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yulyashka [42]
3 years ago
10

Which of these statements is false? Question 18 options:

Physics
1 answer:
Katarina [22]3 years ago
6 0

True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected

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What is the energy range (in joules) of photons of wavelength 410 nm to 750 nm ? Express your answers using two significant figu
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Answer:

4.9 x 10^-19 J, 2.7 x 10^-19 J

Explanation:

first wavelength, λ1 = 410 nm = 410 x 10^-9 m

Second wavelength, λ2 = 750 nm = 750 x 10^-9 m

The relation between the energy and the wavelength is given by

E = h c / λ

Where, h is the Plank's constant and c be the velocity of light.

h = 6.63 x 10^-34 Js

c = 3 x 10^8 m/s

So, energy correspond to first wavelength

E1 = (6.63 x 10^-34 x 3 x 10^8) / (410 x 10^-9) = 4.85 x 10^-19 J

E1 = 4.9 x 10^-19 J

So, energy correspond to second wavelength

E2 = (6.63 x 10^-34 x 3 x 10^8) / (750 x 10^-9) = 2.652 x 10^-19 J

E2 = 2.7 x 10^-19 J

4 0
3 years ago
8. While taking a measurement, Ajay put the 2nd mark of the scale to the edge of the line and the mark that pointed to the end o
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Answer:

The length of line is 78 cm or 0.78 m.

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initial reading 2 mark

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The length of the line

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A researcher claiming that females were more empathetic than males would test that hypothesis by using __________ statistics.
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<span>A researcher claiming that females were more empathetic than males would test that hypothesis by using inferential statistics.</span>
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