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Dafna11 [192]
3 years ago
10

At approximately what wavelength of the continuous spectrum will the greatest (maximum) intensity occur when 60-kV electrons str

ike an copper (Cu) target?
Physics
1 answer:
inna [77]3 years ago
6 0

Answer: 20 pm=20*10^-12 m

Explanation: To solve this problem we have to use the relationship given by:

λmin=h*c/e*ΔV= 1240/60000 eV=20 pm

this expression is related with the bremsstrahlung radiation when a flux of energetic electrons are strongly stopped hitting to a catode. The electrons give their kinetic energy to the atoms of the catode.

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PLEASE HELP FAST Five-gram samples of brick and glass are at room temperature. Both samples receive equal amounts of energy due
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Answer:

1.The temperature of each sample will increase by the same amount

Explanation:

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This is shown by the calculation below

Q = mcΔT

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Biologists think that some spiders "tune" strands of their web to give enhanced response at frequencies corresponding to those a
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Answer:

Explanation:

Given

diameter d=20 \mu m

density \rho =1300 kg/m^3

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\nu =\sqrt{\frac{T}{\mu }}

The expression for Fundamental Frequency

f=\frac{\nu }{2l}

f=\frac{1}{2l}\times \sqrt{\frac{T}{\mu }}

f=\frac{1}{2l}\times \sqrt{\frac{T}{\frac{m}{l}}}

f=\frac{1}{2l}\times \sqrt{\frac{Tl}{\rho V}}

Squaring

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T=4\rho \cdot A\cdot l^2\cdot f^2

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