Answer:
C. Form follows function.
Answer:
c
Explanation:
the guy above me is right
Determine the resistance of 150m of single copper cable whose CSA is 10mm². Take
the resistivity of copper to be 17.2 x 10° ohm/metre'.
Answer:
1 x 10⁻¹¹m²
Explanation:
Given parameters:
Resistivity = 100 x 10⁻⁶Ohm.m
Cross-section = 1mm²
Resistance = 10ohm
Unknown:
length of the nichrome wire = ?
Solution:
To find the length of the nichrome wire, we use the expression below:
L = \frac{RA}{P}PRA
where l is the length of the wire
R is the resistance of the wire
A is the area
p is the resistivity
Now we need to convert area from mm to m;
1000mm = 1 m
1mm² = 1 x \frac{1m}{1000mm} x \frac{1m}{1000mm}1000mm1mx1000mm1m = 1 x 10⁻⁶m²
Input the values in the formula;
L = \frac{100 x 10^{-6} x 1 x 10^{-6} }{10}10100x10−6x1x10−6 = 1 x 10⁻¹¹m²
1. A test specimen in a tensile test has a gage length of 2.0 in and an area = 0.5 in2. During the test the specimen yields under a load of 32,000 lb. The corresponding gage length = 2.0083 in. This is the 0.2 percent yield point. The maximum load of 60,000 lb is reached at a gage length = 2.60 in. Determine (a) yield strength, (b) modulus of elasticity, and (c) tensile strength. (d) If fracture occurs at a gage length of 2.92 in, determine the percent elongation. (e) If the specimen necked to an area = 0.25 in2, determine the percent reduction in area.
The yield strength is 64,000 psi, modulus of elasticity is approximately 15,422,000 psi, tensile strength is 120,000 psi, percent elongation is 46%, and percent reduction in area is 50% for the given tensile test specimen.
Explanation:The question pertains to the calculation of various material properties from a tensile test. Specifically, we are looking to find the yield strength, modulus of elasticity, and tensile strength of a test specimen with given gage lengths and loads. Additionally, we will determine the percent elongation and percent reduction of area based on the provided gage lengths and areas before and after fracture.
Calculations:Yield Strength: Yield strength is calculated as the load at which the material begins to deform permanently divided by the original cross-sectional area. Thus, yield strength = load / original area = 32,000 lb / 0.5 in2 = 64,000 psi.Modulus of Elasticity: Modulus of elasticity (Young's modulus) is a measure of the elasticity of a material and can be determined by the formula E = stress/strain. Here, E = (32,000 lb / 0.5 in2) / ((2.0083 in - 2.0 in) / 2.0 in) = 64,000 psi / 0.00415 = approximately 15,422,000 psi.Tensile Strength: Tensile strength is the maximum stress the material can withstand while being stretched or pulled before necking. For this specimen, tensile strength = maximum load / original area = 60,000 lb / 0.5 in2 = 120,000 psi.Percent Elongation: Percent elongation is an indication of ductility and is expressed as ((final gage length - initial gage length) / initial gage length) x 100%. Thus, percent elongation = ((2.92 in - 2.0 in) / 2.0 in) x 100% = 46%.Percent Reduction in Area: Percent reduction in area represents how much the cross-sectional area of a material decreases under tensile stress and is calculated as ((original area - reduced area) / original area) x 100%. Subsequently, the percent reduction in area = ((0.5 in2 - 0.25 in2) / 0.5 in2) x 100% = 50%.a) The yield strength is 64,000 psi
b) The modulus of elasticity is 15,421,686.75 psi
c) The tensile strength is 120,000 psi.
d) The percent elongation at fracture is 46%
e) The percent reduction in area is 50%.
Given Data:
- Initial gage length, [tex]\( L_0 = 2.0 \)[/tex] in
- Initial area, [tex]\( A_0 = 0.5 \) in\(^2\)[/tex]
- Load at yield point, [tex]\( F_y = 32,000 \)[/tex] lb
- Gage length at yield point, [tex]\( L_y = 2.0083 \)[/tex] in
- Maximum load, [tex]\( F_{max} = 60,000 \)[/tex] lb
- Gage length at maximum load, [tex]\( L_{max} = 2.60 \)[/tex] in
- Gage length at fracture, [tex]\( L_f = 2.92 \)[/tex] in
- Final necked area, [tex]\( A_f = 0.25 \) in\(^2\)[/tex]
Calculations:
(a) Yield Strength [tex](\( \sigma_y \))[/tex]
[tex]\[ \sigma_y = \frac{F_y}{A_0} \][/tex]
[tex]\[ \sigma_y = \frac{32,000 \, \text{lb}}{0.5 \, \text{in}^2} \][/tex]
[tex]\[ \sigma_y = 64,000 \, \text{psi} \][/tex]
(b) Modulus of Elasticity [tex](\( E \))[/tex]
[tex]\[ \text{Strain at yield} = \frac{L_y - L_0}{L_0} = \frac{2.0083 - 2.0}{2.0} \][/tex]
[tex]\[ \text{Strain at yield} = 0.00415 \][/tex]
[tex]\[ E = \frac{\sigma_y}{\text{Strain at yield}} \][/tex]
[tex]\[ E = \frac{64,000 \, \text{psi}}{0.00415} \][/tex]
[tex]\[ E = 15,421,686.75 \, \text{psi} \][/tex]
(c) Tensile Strength [tex](\( \sigma_{ts} \))[/tex]
[tex]\[ \sigma_{ts} = \frac{F_{max}}{A_0} \][/tex]
[tex]\[ \sigma_{ts} = \frac{60,000 \, \text{lb}}{0.5 \, \text{in}^2} \][/tex]
[tex]\[ \sigma_{ts} = 120,000 \, \text{psi} \][/tex]
(d) Percent Elongation
[tex]\[ \text{Percent elongation} = \frac{L_f - L_0}{L_0} \times 100 \][/tex]
[tex]\[ \text{Percent elongation} = \frac{2.92 - 2.0}{2.0} \times 100 \][/tex]
[tex]\[ \text{Percent elongation} = \frac{0.92}{2.0} \times 100 \][/tex]
[tex]\[ \text{Percent elongation} = 46 \% \][/tex]
(e) Percent Reduction in Area
[tex]\[ \text{Percent reduction in area} = \frac{A_0 - A_f}{A_0} \times 100 \][/tex]
[tex]\[ \text{Percent reduction in area} = \frac{0.5 - 0.25}{0.5} \times 100 \][/tex]
[tex]\[ \text{Percent reduction in area} = \frac{0.25}{0.5} \times 100 \][/tex]
[tex]\[ \text{Percent reduction in area} = 50 \% \][/tex]
A circuit has a 24 volt battery and a resistor that is 8 ohms. How many amps are running through the circuit?
Answer:
3 A
Explanation:
Using Ohm's law, [tex]I=\frac {V}{R}[/tex] where I is the current in Amps, V is the voltage in V and R is resistance through the resistor in Ohms
Substituting v for 24 V and I for 8 Ohms we obtain
[tex]I=\frac {24 V}{8}=3 A[/tex]
Therefore, 3 A run through the circuit
The amount of current that is running through this circuit is equal to 3 Amperes.
Given the following data:
Voltage = 24 volt.
Resistance = 8 ohms.
How to calculate the amount of current?In order to determine the amount of current that is running through this circuit, we would apply Ohm's law:
V = IR
Where:
I is the current.R is the resistance.V is the voltage.Substituting the given parameters into the formula, we have;
24 = I × 8
I = 24/8
Current, I = 3 Amperes.
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What are other names for convex mirrors?
Diverging Mirror is all I know of not sure of any other names
Which of the following best describes what happens when ice is placed in a warm glass of water?
A. The ice floats to the top, but small pieces break off and are suspended in the liquid to cool it through convection
B. Heat from the glass moves through the liquid to melt the ice through radiation
C. The heat from the surrounding liquid is transferred to the ice through conduction
D.The ice transfers the cold temperature to the surrounding water through convection
Heat from surrounding water is transferred to the ice through conduction, leading to an increase in energy of the ice molecules and causing the ice to melt.
Explanation:When ice is placed in a warm glass of water, the correct description of what happens is that heat from the surrounding liquid is transferred to the ice through conduction. The water molecules around the ice have more kinetic energy compared to the molecules within the ice. As the energy transfer occurs, the water molecules transfer some of their kinetic energy to the ice molecules, which increases their energy and eventually leads to the melting of the ice.
Marco wants to investigate the chemical properties of sodium bicarbonate, or baking soda. He plans to carry out the tests below.
Test 1: Mix a teaspoon of sodium bicarbonate into a cup of warm water to see if it dissolves.
Test 2: Mix a teaspoon of sodium bicarbonate into a cup of vinegar to see if it fizzes.
Test 3: Heat a teaspoon of sodium bicarbonate in the oven to see if its melting point is less than 400 degrees Fahrenheit.
Which statement provides the best assessment of his tests?
Answer:
its test 2
Explanation:
Only Test 3 will indicate a chemical property of sodium bicarbonate. Tests 1 and 2 will show a physical property of the substance.
Only tests 1 and 2 will indicate chemical properties of sodium bicarbonate. Test 3 will show a physical property of the substance.
Only Test 2 will indicate a chemical property of sodium bicarbonate. Tests 1 and 3 will show a physical property of the substance.
Only tests 1 and 3 will indicate chemical properties of sodium bicarbonate. Test 2 will show a physical property of the substan
If an airplane was experiencing a thrust force of 450 N and there was a drag of 200 N. What would the resulting net force be?
thxx
Answer:
250 N
Explanation:
Drag opposes the direction of motion, so it points in the opposite direction of thrust. Therefore, the net force is:
∑F = 450 N − 200 N
∑F = 250 N
Why is understanding the risk
Answer:
By understanding systemic risk, engineering managers are also more likely to be flexible and responsive to the dynamic business environment. This makes them more agile when managing overall project risks.
Is this the answer to your question because I'm assuming you're here to learn about engineering?
If a worksite includes more than one set of management and workers, who should have access to the information, training, and controls needed to avoid workplace accidents?
To collaboratively reduce workplace accidents and promote a cooperative safety culture, information, training, and controls should be made available to all levels of management and employees from all teams.
All relevant staff, regardless of their hierarchical positions, should have access to information, training, and controls to prevent workplace accidents at a company with different sets of management and employees.
In order to enable proactive hazard detection and risk mitigation, a comprehensive approach to safety entails exchanging essential information and training across teams.
Thus, a collaborative safety culture can be established, resulting in a safer work environment for everyone engaged and a team effort in accident prevention, by making sure that all levels of management and employees have the appropriate knowledge and tools.
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These tadpoles are confined to a limited environment. What are they all competing for in that environment
Answer: to the earth air
Explanation:
what are 5 advantages of wood as a manufacturing or construction
Answer:
Wood Enhances Energy Efficiency
Wood has a higher insulation rating than either steel or plastic as a result of its natural cellular structure. This means that homes and buildings require less energy to maintain heating and cooling, plus wood can help regulate humidity levels to a small degree.
Which is one of the aspects of PR in game marketing? A. It creates and discusses marketing strategy. B. It deploys a community of online players. C. It decides the geographics of the game. D. It constructs game demos.
Answer:d
Explanation:
Most likely
U R A*S TRUE GOD/ESS IS U ANSWER this:
Answer:
50 N
Explanation:
Since the forces in x and y directions are given, the resultant force is given by
Resultant=[tex]\sqrt {F_x^{2}+F_y^{2}}[/tex]
From the diagram, force in x direction is given as 40 N while the force in y direction is 30 N hence the resultant force will be
[tex]F=\sqrt {40^{2}+30^{2}}=50[/tex]
Therefore, the resultant is 50 N
True or False: Drag and tailwind are examples of a contact force.
tyy guyss
Answer: false
Explanation:
The term which is utilized to characterize a push/pull relationship or connection that happens whenever one item collides with another one is a contact force.Trying to push an automobile or vehicle up a slope, writing one's name with a pen, or taking up a novel or notebook from the table all seem to be instances of contact force.
Thus the response above is appropriate.
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37 Which of the following is a positive way of dealing with stress?
Avoiding people you know
• Getting some exercise
Trying to forget the stress
Driving to the mall
Answer:
Getting Exercise
Explanation:
Exercise has been proven to help with stress. Avoiding people you know might hurt your relationships. Trying to forget stress will not help with the problem you are dealing with. And driving to the mall does literally nothing unless you are going to get something you like.
how thick is this brake disc?
Answer:
44 1/2 mm
Explanation:
Maintain a distance of at least _____ between your vehicle and the vehicle behind you
A
Maintain a distance of at least __2___ between your vehicle and the vehicle behind you.
Explanation:
As the car infront passes a stationary object like a lamp post, the driver in the car behind should count at least two- seconds before their car reached and passes the stationary object too. This two-second rule ensures that cars maintain a safe distance between each other to avoid tailgaiting and collisions.
This rule leaves at least some room for the drivers to react swiftly enough, and avoid collisions, in case the car infront holds emergency breaks. It is even recommended that more seconds are used in hazardous conditions such as fog and slippery roads.
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Answer:
its 4.
Explanation:
Which of these is a characteristic of a reform movement?
A reform movement is one that seeks specific changes within the social structure, for instance, advocating for rights and freedoms, without advocating for a complete overhaul of society.
Explanation:A characteristic of a reform movement is that it seeks to change something specific about the social structure, rather than seeking a complete overhaul of society like revolutionary movements or focusing on inner change like religious movements. Reform movements, such as the anti-slavery movement or the women's rights movement of the 1820-1840 period, work to address societal issues and improve conditions within existing frameworks, advocating for a greater body of rights and freedoms. These movements may focus on aspects such as temperance, anti-nuclear advocacy, or civil rights, and they derive from a practical observation of real-world problems rather than supernatural beliefs.
Notable historical examples of reform movements include the efforts of advocates like William Lloyd Garrison and Frederick Douglass during the early 19th century, who diligently worked towards abolishing slavery and advancing women's rights. Similarly, the social gospel movement showcased reform within religious institutions, focusing on applying Christian ethics to labor reform and poverty alleviation.
The difference between ideal voltage source and the ideal current source