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3 years ago

1. How does manufacturing help strengthen the economy?

1 answer:

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Answer: A vibrant manufacturing base leads to more research and development, innovation, productivity, exports, and middle-class jobs. Manufacturing helps raise living standards more than any other sector in the world. Manufacturing generates more economic activity than other sectors.

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Can the MOXIE created by NASA be used on earth

Alisiya [41]

Answer:

MOXIE is designed to generate up to 10 grams of oxygen per hour. This technology demonstration was designed to ensure the instrument survived the launch from Earth, a nearly seven-month journey through deep space, and touchdown with Perseverance on Feb

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3 years ago

I. Draw the velocity diagram for the instant shown and determine the velocity of

trapecia [35]

Answer:

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3 years ago

Forced air at T= 25ºC and V= 12 m/s is used to cool electronic elements on a circuit board. One such element is a chip, 4 mm ×4

tia_tia [17]

Answer:

The surface temperature of the chip 39.99°C

Explanation:

Assumptions

1. Steady state condition.

2. Power dissipated within the chip is lost by convection across upper surface only.

3. Chip surface is isothermal

4. The average heat transfer coefficient for the chip surface is equivalent to the local value x - L

Properties: from table. See attachment (4)

See attachment for complete solution to the problem

i had problem submitting the answer in the answer box

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3 years ago

It is well established that the thermal efficiency of a heat engine increases as the temperature TL at which heat is rejected fr

USPshnik [31]

Answer: No, not in favor of the idea.

This is because, an increase in the refrigerator's work output is equal to work input. In real live application, the work input of the refrigerator is always greater than the additional work output. This will result to reducing the efficiency of the power plant.

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3 years ago

How many joules are required to raise the temperature of a cubic meter of water by 10K?

kykrilka [37]

Answer:

4.186 × 10⁷ J

Explanation:

Heat gain by water = Q

Thus,

$m_{water}\times C_{water}\times \Delta T=Q$

For water:

Volume = 1 m³ = 1000 L ( as 1 m³ = 1000 L)

Density of water= 1 kg/L

So, mass of the water:

$Mass\ of\ water=Density \times {Volume\ of\ water}$

$Mass\ of\ water=1 kg/L \times {1000\ L}$

Mass of water = 1000 kg

Specific heat of water = 4.186 kJ/kg K

ΔT = 10 K

So,

$1000\times 4.186\times 10=Q$

Q = 41860 kJ

Also, 1 kJ = 1000 J

So, Q = 4.186 × 10⁷ J

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4 years ago