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Explain how the photoelectric effect gives evidence for the photon theory of light.

When light is shone onto a piece of metal, if the light is below a certain frequency, no photoelectrons are emitted. Only if the light is above a certain frequency, known as the threshold frequency, are phot...
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Answered by Tamanna D. • Physics tutor
10735 Views

(e*sqrt(e))/cuberoot(e^2)=e^k find k

This an indices question. What you need to do is simplify the left hand side so that you have e to some power and that will give you k. You can start with the rule that square roots and cube roots are 1/the ...
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Answered by Tamanna D. • Maths tutor
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Outline the process of the light independent reaction in photosynthesis, also known as the Calvin cycle.

Light INDEPENDENT reaction:· RuBP combines with CO 2 , using Rubisco which is an enzyme that catalyses the reaction· This forms 2x GP molecules· Each GP is reduced to form TP, using reduced NADP which provid...
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Answered by Johana A. • Biology tutor
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Why does the noun "Der Junge" become "Den Jungen" in the accusative case whereas "Der Mann" just becomes "Den Mann"?

"Der Junge" is an example of something called a Weak Masculine Noun . This sounds more complicated than it actually is. Basically, in German, most nouns are Strong , which means they decline (chang...
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Answered by Adam H. • German tutor
8942 Views

When should I use "tu" and when should I use "vous"?

The basic difference between the two is that "tu" is used for one person (i.e. in the singular) whereas "vous" is used for more than one person (i.e. in the plural). However, there are so...
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Answered by Adam H. • French tutor
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