A child walks 5.0 meters north, then 4.0 meters east, and finally 2.0 meters south. what is the magnitude of the resultant displ
acement of the child after the entire walk
2 answers:
Answer:
Resultant displacement of the child is 5 m.
Explanation:
It is given that, a child walks 5.0 meters north, then 4.0 meters east, and finally 2.0 meters south.
We have to find the magnitude of displacement of the child after the entire walk. The attached figure shows entire journey of the child. Displacement of an object is equal to the shortest path covered by it. Here, AM shows the net displacement. It can be calculated using Pythagoras theorem as :
Since, AB = 5 m So, OA = 3 m and BC = OM = 4 m
⇒ AM = 5 m
Hence, the resultant displacement of the child after the entire walk is 5 m.
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Answer:
the tension in the string an instant before it broke = 34 N
Explanation:
Given that :
mass of the ball m = 300 g = 0.300 kg
length of the string r = 70 cm = 0.7 m
At highest point, law of conservation of energy can be expressed as :
The tension in the string is:
Thus, the tension in the string an instant before it broke = 34 N
The value of the equivalent resistance for the three resistors connected in series will be the sum of the three values.
To find the answer, we have to know more about the equivalent resistance.
<h3>What is meant by equivalent resistance?</h3>- equivalent resistance is the total value of the resistance connected in a circuit.
- If n resistors are connected in series, then the equivalent resistance will be,
- In our question we have three resistors. Thus, the equivalent resistance will be,
Thus, we can conclude that, the value of the equivalent resistance for the three resistors connected in series will be the sum of the three values.
Learn more about the equivalent resistance here:
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