2 years ago

15. Whether technology is good or bad depends on how it is used.

Engineering

2 answers:

Reptile [31]2 years ago

4 0

Answer:

true

Explanation:

miskamm [114]2 years ago

4 0

Answer:

True

Explanation:

The internet is a very useful tool, but remember there are billions of people out there who would use it for good purpose or bad ones.

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A stainless steel ball (rho = 8055 kg/m3, cp = 480 J/kg·K) of diameter D = 0.21 m is removed from the oven at a uniform temperat

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3 years ago

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A well-established way of power generation involves the utilization of geothermal energy-the energy of hot water that exists nat

jeka94

Answer:

the maximum thermal efficiency is 29%

Explanation:

the maximum efficiency for a thermal engine that works between a cold source and a hot source is the one of a Carnot engine. Its efficiency is given by

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where

T2= absolute temperature of the cold sink (environment)= 20°C + 273 = 293

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3 0

3 years ago

The basic barometer can be used to measure the height of a building. If the barometric readings at the top and at the bottom of

bixtya [17]

Answer:

h = 287.1 m

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the density of mercury \rho =13570 kg/m3

the atmospheric pressure at the top of the building is

$p_t = \rho gh = 13570*908*0.73 = 97.08 kPa$

the atmospheric pressure at bottom

$p_b = \rho gh = 13570*908*0.75 = 100.4 kPa$

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we have also

$(\rho gh)_{air} = p_b - p_t$

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7 0

3 years ago