 + 3.2 + 2.3 = 7 m^2.

The rate of flow of the river is then the total area multiplied by the velocity, which is 7 m^2 * 2 m/s = 14 m^3/s.

So, the approximate rate of flow of the river is 14 cubic meters per second.

This problem has been solved

Similar Questions

A river is 6 metres wide and is flowing at a uniform velocity of 2𝑚/𝑠. The depth of a cross section of the river, measured at 1𝑚 intervals, is given in metres as:0 ,1.5 ,2 ,2.8 ,2.8 ,1.9, 0. Use the trapezium rule to approximate the rate of flow of the river, that is, the rate of change of volume。

The river has been measured and you are given the following dimensions and velocity readings. Calculate the overall water flow.

The speed of a swimmer is 4 km h−14 km h-1 in still water. If the swimmer makes his strokes normal to the flow of river of width 1 km1 km, he reaches a point 750 m750 m down the stream on the opposite bank. The speed of the river water is

When measuring water flow the equation is Q=AV, with Q meaning water flow, A meaning area, and V meaning velocity. On the exam, you will be given enough information to calculate the river's area and the river's average velocity. Water Flow ExampleThe river has been measured and you are given the following dimensions and velocity readings. Calculate the overall water flow. Average depth is (1.5 + 2.4 + 5.1 + 4.7 +1.2)/5 = 15/5= 3ftCross-sectional area is 3ft X 32ft = 96 ft2Average Velocity is (12.1+10.2+7.5+8.2+11.4)/5 = 9.88 ft/m       Q=AVQ= 96 ft2 X 9.88 ft/mWater Flow = 948.48 ft3 /min

A man can swim at the rate of 5kmh−1 in still water. A 1−km wide river flows at the rate of 3 km h−1. The man wishes to swim across the river directly opposite to the starting point. How much time will he take to cross the river

1/2

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.