Physical Science for ProgressPrentice-Hall, 1970 - 626 σελίδες |
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Σελίδα 199
... flow of charge . The flow of elec- trical charges is compared to the flow of water . The cell pushes electrons as a pump moves water . Two pumps can also move more water than one pump . Two cells can also move more electrons than one ...
... flow of charge . The flow of elec- trical charges is compared to the flow of water . The cell pushes electrons as a pump moves water . Two pumps can also move more water than one pump . Two cells can also move more electrons than one ...
Σελίδα 215
... flow of electrical charges only when the magnet moves , that is , while the coil of wire is cutting the magnetic lines of force . The direction of flow is reversed if the di- rection of movement is reversed . The cur- rent is also ...
... flow of electrical charges only when the magnet moves , that is , while the coil of wire is cutting the magnetic lines of force . The direction of flow is reversed if the di- rection of movement is reversed . The cur- rent is also ...
Σελίδα 287
... flow . B. When sound strikes the diaphragm , carbon granules are pushed closer together . There are now many more paths for the current . The sound causes a spurt of electricity to flow . C. The transmitter sends out spurts of ...
... flow . B. When sound strikes the diaphragm , carbon granules are pushed closer together . There are now many more paths for the current . The sound causes a spurt of electricity to flow . C. The transmitter sends out spurts of ...
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UNIT | 1 |
UNIT | 49 |
distributors of the John Frankenheimer film Grand Prix A General Electric Company 337 bottom rightGeneral Electric | 92 |
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acid acting ACTIVITY added amount atoms beam become body called carbon causes cell charges chemical chemical change circuit color combining compounds connected contains copper determined direction distance earth effort electrical electrical charges electrons elements energy engine equal experiment explain facts feet FIGURE flow force fuel gain gives glass grams happens heat hour hydrogen inch increases ions iron kinds lamp laser layer length light liquid magnet mass materials matter means measure metal miles mirror molecules moon motion move nature needed object oxygen particles piece plane plate pole position pounds pressure produced push rays reflected resistance Result rock scientists shell side sodium solution sound space speed spring stars Study surface temperature Terms theory travels tube turns units waves weight wire