To find average speed, we divide the distance of travel (in this case, 400 metres) by the time she took, 32 seconds. Therefore: 12.5 seconds is her average speed.
Describe that a scientific law is a description of a specific relationship under given conditions. Describe that scientific laws are developed from large amounts of experimental observations that result in the same outcome.
The answer would B, trust me it’s right
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Answer: E = 39.54 N/C
Explanation: Electric field can be determined using surface charge density:

where:
σ is surface charge density
is permitivitty of free space (
)
Calculating resulting electric field:


![E = \frac{[0.3-(-0.4)].10^{-9}}{2.8.85.10^{-12}}](https://tex.z-dn.net/?f=E%20%3D%20%5Cfrac%7B%5B0.3-%28-0.4%29%5D.10%5E%7B-9%7D%7D%7B2.8.85.10%5E%7B-12%7D%7D)

E = 39.54
The resulting Electric Field at any point is 39.54N/C.