A cone penetration test was carried out in normally consolidated sand, for which the results are summarized below: Depth (m) Cone resistance, qc (MN/m2 ) 2.0 3.12 3.5 4.25 5.0 5.14 6.5 9.23 8.0 12.2 The average unit weight of the sand is 16.5 kN/m3 . Determine the friction angle at each depth using Eq. (3.52)
Answers
Answer:
hello your question is incomplete attached below is the missing equation related to the question
answer : 40.389° , 38.987° , 38° , 39.869° , 40.265°
Explanation:
Determine the friction angle at each depth
attached below is the detailed solution
To calculate the vertical stress = depth * unit weight of sand
also inverse of Tan = Tan^-1
also qc is in Mpa while σ0 is in kPa
Friction angle at each depth
2 meters = 40.389°
3.5 meters = 38.987°
5 meters = 38.022°
6.5 meters = 39.869°
8 meters = 40.265°
Related Questions
Consider one-dimensional heat conduction through a large plane wall with no heat generation that is perfectly insulated on one side and is subjected to convection and radiation on the other side. It is claimed that under steady conditions, the temperature in a plane wall must be uniform (the same everywhere). Is this claim reasonable
Answers
Answer:
YES, this claim reasonable
Explanation:
the temperature in a plane wall is uniform since no heat is penetrating into the large plane wall and therefore, there is no heat transfer from the wall under steady conditions,
This condition will be met only when there are no temperature differences within the wall and the the outer surface temperature of the wall is equal to the temperature of its surrounding.
Therefore, Yes, this claim is reasonable
Consider a single crystal of some hypothetical metal that has an FCC crystal structure and is oriented such that a tensile stress is applied along a[102] direction. If slip occurs on a( 111) plane and in a [ 101] direction, compute the stress at which the crystal yields if its critical resolved shear stress is 12.76 MPa.
a. 13.96 MPa
b. 52.1 MPa
c. 0 MPa
d. 30.9 MPa
e. 3.1 MPa
Answers
what are material engineers trying to discover when they study different materials
Answers
Answer:
The Material engineers trying to discover when they study different materials is described below in complete detail.
Explanation:
Material engineers analyze various elements to discover the purpose and explanation of its existence, the chemical characteristics, how long it has stood there, and how it influences human life. The material engineer is an engineering exercise that concentrates to enhance human activity by investigating the environment and the diverse elements or elements it holds.
Describe how self-healing polymers could be useful in the construction of
plastic frames for glasses and sunglasses.
Answers
Answer:
This can be achieved through the use of a built-in fiber-optic network of cables that deliver light and heat energy to the point of breakage.
Explanation:
Self-healing polymers are materials designed to aid the internal healing of materials like plastics, and metals. Shape-memory materials used in the making of plastic frames for glasses and sunglasses allow these materials to snap back into shape when they crack.
This is possible because heat is needed to help a deformed material regain its shape. Built-in fiber-optic network of cables serve the purpose of delivering heat to the deformed or cracked area, thus helping them to regain their shape.
Time management is a learned behavior.
True
False
Answers
Answer:
true
Explanation:
Assume that 50,000 yd3 of the soil from a local borrow pit in Rhode Island, with a water content of 13% and dry unit weight of 87 pcf, is to be delivered to a construction site for some repairs of highway in I-95. By the time it reaches the site, the water content is 9%. It will be compacted to a minimum of 90% of the modified Proctor maximum dry density. Determine the total amount of water (in pounds), that must be added to the soil to increase the moisture content to the optimum level. Assume a Gs
Answers
Answer:3000 yd3
Explanation:
so i got the 50000 divided it by 100 times that by 13 and got 4500 yd3
so now the soil is at 9 so i need to get the 4 percent back up so i yet again got 50000 yd3 and divided by 100 and times it by 9 to get 1500 yd3 to then minus my 1500 and 4500 yd3 and got 3000 yd3 i hope it is right.
Were you surprised by the “pie data”? Is it true for you, your family, and your friends? Why or why not?
this is a coding question, and pie data is a misprint. It is actulaly big data.
Answers
Answer:
No because it is something to gain knowledge of peoples lives.
Answer: i was not suprised because, it is something all people need to know to gai knowledege about it.
Rigid bar ACB is supported by an elastic cir-cular strut DC having an outer diameter of 15 in. and inner diameter of 14.4 in. The strut is made of steel with a modulus elasticity of load P 5kips5 E 5 29,000 ksi. Point is applied at B. Calculate the change in length of the circular strut DC. What is the vertical displacement of the rigid bar at point B
Answers
Answer:
The change in length of the circular strut DC = 0.0028 in.
The vertical displacement of the rigid bar at point B = 0.00378 in.
Explanation:
We have the following parameters or information in the question given above:
=> The outer diameter = 15 in., the inner diameter = 14.4 in., the modulus elasticity of E = 29,000 ksi, and the Point load P = 5kips.
The diagram showing the rigid bar ACB is supported by an elastic cir-cular strut DC is given in the attached picture below.
According to Newton's law of motion, it can be seen that the force on CD, that is FCD is equal and opposite to ACD. Hence, FCD = ACD.
Where FCD = p × [4 + 5] ÷ [sin Ф × 4].
kindly note that from the diagram sin Ф = 3/5, cos Ф = 4/5 and tan Ф = 3/4. Also p =5.
Hence, FCD =[ 5 × 9] ÷ [3/5 × 4] = 18.75 kip. So FCD = ACD.
The next thing here is to determine the area and length of CD, say the area of CD is G, thus, G = π/4 × [ 15² - 14.4²] = 13.854 in².
The lenght of CD is = √[4² + 3²] = √[16 + 9] = 5ft. Thus, 5 × 12 = 60in.
Hence, the change in length of the circular strut DC = [18.75 × 60] ÷ 13.854 × 29000 = 0.0028 in.
The vertical deflection of CD = 0.0028 × 3/5 = 0.00168 in.
We have that; 4 /CV = 9BV. Hence, BV = 9/4× CV.
(CV = vertical deflection of CD).
The vertical displacement of the rigid bar at point B = 9/ 4 × 0.00168 in = 0.00378 in.
Question Completion Status:
The point of application of the total pressure on surface is
O a. None of the above
O b. Centroid of the surface
O c. Centre of pressure
Answers
Answer: c. Centre of pressure
Explanation:
Pressure is applied on a surface when a force is exerted on a particular point on that surface by another object when the two come into contact with each other.
The point where the pressure is applied is known as the centre of the pressure with the force then spreading out from this point much like an epicentre in an earthquake.
The answer is all income (&) expenses
Answers
Answer:
NICE
Explanation:
Please answer ASAP!!
Which statement correctly describes why the electric pole has bent?
A.) Tensile stress acting on the pole caused it to bend.
В.) Compressive stress acting on the pole caused it to bend
С.) The force acting on the pole exceeded its yield strength.
D.) The force acting on the pole exceeded its compressive strength.
Answers
Answer:
С.) The force acting on the pole exceeded its yield strength.
Explanation:
Answer:
The correct answer is C. The force acting on the pole exceeded its yield strength.
Explanation:
I got it right on the Plato test.
Who developed the process of blueprinting?
A.
Michelangelo Buonerotti
B.
Raphael Sanzio
C.
Sir John Herschel
D.
Vitruvius
Answers
What is "Engineering"?
Answers
A brake caliper is considered a suspension item.
True
False
Answers
Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two.[1] Suspension systems must support both road holding/handling and ride quality
what car has autopilot?
Answers
tesla lol how did you not know that?
Answer:
Tesla is a car that is able to drive automatically.
Draw a FBD of the beam with reactions at A & B. A is a pin, B is a roller. Try to guess intuitively which way the vertical components of A & B are pointing. Do not show the 6 kN forces in your FBD. Only show the couple moment, or pure moment
Answers
Answer:
kindly check the drawing of the FBD of the beam with reactions at A & B. A is a pin, B is a roller in the attached picture.
Explanation:
Without further ado, let's dive straight into the solution to the question above. From the diagram of the FBD of the beam with reactions at A & B it can be shown that the reaction moment is anticlockwise while the moment is clockwise.
The system is at equilibrium and the it does not matter where you place the couple (pure) moment.
The distance from A to C can either be equal or not. If AY = 2.15 kN and M = 25.8. Then, the distance between A and B = 25.8/2.15 = 12m.
Consider a continuous-flow, indraft supersonic wind tunnel, which uses a vacuum pump to draw atmospheric air from outside of the wind tunnel building through a converging-diverging nozzle, to establish the supersonic flow in the test section. Assuming a standard day in Morgantown, WV (elevation of 961 feet) and a Mach number of 2.0 in the test section, compute the following:_____
a) The test section temperature
b) The test section pressure, assuming isentropic flow
c) The test section velocity
d) The change in the specific enthalpy of the air
Answers
Bob would like to run his house off the grid, therefore he needs to find out how many solar panels and batteries he needs to buy.
The power output of a 250 W solar panel is p=250−10(t−5)2 watts for the average 10 hour day. He plans on using 12 V, 120 A⋅h batteries and would like to able to store 3 days worth of energy. Bob's house uses 1100 kW⋅h per month (30 days).
Answers
Answer:
stink
Explanation:
Convenience items like liquid egg are a lot more expensive?
True
Or False
Answers
Answer:
True
Explanation:
It's just because of the processing
what is an unit resistance
Answers
Answer: Ohm Ω
Explanation:
The resistance can be defined as the hindrance offered to the flow of current. Lower the current the higher is the resistance. The SI unit of resistance is ohm Ω. When one ampere current flows from an object or wire the application of one volt of potential difference on it the resistance so produce is one ohm. Resistance can be achieved by the application of the certain gadgets in the circuit which can prevent the flow of excess current from devices and can prevent shock circuit.
(25%) A well-insulated compressor operating at steady state takes in air at 70 oF and 15 psi, with a volumetric flow rate of 500 ft3 /min, and compresses it to 60 psi. The power input to the compressor is 80 horsepower. Kinetic and potential energy changes from the inlet to exit can be neglected. Determine the exit temperature, in oR.
Answers
Answer:
You can look it up
Explanation: if you don't know what it is look it up on .
Calculate the percentage of recyclables in high socioeconomic localities.
Answers
Answer:
The percentage of recycling in high socioeconomic localities is 11.02%.
Explanation:
Since in high socioeconomic localities, 10% of paper is recycled, 12% of plastic, 1.7% of fabrics, 1.2% of rubbers, 0.9% of metals, 3.5% of glass, 33% of food wastes, 35% soil and 1.9% miscellaneous, to determine the average recycling percentage the following calculation must be performed:
(10 + 12 + 1.7 + 1.2 + 0.9 + 3.5 + 33 + 35 + 1.9) / 9 = X
99.2 / 9 = X
11.02 = X
Therefore, the percentage of recycling in high socioeconomic localities is 11.02%.
Rigid bar ABC is supported by three symmetrically-positioned vertical rods, which are initially unstrained. After load P is applied, the normal strain in rods (2) is 0.0010 mm/mm. Determine the normal strain in rod (1) if there is a gap of 1.0 mm in the connection between rod (1) and the rigid bar at B. Report the strain in mm/mm
Answers
Answer:
The answer is below
Explanation:
The lengths of the rods are not given.
Let us assume the length of rod 1 = 1500 mm and the length of rod 2 = 800 mm
Solution:
The normal strain is defined as the change in member length δ divided by the initial member length L. The normal strain (ε) is:
ε = δ / L
δ = εL
For rod 1:
[tex]\delta_2=\epsilon_2 L_2\\\\\delta_2=0.0010\ mm/mm*1500\ mm=1.5\ mm[/tex]
The axial elongation of rod 2 is 1.5 mm. Since rigid bar ABC is attached to rod 2, the rigid bar move down by same amount.
The rigid bar moves down 1.8 mm but rods 1 will not be stretched by this amount. Because there is a gap between rod (1) and the rigid bar at B, the first deflection of 1 mm would not cause an elongation in rod 1. Therefore, the elongation in rods (1) is:
[tex]\delta_1=1.5\ mm-1\ mm=0.5\ mm[/tex]
The normal strain in rod 1 is:
[tex]\epsilon_1=\frac{\delta_1}{L_1} =\frac{0.5\ mm}{800\ mm} \\\\\epsilon_1=0.000625\ mm/mm[/tex]
2 Describe the four major disciplines of engineering and identify problems or projects that an engineer in each discipline might encounter. Chemical engineering Civil engineering . Electrical engineering Mechanical engineering
Answers
Answer:
Chemical engineering
Uses chemical processes to find new ways to produce goods. Making antibiotics, pesticides, safe clothes, and foods.
· Civil engineering
Builds structures to try and make them efficient. Makes a tornado-proof house, explosion-proof bunker, or easily navigable subway system.
· Electrical engineering
Develops the electrical components for things. Game systems, keyboards, projectors, or hard drives.
· Mechanical engineering
Mechanical engineers work with things with mechanical processes and moving parts. Drills, wheels, elevators, or cranes.
·
·
·
What is a kind of useful car?
Answers
PLEASE HELP THIS IS A TEST I WAS SUPPOSE TO DO 8 HOURS AGO.
An object has a width of 1.0 in. if you were to create a 1:4 scaled drawing of this object, what would the dimensions of the drawing be?
Answers
A three-phase transformer connection has a delta-connected secondary, and one of the transformers has been center-tapped to form a neutral conductor. The phase-to-neutral value of the center-tapped secondary winding is 120V. If the high leg is connected to a single-phase load, how much voltage will be applied to that load
Answers
Answer:
207.84 V will be applied to that load.
Explanation:
Given that;
The phase-to-neutral value of the center-tapped secondary winding is 120V
the high leg is connected to a single-phase load
voltage that will be applied to that load = ?
Now, the the high leg voltage will be 1.732 times the single phase center tapped voltage .
so
Load Voltage = 1.732 × 120V
Load Voltage = 207.84 V
Therefore, 207.84 V will be applied to that load.
Considering how likely the risk is to affect the company’s profits is part of which component of risk management?
Risk identification
Risk assessment
Risk control
Risk mitigation
Answers
what is a car that self driving
Answers
Answer:
It is when a person don't have to drive, the car can move by itself. (That's what I think it is) Hopes it help :)
Explanation:
In your own words how does an airplane take off?
Answers
Answer:
Explanation:
How does an aircraft take off?
They are lift, weight, thrust and drag. Lift pushes the airplane up. The way air moves around the wings gives the airplane lift. The shape of the wings helps with lift, too.
HOPE THIS HELPS!
