A metal ball of radius 90 centimeters is coated with a uniformly thick layer of ice, which is melting at the rate of 8pi cubic centimeters per hour. Find the rate at which the thickness of the ice is decreasing when the ice is 10 centimeters thick?

Q: The following data relate to a pump-out test: Diameter of well = 24 cm; Thickness of confined…

A:

Q: The diamter of precast round piles under pile cap is 400mm, the embedded depth of cap bottom is…

A: D(dia of pile) = 400mm = 0.4m Qu = 9 x qpa x Ab + α qsia x As

Q: MECHANICS OF MATERIALS Q3: For the beam shown in Figure (5), if the allowable stress at A and B are…

A: step 1-

Q: An incident occurs on a freeway that has a capacity in the northbound direction, before the…

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Q: ne shear plot, mor moment. ot the shear plot, e the maximum m

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Q: a)  A lane merge warning sign (shown below) is being installed near an entrance ramp on a freeway…

A: As per authoring guidelines, if the question number is not specified, the first question or three…

Q: 2m E G 5.8m 4.8m K 艹 5.8m 3.2m 3.2m 3.2m

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Q: 20. A 17-m thick soil has water table 4 m. below the ground surface. The soil has a void ratio of…

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Q: (b) hear and bending moment. (c) Draw the shear-force and bending- moment diagrams for this beam.…

A: (b) Shear and Bending Moment : ∑MA=060×18×9 + 900×4 + 400×18 - RC×12 = 0RC=1710 lb ↑∑V=0RA+RC=60×18…

Q: Determine the forces in all members using method of joints. 10. E C 5m each H B A 100N vertical…

A: Given,

Q: Problem B Equipment Estimating Use the following information for a scraper. Actual cost (delivered)…

A: Total useful life = 6 years at 1400 hrs per year = 8400 hrs Oil Change or lubrication schedule=…

Q: y 100 mm 140 mm 50 mm 140 mm -200 mm X

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Q: A 1.0 m B 2 kN/m 2 m 5 kN 1.0 m FIG. P5.18 b 200 mm

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Q: In the overhanging beam show, determine P so that the moment over each support equals the moment at…

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Q: Figure 1 shows a rigid body supported by a truss system, all elements are pinned at both ends. If a…

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Q: Z A B P 20-mm diameter 60-mm diameter

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Q: The tower in Figure 1 is subjected to three compressive forces 4kN, 5kN, 6kN at joints G, E and C…

A: Calculate the stresses in MPa in members AC, CE and FD if the cross sectional area of each member is…

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A: From Continuity Equation Q=AV V=Q/A=…

Q: Angela wants to determine the permeability of an aquifer. The aquifer has a test well 300-mm in…

A: The diameter of test well, d=300mmThe radius, r=d2=150mmThe radial distance of first observation…

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Q: 2-97. The gate is 1.5 m wide, is pinned at A, and rests on the smooth support at B. Determine the…

A: Given:- The width of the gate = 1.5 m  The gate is pinned at point A The gate rests on the smooth…

Q: The 16-foot solid steel shaft has been twisted 4 times. Determine the diameter d of the shaft if the…

A: ASKED: To determine the diameter of the solid circular shaft.   Given, Length of the shaft (L) = 16…

Q: Question 2 Compute the area (in acres) of the irregular tracts of land. (All distances are in feet)…

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Q: 3. Determine the 100 year flow of a 70 square mile watershed in Region 12 of Arizona at an elevation…

A: Given:- The period of flow = 100 year The area of the watershed = 70 mile2  The elevation of the…

Q: 6. The total pressure on the surface of a vertica sluice gate 2 m x 1 m with its top 2 m surface…

A: Given data: A vertical sluice gate 2 m × 1 m With its top 2 m Surface being 0.5 m below the water…

Q: 4. What is the porosity of a soil having a void ratio of 1.234? Round off to two decimal places.

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Q: The following are results of a field unit weight determination test using sand cone method: Volume…

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Q: Two bars A and B are each 2 m in length, and each has a mass of 4 kg. In Fig. (a), bar A has no…

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Q: A strain gage is installed in the longitudinal direction on the surface of an aluminum beverage can…

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Q: Design an axially loaded square tied column for a service dead load of 1070 kN and a service live…

A: Solution: Given: Live load = 981 kN Dead load = 1070 kN Span = 2.5 m fc = 27.60 MPa fy = 413.5 MPa…

Q: 10 in Problems 4.54-4.55 = The bar has a solid circular cross section. Its polar moment of inertia…

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Q: The speed of the traffic flowing past EDSA between the hours of noon and 7:00pm is approximately…

A: To Find :- at what hours traffic movement is slowest? V = t3-9t2+15t+40

Q: A 8 kN B 8 kN 20 kNm -1 m 0.25 m Reaction at support A=? C₁ D -0.75 m 1 m- 15 kN/m -1m-

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Q: A simple beam AB is loaded by two segments of uniform load and two horizontal 900 lb 400 lb 60 lb/ft…

A: Solution of only part A is presented here as asked by you . The Solution is in next steps

Q: a) Write the Shear and Moment Equations of the Beam shown.  b) Draw the Shear and Moment Diagram…

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Q: 18. A consolidated tri-axial test was conducted on a normally consolidated clay. The results were as…

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Q: 50 kN/m

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Q: There are many different types of ALM environments, but here are a few to get you started:

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Q: Determine the force in member CD Determine the force in member DG Determine the force in member DH

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Q: 1. Draw the shear and bending moment Diagram of the following A) 71kN/m A B |—3 m— 8 m B) 48kN/m 9 m…

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Q: reflection on LEED Study of Green Lightweight Aggregates in Construction

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Q: . Determine the specific gravity of soil solids based on the data below: Initial volume of soil in…

A: Final mass of 30.10g  should be dry mass. Because saturated mass is already mentioned.

Q: No. 3. A simply supported wood beam of rectangular cross section and span length, L = 1.2 m carries…

A: L = 1.2 m = 1200 mmb = 140 mmh = 240 mm Self weight of the beam represented as Uniformly distributed…

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Q: The discharging capacity of a masonry waste weir of 50 m

A: Masonry weir of Length, L=50 m  Width, B=1 m Depth of water above crest, D=0.8 m     To find:…

Q: No. 2. For the cantilever beam and loading shown, plot shear and bending moment diagrams and then…

A: ASKED: To draw the shear and moment diagrams and determine the corresponding maximum values.

Q: 4) Use the Slope Deflection Method to calculate all the reactions Draw the complete Shear and Moment…

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Q: Water flows from the nozzle shown in figure. Determine the flowrate and the .height (h) to which the…

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Hydrogen Energy

Energy is a quantity that cannot be defined, its existence can only be felt. In simple language, if a system possesses energy, it can do a specific kind of work. There are many forms of energy sources which people can use to obtain work. Solar energy, tidal energy, hydroelectric energy, geothermal energy, wind energy are some of the renewable energy sources which are primarily used for the production of electricity.