All Questions
Tagged with radiation homework-and-exercises
52
questions
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Heat transfer and Stefan-Boltzmann law and black body radiation [closed]
can there exist a black body (theoretically) which has a cavity in it I don't mean Fery's black body I am referring to a black body which is made of a MATERIAL which has the property to emit and ...
- 11
1
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1
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140
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Radioactive decay problem [closed]
Hey could someone please explain why the answer is C. I thought if the answer is C, the atomic number would be 44, not 50. I'm not sure I'm approaching this correctly. Thanks for any advice.
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1
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32
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How radiative heating of a gas should scale with gas density [closed]
Let's say I have a gas in a fixed volume being heated by a uniform, monochromatic light source.
I'd like to know how the radiative heating rate per unit mass of the gas in J/kg/s scales with the ...
- 129
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2
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50
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Density problem [closed]
Spacecraft are commonly clad with aluminum to provide shielding from radiation. Adequate shielding requires that the cladding provide 20. g of aluminum per square centimeter. How thick must the ...
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69
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Acceleration due to incident radiation on plate
I have tried the following question and getting a wrong answer.
Monochromatic light of intensity I falls over a blackened plate of area A, at an angle $\theta$ as shown in the figure. If 70% of light ...
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-1
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1
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129
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Differential equation for radiation absorption [closed]
Let the radiation absorbed by a material be given as a function $N(x)$, where $x$ is the material's layer thickness. In a piece with a thickness of $dx$, $dN$ particles are absorbed. This number is ...
- 13
1
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1
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314
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Inverse Square Law of Radiation
I am conducting an experiment in which I investigate the relationship between the counts per second detected by a Geiger Counter and the distance between said Geiger Counter and the source of ...
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60
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Average time between the decay of 2 atoms
I want to calculate the average time ($\bar{t}$) between the decay of two atoms. These atoms are part of a larger number ($N_0$) atoms whose Half-life is $T$.
My idea: you can calculate $\bar{t}$ by ...
- 381
2
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2
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380
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Contradiction about decay constant
According to my textbook:
$\text{decay constant } k = \frac{A}{N}$
,where $A$ is activity, $N$ is no. of undecayed nuclei
$ = \frac{\text{no. of nuclei decayed per unit time}}{\text{total no. of ...
- 23
-1
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1
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47
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Radiation in nuclear power system [closed]
What are the 3 high level groups of sources of alpha, beta and gamma radiation in nuclear power systems?
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When do travelling (accelerating) charged particles emit radiation in their direction of travel and when perpendicular to their velocity? [closed]
I have read numerous things saying that a travelling charged particle emits radiation primarily in a cone in the direction of travel, and other places say the radiation is emitted and polarized in an ...
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126
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Calculating how long would an atom live if Rutherford's model were correct
How to calculate the time it would take for a hydrogen atom to collapse if Rutherford's model were correct? I tried using the relation between power (Larmor formula) and energy but I can't seem to get ...
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2
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1
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46
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In a Parallel Radioactive decay , what is the ratio of sum of stable nuclei of the two products? [closed]
Here is the full Question
The question gives you two Rate constants and asks for what time will the ratio of "sum of stable nuclei of Ca:Ar" be equal to 99.But what is this ?If i think of ...
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1
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2
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1k
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How does the temperature of matter increase when it absorbs light?
When matter absorbs light waves does it cause the matter to increase in temperature? For example, microwaves can heat matter up, so can light waves do the same?
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Beta+ Decay the Mass Missing [closed]
I am confused with such a question:
What is energy released in beta+ decay ${^{36}_{20}Ca} \rightarrow {^{36}_{19}K} + {^{0}_{1}e}$
I have a question when I was getting the mass difference. Since ...
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