Answer:
E = 124 eV
Explanation:
Given,
The frequency of the X-rays, ν = 3.0 x 10¹⁰ Hz
The formula for calculating the energy of the electromagnetic waves of a single photon of having frequency 'ν' is given by the relation
E = hν joules
Where,
h - Planck's constant (6.626 x 10⁻³⁴ Js)
Substituting the values in the above equation
E = 6.626 x 10⁻³⁴ Js x 3.0 x 10¹⁰ Hz
= 1.9878 x 10⁻²³ J
Converting it into eV
E = 1.9878 x 10⁻²³ x 6.242 x 10¹⁸ eV
= 124 eV
Therefore, the energy in electron volts of X-rays is, E = 124 eV
Answer:
Albert Einstein was from Germany he was born theoritical physicist, from childhood only he loved mechanical toys, he was highly gifted in Mathematics, He was a world citizen and a scientific genius too. His contribution were:
1) he developed the theory of relativity
2) he also discovered the process of nuclear fission
3)he developed the quantum theory of specific heat
4)theory of stimulated emission, on which laser device technology is based
5) law of photoelectric effect
hope it helped you :)
in this since your volume remains at a constant you'll need to use Gay-Lussacs law, p1/t1=p2/t2.
your temp should be converted in kelvin
variables:
p1=3.0×10^6 n/m^2
t1= 270k
just add 273 to your celcius
p2= ? your solving for this
t2= 315k
then you set up the equation
(3.0×10^6)/270= (x)(315)
you then cross multiply
(3.0×10^6)315=270x
distribute the 315 to the pressure.
9.45×10^8=270x then you divide 270 o both sides to get
answer
3.5×10^6 n/m^2
The answer is 3. Photosynthesis removes carbon dioxide while respiration puts back carbon dioxide
