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katen-ka-za [31]
3 years ago
9

Which scientist invented a model of the atom that most closely resembles the modern electron cloud model

Physics
1 answer:
Alex Ar [27]3 years ago
4 0
Bohr, he invented the Bohr model which is the basis for the beginning of quantum physics.
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The correct option is B.
As we are told in the question, the cabbage and broccoli grow best in clay soil. From the options we are given, it can be seen that it is only option B that has the highest amount of clay soil. The soil that will be used should be one that has the highest content of clay.
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When talking about variables in a scientific experiment, describe how you know what the independent variable, dependent variable
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An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

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A person is in a room whose walls are maintained at a temperature of 17 °C. The temperature of the person’s skin is 32 °C. The s
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Consider light of wavelengths 400 nm (UV), 550 nm (green, visible), and 900 nm (infrared). What is the energy associated with a
allsm [11]

Answer:

Energy of UV light =4.95\times 10^{-19}j

Energy of green light =3.6\times 10^{-19}j

Energy of infrared light =2.2\times 10^{-19}j

Explanation:

We have given the wavelength of UV light = 400 nm =400\times 10^{-9}m , wavelength of green light = 550 nm and wavelength of infrared = 900 nm

Speed of light c=3\times 10^8m/sec

Plank's constant h=6.6\times 10^{-34}

Energy of the signal is given by E=h\nu =h\frac{c}{\lambda }

So energy of UV light E=\frac{6.6\times 10^{-34}\times3\times 10^8}{400\times 10^{-9}}=4.95\times 10^{-19}j

Energy of green light E=\frac{6.6\times 10^{-34}\times3\times 10^8}{550\times 10^{-9}}=3.6\times 10^{-19}j

Energy of infrared light E=\frac{6.6\times 10^{-34}\times3\times 10^8}{900\times 10^{-9}}=2.2\times 10^{-19}j

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