An electron initially at rest is placed in an electric field 2x104 N/C directed west. The distance between the plates is 1 cm.
1 answer:
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Gravitational force between sun and planet is given by,
Thus, The force of gravitation is inversely proportional to the distance.
Kepler's law states that the square of period of planet is proportional to cube of semi major axis of its orbit.
The time period of planet is more when the gravitational force is less.
Thus, planet Y is closer to earth because sun exert greater gravitational force than planet Z.
Answer:
The dilatation is 3 because the <em>separation </em>between the dilatation center C and P grows by that factor of 3.
Explanation:
- Between C and P, the separation is |5-1| = 4 in x-axis and |2-4| = 2 in y-axis
- Between C and P', the separation is |13-1| = 12 in x-axis and |-2-4| = 6 in y-axis.
Comparing the separation on each direction, 12/4 = 3 and 6/2 = 3. Therefore, that's the dilatation value.
Alternatively, by computing the distances between the points
