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UNI Physics, Chemistry and Maths Quick Sheet

Thirty flashcards with the formulas and facts most used in the UNI admission exam. Original study material.

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Equation of motion without time

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Equation of motion without time

v^{2} = u^{2} + 2 a s

Newton's second law

F = ma

Kinetic energy

E_{k} = \frac{1}{2} m v^{2}

Gravitational potential energy

E_{p} = m g h

Ohm's law

V = I R

Coulomb's law

F = k \frac{q _{1} q _{2}}{r ^{2}}

Period of a simple pendulum

T = 2 π L / g

Lens formula

\frac{1}{v} - \frac{1}{u} = \frac{1}{f}

Ideal gas law

P V = n R T

Boyle's law

At constant temperature,

P V

is constant

Avogadro's number

6.02 \times 1 0^{23}

particles per mole

Moles from mass

moles = mass / molar mass

pH definition

pH = - lo g [H^{+}]

Molarity

moles of solute per litre of solution

Dilution law

M_{1} V_{1} = M_{2} V_{2}

General formula of alkanes

C_{n} H_{2 n + 2}

General formula of alkenes

C_{n} H_{2 n}

Oxidation occurs at the

Anode

Sum of the roots of

a x^{2} + b x + c = 0

- b / a

Product of the roots of

a x^{2} + b x + c = 0

c / a

Discriminant

Δ = b^{2} - 4 a c

Derivative of

x^{n}

n x^{n - 1}

Derivative of

e^{k x}

k e^{k x}

Chain rule

\frac{d y}{d x} = \frac{d y}{d u} \cdot \frac{d u}{d x}

Sum of an arithmetic progression

S_{n} = \frac{n}{2} [2 a + (n - 1) d]

Sum of a geometric progression

S_{n} = \frac{a ( r ^{n} - 1 )}{r - 1}

Pythagoras' theorem

a^{2} + b^{2} = c^{2}

Area of a circle

π r^{2}

Volume of a cylinder

π r^{2} h

Sine of 30 degrees

\frac{1}{2}

UNI Admission Exam (Peru) in Peru

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