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3 years ago

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All living organisms reproduce by a live functioning baby leaving the mother's body.

1 answer:

algol133 years ago

4 0

Answer:

there is no question

Explanation:

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A transmission system at a radio station uses a/an _______ to convert a direct current into a high frequency alternating current

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A transmission system at a radio station uses an oscillator to convert a direct current into a high frequency alternating current. Direct current or DC is the current in which the flow of the charge is one directional. In case of alternating current or AC, the flow of the charge reverses direction after a period of time.
<span>In regards to the second question, a unit for measuring frequency is the hertz. So the correct answer to the given question is option “B”. </span>

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4 years ago

Read 2 more answers

If a cup of coffee has temperature 95∘C95∘C in a room where the temperature is 20∘C,20∘C, then, according to Newton's Law of Coo

lina2011 [118]

Answer:

T = 76.39°C

Explanation:

given,

coffee cup temperature = 95°C

Room temperature= 20°C

expression

$T( t ) = 20 + 75 e^{\dfrac{-t}{50}}$

temperature at t = 0

$T( 0 ) = 20 + 75 e^{\dfrac{-0}{50}}$

T(0) = 95°C

temperature after half hour of cooling

$T( t ) = 20 + 75 e^{\dfrac{-t}{50}}$

t = 30 minutes

$T( 30 ) = 20 + 75 e^{\dfrac{-30}{50}}$

$T( 30 ) = 20 + 75 \times 0.5488$

T(30) = 61.16° C

average of first half hour will be equal to

$T = \dfrac{1}{30-0}\int_0^30(20 + 75 e^{\dfrac{-t}{50}})\ dt$

$T = \dfrac{1}{30}[(20t - \dfrac{75 e^{\dfrac{-t}{50}}}{\dfrac{1}{50}})]_0^30$

$T = \dfrac{1}{30}[(20t - 3750e^{\dfrac{-t}{50}}]_0^30$

$T = \dfrac{1}{30}[(20\times 30 - 3750 e^{\dfrac{-30}{50}} + 3750]$

$T = \dfrac{1}{30}[600 - 2058.04 + 3750]$

T = 76.39°C

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4 years ago

A parallel circuit containing two bulbs and a bell has three paths for the current flow. If the first bulb in the circuit burns

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Since the circuit is in parallel there will be no effect on the other loads.

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Difference betwwen Acclerat<br>ion and retradation

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