Answer:
3 photons
Explanation:
The energy of a photon E can be calculated using this formula:
Where 
corresponds to Plank constant (6.626070x10^-34Js), 
is the speed of light in the vacuum (299792458m/s) and 
is the wavelength of the photon(in this case 800nm).
Tranform the units
The band Gap is 4eV, divide the band gap between the energy of the photon:
Rounding to the next integrer: 3.
Three photons are the minimum to equal or exceed the band gap.
Answer:
Explanation:
Given
mass of skier=60 kg
distance traveled by skier=75 m
inclination
speed (v)=2.4 m/s
as the skier is moving up with a constant velocity therefore net force is zero
Force applied by cable
work done
(b)Power
It depends on how you want to solve it you can solve it in many different meathods:$
The answer is c you got to look for answers that make sense
Answer:
What would most likely happen as a result of the generator in a wind turbine breaking?
The What would most likely happen as a result of the generator in a wind turbine breaking?
The blades would not be turned.
Less steam would be produced.
Electricity would not be generated.
Solar energy would not be absorbed.
The blades would not be turned.
Less steam would be produced.
Electricity would not be generated.
Solar energy would not be absorbed.
Explanation:
F
