Answer:
Slowing down: A car decelerating because it's coming up to a red light.
Speeding up: A car accelerating because a red light has turned to a green light.
Moving at a constant speed, but changing direction: A car turning at a curve.
Moving at a constant velocity, with zero acceleration: A car on an empty highway.
Explanation:
Drive a car around or look at cars on the highway, you'll see the examples listed above happening all the time.
According to Gauss' law, the electric field outside a spherical surface uniformly charged is equal to the electric field if the whole charge were concentrated at the center of the sphere.
Therefore, when you are outside two spheres, the electric field will be the overlapping of the two electric fields:
E(r > r₂ > r₁) = k · q₁/r² + k · q₂/r² = k · (q₁ + q₂) / r²
where:
k = 9×10⁹ N·m²/C²
We have to transform our data into the correct units of measurement:
q₁ = 8.0 pC = 8.0×10⁻¹² C
q₂ = 3.0 pC = 3.0×10<span>⁻¹² C
</span><span>r = 5.0 cm = 0.05 m
Now, we can apply the formula:
</span><span>E(r) = k · (q₁ + q₂) / r²
= </span>9×10⁹ · (8.0×10⁻¹² + 3.0×10⁻¹²) / (0.05)²
= 39.6 N/C
Hence, <span>the magnitude of the electric field 5.0 cm from the center of the two surfaces is E = 39.6 N/C</span>
Its average would be 35km in 30 minutes Hope this helps :D
Positive
In an LED, the longer lead is always connected to the positive terminal
Answer:
If you have a graph of an object's velocity vs. time, then the acceleration can be found by calculating the slope of the graph.