A steel rod having a cross-sectional area of 300 mm² and a length of 150 m is suspended vertically from one end. It supports a tensile load of 20 kN at the lower end. If the unit mass of steel is 7850 kg/m³ and E = 200 × 10³ MN/m², find the total elongation of the rod.
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Please show your detailed solution.
Note: the answer and the process should be in 4 decimal places.
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- 1) One of Dr. G’s CHEM 102 students is working part-time at a hardware store. A customer tells this student “I need a single stud (a wooden beam) from which I can cut two (2) pieces of 2.7m studs”. The student does the math, goes behind counter, and brings a stud cut to 5m length. Select the most sensible and scientific answer to this situation. A) 2.7 × 2 when operated as a significant figure multiplication, gets you 5 and the student is right. B) Hardware stores don’t comply with correct sig. fig. rules for measurements. C) The customer must pay for 5.4m worth; but he/she should only get 5m to take home. D) The word ‘Two (2)’ mentioned here carries infinite significance, so the student is wrong. E) The word ‘Two (2)’ mentioned here is not a ‘measurement’, therefore this is an example of a situation where there is disagreement between science and day-to-day life.The measured Eocell=+2.222 V. Using EoMg2+/Mg= -2.372 V, calculate Eo Sn2+/Sn in voltsApplication 14. Given the function f(x) = 3x3 - 48x find the following: (Round to 1 decimal place) a) The x and y intercepts [K/U: ] b) The local maximums and minimums [A:. c) Find any points of inflections [A: I d) Graph the function [C 5
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- The turbines in a hydroelectric plant are fed by water falling from a 40 m height. Assuming 90% efficiency for conversion of potential to electrical energy, and 6% loss of the resulting power in transmission, what is the mass flow rate of water (in kg/min) required to power a 150 W light bulb? [Write your answer to the nearest whole number]351145 TECHNO Define fundamental unit with an example. Why is the unit of force called a derived unit? ic a derived unit? Give its two examples. measurement Dats : D Graphite and iodine a y shine. Explain it with suitable yeasons. Graphite and are non-metals but the iodine are non- metals but REDMI NOTE 10 PRO KBYLWHARNA THAPA A chemical propertie39/99/2021 17:36The pharmacist attempts to weigh 80mg of sodium carbonate on a balance having a sensitivity requirement of 4mg. Calculate the maximum potential error in terms of percentage.
- Product: DRY SENSITIZED SOLAR CELL (a) How was it produced using nanotechnology? (b) What are the field/area where this product is already applied? (c) What are the Advantages/Benifits and the Disadvantages/Risks associated with this nano-product?1°F unny 1 O app. F1 edu.co 22 W S X CH3 | III CH3 F2 TH || bo CH3 CH3 # 3 E DII D Identify the monomer(s) used in the production of this polymer using an addition process. CH3 polypropylene IV Polypropylene (shown below) is a polymer used in many plastic bottles, containers, and packaging. F3 C CH3 You CH3 $ 4 R F F4 V % 5 F5 T G 49 Question 5 of 20 < 6 F6 B Y H F7 & 7 U N W A) I B) II C) III D) IV PrtScn J F8 8 Home I M F9 9 K End F10 PgUp L F11 PSolve the following problems completely, Express all final answers in four decimal places. Upload your solutions for "PROBLEM SOLVING: FLEXURAL STRESS" here. * 1 Add file (#1) A metal has a flexural stress of 564 Pa. The width of the metal, w, is measured to be 1 meter, while the load was 10 N. The thickness of the metal is twice its length. Using the formula on the three-point test of materials, compute for the thickness of the metal in centimeters. * 0.0133 O 1.3298 0.6648 no answer from the choices What is the L in centimeters of the same metal in (#1)? 0.0133 1.3298 O 0.6648 O no answer from the choices