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3 years ago

Identify how slip affects the strength of a metal

Engineering

1 answer:

Fiesta28 [93]3 years ago

5 0

My answer says there is a link but not,there isn’t so here a photo of my answer.

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Name 3 ways in which robots have improved since the Ebola outbreak.

Ostrovityanka [42]

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1. They have less malfunctions

2. They can be operated from afar

3. Some are self-operated.

Explanation:

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2 years ago

3) What kind of bridges direct their load along it's curve and into the

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3 years ago

What are practical considerations you might encounter when you increase the moment of inertia (I) while keeping the cross-sectio

Mrrafil [7]

Answer:

The answer is below

Explanation:

The practical considerations you might encounter when you increase the moment of inertia (I) while keeping the cross-sectional area fixed are:

1. Shapes of moment of inertia: Engineers should consider or know the different shapes of moment of inertia for different shape

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2 years ago

Consider a circular grill whose diameter is 0.3 m. The bottom of the grill is covered with hot coal bricks at 961 K, while the w

soldi70 [24.7K]

Answer:

Step 1

Given

Diameter of circular grill, D = 0.3m

Distance between the coal bricks and the steaks, L = 0.2m

Temperatures of the hot coal bricks, T₁ = 950k

Temperatures of the steaks, T₂ = 5°c

Explanation:

See attached images for steps 2, 3, 4 and 5

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2 years ago

A fuel cell vehicle draws 50 kW of power at 70 mph and is 40% efficient at rated power. You are asked to size the fuel cell syst

svetoff [14.1K]

Answer:

a) fuel cell weight and volume: 50 kg, 33.3 L

b) fuel tank weight and volume: 321 kg, 643 L

Explanation:

Fuel Cell

Delivery of 50 kW from a source with a power density of 1.5 kW/L requires a source that has a volume of ...

(50 kW)/(1.5 kW/L) = 33.3 L

The weight of the power source is 1 kW/kg, so will be ...

(50 kW)/(1 kW/kg) = 50 kg

Fuel Tank

400 miles at 70 mph will take (400/70) h ≈ 5.71429 h. In that time, the energy used by the vehicle power plant is ...

(50 kW)(5.71429 h)(3600 s/h) = 1028.57 MJ

Since the power plant is 40% efficient, it must be supplied with 2.5 times that amount of energy, or 2571.43 MJ.

The tank volume and mass will then be ...

volume = 2571.43 MJ/(4 MJ/L) = 642.9 L

mass = 2571.43 MJ/(8 MJ/L) = 321.4 kg

_____

Comment on fuel tank volume

It appears the fuel tank would need to be equivalent in size to a sphere about 1.1 m in diameter.

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3 years ago

Identify how slip affects the strength of a metal​

Identify how slip affects the strength of a metal