I think is e 400 , im not sure
Answer:
(a). The first wavelength is 401.0 nm.
(b). The metal's work function is 2.55 eV.
Explanation:
Given that,
Maximum kinetic energy = 0.65 eV
Second wavelength
(a). We need to calculate the wavelength
Using equation of work function for first wavelength
.....(I)
For second wavelength,
Put the value of second wavelength
....(II)
By subtraction equation (I) from (II)
(b). We need to calculate the work function
Using formula of work function
Put the value into the formula
Hence, (a). The first wavelength is 401.0 nm.
(b). The metal's work function is 2.55 eV.
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Answer:
The intensity is
Explanation:
From the question we are told
The frequency of the electromagnetic wave is
The peak value of the electric field is
Generally the intensity of this wave is mathematically represented as
Where c is the speed of light with value
is the permittivity of free space with value
Substituting values into equation for intensity
Converting to we divide by 10,000
Answer:
An X-ray is used to take pictures of your bones. The waves that are used are known as radiation waves.