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belka [17]
3 years ago
8

How does specific heat affect the rate at which an object changes temperature

Physics
2 answers:
OverLord2011 [107]3 years ago
6 0
<span>How does specific heat affect the rate at which an object changes temperature </span>All else being equal,* rate of heat transfer is proportional to the square of the temp difference between source and sink. Given a step change in input, heat transfer will change abruptly; then the rate of transfer will gradually decrease as source and sink temperatures approach each other. Ideally the rate of transfer will go asymptotically to zero as the source and sink attain equal temperatures. In a real system it will go to some stable minimum as heat leaks in/out in various directions. 

<span>Since a sink with lower thermal capacity (specific heat x mass) will require less heat input for a given temperature change, heat transfer in such a system will drop off more quickly than it would in one with higher thermal capacity -- the reverse of what you're proposing. At the same time, the system will reach steady-state faster because there's less total heat in the system. </span>

Once a system has stabilized in steady-state, thermal capacity is no longer an issue.
stira [4]3 years ago
5 0
If it is lower, it heats faster, if it's higher, it takes longer to heat.
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brilliants [131]

Answer:

the answers the correct one is d

Explanation:

The speed of sound is constant so we can use the relations of uniform motion

           v = x / t

            x = v t

now let's calculate the distance for each person

t = 5s

         x₁ = 300 5

         x₁ = 1500 m

t = 6s

         x₂ = 300 6

         x₂ = 1800 m

therefore we have two possibilities

a) the two people are on the same side, therefore the distance between them is

         Δx = x₂- x₁

         Δx = 1800 - 1500

         Δx = 300 m

       

let's reduce to km

         Δx = 0.300 km

b) people are on opposite sides of the sound

         Δx = x₂ + x₁

         Δx = 1800 + 1500

         Δx = 3300 m

         Δx = 3.3 km

when checking the answers the correct one is d

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2 years ago
What simple machines combine to make a shovel which is a compound
IRINA_888 [86]
B) lever and pulley is the answer
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3 years ago
The average intensity of light emerging from a polarizing sheet is 0.708 W/m2, and that of the horizontally polarized light inci
Pachacha [2.7K]

Answer:

Angle θ = 30.82°

Explanation:

From Malus’s law, since the intensity of a wave is proportional to its amplitude squared, the intensity I of the transmitted wave is related to the incident wave by; I = I_o cos²θ

where;

I_o is the intensity of the polarized wave before passing through the filter.

In this question,

I is 0.708 W/m²

While I_o is 0.960 W/m²

Thus, plugging in these values into the equation, we have;

0.708 W/m² = 0.960 W/m² •cos²θ

Thus, cos²θ = 0.708 W/m²/0.960 W/m²

cos²θ = 0.7375

Cos θ = √0.7375

Cos θ = 0.8588

θ = Cos^(-1)0.8588

θ = 30.82°

4 0
3 years ago
Which method determines the relative age of Earth's sedimentary layers based on their organization?
MrRa [10]

Answer:

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