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## HP 9G Calculator - Physics Constants Included in the Calculator

This document explains how to use the physics constants that are built into the 9G calculator.
Inserting a constant into a calculation
To insert a constant (listed in the table below), follow these steps:
1. Position the cursor to where the constant is to be inserted.
2. Press 2nd, then CONST to display the physics constants menu.
3. Scroll through the menu until the chosen constant is underlined.
4. Press ENTER.
Physics constants
The table below lists the physics constants that are included in the calculator.
 Symbol Meaning Value c Speed of light 299792458 m / s g Acceleration of gravity 9.80665 m.s-2 G Gravitational constant 6.6725985 × 10-11 N.m2 kg-2 Vm Molar volume of ideal gas 0.0224141 m3 mol-1 NA Avogadro's number 6.022136736 × 1023 mol-1 e Elementary charge 1.602177335 × 10-19 C me Electron mass 9.109389754 × 10-31 kg mp Proton mass 1.67262311 × 10-27 kg h Planck's constant 6.62607554 10-34 J.S k Boltzmann's constant 1.38065812 × 10-23 J.K-1 IR Gas constant 8.3145107 J / mol • k IF Faraday constant 96485.30929 C / mol mn Neutron constant 1.67492861 × 10-27 kg Atomic mass constant 1.66054021 × 10 -27 kg Dielectric permittivity 8.854187818 × 10-12 F / m Magnetic permittivity 0.000001257 H / m Flux quantum 2.067834616 × 10-15 Vs Bohr radius 5.291772492 × 10 -11m Bohr magneton 9.274015431 × 10-24 A ( m-2 Neutron magnetic moment 5.050786617 × 10-27 J / T

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