Physical Science for ProgressPrentice-Hall, 1970 - 626 σελίδες |
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Σελίδα 81
... directions . A force can act in one direction only . The description of any force includes two factors : how big it is ( magnitude ) and in what direction it acts . These two factors are easily shown in a scale drawing . Let us see how ...
... directions . A force can act in one direction only . The description of any force includes two factors : how big it is ( magnitude ) and in what direction it acts . These two factors are easily shown in a scale drawing . Let us see how ...
Σελίδα 89
... direction in which the force acts , work is put into the body . The scientist says that the work is positive . If the direction in which the force acts is opposite to the direction of the motion of the object , the work is negative . If ...
... direction in which the force acts , work is put into the body . The scientist says that the work is positive . If the direction in which the force acts is opposite to the direction of the motion of the object , the work is negative . If ...
Σελίδα 481
... direction . A record was kept of the direction it was swinging . It was found that the direction . of the swing moved in a clockwise direction . The west to east direction of the rotation of the earth is counterclockwise . The direction ...
... direction . A record was kept of the direction it was swinging . It was found that the direction . of the swing moved in a clockwise direction . The west to east direction of the rotation of the earth is counterclockwise . The direction ...
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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