4 years ago

The four stages of tehniclogical design

1 answer:

6 0

The steps are: identify a problem, research the problem, generate possible solutions, select the best solution, create a model, test the model, refine and retest the model as needed, and then communicate the final solution.

Hope this helps! :3

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What is the binding energy of one mole of if the mass defect is 1.908 g/mol?

Scilla [17]

Do 6.022x10^23 - 1.908

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3 years ago

Five hundred (500) milliliters of sodium chloride 0.9% is prescribed to be given over 4 hours using a volumetric pump. What's th

Angelina_Jolie [31]

Given:

Volume of 0.9% NaCl = 500 ml

Time (t) = 4 hrs

To determine:

The infusion rate of NaCl in ml/hr

Explanation:

Based on the information- 500 ml of NaCl is to be given over a time span of 4 hrs

Hence, the volume of NaCl to be administered per hr is:-

= 1 hr * 500 ml/4 hr = 125 ml

Ans: Infusion rate = 125 ml/hr

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4 years ago

Why are changes in phase physical changes?

ehidna [41]

Weathering and chemical substance weathering

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3 years ago

If two gases are present in a container, the total pressure in the container is equal to

qwelly [4]

Answer: sum of the pressure of the two gases present.

Explanation:

According to Dalton's law, the total pressure of a mixture of gases is the sum of individual pressures exerted by the constituent gases.

$p_{total}=p_A+p_B$

For example if there are there are two gases hydrogen and oxygen with individual pressure of 30 and 20 atm each. Then the total pressure in the container will be:

$p_{total}=p_{H_2}+p_{O_2}$

Thus $p_{total|=30atm+20atm$

$p_{total}=50atm$

Thus if two gases are present in a container, the total pressure in the container is equal to sum of the pressure of the two gases present.

5 0

3 years ago

A block of wood has a volume of 60 cm^3 and a mass of 240 grams calculate its density.

AlekseyPX

Answer:

4 g/cm³

Explanation:

Volume(V) = 60 cm³

mass (m) = 240 gm

density (d) = ?

We know density is defined as mass per unit volume so

d = m / v

= 240 / 60

= 4 g/cm³

Hope it will help

3 0

3 years ago