A typical american family uses 1000 kwh of electricity a month. what is the average rrns current in the 120 v power line to a ty
1 answer:
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Answer:
Energy of UV light
Energy of green light
Energy of infrared light
Explanation:
We have given the wavelength of UV light = 400 nm , wavelength of green light = 550 nm and wavelength of infrared = 900 nm
Speed of light
Plank's constant
Energy of the signal is given by
So energy of UV light
Energy of green light
Energy of infrared light
Answer:
Fe = 25.67 N
Fg = 2.0734 x 10^-35 N
Explanation:
r = 3 x 10^-15 m
G = 6.67 x 10^-11 Nm^2/kg^2
Mp = 1.6726231 x 10^-27 kg
Qp = 1.6021 x 10^-19 C
K = 9 x 10^9 Nm^2/C^2
The formula for the electrical force between the two protons is given by
Fe = 25.67 N
The formula for the gravitational force between the two protons is given by
Fg = 2.0734 x 10^-35 N
Answer:
Part a)
so the polarization axis of two polarizers must be at 90 degree
Part b)
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.
Explanation:
Part 1)
As per law of Malus we know that the intensity of light coming from the second polarizer and the intensity of the light from first polarizer is related as
now we know that we rotate the second polarizer till the intensity of the light becomes zero
so we will have
so we will have
so the polarization axis of two polarizers must be at 90 degree
Part b)
when two axis are inclined at 90 degree then scale reads 104.3 degree
so here the scale exceeds the reading by
so in order to make them inclined at 20 degree we will have
(vi) set the second polarizer so that its angular scale reads 34.3 degrees.