Answer:
Steel and wood
Explanation:
For a material to resist stress and vibration, it must have high ductility, which is the ability to undergo large deformations and tension. Modern buildings are often constructed with structural steel, a component that comes in a variety of shapes and allows buildings to bend without breaking.
How long does it take to freeze a 100 mm diameter sphere of pure Aluminum in a plaster mold assuming: a. No superheat and neglecting the heat flow divergence (contour effects) b. No superheat and considering heat flow divergence c. What is the error for neglecting contour effects
Answer:Pressure = 11.38 psi
Force = 13.981 Ibf
Explanation: your welcome ;)
Is reinforcement needed in a retaining wall
g ideal air conditioner maintains a house at 20 by dumping heat into the atmosphere at 40 this refrigerator has a coefficient of performance of
AnsweCalculate a heat pump's coefficient of performance. ... Heat pumps, air conditioners, and refrigerators utilize heat transfer from cold to hot.Explanation:
As you push a toggle bolt into a wall, the
toggle collapses through the wall then does
which of the following?
How many hours must be traveled by car for each hour of rock climbing to make the
risks of fatality by car equal to the risk of fatality by rock climbing? (FAR for car
travelling is 52 and FAR for rock climbing is 3400).
The number of hours that must be travelled by car to make the risks of fatality by car equal to the risk of fatality by rock climbing is = 65hours
Calculation of risk of fatalities (FAR)The FAR of car = 52
This means for every one hour there is risk of 52 people dying by car accident.
The FAR of rock climbing = 3400
This means that for every one hour there is risk of 3400 dying by car accident.
If FAR for 1 hour = 52
X hours = 3400
Make X the subject of formula,
X hours = 3400/52
= 65 hours approximately
Therefore, the number of hours that must be travelled by car to make the risks of fatality by car equal to the risk of fatality by rock climbing is = 65 hours.
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How do electrical field lines indicate the strength of an electric field?.
Answer:
The amount of lines that are perpendicualr to the area and are closer together.
Explanation:
Imagine a ripple of water. closer to the source of ripple the rings are closer together. The further away from the ripple the rings spread out and there is more time inbetween each ripple. Same wit an electric field. The more lines closer together means the stronger the field. The furth the lines are form each other mean a less strong field.
Conduct online research and write a short report on the origin and evolution of the meter as a measurement standard. Discuss how the meter formed a base for the development of other measuring standards.
Answer:
People have come up with all sorts of inventive ways of measuring length. The most intuitive are right at our fingertips. That is, they are based upon the human body: the foot, the hand, the fingers or the length of an arm or a stride.
In ancient Mesopotamia and Egypt, one of the first standard measures of length used was the cubit. In Egypt, the royal cubit, which was used to build the most important structures, was based on the length of the pharaoh’s arm from elbow to the end of the middle finger plus the span of his hand. Because of its great importance, the royal cubit was standardized using rods made from granite. These granite cubits were further subdivided into shorter lengths reminiscent of centimeters and millimeters.
piece of black rock with white Egyptian markings
Fragment of a Cubit Measuring Rod
Credit: Gift of Dr. and Mrs. Thomas H. Foulds, 1925
Later length measurements used by the Romans (who had taken them from the Greeks, who had taken them from the Babylonians and Egyptians) and passed on into Europe generally were based on the length of the human foot or walking and multiples and subdivisions of that. For example, the pace—one left step plus one right step—is approximately a meter or yard. (On the other hand, the yard did not derive from a pace but from, among other things, the length of King Henry I of England’s outstretched arm.) Mille passus in Latin, or 1,000 paces, is where the English word “mile” comes from.
And thus, the meter has and likely will remain so elegantly defined in these terms for the foreseeable future.
Explanation:
is this short enough
The formation of frost on an airplane wing will cause A. a change in the basic aerodynamic shape if the wing. B. a disruption in the smooth airflow over the wing. C. the airplane to become airborne at a slower speed.
The formation of frost on an airplane wing will cause disruption in the smooth airflow over the wing.
What is the formation of frost about?In Frost formation, it does not alter the basic aerodynamic shape of the wing, but the roughness of its surface leads to the smooth flow of air, and it is one that will lead to an increase in drag and an early airflow separation over the wing, leading to a loss of lift.
Therefore, The formation of frost on an airplane wing will cause disruption in the smooth airflow over the wing.
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how does error detection take place
Answer: To detect and correct errors, additional bits are added to the data bits at the time of transmission. The additional bits are called parity bits. They allow detection or correction of errors. The data bits along with the parity bits form a code word.
Explanation:
a 230v shunt motor delivers 30hp at the shaft at 1120rpm. if the motor has an efficiency of 87% at this load, determine: the total input power the line current
Shunt motors are direct current motors that have parallel windings with identical voltage. The total input power of the shunt motor is 25.724 kW and the line current will be 111.843 A.
What are input power and line current?Total input power is the ratio of the output power and the efficiency, while the line current is the proportion of input power to an input voltage.
The total input power (total IP) is calculated as:
Given,
Output power (OP) = 30 hp
Efficiency = 0.87
Substituting values:
[tex]\begin{aligned}\text{Total IP} &= \rm \dfrac {OP}{efficiency}\\\\&= \dfrac {30 \times 746 \rm \;watts}{0.87}\\\\&= 25.724 \;\rm kW \end {aligned}[/tex]
Line current is calculated as:
Given,
Input power (IP) = 25.724 kW
Input voltage (IV) = 230 Volt
Solving for line current:
[tex]\begin{aligned} \text{Line current} &= \rm \dfrac{IP}{IV}\\\\&= \dfrac{25.724 \times 10^{3}}{230}\\\\&= 111.843 \;\rm A \end{aligned}[/tex]
Therefore, the total input power of the shunt is 25.724 kW, and the line current is 111.843 A.
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The average repair cost of a microwave oven is 55$, with a standard deviation of 8$. the costs are normally distributed. If 12 ovens are repaired, find the probability that the mean of the repair bills will be greater than 60$.
The probability that the mean of the repair bills for 12 microwave ovens will be greater than $60 is 0.015 or about 1.5%.
What is Probability?The distribution of the sample means for repair costs of 12 microwave ovens can be approximated to a normal distribution, with a mean of the population repair cost, μ = $55 and a standard deviation of the sample mean, σ/√n = $8/√12 ≈ $2.31.
We need to find the probability that the sample mean is greater than $60. Using the formula for z-score:
z = (x - μ) / (σ / √n)
= (60 - 55) / (2.31)
≈ 2.16
We can look up the area under the standard normal distribution curve for z-score 2.16 in a z-table or calculate it using software. The probability is approximately 0.015.
Therefore, the probability that the mean of the repair bills for 12 microwave ovens will be greater than $60 is 0.015 or about 1.5%.
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Nisha has been a journalist all her life, mostly covering space missions and news, but has recently had twins and is looking for a career change. For this season of life, she’s more interested in working with other people’s writings and getting them in front of readers. Which career path might be a good fit for Nisha right now?
data science
space law
software engineering
space publishing
The center of gravity method considers a greater number of location factors than the break-even analysis. True False
The center of gravity method considers a greater number of location factors than the break-even analysis: B. False.
What is the break-even analysis?
Break-even analysis is also referred to as cost-volume-profit analysis and it can be defined as a financial accounting technique that is used to determine the number of units (products) which a business firm must sell at a specific price, either on a monthly or annual basis, so as to cover all of its costs.
Unlike the center of gravity method, the break-even analysis considers a greater number of location factors to determine the number of units (products) which a business firm must sell at a specific price.
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A strong thunderstorm just knocked out the power of the entire space center. Who should the team contact to make sure their equipment is still in working order?
the Mission Control Center
CAPCOM
Ground Control
the Flight Director
The flight director manages the flight controllers who work in the Mission Control Center. Flight director make sures the International Space Station is operated safely or not. He leads the planning and coordination of all activities. He approves any procedures to protect the space station and crew. Thus the correct option is D.
What is the function of ground control team?The GC team is responsible for the ground systems infrastructure and ground communications necessary to perform planning, training, testing, execution and evaluation of human spaceflight mission operations.
Capcoms represent both the technical control team on the ground and astronauts in orbit.
A mission control center is a facility that manages space flights, usually from the point of launch until landing or the end of the mission. It is part of the ground segment of spacecraft operations.
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Your company bought a foundry and decided to make I-beams for the construction industry. You look at the foundry's continuous caster and realize that it doesn't produce an I.
am shape. Your supervisor would like to know which joining and molding method the company should use for making I-beams. You recommend what?
I have 5 apples and i ate 4. how many apple i have?
Answer:
I think you have 5 apples because I don’t think you said you even had any.
Explanation:
I think you would have 5 left.
analysis of structure
what are the elements of parallel computing
Elements of Parallel Computing:-
Computer systems organization. Dependable and fault-tolerant systems and networks.
Computing methodologies. Parallel computing methodologies. ...
General and reference. Cross-computing tools and techniques. ...
Networks. Network performance evaluation.
Software and its engineering. ...
Theory of computation.
The end of a cylindrical liquid cryogenic propellant tank in free space is to be protected from external (solar) radiation by placing a thin metallic shield in front of the tank. Assume the view factor Fts between the tank and the shield is unity; all surfaces are diffuse and gray, and the surroundings are at 0 K. It is given that Tt= 100 K, ε1=ε2= 0. 10, εt= 0. 20, and GS= 1250 W/m2.
If the temperature of the shield is 338 kelvin. Then the heat flux through the tank will be 25.3 Watt per square meter.
What is heat flux?The increase in heat energy movement through a particular surface is known as heat flux, and the heat flux density is the absolute temperature per unit area.
Assume the view factor between the tank and the shield is unity; all surfaces are diffuse and gray, and the surroundings are at 0 K.
It is given that T= 100 K, ε₁ = ε₂ = 0. 10, [tex]\varepsilon_t[/tex] = 0.20, and GS= 1250 W/m².
Then we have
The temperature of the shield will be
[tex]\rm \alpha _sG_s - \varepsilon _1 E_b (T_s) - \dot{q}_{ST} = 0[/tex] ...1
and
[tex]\rm q''_{12}=\dfrac{ \sigma (T_{1}^{4} - T_{2}^{2})}{\frac{1}{\varepsilon _1 }+ \frac{1}{\varepsilon _2} -1}}[/tex] ...2
Then from equations 1 and 2, we have
[tex]\rm \alpha _sG_s - \varepsilon _1 E_b (T_s) - \dfrac{ \sigma (T_{1}^{4} - T_{2}^{2})}{\frac{1}{\varepsilon _1 }+ \frac{1}{\varepsilon _2} -1}} = 0[/tex]
Then the value of [tex]\rm T_s[/tex] will be
[tex]\rm T_s =\left [ \dfrac{\alpha _sGs+\left ( \dfrac{\sigma T_1^4}{\frac{1}{\varepsilon _1}+\frac{1}{\varepsilon _2} - 1} \right )}{\sigma \left ( \varepsilon _1 + \dfrac{1}{\frac{1}{\varepsilon _1} + \frac{1}{\varepsilon _2}-1} \right )} \right ] ^{\dfrac{1}{4}}[/tex]
Put all the values, then we have
[tex]\rm T_s = \left [ \dfrac{0.05 \times + \left ( \dfrac{\sigma (100)^4}{\frac{1}{0.1}+\frac{1}{0.05}-1} \right )}{\sigma \left ( 0.05 + \dfrac{1}{\frac{1}{0.1}+\frac{1}{0.05} - 1} \right )} \right ]^{\dfrac{1}{4}} \\\\\\T_s = 338 \ K[/tex]
Then the heat flux will be
[tex]\rm q"_{ST}=\dfrac{\sigma (T_S^4 - T_t^4)}{\frac{1}{\varepsilon _1} + \frac{1}{\varepsilon _2} - 1} \\\\\\q"_{ST}=\dfrac{5.67 \times 10^{-8}(388^4-100^4)}{\frac{1}{0.1}+\frac{1}{0.05}-1}\\\\\\q"_{ST} = 25.3 \ W/m^2[/tex]
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determine the components of each reaction at the ball and socket joint A and the tension in each cable necessary for equilibrium of the rod
The components of the reaction force in a ball and socket joint include the horizontal and vertical reaction forces.
What is a reaction force?A reaction force is an equal but oppositely directed force which forms a pair which the applied or action force.
Tension is a type of force which is present in a string or a rope supporting a body or object.
A ball and socket jont is a type of joint in the body which is able to rotate freely about an axis.
The components of the reaction force in a ball and socket joint include the horizontal and vertical reaction forces.
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please within 40 min.could anyone help me?
Answer:
first one is (a) next is (b)
Explanation:
As shown in Fig. 1, the Cauchy stress tensor of a plane stress state at a material point is given as
(image below)
1. Draw its Mohr’s circle;
2. Find all the principal stresses and maximum and minimum shear stresses;
3. The corresponding θp and θs;
4. Use the method of pole to draw the element in the physical space in the principal directions and in the maximum/minimum shear stress directions.
What characteristic may make you likely to pursue a career in data science?
You are able to talk comfortably to anyone in a room, even if you have never met them.
You are motivated to. create databases to house disparate pieces of information.
You are a seasoned air traffic controller with more than 10 years of experience.
You prefer to present your ideas visually with charts, graphs, and reports.
You are motivated to create databases to house disparate pieces of information. Thus the correct option is B.
What is data science?
Data science is the field of study which combines domain expertise, programming skills, and knowledge of mathematics and statistics to extract meaningful insights from data.
The continually increasing access to data is possible due to advancements in technology and collection techniques. Individuals buying patterns and behavior can be monitored and predictions made based on the information gathered in data science.
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A Hartnell governor has two rotating balls, of mass 2.7 kg each. The ball radius is 125 mm in the mean position when the
ball arms are vertical and the speed is 150 r.p.m. with the sleeve rising. The length of the ball arms is 140 mm and the
length of the sleeve arms 90 mm. The stiffness of the spring is 7 kN/m and the total sleeve movement is 12 mm from the
mean position. Allowing for a constant friction force of 14 N acting at the sleeve, determine the speed range of the
governor in the lowest and highest sleeve positions. Neglect the obliquity of the ball arms
Answer:
A Hartnell governor has two rotating balls, of mass 2.7 kg each. The ball radius is 125 mm in the mean position when the
ball arms are vertical and the speed is 150 r.p.m. with the sleeve rising. The length of the ball arms is 140 mm and the
length of the sleeve arms 90 mm. The stiffness of the spring is 7 kN/m and the total sleeve movement is 12 mm from the
mean position. Allowing for a constant friction force of 14 N acting at the sleeve, determine the speed range of the
governor in the lowest and highest sleeve positions. Neglect the obliquity of the ball arms
Explanation:
which kind of the crystal structure has the feweest slip direction and therefore the metals with this structures are the generally more difficult to deform at room temperature ?
Answer:
HCP
Extra -> BCC the most, FCC between
Explanation:
A cat is fed a diet designed for dogs. Which amino acid is most likely to be deficient in this cat's diet?
Answer:
Your cat may also be a risk of a taurine deficiency if he or she enjoys sampling your dog's food. Dog food doesn't contain taurine, as dogs can create their own supply of the amino acid. Although your cat may like the taste, a steady diet of dog food is a bad idea
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A small county board is composed of three commissioners. Each commissioner votes on measures presented to the board by pressing a button indicating whether the commissioner votes for or against a measure. If two or more commissioners vote for a measure, it passes. Design a logic circuit that takes the three votes as inputs and lights either a green or a red light to indicate whether a measure passed.
The common sense circuit. noun. a digital circuit utilized in computer systems to carry out a logical operation on its or extra enter signals. There are six simple circuits, the AND, NOT, NAND, OR, NOR, and unique OR circuits, which may be blended into extra complicated circuits.
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What characteristic may make you likely to pursue a career in space publishing?
You love creating, running, and troubleshooting new algorithms and exploring the patterns that the algorithms discover.
You enjoy both the subject matter of space science but also the research around the audience that reads this work and what topics will interest them.
You have strong opinions about where a country’s airspace ends and outer space begins, and are comfortable defending your views.
You have studied ways to improve user interface design with respect to NASA’s most current technologies.
To pursue a career in space publishing the interest in the subject and the research about the interesting topics is most likely the reason a person can choose this option. Thus, option B is accurate.
What is space publishing?Space publishing is a career option that involves the space sciences and education that are brought together to make the content and texts that are related to the space.
It can be a good option for a professional career if the person is interested in learning and exploring the space sciences and will like to work in this field to enlighten the audience.
Therefore, option B. interest in space science will be the best reason to pursue a career in space publishing.
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A solid line and a broken line painted on the center of a two-lane highway means passing is.
Answer:
not allowed when the solid line is on your side
Explanation:
Optimum engine oil pressure at operating temperature and moderate engine load should be __________ ps
Answer:
What Is Normal Oil Pressure Temperature? Oil temperatures typically range from 200 degrees to 200 degrees Fahrenheit, depending on the weather. The oil pressure ranges from 100psi to 10-15psi depending on the weather at start up.
Explanation: