1. A simple diagram of the electric field around an alpha particle is shown below. State the feature of the diagram that shows that the electric field gets weaker as the distance from the alpha particle increases.

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1. A simple diagram of the electric field around an alpha particle is shown below.
State the feature of the diagram that shows that the electric field gets weaker as the distance
from the alpha particle increases.
2. Charges qA and qB are in a vacuum and have a distance of 15 cm between their centres.
Charge qc is placed on the line joining qA and qB, at a point where it experiences zero net
force. This point is 5.0 cm from charge qA, as shown in the diagram below:
9A
5.0 cm
●
9c
15 cm
[This diagram is not drawn to scale.]
Using proportionality, calculate the ratio of charge q to charge qA-
9B
Transcribed Image Text:1. A simple diagram of the electric field around an alpha particle is shown below. State the feature of the diagram that shows that the electric field gets weaker as the distance from the alpha particle increases. 2. Charges qA and qB are in a vacuum and have a distance of 15 cm between their centres. Charge qc is placed on the line joining qA and qB, at a point where it experiences zero net force. This point is 5.0 cm from charge qA, as shown in the diagram below: 9A 5.0 cm ● 9c 15 cm [This diagram is not drawn to scale.] Using proportionality, calculate the ratio of charge q to charge qA- 9B
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