Answer :
(a) The energy of blue light (in eV) is 2.77 eV
(b) The wavelength of blue light is
Explanation:
The relation between the energy and frequency is:
where,
h = Plank's constant =
Given :
Frequency =
Conversion used :
So,
Also,
The energy of blue light (in eV) is 2.77 eV
The relation between frequency and wavelength is shown below as:
Where,
c = the speed of light =
So, Wavelength is:
The wavelength of blue light is
Answer:
1380 kilogram/cubic meter
A) 29.9g
first find the weight of 1 staple.
then multiply with 225
Answer: Electric charges are of two general types: positive and negative.
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254.6N
F=ma
F=67×3.8
F=254.6N