@?school

See Also [[Physics - Waves]]S [[Physics - Diffraction]]S [[Physics - Polarisation]]S [[Physics - Reflection and Refraction]]S Flashcards What is the intensity of a wave?? The radiant power passing through a surface per unit area. What is the SIMPLE formula for intensity?? $$ I = \frac{P}{A} $$ What is the formula for intensity?? $$ I = \frac{P}{4\pi r^2} $$ Why does the intensity of a wave decrease as you move further away?

See Also [[Physics - Reflection and Refraction]]S [[Physics - Waves]]S [[Physics - Diffraction]]S [[Physics - Intensity]]S Flashcards What is polarisation?? Where particles in a wave are oscillating in one direction only. What does it mean for a wave to be plane polarised?? Where the particles in the wave are oscillating along a single plane. What does it mean for a wave to be partially polarised?? Where most of the particles in a wave are oscillating along a single plane.

See Also Flashcards $$\sinh x$$ What is the definition?? $$ \frac{e^x - e^{-x}}{2} $$ $$\cosh x$$ What is the definition?? $$ \frac{e^x + e^{-x}}{2} $$ $$\tanh x$$ What is the definition?? $$ \frac{e^{2x} - 1}{e^{2x} + 1} $$ What function is this?? $$ \sinh $$ What function is this?? $$ \cosh $$ What function is this?? $$ \tanh $$ $$y = \sinh x$$ What does the graph look like?? $$y = \cosh x$$ What does the graph look like?

See Also [[Computing - Functional Programming]]S Flashcard What is big data?? Data that is collected on such a large scale that it cannot easily be analysed. What are the three Vs of Big Data?? Volume Velocity Variety What does Volume mean in Big Data?? Data is huge, too big to be handeled on one server. What does Velocity mean in Big Data?? Data is created very quickly. What does Variety mean in Big Data?

See Also [[Computing - Big Data]]S Flashcards What is the domain of a function?? The set from which you can choose inputs. What is the co-domain of a function?? The set from which outputs come from. How can you conceptualise a function as a mapping?? A function maps the domain to the co-domain. If the variables in a program are immutable, what can you say about the program?? It is stateless.

See Also [[Physics - Reflection and Refraction]]S Flashcards 2021-03-11 What is diffraction?? The spreading out waves as it passes through an opening or apeture. Why doesn’t shining a torch through a door frame cause diffraction?? Because the width of the door frame is very different from the wavelength. When does diffraction occur?? When the width of the opening is roughly the same as the wavelength. Why do radio waves travel further than micro waves?

Flashcards $$|z^4| = 16$$ What is $|z|$?? $$ 2 $$ $$\arg z^4 = \frac{\pi}{2}$$ What is $\arg z$?? $$ \frac{\pi}{8} + \frac{2\pi n}{4} $$ $$\arg z^3 = 0$$ What is $\arg z$?? $$ \frac{2\pi n}{3} $$ $$z = \sqrt[3]{4 + 4i\sqrt{3}}$$ How could you rewrite this?? $$ z = 4 + 4i\sqrt{3} $$ If the modulus of $z^3$ is $8$, what must the modulus of $z$ be?? $$ 2 $$ If the argument of $z^3$ is $\frac{\pi}{3}$, what must the argument of $z$ be?

Flashcards What is $\left(z + \frac{1}{z}\right)$?? $$ 2\cos\theta $$ What is $\left(z - \frac{1}{z}\right)$?? $$ 2i\sin\theta $$ What is $\left(z - \frac{1}{z}\right)^4$?? $$ 16\sin^4\theta $$ What is $\left(z + \frac{1}{z}\right)^n$?? $$ 2^n\cos^n\theta $$ What is $\left(z^5 + \frac{1}{z^5}\right)$?? $$ 2\cos 5\theta $$ What is $\left(z^n - \frac{1}{z^n}\right)$?? $$ 2i\sin n\theta $$ If you’re trying to find out an identity for $\sin^4\theta$, what should you do?? $$ \left(z - \frac{1}{z}\right)^4 $$ If you’re trying to find out an identity for $\sin 4\theta$, what should you do?

What is the main limitation of HTTP communication?? The client has to request the data for it to be sent. What is the advantage of WebSockets?? It is full-duplex. Why are smaller packets in the WebSocket protocol beneficial?? Because the connection can be faster. Backlinks [[Computing - Syllabus]]S [[How to get around]]M Metadata date: 2021-03-02 10:04 tags: - '@?computing' - '@?school' - '@?public' - '@?networking' title: Computing - Client/Server Model

$$(a + b)^12$$ What would you use to expand this?? The binomial theorem. What is the $r$-th term in the binomial expansion of $(a + b)^n$?? $$ \left(\begin{matrix} n \\ r \end{matrix}\right) a^n b^{n - r} $$ $$1 \quad 5 \quad 10 \quad 10 \quad 5 \quad 1$$ What is the next row of Pascal’s triangle?? $$ 1 \quad 6 \quad 15 \quad 20 \quad 15 \quad 6 \quad 1 $$ What does the $n$-th row of Pascal’s triangle start with (ignoring the top)?

What is missing?? What is missing?? What is missing?? What is missing?? What is missing?? What is the Law of Reflection?? On a smooth plane, the angle of incidence is equal to the angle of reflection. What is missing?? What is missing?? What is missing?? What is missing?? What is missing?? Why does refraction occur?? Because the wave changes speed when it passes from medium to another. What is partial reflection?? A slight reflection off a surface that a wave is refracted through.

What are the axis on an oscilliscope?? Voltage-time What does the horizontal space between two points represent on an oscilliscope?? The period. Backlinks [[Physics - Syllabus]]S Metadata date: 2021-02-25 10:25 tags: - '@?school' - '@?physics' - '@?waves' - '@?year-1' - '@?school' - '@?public' title: Physics - Oscilliscopes