Natalia lifts a bag of groceries 0.50 m by exerting a force of 36 N. How much work did she do on the bag?
2 answers:
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Lower resistivity means higher conductivity: among these materials, the best conductor is silver, therefore it must be the material with lowest resistivity among those. We can also have a look at the value of resistivity of the different materials listed in the problem, to check our answer. The resistivities of the materials are the following:
Wood:
Salt water:
Silver:
Lead:
<span>We see that the material with lowest resistivity among those is silver, therefore the correct answer is silver.</span>
Wood:
Salt water:
Silver:
Lead:
<span>We see that the material with lowest resistivity among those is silver, therefore the correct answer is silver.</span>
Answer:
Explanation:
We know that the volume of the material
= mass/density
mass= 360 Kg
density = 1450 kg/m^3
Volume= 360/1450= 0.248 m^3
and Volume = Area× equivalent Diameter
Area= 1200 m^2
⇒Equivalent Diameter= Volume/Area= 0.248/1200=