In Electrostatics the electrical force between Two charged objects is inversely Related to the distance of separation between the two objects .
Answer:
b. 0.20 m/s.
Explanation:
Given;
initial mass, m = 0.2 kg
maximum speed, v = 0.3 m/s
The total energy of the spring at the given maximum speed is calculated as;
K.E = ¹/₂mv²
K.E = 0.5 x 0.2 x 0.3²
K.E = 0.009 J
If the mass is changed to 0.4 kg
¹/₂mv² = K.E
mv² = 2K.E
Therefore, the maximum speed is 0.20 m/s
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An electron cloud is a visual model of the most probable locations of electrons in a atom. The cloud is denser where you will probably find a electron.