5) The stress-strain graphs for materials P and Q are shown in figure, a) which of the materials has the greater Young's modulus? b) Which of the two is the stronger material?
say fast
if it is wrong I will report
say fast
if it is wrong I will report
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Material A has greater Young's modulus as the slope of the graph of material A is greater than material B. ∴ Material A has greater Young's Modulus. 2. From the graph it can be approximated that the stress at the fracture point for material A is higher than material B, thus material A is stronger.19-Feb-2020
Answer:
Newland’s law of Octaves explains when elements are arranged by increasing atomic mass, the properties of every eighth element starting from any element are a repetition of the properties of the starting element.
Newland’s law of Octaves was discarded for the following reasons
Classification did not work with heavier elements beyond Calcium.
Newland classified two elements Cobalt and Nickel in the same slot, and these were placed in the samee column as Fluorine, Chlorine and Bromine.
Iron which resembles Cobalt and Nickel was placed far away from these elements.