All categories

2 years ago

(b) The application of user centred design can lead to innovative products such as the umbrella shown in Figure 9.

Engineering

1 answer:

Angelina_Jolie [31]2 years ago

8 0

Answer:

the concept of user centred design is the idea of putting your clients best needs in mind. you need to be empathic and understanding of how to make their life easier. by doing research you can do this. for example the design in figure 9 shows an umbrella with a canopy. the canopy can deflect rain and still have the easy design of an umbrella. this makes it not only easier to use but functional.

Explanation:

i wrote this myself so copy it or just rewrite it, it doesnt matter

You might be interested in

What information does the api symbol or donut provide?.

kondor19780726 [428]

Answer:

The API "Donut" identifies oils that meet current API engine oil standards.

Explanation:

hope this helps :)

7 0

2 years ago

A 5 mm dia copper cable is insulated with a material of conductivity of 0.16 W/mK and is exposed to air at 30Â°C with a convecti

Kipish [7]

Answer:

t=5.5 mm

Heat dissipation per unit length = 90.477 W/m

Explanation:

Given that

Diameter d = 5 mm ⇒r = 2.5 mm

Conductivity of insulated material K = 0.16 W/mK

Heat transfer coefficient = 20 $\frac{W}{m^2K}$

When thickness reaches up to critical radius of insulation then heat dissipation will be maximum

We know that critical radius of insulation of wire is given as follow

$r_{c}=\dfrac{K_{insulation}}{h_{surrounding}}$

Now by putting the values

$r_{c}=\dfrac{0.16}{20}$

$r_{c}=8 mm$

So the thickness of insulation

t=8-2.5 mm

t=5.5 mm

As we know that heat transfer due to convection given as follows

Q = hAΔ T

Q=20 x 2 x π x 0.008 x (120-30)

Q = 90.477 W/m

So heat dissipation per unit length = 90.477 W/m

4 0

2 years ago

La fuerza necesaria para girar los birlos de una llanta es de 40 N, si se tiene una cruceta de 0.5m. ¿Cuál es el torque del birl

Anna35 [415]

To Find :

The torque of the stud.

Solution :

We know, torque can be calculated by force and distance between the center and force applied.

So,

$\tau = F\times R\\\\\tau = 40 \times 0.5 \ N .\ m\\\\\tau = 20 \ N .\ m$

Therefore, the torque on the stud is 20 N m .

6 0

2 years ago

Allura Red Moles

Ivanshal [37]

Answer:

Die of intoxication by water first

Explanation:

We assume that the weight of the man is 154.35 pounds which is 70 kg

LD50 water = 90g per kg

Maximum concentration = 90x70

= 6300grams

Convert grams to liters

6300/100

= 6.3 litres

From here we get amount of kool aid

6.3 x 1.97x10^-4

= 1.24x10^-3

= 1.24grams

1.24 grams is below 420 kool aid is lower than LD50 with about 6 grams for 1 kg (6x70kg = 420). So 420 is lethal dose. But 1.24 is less than this so the man has to die of water intoxication first.

8 0

2 years ago

A distillation column with a partial reboiler and a total condenser is being used to separate a mixture of benzene, toluene, and

marshall27 [118]

Answer:

See attached pictures.

Explanation:

Hello,

In this case, considering the given information and that the feed is a saturated liquid, the solution is shown on the attached pictures with the proper information and procedure.

Best regards.

7 0

2 years ago