Formulas

with variable names that CSET wants you to use

Science Subtest III: Physics

FORMULAS

Description Formula

Quadratic formula &endash;b ±( b² &endash; 4ac)^1/2/2a

Constant acceleration

v = v_i + at

x = x_i + v_it + 1/2at²

v²_f&endash; v²_i = 2a(x_f &endash; x_i)

Circular motion

a = v²/r

q = q _i + w_it + a t²

w = w _i + a t

v = rw

a = ra

t = Ia

Spring F = &endash;kx

PE = 1/2kx²

T = 2� (m/k)^1/2

f = 1/(2�) (k/m)^1/2

w ² = k/m

Pendulum T = 2� Lg

w ² = g/L

Speed of waves in a string v = (T/µ)^1/2

Standing wave condition for a string fixed at

both ends

2L = nl, n is an integer

Standing wave condition for a string fixed at

one end

4L = nl, n is odd

Doppler effect

f' = f₀(V ± V₀)/(V ± V_s)

Optics n₁ sin q ₁ = n₂ sin q ₂

n = c/v

1/f= 1/p + 1/q

Thermodynamics

�U = nCv �T

�Q = mc �T

PV = nRT

1/2mv ² = 3/2kT

Magnetism F = qv °x B

F = ILx B

Electricity F =kq₁q₂/r²

V = IR

P = IV

E=F/q

V = w /q

Q = CV

1f

12

E =

V =

Q = CV

PHYSICS TEST

Not all formulas necessary are listed, nor are all formulas listed used on this test.

In questions on electricity and magnetism, the term current refers to "conventional current" and the use of the

right-hand rule is assumed.

While attention has been paid to significant figures, no answer should be considered incorrect solely because of

the number of significant figures.