A river is 4.1 km wide

A hunter wishes to cross a river that is 1. The hunter uses a small powerboat that moves at a maximum speed of 9.

What is the minimum time necessary for crossing? First Name.

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Your Response. Then in what direction must he swim to reach a point exactly opposite to the starting point bnd when. A boat propelled so as to travel with a speed of 0.

The river flows with a speed of 0. How long in seconds does it take the boat to. A motorboat heads due east at 8. What is the velocity of the boat relative to a stationary observer on the shore? If the river is m wide, how long does. A swimmer wishes to swim across a river m wide.

A boat starting on one side of the river heads to the south with a speed of 1. What is the resultant velocity to the side of the river? And if the river is 50 m wide calculate the. Find either by scale drawing or by calculation 1 the direction in which he must head is boat in. A boat travels at 3. The river flows at 1.

Find A The boat's resultant velocity. B How long it takes the boat to cross the river. C How far downstream the boat is when it.

A river 1. A woman leaves from a point on the river bank. The woman rows a boat 1. Her speed in still water is 2. A river flows toward the East at 1.

Steve can swim 2. If he wishes to cross the river so that his direction is northward, what direction relative to the water must he swim? A lifeguard who can swim at 1.

a river is 4.1 km wide

If the current in the river is 0. You can view more similar questions or ask a new question.First Name. Your Response. A boat propelled so as to travel with a speed of 0. The river flows with a speed of 0.

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How long in seconds does it take the boat to. A motorboat heads due east at 8. What is the velocity of the boat relative to a stationary observer on the shore? If the river is m wide, how long does. A boat starting on one side of the river heads to the south with a speed of 1. What is the resultant velocity to the side of the river? And if the river is 50 m wide calculate the. You are riding in a boat whose speed relative to the water is 7.

Relative Velocity and Riverboat Problems

The boat points at an angle of Find the time it takes for the boat to reach the opposite shore if the river is. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the. Find either by scale drawing or by calculation 1 the direction in which he must head is boat in. A rowboat crosses a river with a velocity of 3.

The river is 0. How far upstream is the boat when it reaches. A boat travels at 3. The river flows at 1. Find A The boat's resultant velocity. B How long it takes the boat to cross the river.

C How far downstream the boat is when it. A river flows toward 90 degrees.

a river is 4.1 km wide

What is the velocity of the current?Our planet is full of extremes; some of which have already been discovered, while some are waiting for their big moment. Right from the tallest mountain in the world to the deepest-known point of the planet, we have used almost all the superlatives known to us, to describe the wonders of the natural world.

Or have we?

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Would you like to write for us? Well, we're looking for good writers who want to spread the word. Get in touch with us and we'll talk Almost everybody knows that the Amazon is the largest river in the world.

It also boasts of being one of the longest river in the world at 3, miles; second only to river Nile of Africa 4, miles.

That again is a subject of debate with some sources putting the length of Amazon at a whopping 4, miles. Other than the fact that it is the largest and one of the longest rivers in the world, the Amazon also boasts of being the widest river in the world measuring a decent 7 miles at various places along its course. When we talk of 7 miles, we are talking about the width of Amazon during the dry season.

In contrast, during the wet season, when the river swells and floods the Amazon forest, it has a width of around 25 miles at some places. When the Amazon forest floor is flooded, species like the Amazon river dolphin Inia geoffrensis and tucuxi Sotalia fluviatilis are seen swimming around the trees.

The river is at its widest at its mouth where it meets the Atlantic Ocean in Brazil. At this point, the main stream of the Amazon is miles wide.

Widest River in the World

It is difficult to believe that a river can be so wide unless you come across the funnel-shaped indentation caused by it along the southeastern coastline of South America. In the inner part, this river is a mere 1. The mile long river forms the border between Argentina and Uruguay. The capital city of Argentina, Buenos Aires is situated on the western banks of this river. That explains the mixture of freshwater and seawater in this water body. One also has to make a note of the fact that, saltwater being denser than freshwater tends to settle at the base and therefore, one may not even realize that saltwater exists beneath the top layer of freshwater in this water body.

It may sound unbelievable, but the widest road in the world has a total of 22 lanes! Continue reading to find out more about this Series highway in Canada. Often, while crossing or walking by a river, sometimes, the mind wonders which could be the longest river in the world. Well, here you will find out an all-inclusive answer…. An aircraft with the ability to clock speeds in excess of miles per hour! We are talking about the fastest plane in the world, the Lockheed SR Blackbird.

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It is mandatory to procure user consent prior to running these cookies on your website. Like it? Share it! Let's Work Together! Related Posts Widest Road in the World It may sound unbelievable, but the widest road in the world has a total of 22 lanes!

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Longest River in the World Often, while crossing or walking by a river, sometimes, the mind wonders which could be the longest river in the world.How many droplets of water are in a river that is km long, m wide, and 29 m deep? Assume a droplet is 1 milliliter. Note: one liter equals one cubic decimeter and 10 decimeters equals 1 meter. Express you answer in scientific notation.

First Name. Your Response. How have humans negatively impacted the water system of Arkansas? Select all that apply a. Chemicals and runoff from industry harm wildlife. Too much trade along. A child, who is 45 m from the bank of a river is being carried downstream by the river's swift current of 1.

As the child passes a lifeguard on the river's bank, the lifeguard starts swimming in a straight line until she. A boat propelled so as to travel with a speed of 0.

The river flows with a speed of 0. How long in seconds does it take the boat to. If the missouri river is 2, miles long, how long is the mississippi river? Two firms, A and B, each currently dump 50 tons of chemicals into the local river. The government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. A camper wants to know the width of a river. From point A, he walks downstream feet to point B and sights a canoe across the river.

About how wide is the river? The basic function of the carburetor of an automobile is to atomize the gasoline and mix it with air to promote rapid combustion. As an example, assume that A biologist wants to know the width w of a river so that instruments for studying the pollutants in the water can be set properly.A hunter wishes to cross a river that is 1.

The hunter uses a small powerboat that moves at a maximum speed of 9. What is the minimum time necessary for crossing? First Name. Your Response. Then in what direction must he swim to reach a point exactly opposite to the starting point bnd when. A boat propelled so as to travel with a speed of 0. The river flows with a speed of 0.

How long in seconds does it take the boat to. A motorboat heads due east at 8. What is the velocity of the boat relative to a stationary observer on the shore? If the river is m wide, how long does.

A swimmer wishes to swim across a river m wide. A boat starting on one side of the river heads to the south with a speed of 1. What is the resultant velocity to the side of the river? And if the river is 50 m wide calculate the. Find either by scale drawing or by calculation 1 the direction in which he must head is boat in. A boat travels at 3. The river flows at 1. Find A The boat's resultant velocity.On occasion objects move within a medium that is moving with respect to an observer. For example, an airplane usually encounters a wind - air that is moving with respect to an observer on the ground below.

As another example, a motorboat in a river is moving amidst a river current - water that is moving with respect to an observer on dry land.

In such instances as this, the magnitude of the velocity of the moving object whether it be a plane or a motorboat with respect to the observer on land will not be the same as the speedometer reading of the vehicle. Motion is relative to the observer. The observer on land, often named or misnamed the "stationary observer" would measure the speed to be different than that of the person on the boat. The observed speed of the boat must always be described relative to who the observer is.

To illustrate this principle, consider a plane flying amidst a tailwind. A tailwind is merely a wind that approaches the plane from behind, thus increasing its resulting velocity.

The resultant velocity of the plane that is, the result of the wind velocity contributing to the velocity due to the plane's motor is the vector sum of the velocity of the plane and the velocity of the wind. This resultant velocity is quite easily determined if the wind approaches the plane directly from behind. Since a headwind is a wind that approaches the plane from the front, such a wind would decrease the plane's resulting velocity.

This is depicted in the diagram below. Now what would the resulting velocity of the plane be? This question can be answered in the same manner as the previous questions. The resulting velocity of the plane is the vector sum of the two individual velocities.

To determine the resultant velocity, the plane velocity relative to the air must be added to the wind velocity. This is the same procedure that was used above for the headwind and the tailwind situations; only now, the resultant is not as easily computed. Since the two vectors to be added - the southward plane velocity and the westward wind velocity - are at right angles to each other, the Pythagorean theorem can be used.

This is illustrated in the diagram below. In this situation of a side wind, the southward vector can be added to the westward vector using the usual methods of vector addition.

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The magnitude of the resultant velocity is determined using Pythagorean theorem. The algebraic steps are as follows:. The direction of the resulting velocity can be determined using a trigonometric function.

Since the plane velocity and the wind velocity form a right triangle when added together in head-to-tail fashion, the angle between the resultant vector and the southward vector can be determined using the sine, cosine, or tangent functions. The tangent function can be used; this is shown below:. If the resultant velocity of the plane makes a Like any vector, the resultant's direction is measured as a counterclockwise angle of rotation from due East. The effect of the wind upon the plane is similar to the effect of the river current upon the motorboat.

Physical features

If a motorboat were to head straight across a river that is, if the boat were to point its bow straight towards the other sideit would not reach the shore directly across from its starting point. The river current influences the motion of the boat and carries it downstream.The geology and physical geography of the Mississippi drainage area are essentially those of the Interior Lowlands and Great Plains of North America.

Fringes also touch upon the Rocky and Appalachian mountain systems and upon the rim of the Canadian Laurentian Shield to the north. The most significant contributory area in recent times has been to the west of the river.

Rising in western uplands, notably in the foothills of the Rockies, rivers such as the RedArkansasKansasPlatteand Missouri remove considerable silt loads from the rolling expanses of the Great Plains. These tributaries meander and braid across a wide, gently sloping mantle of unconsolidated materials, laid down over rock beds of the Cretaceous Period i.

The sandy sediments, moreover, offer little resistance to erosionso that many of these rivers are only braided in their courses. Most of this group, including the KentuckyGreenCumberlandand Tennessee rivers, flows via well-defined valleys into the Ohio and thence into the Mississippi.

a river is 4.1 km wide

The erosive capacity of these rivers varies in relation to the geologic structure of their basins. These consist of harder rocks in the higher elevations and a softer sill of limestone of the Late Carboniferous Period i.

The third contributory area of the Mississippi also differs from the other two. The upper Mississippi gathers its strength in a region marked by glacial action. After the great ice sheets of the Wisconsin Glacial Stage had put down layers of debris across much of MinnesotaWisconsin, northern Illinois, and northern Iowahuge quantities of meltwater flowed south, washing channels through this debris.

a river is 4.1 km wide

Today the upper Mississippi and its tributaries, the WisconsinSt. CroixRockand Illinois rivers, all trace the lines of these former sluiceways. Pouring southward, the glacial meltwaters were joined by the proto-Missouri and Ohio rivers. The combined waters then enlarged the great north-south trough along which the lower Mississippi now flows.

Some 1, miles 1, km long, this trough is 25 to miles 40 to km wide and bounded by escarpments rising up to feet 60 metres above the valley floor. Geologic studies have revealed that the floor of the glacial trough was later buried by a deep layer of material washed out from an ice sheet and dumped to a thickness of to feet 30 to 90 metres in the central section. There, at the tip of the drainage funnel, millions of years of sedimentation have spilled out across the floor of the Gulf of Mexicoforming cones of sediment that total mi in radius and 30, square miles 77, square km in area.

The surface expression of the many sub-deltas is the Mississippi delta, with an area exceeding 11, square miles 28, square km. Stretching its distributaries into the gulfthe Mississippi once delivered some million tons of sediment there each year, most of it as silt.

Today, however, much of this silt is captured behind upstream damscausing the delta to erode and shrink in area. This is especially damaging in the delta, where annual silt additions from flooding help to keep it from being eroded by waves. Precipitation sources are low-level moisture from the Gulf of Mexico and some low-level and high-level moisture from the Pacific Ocean. Winter and spring precipitation occurs in the vicinity of easterly and southerly fronts and storms.

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Average monthly precipitation in winter ranges from 5 inches mm or more in the south to more than 3 inches 75 mm over much of the Ohio River basin to less than 1 inch 25 mm over the western and northern Great Plains. Summer and early autumn rainfall occurs mostly as showers and isolated thunderstorms and weaker frontal storms.

Average monthly rainfall ranges from six inches in southern Louisiana and over the mountains of Tennessee and North Carolina to only two or three inches over the Great Plains.

The climate is humid over the eastern half of the basin, with large quantities of winter and spring runoff generated over the Tennessee, Ohio, and southern Mississippi river basins. A north-south band of subhumid climates, neither fully humid nor semiarid, extends from central Texas northward to eastern North Dakota. To the west are the semiarid climates of the Great Plains, and along the Rocky Mountain crests an alpine climate prevails, in which winter snowfalls are released as spring and early summer meltwater runoff.

It is not surprising that the hydrology of so powerful a river as the Mississippi has been the subject of intense study.


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