Home/Class 12/Physics/

Question and Answer

Given the mass of iron nucleus as \(55.85u\) and \(A=56\), find the nuclear density?

Answer

The mass of the iron nucleus is \(m_{\mathit{Fe}}=55.85u\)
The value of \(u\)  is \(9.27\times 10^{-26}\mathit{kg}\) .
Find the nuclear density as follows:
\(\mathrm{Nuclear}\ \mathrm{density}=\left(\frac{\mathrm{mass}}{\mathrm{volume}}\right)\)
\(\mathrm{Nuclear}\ \mathrm{density}=\left[\frac{9.27\times 10^{-26}}{\frac 4 3\pi \times \left(1.2\times 10^{-15}\right)^3}\right]\times \frac 1{56}\)
\(\mathrm{Nuclear}\ \mathrm{density}=2.29\times 10^{17}\ \mathit{kg}m^{-3}\)
The density of matter in neutron stars is similar to this density. This shows that matter in these objects has been compressed to such an amount that they bear a resemblance to a big nucleus.
To Keep Reading This Answer, Download the App
4.6
star pngstar pngstar pngstar pngstar png
Review from Google Play
To Keep Reading This Answer, Download the App
4.6
star pngstar pngstar pngstar pngstar png
Review from Google Play
Correct47
Incorrect0
Watch More Related Solutions
When a primary amine reacts with chloroform in ethanolic \(KOH\), then the product is
(a) isocyanide
(b) aldehyde
(c) cyanide
(d) alcohol
In the following questions a statement of assertion followed by a statement of reason is given.
Assertion: Aniline is a weaker base than ammonia. 
Reason : Aniline is resonance stabilized.
Choose the correct answer out of the following choices.
(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
Evaluate \(\int\limits _{0}^{\frac{\pi}{2}}\frac {\cos x}{1+\cos x+\sin x}dx\)
Calculate the energy equivalent of \(1\) g of substance.
Match the thermodynamic processes given under Column I with the expressions given under Column II

For the given reaction, \(A+B\to Products\)
Following data are given:
Write the rate equation and calculate the rate constant.
What happens when aniline reacts with bromine water at room temperature?
.
Find the energy equivalent of one atomic mass unit, first in Joules and then in \(\mathit{MeV}\) . Using this, express the mass defect of \({_8^{16}}{{}}{{}}{O}{}\)  in \(\mathit{MeV}/c^2\) .
An aqueous solution of \(X\) is added slowly to an aqueous solution of \(Y\) as shown in Column \(I\). The variation in conductivity of these reactions is given in Column \(II\). Match Column \(I\) with Column \(II\) and select the correct answer using the codes given below the Columns.
( )
A. \(P - 3;  Q- 4;  R- 2 ;  S- 1\)
B. \(P - 4;  Q- 3;  R- 2 ;  S- 1\)
C. \(P - 2;  Q- 3;  R- 4 ;  S- 1\)
D. \(P - 1;  Q- 4;  R- 3 ;  S- 2\)
\(^{64}Cu\) (half-life \(=12.8h)\) decays by \(β\) emission \((38\% ),\beta ^{+}\) emission \((19\% )\) and electron capture \((43\% )\). Write the decay products and calculate partial half-lives for each of the decay processes.

Load More