By moving her arms outward, an ice skater speeds up a spin, while moving her arms inward slows down a spin. Question options: Tr
1 answer:
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Answer:
2.7067 eV
Explanation:
h = Planck's constant =
c = Speed of light =
= Threshold wavelength = 459 nm
Work function is given by
Converting to eV
The work function W0 of this metal is 2.7067 eV
Answer:
c. 2 m/s
Explanation:
The relationship between speed, frequency and wavelength of a wave is given by:
where
v is the speed of the wave
f is its frequency
is the wavelength
For the transverse wave in this problem, we have:
is the frequency
is the wavelength
Substituting these numbers into the equation, we find the speed of the wave: