Answer: True
Explanation:
Distance is a scalar, which means it has no direction. It is the sum of the entire path traveled.
Displacement is a vector, which means it does have direction. It is the shortest path from the start to the end. It is defined as .
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Answer:</h2>
1750N/m
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Explanation:</h2>
According to Hooke's law, the spring constant (k) of an elastic material is the ratio of the force (F) applied to the material to the extension (x) of the material caused by this force. i.e
k = F / x --------------(i)
From the question, the elastic material (spring) of 25 coils has a spring constant of 350N/m. This means that for every 350N force applied to the spring, the spring extends by 1m.
Now if the spring is cut into five equal parts each with five coils, imagine they are attached together such that the same force of 350N is applied to still cause a total extension of 1m. Each spring contributes 1/5 of this extension.
Therefore, the extension caused by each spring is 1/5 of 1m = 0.2m
Since the same force of 350N is applied, substitute F = 350N and x = 0.2m into equation (i) as follows;
k = 350 / 0.2
k = 1750N/m
Therefore, the spring constant of each of the 5-coil spring is 1750N/m
Answer:
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.
Explanation:
"Oscilloscope" can be used to show the shape of a sound wave
Hope this helps!
Answer:
0.04594 cm
Explanation:
So, we need the wire melt when the max current density its . Now, we got our limit current, 0.58 A.
The current density its , so, with our data, we can obtain the cross area of the wire.
For a cylinder, the area its given by:
We can put all this in the equation for the max current density:
And now, we can work it a little:
using our values, max current density = , and limit current = 0.58 A,
And, of course, the diameter its two times the radius: