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2021-01-07 What is a set?? A well-defined collection of objects. What are the two terms for objects in a set?? Members Elements What’s the difference between a set and a list?? Sets are unordered. What’s the symbol for an empty set?? $$ \varnothing $$ What does $$x \in S$$ mean?? $x$ is a member of the set $S$. What does $$x \notin S$$ mean?? $x$ is not a member of the set $S$.

What is the transformation as a vector for $y = f(x) + a$?? $$ \left(\begin{matrix} 0 \\ a \end{matrix}\right) $$ What does the transformation $y = f(x) + a$ mean in simple terms?? Move the graph up by $a$. What is the transformation as a vector for $y = f(x + a)$?? $$ \left(\begin{matrix} -a \\ 0 \end{matrix}\right) $$ What does the transformation $y = f(x + a)$ mean in simple terms?? Move the graph back horizontally by $a$.

What is the symbol for a wire in a circuit?? What is the symbol for a resistor in a circuit?? What is the symbol for a light bulb in a circuit?? What is the symbol for a cell in a circuit?? What is the symbol for a battery in a circuit?? What is the symbol for a switch in a circuit?? Which is the positive terminal?? The one on the left. What is the technique for remembering the positive and negative terminals on a cell?

See also: [[Physics - Circuits]]S [[Physics - Voltage and Potential Difference]]S What is electric current?? The rate of flow of charged paticles. What symbol is used to represent current?? $$ I $$ What are some examples of charged particles?? Electrons, $e^{-}$ Positrons, $e^{+}$ Protons, $p$ Ions, $Na^{+}$, $Cu^{++}$ Why is $I$ used to represent current?? Because it comes from the french “Intensity of Current”. What are the units for current?

What does this symbol represent in FSM?? A state. What does this symbol represent in FSM?? The start state. What does this symbol represnt in FSM?? The end or accept state. What does this symbol represent in FSM?? A transition. What does the language recognised by a FSM consist of?? All string accepted by the finite state machine. What is a finite state machine?? An abstract model of computation that is used to model logic.

This links heavily to [[Physics - Force and Newtons]]S . What is a force diagram?? A diagram showing all the forces acting on an object. What should you draw whenever you have a problem involving forces in Mechanics?? A force diagram. What does the force diagram look fora block of weight $W$ being pulled by a force P on a rough horizontal plane?? How would this diagram change if it was a smooth plane?? In $\hat{i}$ and $\hat{j}$ notation, what is the value of a resultant force for an object in equilbrium?

Flashcards 2020-12-10 What do you call data with two variables?? Bivariate data. What is bivariate data?? Data with two variables. What is correlation?? A measure of the strength and type of a relationship between two variables. What type of correlation is this?? Strong positive correlation. What type of correlation is this?? Weak positive correlation. What type of correlation is this?? Strong negative correlation. What type of correlation is this?? Weak negative correlation. What type of correlation is this?

See also: [[Physics - Hooke's Law]]S [[Physics - Energy]]S [[Physics - Work Done]]S What is the area under a force-extension graph?? Work done. The energy put into a spring by stretching it is called?? Elastic potential energy. Stretching a spring over a distance is doing what in relation to work done?? Applying a force over a distance. What does the area of the triangle represent?? Work done.

Energy What is power?? Power is the rate at which work is done. What is the symbol formula for power?? $$ P = \frac{W}{t} $$ If velocity is the rate of change of displacement, work done is?? The rate of change of energy. What is the unit of power?? $$ \text{watt}, W $$ What is the equation for power in terms of velocity?? $$ P = Fv $$ How is efficiency calculated?? $$ \frac{\text{useful output energy}}{\text{total input energy}} \times 100% $$

What is energy?? The capacityof one object or system to do work or cause a change on another. What is the principle of the conservation of energy?? The energy of a closed system always remains constant; energy can never be created or destroyed, only transferred. What form of energy is due to the motion of a mass?? Kinetic energy. What form of energy is due to the position of a mass in a gravitational field?? Gravitational potential energy.

See also: [[Physics - Energy]]S What is work done equivalent to?? Energy transferred. What are the SI base units equivalent to for the Joule?? $$ kgm^2s^{-2} $$ How is work done calculated?? $$ \text{force},\times,\text{distance moved in direction of force} $$ In the equation $W = F \times d$ for work done, what is $d$?? The distance moved in the direction of the force. What is the area under a force-distance graph?? Work done. Backlinks [[Physics - Elastic Potential Energy]]S [[Physics - Syllabus]]S Metadata date: 2020-11-23 14:28 tags: - '@?

What is the $a^2$ form of the cosine rule?? $$ a^2 = b^2 + c^2 - 2bc\cos(A) $$ What is the $\cos(A)$ form of the cosine rule?? $$ \cos(A) = \frac{b^2 + c^2 - a^2}{2bc} $$ When can you use the cosine rule for working out the length of a side?? When you have SAS. When can you use to cosine rule for working out an angle?? When you have only lengths. What is the initial setup for the cosine rule?