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2 years ago

The message refers to which of the following?

1 answer:

7 0

The message is the information being communicated from one place to another.

It used to be called the "intelligence". But as time went on, it became
harder to ignore the obvious fact that that was going too far, and the
label was changed to the more IQ-neutral "message".

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Newton’s law of cooling states that dx dt = −k(x−A) where x is the temperature,t is time, A is the ambient temperature, and k &g

lys-0071 [83]

Answer:

a) $X= kA_o\dfrac{1}{k^2+\omega^2}\left ( kcos\omega t+\omega sin\omega t \right )+Ce^{-kt}$

b)Does not affect the long term.

Explanation:

Given that

$\dfrac{dx}{dt}=-k(x-A)$

A = A0 cos(ωt)

$\dfrac{dx}{dt}=-k(x-A_o cos(\omega t))$

$\dfrac{dx}{dt}+kx=kA_o cos(\omega t)$

This is linear equation so integration factor ,I

$I=e^{\int kdt}$

$I=e^{kt}$

Now by using linear equation property

$e^{kt} X=\int e^{kt} kA_o cos(\omega t) dt +C$

$e^{kt} X= kA_o \dfrac{e^{kt}}{k^2+\omega^2}\left ( kcos\omega t+\omega sin\omega t \right )+C$

$X= kA_o\dfrac{1}{k^2+\omega^2}\left ( kcos\omega t+\omega sin\omega t \right )+Ce^{-kt}$

at t= 0

$X(0)=\dfrac{k^2A_o}{\omega^2+k^2}+C$

$X= kA_o\dfrac{1}{k^2+\omega^2}\left ( kcos\omega t+\omega sin\omega t \right )+e^{-kt}\times \left ( X(0)-\dfrac{k^2A_o}{\omega^2+k^2} \right )$

So the initial condition does not affect the long term.

5 0

3 years ago

An object is 9.00 cm tall. The image is 5.76 cm tall, and 14 cm

zubka84 [21]

Answer:

i would say 9.00 or 5.76

Explanation:

8 0

2 years ago

Question in picture.

Ber [7]

The answers are to small to see.

4 0

2 years ago

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A neutral atom of uranium (U) has 146 neutrons and a mass number of 238. How many protons does it have?

BARSIC [14]

Answer:

92 protons

Explanation:

The mass number is 238 , so the nucleus has 238 particles in total, including 146 neutrons. So to calculate the number of neutrons we have to subtract: 238 − 146 = 92

4 0

2 years ago

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What is a Geographic test

Genrish500 [490]

It's a test on Geography!

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2 years ago

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