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blagie [28]
3 years ago
13

Describe the rool each element plays in the life of a plant. a)soil b)water c)light

Chemistry
2 answers:
bagirrra123 [75]3 years ago
6 0
A)soil-to help get the plant its nutrition
b)water-for photosynthesis
c)light-to make their own food
HACTEHA [7]3 years ago
3 0

Answer:

no

Explanation:

no

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calculate the speed of an electron if its de broglie wavelength is twice its displacement in one second
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Answer:

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Explanation:

De-Broglie wavelength is given by:

\lambda=\frac{h}{mv}

where,  \lambda = wavelength of a particle

h = Planck's constant = 6.626\times 10^{-34}Js

m = mass of particle

v = velocity of the particle

Velocity of an electron = v

Mass of an electron = 9.1\times 10^{-31}kg

Wavelength of electron is twice the displacement in seconds which is velocity of an electron.

Then.wavelength of an electron = \lambda =2v

\lambda =2v=\frac{6.626\times 10^{-34}Js}{9.1\times 10^{-31}kg\times v}

v = 0.01908 m/s

The speed of an electron is 0.01908 m/s.

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Explanation:

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