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3 years ago

What is the energy (in joules) of an ultraviolet photon with wavelength 110 nm?

Physics

1 answer:

Anon25 [30]3 years ago

5 0

For light or ultraviolet, the formula for energy can be calculated using Planck’s equation. That is:

E = h c / ʎ

where,

h is the Planck’s constant = 6.626 * 10^-34 m^2 kg / s

c is the speed of light = 3 * 10^8 m/s

ʎ is the wavelength of light = 110 nm = 110 x 10^-9 m

So calculating for energy E:

E = (6.626 * 10^-34 m^2 kg / s) * (3 * 10^8 m/s) / (110 x 10^-9 m)

E = 1.807 x 10^-18 J

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Choose all of the true statements regarding the relationship between voltage, resistance, and current. Current is measured in am

AveGali [126]

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(When solving for Resistance in a circuit and both voltage and current are known values, the equation I =V*R is not true, and not the way to solve it.) If the resistance is what you're looking for, then the equation to use is R = V / I .

-- If the voltage in a circuit is increased, the current will also increase.

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3 years ago

Read 2 more answers

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kvasek [131]

Answer:

Explanation:

Normal force, is always directed upward the surface over which is placed the object, and can adopt any value, as required to meet Newton's 2nd Law.

In this case, as the external force on the suitcase pulls upward, in order to counteract the influence of gravity, normal force is less than the weight of the suitcase, as follows:

F + Fn = m*g

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So, the normal force is equal to the magnitude of the weight of the suitcase (m*g) minus the magnitude of the force of the pull (F) which is the same expressed by the statement b.

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3 years ago

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MatroZZZ [7]

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looks like a good answer ...

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3 years ago

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Sergeeva-Olga [200]

Answer:

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sesenic [268]

Answer:

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Explanation:

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