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Units and constants 449
UFACTOR Unit factor conversion. Converts a measurement using a
compound unit into a measurement expressed in
constituent units. For example, a Coulomb—a measure of
electric charge—is a compound unit derived from the SI
base units of Ampere and second: 1 C = 1 A * 1 s. Thus:
UFACTOR(100_C,1_A)) returns 100_A*s
USIMPLIFY Unit simplification. For example, a Joule is defined as one
kg*m
2
/s
2
. Thus:
USIMPLIFY(5_kg*m^2/s^2) returns 5_J
Physical constants
The values of 34 math and physical constants can be
selected (by name or value) and used in calculations.
These constants are grouped into four categories: math,
chemistry, physics and quantum mechanics. A list of all
these constants is given in “List of constants” on page 451.
To display the constants, press
SF and then tap
.
Example Suppose you want to know the potential energy of a mass
of 5 units according to the equation E = mc
2
.
1. Enter the mass and
the multiplication
operator:
5
s
2. Open the constants
menu.
SF