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3 years ago

What is the one change that golden expects to see in public transportation?

Engineering

1 answer:

Evgesh-ka [11]3 years ago

4 0

Answer:

cleanliness

Explanation:

Because its public trasportation, an about thousands of people use it, daily so you dont know what bacteria, or germs, are on the seat's, and handal's of the public transportation.

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One who is trained in math, science and physics in order to work in a branch of engineering

slava [35]

Mechanical engineer I’m pretty sure

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3 years ago

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Who wanna learn C# for free tell me

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I would would like to learn #c for free tell me

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3 years ago

Consider laminar, fully developed flow in a channel of constant surface temperature Ts. For a given mass flow rate and channel l

Lisa [10]

Answer:

Please see attachment.

Explanation:

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3 years ago

Two sites are being considered for wind power generation. On the first site, the wind blows steadily at 7 m/s for 3000 hours per

kirill [66]

Solution :

Given :

$V_1 = 7 \ m/s$

Operation time, $T_1$ = 3000 hours per year

$V_2 = 10 \ m/s$

Operation time, $T_2$ = 2000 hours per year

The density, ρ = $1.25 \ kg/m^3$

The wind blows steadily. So, the K.E. = $(0.5 \dot{m} V^2)$

$= \dot{m} \times 0.5 V^2$

The power generation is the time rate of the kinetic energy which can be calculated as follows:

Power = $\Delta \ \dot{K.E.} = \dot{m} \frac{V^2}{2}$

Regarding that $\dot m \propto V$ . Then,

Power $\propto V^3$ → Power = constant x $V^3$

Since, $\rho_a$ is constant for both the sites and the area is the same as same winf turbine is used.

For the first site,

Power, $P_1= \text{const.} \times V_1^3$

$P_1 = \text{const.} \times 343 \ W$

For the second site,

Power, $P_2 = \text{const.} \times V_2^3 \ W$

$P_2 = \text{const.} \times 1000 \ W$

5 0

3 years ago

How old are legos? Who created them? Why did they create them?

Sunny_sXe [5.5K]

“How old are the legos” 89 years old.

“Who created them?” Ole Kirk Christiansen.

“Why did they created them?” As a you man, Christiansen turned his love of whittling and playing with wood into a Business and, in 1916, he opened his own shop. Since times were so hard, Christiansen made the hard decision to use his wood to create inexpensive goods that might actually sell. Among them were Cheap toys.

Hope this helps•

Bye~

•Kate•

4 0

2 years ago