Index
resistance (cont.)
    in a parallel circuit     490
    in series circuits     488
    of typical electrical devices     481
resistivity         485
resistor         481
    color code     483
resolution of forces         170
resonance
    and musical instruments     457
    and natural frequencies     429
    and the Bohr model of the atom     761
    definition of     401
    in mass and spring oscillator     402
    of sound waves     455
    standing waves     428
response variable         55
rest energy         793
restoring forces         389
resultant         169
retina         623
reverberation         455
reversibility         731
    and the arrow of time     732
RGB color model         21
rhythm         438
right triangle
    and component forces     171
right-hand rule
    for polarity of electromagnet     549
    force on moving charge in magnetic field     561
    magnetic field of a straight wire     548
ripples         410
robot
    driverless vehicle     166
rock boiling         698
rocket propulsion         224
rogue waves         408
roller coaster
    acceleration g-force     104
rolling         207
    downhill     378
    friction     156
ropes
    in structures     243
rotational equilibrium
    equation for     238
rotational inertia         365
rotational kinetic energy         376
rounding         49
ROYGBIV         21
Rubbia, Carlo         800
Rube Goldberg machine         554
Rutherford scattering experiment         754
    interactive simulation     755
Rutherford, Ernest         752
Rutherford, Ernest (cont.)

S
safety
    in laboratory investigations     52
    of automobiles     304
safety factor         242
sailing         130
Salam, Abdus         800
satellite
    definition of     215
    global positioning     68
scalar         71
    definition of     168
scale
    of a graph     55
scattering
    as quantum phenomenon     764
    of light     635
schematic design         242
Schrödinger equation         780
Schrödinger, Erwin         770
Schwarzchild, Karl         223
science
    definition of     11
scientific evidence         12
scientific method
    steps in     12
scientific notation         45
    on calculators     45
scientific theory         11
screw
    as simple machine     348
second
    definition of     39
    unit of time     46
second law
    determine force from motion     143
    determine motion from forces     142
    interactive simulation of Newton’s     144
    Newton’s laws     141
    of thermodynamics     731
see-saw         332
seismic waves         410
semiconductor         687
    in photovoltaic cell     27
series circuit         487
sewing machines         262
shadows         579
shielding, of electric fields         529
shock absorbers         395
shock waves         445
SI units         38
significant figures         49
    rounding     49
silicon
    in photovoltaic cells     28
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