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A photon has an energy of 1.0 MeV. Calculate the frequency associated with this photon energy. State an appropriate unit in your answer.

The energy contained in a photon is given by the formula E = hf, where h is the Planck constant and f is the frequency of the photon. Since h = 4.1 10 −15 eV s, f = E/h = 1.0 10 3 eV / (4.1 10 −15 eV s) = 2....
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Answered by Giovanni N. • Physics tutor
17479 Views

How do you remember how to conjugate for each tense?

The best way for me to personally learn and remember is by creating/ noticing patterns. There will always be a pattern with conjugations, even for the irregular verbs. For example, present tense endings I sa...
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Answered by Nina P. • Spanish tutor
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Nella mia città, ci sono due grandi problemi: 1)vicino a casa mia ci sono solo contenitori per la carta e il vetro. Non è possibile riciclare la plastica; 2)c’è molta gente che non lavora. La maggior parte dei disoccupati è giovane. What are the problems?

Possibilities are A homelessness B crime C air pollution D youth violence E unemployment F recycling First of all, I would ask if they know the meanings of the words. Then I would ask them to identify and un...
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Answered by Giovanni N. • Italian tutor
3893 Views

The curve y = 4x^2 + a/ x + 5 has a stationary point. Find the value of the positive constant a given that y-ordinate of the stationary point is 32.

This question might look hard but can be easily answered by breaking it down into steps and remembering a few key things. The first step is to recognise that the question is mentioning a stationary point whi...
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Answered by Helen B. • Maths tutor
12241 Views

Rearrange y=(3x+5)/x to make x the subject

This question is asking us to make x the subject, so we’re aiming to end up with just x on its own on one side of the equation. Firstly, we need to get rid of the x on the bottom of the right-hand side, so t...
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Answered by Chloe K. • Maths tutor
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