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Vinvika [58]
3 years ago
8

If a cup of coffee is at 90°C and a person with a body temperature of 36'C touches it,how will heat flow between them

Physics
1 answer:
Arlecino [84]3 years ago
5 0

Answer:

the heat always transfers from high temperature to low temperature body without aid of any external energy to this law the heat transfers from cup of coffee to the person body until both bodies reaches to the equilibrium state    

Explanation:

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The equation of a transverse wave traveling along a string is 1 1 y (2.00 mm)sin[(20 m )x (600 s )t] − − = − Find the (a) amplit
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Answer:

a)Amplitude ,A = 2 mm

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Explanation:

Given that

y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

As we know that standard form of wave equation given as

y=A sin(\phi -\omega t)

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y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

So from above equation we can say that

Amplitude ,A = 2 mm

Frequency ,ω= 600 rad/s                     (2πf=ω)

ω= 2πf

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We know that speed is the rate of displacement

U=\dfrac{dy}{dt}

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U=1200\ cos[(20m^{-1})x-(600s^{-1})t]\ mm/s

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