False, There are instances when flashing green lights other than traffic signals are employed to alert drivers of impending stop signs, railroad crossings, signal lights, pedestrian crossings, school zones,
Robots are signalling devices used at road junctions, pedestrian crossings, and other sites to manage traffic flows. Traffic lights, traffic signals, or stoplights are also known as these terms in South Africa.
Traffic lights typically include three signals, which convey important information to cars and cyclists through the use of colours and symbols like arrows and bicycles. The standard traffic light colours are vertically or horizontally organised red, yellow, and green. Although this is a worldwide standard, there are differences in traffic signal legislation and sequences on a national and municipal level.
To lessen the need for police personnel to regulate traffic, the technique was initially used in December 1868 on Parliament Square in London.
Electricity and computerised control have enhanced traffic light technology since then.
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a 1-w, 350-ω resistor is connected to 24 v. Is this resistor operating within its power rating?
Answer:
No.
Explanation:
\(P_r\) = Power rating = 1 W
R = Resistance = \(350\ \Omega\)
V = Voltage = \(24\ \text{V}\)
Power is given by
\(P=\dfrac{V^2}{R}\\\Rightarrow P=\dfrac{24^2}{350}\\\Rightarrow P=1.65\ \text{W}\)
\(1.65\ \text{W}>1\ \text{W}\)
So
\(P>P_r\)
Hence, the resistor is not operating within its power rating.
Questions: 1. How can this motherboard support 8 GB of RAM with only fout 2. CHAPT Memory What memory features, if any, are used? (Select a ply) I parity non-parity IECCI registered fully bulleredbultered I SVD What memory modules are needed the customer was 3 of dualche RAM ties and how many of each capacity are required) 3. What memory slots will be used to install the memory, based on the information provided 5. Using the Internet, a computer parts magazine, or a list of memory modules, determine the cast per numbers and quantities of memory modules you would buy. List them, along with the location when you obtained the information. 6. Will it matter if the motherboard has tin contacts in the memory slots? Why or why not? 7. Can DDR memory modules be used with this motherboard? How can you tell? 8. If this motherboard already has 1 GB of RAM installed in the DIMMO_ChanA slot and the customer would like to upgrade to 2 GB of dual-channel RAM, what memory modules are needed? (What ca pacities and how many of each capacity are required) . What suggestions, if any, would you make to the customer before researching prices? 0. What memory slots will be used to install the memory, based on the information provided? Using the Internet, a computer parts magazine, or a list of memory modules, determine the exact part numbers and quantities of memory modules that you would buy. List them, along with the location where you obtained the information. To be able to determine the correct amount and type of memory to imalna Refer to Figure 6.24 and Table 6.11 to answer the questions. This motherboard The desktop board supports either single-ordual-channel memory configuration. The board has four 240-pin DDR2 SDRAM DIMM connectors with gold-plated con provides support for unbuffered, non-registered single or double-sided Most Install a matched pair of DIMMs equal in speed and size in Follow the directions for two DIMMs and add another matched Install a matched pair of DIMMs equal in speed and size in and DIMM1 of Channel A. Install a DIMM equal in speed and total size of the DIMMs installed in Channel A in either DOM All other memory configurations result in single-channel menu Exercise 6.2 Configuring Memory on Paper Objective: Parts: Internet access or access to magazines or ads that show memory prices Procedure: the following memory configurations • Up to 2 GB utilizing 256 MB technology • Up to 4 GB utilizing 512 MB or 1 GB technology • Up to 8GB utilizing 1 GB technology DDR2 533/667/800 MHz memory, and (SPD) memory only. Motherboard with four memory slots DIMMO_Chana DIMM1_Chana DIMMO ChanB DIMM1_ChanB FIGURE 6.24 Motherboard with four memory slots and two channels TABLE 6.11 Motherboard single-/dual-channel guidelines Installed memory Guidelines 2 DIMMs dual-channel of both Channel A and Channel B. 4 DIMMs dual-channel of DIMMs in DIMM1 of both Channels A and B. 3 DIMMs dual-channel DIMM1 of Channel B. Single-channel operation.
1. The memory support capacity of the motherboard can be determined by the capacity of each individual RAM slot on the motherboard. In this case, the motherboard has four 240-pin DDR2 SDRAM DIMM connectors, which can accommodate up to 8GB of RAM. This means that each RAM slot can support up to 2GB of memory.
2. The memory features used in this motherboard are unbuffered, non-registered single or double-sided DDR2 533/667/800 MHz memory, and (SPD) memory only. The motherboard supports parity, non-parity, ECC, registered, and fully buffered memory.
3. The customer needs 3 dual-channel RAM kits, and each kit should consist of a matched pair of DIMMs equal in speed and size. Therefore, the customer needs a total of 6 DIMMs.
4. Based on the information provided, the memory slots that will be used to install the memory are DIMM0 and DIMM1 of Channel A, and DIMM0 and DIMM1 of Channel B.
5. The cost, part numbers, and quantities of the memory modules depend on the customer's requirements and budget. The information can be obtained from computer parts magazines or online stores that sell memory modules.
6. Tin contacts in the memory slots can cause connectivity issues and affect the performance of the memory modules. Therefore, it is important to ensure that the memory modules have proper connectivity with the motherboard.
7. Yes, DDR memory modules can be used with this motherboard. The motherboard supports DDR2 SDRAM memory, which is backward compatible with DDR SDRAM memory.
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What happens if the TEV bulb loses its charge?
Answer:
When a loss of charge exists, There is not a sufficient force to throttle the value open to it's correct position.
Water at 15degree Celsius passes through 2cm internal diameter copper tubes at a rate of
0.55kg/s. Determine the pumping power per meter of pipe length required to maintain this flow
at the specified rate.
Answer :
Im not really sure tbh
Explanation: Water at 15°C is heated by passing it through 2-cm internal-diameter thin-walled copper tubes. Heat is supplied to the water by steam that condenses outside the copper tubes at 120°C. If water is to be heated to 65°C at a rate of 0.2 kg/s, determine (a) the length of the copper tube that needs to be used and (b) the pumping power requirement to overcome pressure losses. Assuming the entire copper tube to be at steam temperature of 120°C
what is the condition for sampling frequency to reconstruct the information signal ?
In 2009 an explosive eruption covered the island of Hunga Ha'apai in black volcanic ash. What type of succession is this?
Answer:
The type of succession is:
Primary succession
Explanation:
This is a type of succession that occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient rich soils.
Primary succession is one of the two types of succession we have. It begins on rock formations, such as volcanoes or mountains, or in a place with no organisms or soil.
Variation in the number and types of molecules within cells provides organisms a greater ability to survive and or reproduce in different environments.
Organisms have the capacity to react to a wide range of environmental stimuli thanks to molecular variation.
How does an organism's ability to live and reproduce in various circumstances depend on the types of molecules that make up its cells?Organisms have the capacity to react to a wide range of environmental stimuli thanks to molecular variation. Organisms are better able to live and/or reproduce in a variety of situations due to variation in the amount and types of molecules that make up cells.
The amount and types of molecules that make up cells vary, which gives organisms a better chance of surviving and/or procreating in various situations.
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question-
Explain the connection between variation in the number and the types of molecules within cells to the ability of the organism to survive and/or reproduce in different environments.
in fort a shied pot is 50
FILL IN THE BLANK. when looking over the suspension system you need to check for cracked loose or______
When looking over the suspension system you need to check for cracked loose or broken spring hangers, damaged torque rods, damaged u-bolts.
What is the suspension system?When looking over the suspension system of a vehicle, it is important to check for any signs of wear or damage, such as cracked, loose, or damaged parts. The suspension system is responsible for supporting the weight of the vehicle, maintaining tire contact with the road, and providing a smooth ride.
Therefore, Any damage to the suspension system can affect the handling, stability, and safety of the vehicle, so it's important to address any issues as soon as possible. Regular inspection and maintenance of the suspension system can help identify potential problems before they become more serious.
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While social capital can depreciate over time, just like traditional forms of capital, social capital can also increase in value over time.Group of answer choicesTrueFalse
The correct answer is True. Social capital refers to the value embedded in social networks, relationships, and community institutions, and it can increase or decrease over time.
Just like traditional forms of capital, social capital can depreciate over time due to factors such as neglect, mistrust, and disengagement. However, social capital can also appreciate over time through intentional efforts to build trust, foster collaboration, and promote shared values and norms within a community or network. For example, investing in activities that strengthen social ties, such as volunteering, participating in community events, and building personal relationships with colleagues and acquaintances, can increase social capital. These activities can create opportunities for individuals to exchange information, resources, and social support, which can, in turn, enhance the overall productivity, resilience, and well-being of the community or network. Overall, the value of social capital depends on the quality and strength of the relationships within a network or community, and intentional efforts to build and maintain these relationships can lead to increased social capital over time.
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a technician is being asked to move a heavy industrial printer. which safety technique is recommended for this situation?
The safety technique that is recommended for this situation of moving a heavy industrial printer is to Bend at the knees when lifting.
What is a Safety Procedure?This refers to the process of executing a task in a safe and acceptable way that does not put the user or others at risk
Hence, we can see that The safety technique that is recommended for this situation of moving a heavy industrial printer is to Bend at the knees when lifting.
This is to ensure that the person doing the lifting does not injure himself and has the proper form when lifting.
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How do I type my questions?
Answer:
just type it on a computer or a laptop
Which of the following occupations is the most physically dangerous?
O electrician
O Ironworker
O boilermaker
O cement mason
Answer:Ironworker
Explanation:
Their work is totally physical and lead they get hampered by lead most
Answer:
answer:ironworker
Explanation:
they can be hampered and can also get severely injured.
Discuss any three determinants of demand for ocean transport as a mode of
transport.
(Note: One mark for the determinant and three marks for the explanation)
Price of transportation, availability of shipping routes, and seasonal demand are three determinants of demand for ocean transport.
The price of transportation: The price of transportation is one of the most important determinants of demand for ocean transport. If the price of shipping goods by sea is cheaper than other modes of transport such as air and road, then there will be a higher demand for ocean transport.Availability of shipping routes: The availability of shipping routes is another important determinant of demand for ocean transport. If there are more shipping routes available, then there will be a higher demand for ocean transport.Seasonal demand: Seasonal demand is another determinant of demand for ocean transport. If there is a high demand for goods during certain seasons, such as the holiday season, then there will be a higher demand for ocean transport during those periods.Overall, these three determinants play a vital role in determining the demand for ocean transport as a mode of transportation.
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Discuss the applications of numerical weather forecasting
A Contractor Has A Job Which Should Be Completed In 100 Days. At Present, He Has 80 Men On The Job And It Is Estimated That They Will Finish The Work In 130 Days. Of The 80 Men, 50 Are Each Paid ₱120.00 A Day, 25 At ₱180.00 A Day, And 5 At ₱250.00 A Day. For Each Day Beyond The Original 100 Days, A Contractor Has To Pay ₱500.00 Liquidated Damages.A) How Many
A contractor has a job which should be completed in 100 days. At present, he has 80 men on the job and it is estimated that they will finish the work in 130 days. Of the 80 men, 50 are each paid ₱120.00 a day, 25 at ₱180.00 a day, and 5 at ₱250.00 a day. For each day beyond the original 100 days, a contractor has to pay ₱500.00 liquidated damages.
a) How many more men should the contactor add so that he would complete the work on time?
b) If of the additional men, 2 are paid ₱180.00 a day, and the rest at ₱120.00 a day, would the contractor save money by employing more men and not paying the fine?
A contractor has a job that should be completed in 100 days. At present, he has 80 men on the job and it is estimated that they will finish the work in 130 days. Of the 80 men, 50 are each paid ₱120.00 a day, 25 at ₱180.00 a day, and 5 at ₱250.00 a day. For each day beyond the original 100 days, a contractor has to pay ₱500.00.
liquidated damages.(a) How many more men should the contractor add so that he would complete the work on time?In the first case, we see that the contractor already has 80 men and they are working for 130 days to complete the job. So, we can use the following formula to determine the additional number of workers required to finish the work in 100 days.
b) If of the additional men, 2 are paid ₱180.00 a day, and the rest at ₱120.00 a day, would the contractor save money by employing more men and not paying the fine Let’s assume that the contractor adds 440 workers, of which 2 are paid ₱180.00 a day and the rest are paid ₱120.00 a day.
The total cost of the new workers is, therefore, ₱9600.00 + ₱4500.00 + ₱49800.00 = ₱63,900.00.The cost of liquidated damages would be calculated as follows: $$LD = (130-100) \cdot 500 = ₱15,000.00$$.
Therefore, the contractor would save money if he employs more men and not pays the fine. The contractor’s savings would be:$$Savings = LD - Additional cost$$$$= 15000.00 - 63900.00 $$$$= -48900.00$$
Thus, we can see that the contractor would save ₱48,900.00 by employing more men and not paying the fine.
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does anyone know how i can make my LED lights be sticky again? they keep falling :/
Which of the following is an example of a tax
Answer:
A tax is a monetary payment without the right to individual consideration, which a public law imposes on all taxable persons - including both natural and legal persons - in order to generate income. This means that taxes are public-law levies that everyone must pay to cover general financial needs who meet the criteria of tax liability, whereby the generation of income should at least be an auxiliary purpose. Taxes are usually the main source of income of a modern state. Due to the financial implications for all citizens and the complex tax legislation, taxes and other charges are an ongoing political and social issue.
I dont know I asked this to
Explanation:
Hammer welding preceded resistance welding
True
False
Answer:false
Explanation:
Bc
an action potential usually goes only in one direction in an axon because:
An action potential usually goes only in one direction in an axon because of the presence of refractory periods. During an action potential, sodium ions enter the axon, causing depolarization and the opening of voltage-gated potassium channels.
This leads to repolarization, where potassium ions exit the axon, causing hyperpolarization and a refractory period. The refractory period ensures that the axon cannot be stimulated again until it has returned to its resting state, preventing the action potential from moving backwards. Additionally, the axon has a higher density of sodium channels at the beginning of the axon, which facilitates the initiation of the action potential and further prevents it from moving in the opposite direction. Therefore, the combination of refractory periods and the differential distribution of sodium channels allows the action potential to travel only in one direction along the axon.
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What is a kind of useful car?
La probabilidad de que un nuevo producto tenga éxito es de 0.85. Si se eligen 10 personas al azar y se les pregunta si comprarían el nuevo producto, ¿cuál es la probabilidad de que por lo menos 8 adquieran el nuevo producto?
Answer:
La probabilidad pedida es \(0.820196\)
Explanation:
Sabemos que la probabilidad de que un nuevo producto tenga éxito es de 0.85. Sabemos también que se eligen 10 personas al azar y se les pregunta si comprarían el nuevo producto. Para responder a la pregunta, primero definiremos la siguiente variable aleatoria :
\(X:\) '' Número de personas que adquirirán el nuevo producto de 10 personas a las que se les preguntó ''
Ahora bien, si suponemos que la probabilidad de que el nuevo producto tenga éxito se mantiene constante \((p=0.85)\) y además suponemos que hay independencia entre cada una de las personas al azar a las que se les preguntó ⇒ Podemos modelar a \(X\) como una variable aleatoria Binomial. Esto se escribe :
\(X\) ~ \(Bi(n,p)\) en donde \(''n''\) es el número de personas entrevistadas y \(''p''\) es la probabilidad de éxito (una persona adquiriendo el producto) en cada caso.
Utilizando los datos ⇒ \(X\) ~ \(Bi(10,0.85)\)
La función de probabilidad de la variable aleatoria binomial es :
\(p_{X}(x)=P(X=x)=\left(\begin{array}{c}n&x\end{array}\right)p^{x}(1-p)^{n-x}\) con \(x=0,1,2,...,n\)
Si reemplazamos los datos de la pregunta en la función de probabilidad obtenemos :
\(P(X=x)=\left(\begin{array}{c}10&x\end{array}\right)(0.85)^{x}(0.15)^{10-x}\) con \(x=0,1,2,...,10\)
Nos piden la probabilidad de que por lo menos 8 personas adquieran el nuevo producto, esto es :
\(P(X\geq 8)=P(X=8)+P(X=9)+P(X=10)\)
Calculando \(P(X=8), P(X=9)\) y \(P(X=10)\) por separado y sumando, obtenemos que \(P(X\geq 8)=0.820196\)
Por definición de variable aleatoria binomial, la probabilidad de que por lo menos 8 adquieran el nuevo producto es 0.8202.
En primer lugar, debes saber que la Probabilidad es la mayor o menor posibilidad de que ocurra un determinado suceso.
En otras palabras, la probabilidad establece una relación entre el número de sucesos favorables y el número total de sucesos posibles.
Por otro lado, una variable aleatoria es una función que asocia un número real, perfectamente definido, a cada punto muestral.
Una variable aleatoria es discreta si los números a los que da lugar son números enteros.
Finalmente, una distribución binomial es una distribución de probabilidad discreta que describe el número de éxitos al realizar n experimentos independientes entre sí, acerca de una variable aleatoria.
La expresión para calcular la distribución binomial es:
P(X=x)=( \(n\\ x\) ) pˣ qⁿ⁻ˣ
Donde:
n = Número de ensayos/experimentos x = Número de éxitos p = Probabilidad de éxito q = Probabilidad de fracaso (1-p)Recordar que:
( \(n\\ x\) )= \(\frac{n!}{x!(n-x)!}\)
donde el signo de exclamación representa el símbolo de factorial, es decir el producto de todos los números enteros positivos desde 1 hasta n.
En este caso, sabes que la probabilidad de que un nuevo producto tenga éxito es de 0.85 y se eligen 10 personas al azar. Entonces se define la siguiente variable aleatoria:
X= '' Número de personas que adquirirán el nuevo producto de 10 personas a las que se les preguntó ''
Suponiendo que hay independencia entre cada una de las personas al azar a las que se les preguntó, es posible usar una variable aleatoria Binomial. Siendo n el número de personas entrevistadas (en este caso, 10 personas) y p la probabilidad de éxito (una persona adquiriendo el producto, en este caso 0.85) en cada caso, la expresión a utilizar queda expresada como:
P(X=x)=( \(10\\ x\) ) 0.85ˣ (1-0.85)¹⁰⁻ˣ
P(X=x)= \(\frac{10!}{x!(10-x)!}\) 0.85ˣ (0.15)¹⁰⁻ˣ
Se desea calcular la probabilidad de que por lo menos 8 adquieran el nuevo producto. Siendo 10 las personas elegidas al azar, puede ser que sean 8,9 o 10 las personas que adquieran un nuevo producto. Entonces la probabilidad deseada es calculada como:
\(P(X\geq 8)= P(X=8) + P(X=9) + (P=10)\)
Entonces:
\(P(X\geq 8)=\) \(\frac{10!}{8!(10-8)!}\) 0.85⁸ (0.15)¹⁰⁻⁸ + \(\frac{10!}{9!(10-9)!}\) 0.85⁹ (0.15)¹⁰⁻⁹ + \(\frac{10!}{10!(10-10)!}\) 0.85¹⁰ (0.15)¹⁰⁻¹⁰
Resolviendo:
\(P(X\geq 8)=\) \(\frac{10!}{8!2!}\) 0.85⁸ (0.15)² + \(\frac{10!}{9!1!}\) 0.85⁹ (0.15)¹ + \(\frac{10!}{10!0!}\) 0.85¹⁰ (0.15)⁰
\(P(X\geq 8)=\) 45×0.85⁸×(0.15)² + 10×0.85⁹×(0.15)¹ + 1×0.85¹⁰×(0.15)⁰
\(P(X\geq 8)=\) 0.2759 + 0.3474 + 0.1969
\(P(X\geq 8)=\) 0.8202
Finalmente, la probabilidad de que por lo menos 8 adquieran el nuevo producto es 0.8202.
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The statement "Size dimensions on a drawing control the tolerance on 90° angles" is False. Size dimensions on a drawing typically control the dimensions and tolerances of the individual features such as lengths, diameters, and distances, but they do not directly control the tolerance on angles.
In engineering drawings, size dimensions are used to specify the dimensions and tolerances of various features on a part. These size dimensions define the allowable range of variations for the linear dimensions, such as lengths and diameters. They help ensure that the manufactured part falls within the acceptable range of sizes. However, when it comes to angles, the tolerance is usually controlled by angular dimensions or geometric tolerancing symbols rather than size dimensions. Angular dimensions specify the desired angle, while geometric tolerancing symbols, such as the perpendicularity symbol, control the tolerance on 90° angles or other specific angles. Therefore, while size dimensions play an important role in controlling linear dimensions and tolerances, they do not directly control the tolerance on angles such as 90° angles. Angle dimensions and geometric tolerancing symbols are used specifically for that purpose.
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Polymorphism is when ____ in a class hierarchy perform differently, depending upon which object performs the call.
a. base class constructors
b. derived class constructors
c. member functions
d. derived class destructors
e. None of these
Answer:
(c) member function
Explanation:
Polymorphism is when member functions in a class hierarchy perform differently, depending upon which object performs the call.
Polymorphism refers to the ability of different objects to respond to the same method call in different ways. In a class hierarchy, member functions (also known as methods) are defined in the base class and can be overridden or re-implemented in derived classes. When an object of a derived class is created, it can override the implementation of a method defined in the base class and provide its own version of that method.
For example, consider a class hierarchy in which the base class is "Shape" and there are derived classes called "Circle" and "Rectangle." The "Shape" class may define a method called "area()" that calculates the area of the shape. The "Circle" class may override the "area()" method and provide its own implementation that calculates the area of a circle using the radius of the circle, while the "Rectangle" class may override the "area()" method and provide its own implementation that calculates the area of a rectangle using its length and width.
When a method is called on an object of the "Circle" class, the object will use the implementation of the "area()" method provided in the "Circle" class to calculate the area. Similarly, when a method is called on an object of the "Rectangle" class, the object will use the implementation of the "area()" method provided in the "Rectangle" class to calculate the area. This is an example of polymorphism, as the same method call is being performed differently depending on the type of object that is performing the call.
In this context, the correct answer is (c) member functions.
True or false
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Answer:
Explanation:
a) True
b) False
c) False
d) False
e) True
f) False
g) False
h)False
Plz mark as brainliest
What is the preferred approach to risk mitigation?
-Tolerate
-Transfer
-Terminate
-Treat
Answer:
The correct option is;
Terminate
Explanation:
Termination of the risk is equivalent to elimination of the risk by avoiding the activity that brings about the risk or by using a different process that does not include the risk observed in the previous process option
When the reward far outweigh the risk, it may be decided to terminate or eliminate the risk and miss the reward and also terminate the likelihood of the losses to be incurred.
A compressible fluid flows through a compressor that increases the density from 1 kg/m3 to 5 kg/m3. The cross-sectional area of the inlet pipe is 3 m2 and that of the discharge pipe is 1 m2. The relation between the discharge volume flow rate and the inlet volume flow rate is
Answer:
The relation between the discharge volume flow rate and the inlet volume flow rate is \(\frac{1}{5}\).
Explanation:
No matter if fluid is compressible or not, mass throughout compressor, a device that works at steady state, must be conserved according to Principle of Mass Conservation:
\(\dot m_{in}-\dot m_{out} = 0\) (Eq. 1)
Where \(\dot m_{in}\) and \(\dot m_{out}\) are mass flows at inlet and outlet, measured in kilograms per second.
After applying Dimensional analysis, we expand the equation above as follows:
\(\rho_{in}\cdot \dot V_{in} - \rho_{out}\cdot \dot V_{out} = 0\) (Eq. 2)
Where:
\(\rho_{in}\), \(\rho_{out}\) - Fluid densities at inlet and outlet, measured in kilograms per cubic meter.
\(\dot V_{in}\), \(\dot V_{out}\) - Volume flow rates at inlet and outlet, measured in cubic meters per second.
After some algebraic handling, we find the following relationship:
\(\rho_{out}\cdot \dot V_{out} = \rho_{in}\cdot \dot V_{in}\)
\(\frac{\dot V_{out}}{V_{in}} = \frac{\rho_{in}}{\rho_{out}}\) (Eq. 3)
If we know that \(\rho_{in} = 1\,\frac{kg}{m^{3}}\) and \(\rho_{out} = 5\,\frac{kg}{m^{3}}\), then the relation between the discharge volume flow rate and the inlet volume flow rate is:
\(\frac{\dot V_{out}}{\dot V_{in}} = \frac{1\,\frac{kg}{m^{2}} }{5\,\frac{kg}{m^{3}} }\)
\(\frac{\dot V_{out}}{\dot V_{in}} = \frac{1}{5}\)
The relation between the discharge volume flow rate and the inlet volume flow rate is \(\frac{1}{5}\).
15 kg of ice at 0°C is heated to water of temperature 20°C. What is the amount of heat required if the specific latent heat of ice fusion is 335 kJ/kg and the specific heat capacity of water is 4.19kJ/kg/°C?
Answer:
6282 kJ
Explanation:
Given that:
The mass (m) = 15 kg
The specific latent heat of ice fusion \(h_{fg}_{ice}\) = 335 kJ/kg
The specific heat capacity of water = 4.19 kJ/kg.c
The initial temperature of the ice \(T_i\)= 0° C
The final temperature of the water \(T_f\) = 20° C
To find the needed amount of heat to convert 0° C ice to 20° C of water.
To do that, we need to find the latent heat required for the phase change from 0° C ice to 0° C water, then the heat required to convert 0° C water to 20° C water.
Heat required = \(m \times h_{fg}_{ice}+ m \times c_{water} \times \Delta T\)
Heat required = (15 × 335) + (15 × 4.19) × (20 - 0)
Heat required = 5025 + 62.85 × 20
Heat required = 5025 + 1257
Heat required = 6282 kJ
True or false. flashing arrow panels are only used at night.
The flashing arrow panels are not used just at night but are used even during the day time. These are necessary to give the directional information to the drivers. Thus, the given statement is false.
What are the safety instructions?The safety instructions are necessary for the drivers as absence of these would lead to increased number of accidents which could lead to death of a number of people. The flashing arrow panels is one of these instructions.
Flashing arrow panels are used during the day as well as at the night to give advance warning and directional information to the drivers where it is required to move to the right or to the left into another lane.
Some of the safety systems used at level crossings include amber and red warning lights on majority of roads, people should stop when the amber lights come on, unless vehicle has already crossed the stop line.
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14. The top plate of the bearing partition
I
a. laps the plate of the exterior wall.
b. is a single member.
c. butts the top plate of the exterior wall.
d. is applied after the ceiling joists are
installed.
Answer:
d. is applied after the ceiling joists are
installed.