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3 years ago

A wide-sense stationary process X(t) is the input to a linear system whose impulse response is h(t)=2e^(-7t), t≥0.

Engineering

1 answer:

zimovet [89]3 years ago

4 0

Answer:

The power spectral density of Y(t) is Syy(w) = $\frac{32}{(4+w^2)(16+w^2)}$

Explanation:

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Who invented a control unit for an artificial heart?<br> ements<br> ante

disa [49]

Otis Boykin is the answer.

6 0

3 years ago

Two piezometers have been placed along the direction of flow in a confined aquifer that is 30.0 m thick. The piezometers are 280

Dafna11 [192]

Answer:

time = 224 days

Explanation:

given data

thick = 30 m

piezometers = 280 m

head between two = 1.4 m

aquifer hydraulic conductivity = 50 m

porosity = 20%

solution

we get here average pole velocity that is get by using Darcy law that is

Va = $\frac{k}{\eta } \times \frac{\Delta h}{L}$ ................1

here Va is average pole velocity and k is hydraulic conductivity and $\eta$ is porosity

here v is = $k \times \frac{dh}{dl}$ ...........2

v = 50 × $\frac{1.4}{280}$

v = 0.25 m/day

and here average linear velocity Va will be

Va = $\frac{v}{\eta }$

Va = $\frac{0.25}{0.2}$

Va = 1.25 m/day

travel time for water will be

time = $\frac{280}{1.25}$

time = 224 days

8 0

2 years ago

An astronomer of 65 kg of mass hikes from the beach to the observatory atop the mountain in Mauna Kea, Hawaii (altitude of 4205

lara [203]

Answer:

$0.845\ \text{N}$

Explanation:

g = Acceleration due to gravity at sea level = $9.81\ \text{m/s}^2$

R = Radius of Earth = 6371000 m

h = Altitude of observatory = 4205 m

Change in acceleration due to gravity due to change in altitude is given by

$g_h=g(1+\dfrac{h}{R})^{-2}\\\Rightarrow g_h=9.81\times(1+\dfrac{4205}{6371000})^{-2}\\\Rightarrow g_h=9.797\ \text{m/s}^2$

Weight at sea level

$W=mg\\\Rightarrow W=65\times 9.81\\\Rightarrow W=637.65\ \text{N}$

Weight at the given height

$W_h=mg_h\\\Rightarrow W_h=65\times 9.797\\\Rightarrow W_h=636.805\ \text{N}$

Change in weight $W_h-W=636.805-637.65=-0.845\ \text{N}$

Her weight reduces by $0.845\ \text{N}$ .

8 0

3 years ago

The four strokes in a four stroke cycle engine in proper order.

Morgarella [4.7K]

Answer:

A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. The piston make two complete passes in the cylinder to complete one operating cycle.

Explanation:

6 0

2 years ago

What are difference between conic sectional and solids?

Murljashka [212]

Answer:

Conic Sections

a conic section is a curve which is obtained when a surface performs an intersection with a plane. The types of conic sections include hyperbola, parabola and ellipse. A circle can also be considered as a conic section.

Conic Solids on the other hand are the set of points on any segment between a region and a point which is not present in the plane of the base. They are solids with one base.

3 0

2 years ago