Construct a position-time graph that shows the forward progress of Sunny The Dog in a straight line for 20 meters over the cours
e of 4 seconds.
1 answer:
Answer:
The answer to your question is the second graph (the one attached).
Explanation:
We have to look for the graph that represents the data given.
a) The first graph is not correct because we look for a distance of 20 m, and this graph only goes from 0 to 10 m.
b) this graph is correct because it covers the distance (20 m) and the time (4 s)
c) This graph could be the right ooption but it is coming back and we look for a forward progress, then this graph is incorrect.
d) This graph shows that the dog is not moving, so this option is wrong.
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Answer:
50000 μT
Explanation:
From the given information:
the diameter of the loop = 1.0 mm = 0.001 m
no of turns (N) = 200
current (I) = 0.199 A
radius = d/2 = 0.001/2
= 5 × 10⁻⁴ m
Recall that;
the magnetic field at the centre of circular wire is:
= 0.05 T
= 50000 μT
Since the centre of the earth's magnetic field is given to be equal to the magnetic field produced by the wire, then:
the earth's magnetic field = 50000 μT