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Liono4ka [1.6K]
3 years ago
13

What is the energy change when the temperature of 15.0 grams of solid silver is decreased from 37.3 °C to 20.5 °C ?

Engineering
1 answer:
Gala2k [10]3 years ago
8 0

Answer:

Q=58.716 W

Explanation:

Given that

mass ,m  = 15 g

The decrease in the temperature ,ΔT = 37.3 - 20.5  °C

ΔT = 16.8°C

We know that specific heat of silver ,Cp = 0.233 J/g°C

The energy change of the silver  is given as

Q = m Cp ΔT

Now by putting the values we get

Q= 15 \times 0.233\times 16.8\ W

Q=58.716 W

Therefore the change in the energy will be 58.716 W.

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Answer:

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Explanation:

Previous concepts

The cumulative distribution function (CDF) F(x),"describes the probability that a random variableX with a given probability distribution will be found at a value less than or equal to x".

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Part a

Let X the random variable of interest. We know on this case that X\sim Exp(\lambda)

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F(x) = \lambda \int_0^{\infty} e^{-\lambda x} dx= -e^{-\lambda x} \Big|_0^{\infty} = 1- e^{-\lambda x} \

Part b

Assuming that X \sim Exp(\lambda =0.1), then the density function is given by:

f(x) = 0.1 e^{-0.1 x} dx , x\geq 0

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P(10 < X

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P(10 < X

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Answer:

a)

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b)

# for a g line, R = 0.726 μm

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c)

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