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Andre45 [30]
3 years ago
9

atoms are the principle constituent of ______ A. all matter b. only solids liquids and gases c. all subatomic particles d. only

plasma
Physics
1 answer:
Soloha48 [4]3 years ago
6 0
I think it is a. all matter

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A) Show that the surface temperature of a star can be inferred from measurements of blackbodyfluxes at two different frequencies
Roman55 [17]

Answer:

The answers to the questions have been solved in the attachment.

Explanation:

The answers to part a to e are all contained in the attachment. For answer part b, temperature and frequency were assumed to be fixed or constant. V² is directly proportional to T telling us that variation in T gives us a square in the frequency variation. This tells us why it is difficult when both frequencies are on this side of the black body.

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3 years ago
Calculate the approximate volume of a uranium nucleus, 23592u. (you can ignore the mass defect in this calculation and simply ta
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Radius of nuclei is given by formula

R = R_oA^{1/3}

now we can say volume of the nuclei is given as

V = \frac{4}{3}\pi R_o^3* A

now the density is given as

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m = z*m_p + (A- z)*m_n

m_p = m_n = 1.008u

m = A*1.008u

Now density is given as

\rho = \frac{A*1.008u}{\frac{4}{3}\pi R_0^3* A}

here we know that

R_0 = 1.2 fm

\rho = \frac{1.008u}{\frac{4}{3}\pi*(1.2*10^{-15})^3}

\rho = 2.31 * 10^{17} kg/m^3

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5 0
3 years ago
Which statement describes how this diagram could be changed so that it
Dominik [7]

Answer:

b. add a magnetic metal core

Explanation:

a p e x test

8 0
3 years ago
Read 2 more answers
An object has a mass of 25 kg. What is the force of gravity acting on the object?
aleksandrvk [35]

Answer:

25

Explanation:

Because u don't know the gravity so u take that force and just put it in the gravity spot

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1st and 2nd

Explanation:

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