What is upstream downstream problem?

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Downstream/Upstream: In water, the direction along the stream is called downstream. And, the direction against the stream is called upstream. If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then: Speed downstream = (u + v) km/hr.

How do you calculate upstream and downstream?

Let ‘u’ be the speed of the boat downstream and ‘v’ be the speed of the boat upstream. Consider the following formula 1/2 [Downstream speed + Upstream speed]. Therefore, 1/2 [u+ v] = speed of the boat in still water.

What is upstream and downstream in river boat problems?

Upstream- When the boat is flowing in the opposite direction of the stream, it is called Upstream. Downstream- When the boat is flowing in the same direction as the stream, it is called Downstream. Still Water- When the water is stationary i.e. not flowing then the speed of water is zero.

What does upstream mean in physics?

However, when the boat goes in the opposite direction as that of the stream or the river, it is what we call the upstream motion. In the downstream motion, the boat and the water move in the same direction and thus the speed is more than what it will be when the two are moving opposite to each other.

What is the difference between upstream and downstream approach?

Upstream services focus on macro level factors such as structures that impact health whereas downstream services focus on providing equitable access to care.

What is meant by upstream and downstream?

Simply put, upstream works include the exploration and production of crude oil and natural gas, whilst downstream refers to the processes applied after extraction through to it being delivered to the customer in whatever format required.

What is upstream and downstream pressure?

They can be related to pressure drop through a flow device, such as a valve, strainer, flow meter, elbow, straight pipe section, etc. The region with the higher pressure is upstream while the region with the lower pressure is downstream.

How do you calculate the speed of a river current?

Find the surface water velocity (in m/s) by dividing the distance from AA to BB (in this example, 10 m) by the average time (in seconds) and multiply this result by 0.85 (a correction factor) to estimate the average water velocity of the stream. Average water velocity = 0.5 m/s x 0.85 = 0.425 m/s.

How do you find speed when given distance and time?

You can find the average speed of an object if you know the distance travelled and the time it took. The formula for speed is speed = distance ÷ time.

How do you solve upstream and downstream questions in class 10?

  1. Upstream = (u−v) km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
  2. Downstream = (u+v)Km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
  3. Speed of Boat in Still Water = ½ (Downstream Speed + Upstream Speed)

What is the speed of the boat in downstream?

The speed of boat downstream is equal to the sum of the speed of the boat in still water and speed of the stream .

What is the formula of speed of boat in still water?

Boat’s speed in still water = ½ (Upstream speed + downstream speed) = ½ (40 + 60) = 50 miles/ hr. Now we are in stage of using the average speed formula.

How do you calculate upstream and downstream pressure?

When you get to the valve outlet you know p2, the pressure immediately downstream of the valve. The actual pressure drop across the control valve is the difference between the upstream and the downstream pressures, that is Δp = p1 – p2.

Is upstream positive or negative?

The nucleotides in the upstream region are negatively numbered. The nucleotides in the downstream region are positively numbered. It has regions that help in the initiation and regulation of transcription.

What is upstream and downstream in instrumentation?

The upstream section is related to the face which is in front of the inside of the instrument while the downstream section faces the outside of the instrument. The introduction of these two sections will be useful to define the output sections for the airflow.

What would be an example of a downstream effect?

Latinos then face “downstream” effects. These are heart disease, stroke, cancer, diabetes, respiratory conditions, obesity, arthritis, pedestrian fatalities, and more. In fact, more than 87% of U.S. deaths are due to chronic diseases.

What are upstream and downstream determinants?

Upstream determinants are those that occur at the macro level and include global forces and government policies. Midstream determinants are intermediate factors such as health behaviours while downstream determinants occur at the micro level and include one’s genetics1.

What is an example of a downstream intervention?

Downstream interventions are those focused on change or support for individuals and include primary prevention. Examples include communication strategies, health information and behaviour change campaigns.

What is upstream and downstream impact?

Upstream is everything that went into the production of that product before it got to you, the consumer, including the extraction of natural resources, the manufacturing, the transportation, etc. Downstream is everything that happened to that product after you disposed of it.

What are downstream activities?

What Are Downstream Operations? Downstream operations are the processes involved in converting oil and gas into the finished product. These include refining crude oil into gasoline, natural gas liquids, diesel, and a variety of other energy sources.

What are the downstream applications?

Downstream applications are references to a direction as it applies to the genetic codes in RNA or DNA strands. It is one of the premier manipulation steps beginning with a biological sample. The process involves creating a DNA microarray sample intended for genotyping and further analytical purposes.

What is the difference between upstream and downstream in supply chain?

The upstream portion of the supply chain includes the organization’s suppliers and the processes for managing relationships with them. The downstream portion consists of the organizations and processes for distributing and delivering products to the final customers.

What is upstream and downstream in pumps?

Upstream means that the object is going opposite to the flow of the river. In this case you have to subtract the speed of the given object in still water from the speed of flow of the stream. Downstream means that the object is flowing along the river and in this case you have to add the speed.

What is a downstream pressure?

The downstream pressure after an obstacle will always be lower than the upstream pressure, producing a pressure drop across the obstacle cum flow element. All these types of flow elements are differential producers and require a DPT to measure the pressure drop and convert it to a compatible linear signal.

How do we calculate the flow rate?

Distance (or length) divided by Time equals Rate. Rate is the flow rate or speed of the water, using the unit “meters per second.

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