Answer:
The CdS cell changes the resistance of a circuit depending on the amount of light shining on it.
Explanation:
The most commonly used component in streetlights is called a cadmium sulphide photoresistor, or a CdS cell for short.
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what is the law of physics
10 points if you tell me the answer and your name
[tex]f = force[/tex]
[tex]m = mass \: of \: an \: object[/tex]
[tex]a = acceleration[/tex]
Newton's second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation
Definition of Assessment (ddp question)
Answer:
An assessment is the evaluation or estimation of the nature, quality, or ability of someone or something.
There are two identical oil tanks. The level of oil in Tank A is 12 ft and is drained at the rate of 0.5 ft/min. Tank B contains 8 ft of oil and is drained at the rate of 0.25 ft/min. After how many minutes will the level of oil in the two tanks be the same?
Answer:
16 minutes
Explanation:
This is an example of a class of problems in which two quantities start with different initial values and change at different rates. In such problems, the rates of change are generally ones that cause the values to converge.
The question usually asks when the values will be the same. The generic answer is, "when the difference in rates makes up the difference in initial values."
Here the tanks differ in initial fill height by 12 -8 = 4 ft. The rates of change differ by 0.5 -0.25 = 0.25 ft/min. The more filled tank is draining faster (important), so the fill heights will converge after ...
(4 ft)/(0.25 ft/min) = 16 min
The level in the two tanks will be the same after 16 minutes.
__
Additional comment
The oil levels at that time will be 4 ft.
You can write two equations for height:
y = 12 -0.5x . . . . . . . height in feet after x minutes (tank A)
y = 8 -0.25x . . . . . . height in feet after x minutes (tank B)
These will be equal when ...
y = y
12 -0.5x = 8 -0.25x
4 = 0.25x . . . . . . . . . . add 0.5x -8
16 = x . . . . . . . . . . . . multiply by 4 . . . . time to equal height
The graph shows when the tanks will have equal heights and when they will be drained.
pretend you had to return the files to the client-what would you write in order to support your submitted filest?
In which of the following switching methods, the message is divided into small packets?
None of the these
Virtual switching
Message switching
Packet switching
Answer:
Message packet
Explanation:
The ans is message packet
The correct option is D. Packet switching is a method of switching in which the message is divided into small packets.
The message is broken into smaller pieces when using packet switching. Each of these discrete components of the communication, known as packets, has a unique source and destination address. Only based on these addresses is each packet sent forward through the network.
What is the switching method?The method through which nodes control or switch data to send it between particular places on a network is known as switching. There are three typical switching methods: Switching a circuit. Switching of packets. Switching messages.
Small data packets are sent between different networks using packet switching. These data "packets" or "chunks" enable quicker, more effective data transport. When a user transfers a file over a network, it frequently travels in smaller data packets rather than all at once.
Thus, the correct option is represented by option D. In the packet switching method the message is divided into small packets.
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G A wheel-tractor scraper is operating on a level grade. Assume no power derating is required for equipment condition, altitude, temperature, and so on. Disregarding traction limitations, what is the maximum value of rolling resistance (in pounds per ton) over which a loaded scraper can maintain a speed of 11 mph
The maximum value of rolling resistance over which a loaded scraper can maintain in a speed of 11 mph is 275 lb/ton
What is a maximum rolling resistance?The maximum rolling resistance is the maximum rolling friction that can cause the motion of a body or a substance to resist the force when rolled on a flat surface.
Using Rimpull Performance Chart for wheel-tractor scraper;
For 11 mph speed, the required total resistance is ≅ 25%Grade resistance = 0%The total resistance = (gross+rolling) resistance
25% = 0% - rolling resistance
rolling resistance = 25%
The maximum rolling resistance = rolling resistance percentage × speed
The maximum rolling resistance [tex]\mathbf{=25\% ( \dfrac{11 \ lb/ton}{1 \% \ resistance})}[/tex]
The maximum rolling resistance = 275 lb/ton
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Describe the second case where the power of synthesis was used to solve design problems.
Answer:
The second case where the power of synthesis was used to solve design problems in the sense that they had to create a new office building that saves
Explanation:
The first case where the power of synthesis was applied was in Chile when they had to put 100 families in houses around 40m²
Assess the consequences if not applying to CAO for your studies in advance
Some of the consequences of not applying to Central Applications Office (CAO) in advance include the following:
A payment of 60 Euros (€60) for late online applications.A payment of 90 Euros (€90) for late paper applications.You may miss out on admission to a higher institution.What is CAO?CAO is an abbreviation for Central Applications Office and it can be defined as an academic organization that is saddled with the responsibility of overseeing, managing, and processing undergraduate applications to colleges and universities in the Republic of Ireland.
Historically, the Central Applications Office (CAO) was established in 1976 and its primary mission is to centrally process undergraduate applications to Irish Higher Education Institutions (HEIs) such as colleges and universities, especially in a fair and efficient manner.
Although, it is essential and important for students to submit their applications to the Central Applications Office (CAO) in advance.
In conclusion, some of the consequences of not applying to Central Applications Office (CAO) in advance include the following:
A payment of 60 Euros (€60) for late online applications.A payment of 90 Euros (€90) for late paper applications.You may miss out on admission to a higher institution.Read more on CAO here: https://brainly.com/question/2919700
in fort a shied pot is 50
Write a Nios II assembly program that reads binary data from the Slider Switches, SW11-0, on the DE2-115 Simulator, and display the decimal equivalent on the seven-segment displays HEX3-0.
Algorithm of the Nios II assembly program.
Attain data for simulation from the SW11-0, on the DE2-115 Simulator The data will be read from the switches in loop.The decimal output is displayed using the seven-segment displays and done using the loop.The program is ended by the user operating the SW1 switchand
The decimal equivalent on the seven-segment displays HEX3-0 is
DE2-115DE2-115_SW11DE2-115_HEX3DE2-115_HEX4DE2-115_HEX5DE2-115_HEX6DE2-115_HEX7The Algorithm and decimal equivalent on the seven-segment displays HEX3-0Generally, the program will be written using a cpulator simulator in order to attain best result.
We are to
Attain data for simulation from the SW11-0, on the DE2-115 Simulator The data will be read from the switches in loop.The decimal output is displayed using the seven-segment displays and done using the loop.The program is ended by the user operating the SW1 switchThis will be the Algorithm of the Nios II assembly program .
Hence, the decimal equivalent on the seven-segment displays HEX3-0 is
DE2-115DE2-115_SW11DE2-115_HEX3DE2-115_HEX4DE2-115_HEX5DE2-115_HEX6DE2-115_HEX7For more information on Algorithm
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Tech A says that potentiometer type sensors use a variable resistance to create a variable
voltage signal that corresponds to a specific condition. Tech B says that oxygen sensors are
the potentiometer type. Who is correct?
Tech A is correct because potentiometer type sensors use a variable resistance to create a variable voltage signal that corresponds to a specific condition.
What is a potentiometer?Potentiometer are variable resistors and passive device that can perform basic linear or rotary position function.
The potentiometer is a resistive device that uses voltage divider to produce a variable voltage output signal which is proportional to the physical position as a result of a specific condition.
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An electrician who must know how to disassemble and reassemble magnetic motor starters is an)
residential electrician
commercial electrician
O industrial electrician
o electrical maintenance electrician
The electrician described in the question is called an; D: electrical maintenance electrician
Who is an Electrician?An industrial maintenance/electrician is one who is tasked with the responsibility of installing and maintaining electrical systems in different industries.
Now, in this question we are told that the electrician disassemble and reassemble magnetic motor starters . This type of electricians are usually called Industrial/Electrical Maintenance Electricians.
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three identical lamps A,Band C are connected in series across 150V supply.What is the voltage across each lamp
Answer:
50 V
Explanation:
If A, B, and C are identical, so we assume that all of the lamps have same resistance R. So, the voltage for each lamp is easy to calculate:
[tex]V=3V_{A}\rightarrow 150 = 3V_{A} \rightarrow V_{A}=50[/tex] volts
[tex]V_{A}[/tex] indicates the voltage of each lamp.
Compare and contrast mechanical properties of plastics, metals and ceramics.
Answer:
free badge
Explanation:
PLS HELP ME
Caterpillars eat the milkweed plant. The milkweed plant is a weed that takes over other plants. Based on these two things, are milkweed plants helpful or harmful to the environment?
Helpful
Harmful
Both helpful and harmful
Neither helpful nor harmful ITS Science
Answer:
Both helpful and harmful
Explanation:
The milkweed plant is helpful, because it is the host pant for monarch butterflies and helps provide nectar and pollen for many other pollinators.
It is harmful for many reasons, including it's toxic, poisonous, it produces a type of steroid that is able to stop the heart, and they cause many other sicknesses.
Based on the two things above, milkweed plants are both helpful and harmful to the environment.
It is helpful because the milkweed plants acts as source of food for the caterpillar while it is harmful because it kills other plants around it.
What are Milkweed Plants?This plant is known to belong to the genus of herbaceous plant. It is called Asclepias as it is a perennial, flowering plants.
It is said to derive its name from latex, that is a milky substance that comes out of it when cells are damaged. monarch caterpillars needs to eat milkweed so that they can survive.
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In a series circuit, resistance is the simple _____ of all resistors in the circuit.
A. sum
B. difference
C. average
D. product
A half-wave rectifier circuit with a 1 kΩ load operates from a 120 V (rms value), 60 Hz household supply through a 10-to-1 step-down transformer. (For sine wave, V rms= V pk/√2 .) Assume the diode voltage is 0.7 V at forward bias. (a) What is the peak voltage of the rectified output? (b) For What fraction of the cycle does the diode conduct (calculate the percentage)?
Answer:
(a) 16.27 Vpk
(b) 48.7%
Explanation:
The transformer is assumed to be an ideal 10:1 voltage divider with no internal impedance. The diode is assumed to be modeled in the forward direction by a perfect 0.7 V voltage drop with no internal impedance. That means the frequency of the supply voltage is irrelevant.
__
(a)The peak voltage will be 0.7 V less than the transformer secondary peak voltage:
((120 V)√2)/10 -0.7 V ≈ 16.27 V
__
(b)The fraction of the amplitude for which the diode is non-conducting is ...
0.7/(12√2) ≈ 0.041248
The period of conduction is symmetrical about the peak of the waveform, so it is convenient to use the arccos function to find the (half) conduction angle:
arccos(0.041248) ≈ 87.64°
As a fraction of half the cycle, this is ...
conduction fraction ≈ 87.64°/180° ≈ 48.7%
4. If a hot wire is shorted to ground, what will usually happen?
A. Relay will kick out.
B. Nothing will happen.
C. Fuse will burn open.
D. Capacitor energy storage limit will increase.
Answer:
nothing will happen
Explanation:
except for whatever that wire feeds will lose power
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1. Define the following terms.
a. Composition
b. Synthesis
c. Microstructure
Answer:
composition: the action of putting things together; formation or construction. Alternatively, a creative work, especially a poem or piece of music. Or, in chemistry terms, the chemical composition of engineering material indicates the elements which are combined together to form that material.
synthesis: the combination of components or elements to form a connected whole. Often contrasted with analysis.
microstructure: Microstructure is the very small scale structure of a material, which can be made visible and examined with a microscope.
Explanation:
If you need further explanation, let me know!
1. Compare the following Software, surpac and datamine
Answer:
Discover GEOVIA Surpac, the world´s most popular geology and mine planning software.
logo
Micromine
Intuitive Mining Solutions Micromine 2020: Optimising underground mine planning The launch of MICROMINE’s latest version of leading exploration and 3D mine design solution, Micromine 2020 will see the introduction of new stope optimisation functiona…
Mr. and Ms. Boren have two children, John and Jane. When eating out they will go to a restaurant that serves only hamburgers or one that serves only chicken. Before going out, the family votes to decide on the restaurant. The majority wins, except when Mom and Dad agree, and in that case, they win. Any other tie votes produce a trip to the chicken restaurant.
Required:
Design a logic circuit that will automatically select the restaurant when everyone votes.
Explanation:
The logic is captured in the Karnaugh map of the first attachment. M and D refer to Mom and Dad, respectively, and A and B refer to the children. A logic 1 is a vote for Chicken, 0 is a vote for Hamburger.
The logic in attachment 2 shows an implementation using And and Or gates. The effective equation is ...
chicken = (m·d) + (m+d)·(a+b)
The logic in attachment 3 shows an implementation using an 8-input selector. The dots at the inputs represent inversion, so those inputs to the selector represent a logic 1 (chicken).
Consider filling a cylinder of compressed argon from a high- pressure supply line as shown below. Before filling, the cylinder contains 10 bar of argon at room temperature. The valve is then opened, exposing the tank to a 50 bar line at room temperature un- til the pressure of the cylinder reaches 50 bar. The valve is then closed. For argon take cP = (5/2)R and the molecular weight to be 40 g mol. You may use the ideal gas model. (a) What is the temperature right after the valve is closed? (b) If the cylinder sits in storage for a long time, how much heat is transferred (in kJ/kg)? (c) What is the pressure of the cylinder when it is shipped (after it was stored for a long time)?
The initial pressure in the cylinder of 10 bar of argon with [tex]C_p[/tex] = (5/2)·R
and the added gas at pressure of 50 bar gives the following values.
(a) 400.6 K
(b) 51.184 J
(c) The pressure of the cylinder when it is shipped is 37.194 bar
How can the temperature, heat transferred and pressure be calculated?(a) Adiabatic compression, we have;
[tex]\dfrac{p_{1}}{p_{2}} = \mathbf{\left (\dfrac{T_{_{1}}}{T_{2}} \right )^{\dfrac{k}{k-1}}}[/tex]
Where;
[tex]k = \dfrac{C_p}{C_v} = \mathbf{\dfrac{C_p}{C_p - R}}[/tex]
Therefore;
[tex]K= \mathbf{\dfrac{\frac{5}{2} \cdot R}{\frac{5}{2} \cdot R - R} }= \dfrac{5}{3}[/tex]
Which gives;
[tex]\dfrac{10}{50} = \left (\dfrac{298}{T_{2}} \right )^{\dfrac{\frac{5}{3} }{\frac{5}{3} -1}} = \left (\dfrac{298}{T_{2}} \right )^{2.5}[/tex]
[tex]\dfrac{50}{10} = \mathbf{ \left (\dfrac{T_2}{298.15} \right )^{2.5}}[/tex]
[tex]ln(5)= 2.5\cdot ln\left (\dfrac{T_2}{298.15} \right )[/tex]
[tex]T_2 = 298 \times e^{\dfrac{ln(5)}{2.5} } \approx \mathbf{567.29\, K}[/tex]
The temperature
Using an ideal gas model, we have;
[tex]\dfrac{V_{1}}{V_{2}} = \mathbf{\dfrac{P_{2}\times T_{1}}{T_{2} \times P_1}}[/tex]
Which gives;
[tex]\dfrac{V_{1}}{V_{2}} = \dfrac{50\times 298}{567.29 \times 10} \approx 2.625[/tex]
V₁ = 2.625·V₂
Volume occupied by the gas in the cylinder after the pressure increases is therefore;
[tex]V_2 = \dfrac{V_1}{2.625} \approx 0.381 \cdot V_1[/tex]
Volume of gas added is therefore;
[tex]V =V_1 - \dfrac{V_1}{2.625} = 0.619\cdot V_1[/tex]
Considering a molar volume of gas, we have;
0.040 × 0.619 × 2.5×8.3145×(T₃ - 298) = 0.040 × 0.381 × 2.5×8.3145×(567.29 - T₃)
Solving gives;
T₃ ≈ 400.6 K
For a molar volume of gas cylinder, the temperature just after the valve is closed is T₃ ≈ 400.6 K
(b) If the cylinder sits in the storage for a long time, and heat is conducted out, we have;
The temperature of the cylinder will revert to room temperature of 298 K
The heat transferred is therefore;
0.040 × (2.5 × 8.3145 - 8.3145) ×(400.6 - 298) ≈ 51.184
The heat transferred from the cylinder is 51.184 J
(c) The pressure of the gas in the cylinder is therefore;
[tex]\dfrac{P_1}{T_1} = \mathbf{\dfrac{P_2}{T_2}}[/tex]
Which gives;
[tex]P_2= \mathbf{\dfrac{P_1}{T_1} \times T_2}[/tex]
Therefore;
[tex]P_2= \dfrac{50}{400.6} \times 298 \approx 37.194[/tex]
The pressure of the cylinder when it is shipped is 37.194 bar
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What does video compression do? Choose all that apply. reduces file size removes parts of a frame that change from one frame to the next removes parts of a frame that do not change from one frame to the next speeds uploading and downloading of video
Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network/Internet.
Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network or Internet.
What is a data frame?A data structure known as a "Data Frame" arranges data into a 2-dimensional table of rows and columns, much like a spreadsheet. Because they provide a flexible and user-friendly method of storing and interacting with data, a Data Frame is one of the most popular data structures used in contemporary data analytics.
The name and data type of each column is specified in a schema that is part of every Data Frame. Both common data types like StringType and IntegerType as well as Spark-specific data types like StructType can be found in Spark DataFrames. The Data Frame stores missing or incomplete values as null values.
Therefore, Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network or Internet.
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What’s the most important reason we should need a mask? Is the ban on removal of the mask requirement being implemented too fast in an area without general consensus (moral, political, cultural, technological)?
Answer:
What’s the most important reason we should need a mask?
we were because it protects us from germs and viruses.
Is the ban on removal of the mask requirement being implemented too fast in an area without general consensus (moral, political, cultural, technological)?
Face coverings limit the volume and travel distance of expiratory droplets dispersed when talking, breathing, and coughing.
Hope it helps!!!!!brainliest pls!!!!!!!!!i need the solution
Answer:
Isn't the answer written upside down in the sentence?
Explanation:
If the voltage increases in a circuit, what happens to the current (amperes) if the resistance stays
the same?
A) Decreases
C) Increases
B) Remains the same
D) Cannot be determined
Answer:
b remains the same
Explanation:
voltage and amps have no connection
the electricity used to rin your clothes dryer is normally 220V 18-24A
the voltage in your car's battery is usually 12V 20-30A
see they are approximately the same amperage but very different voltage
Having a bluish or black color of the material means it is ___________ so dip it in the water to cool down
Explanation:
I am sorry. I don't understand too :/ I haven't learn engineering before- But if I'm not wrong, if something is black, probably it's burnt? Because you have to dip it in the water to cool down.
For example, if a steel is burnt, it will change color like blue.
So the answer is "burnt".
Having a bluish or black color of the material means it is burnt so dip it in the water to cool down
hipe answer is correct
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What are two ways you can see that there is a smaller load going to the base of the transistor?
Answer:
Transistor switches can be used to switch a low voltage DC device (e.g. LED’s) ON or OFF by using a transistor in its saturated or cut-off state. Cut-off RegionHere the operating conditions of the transistor are zero input base current ( IB ), zero output collector current ( IC ) and maximum collector voltage ( VCE ) which results in a large depletion layer and no current flowing through the device. Therefore the transistor is switched “Fully-OFF”.
2.Saturation Region
Here the transistor will be biased so that the maximum amount of base current is applied, resulting in maximum collector current resulting in the minimum collector emitter voltage drop which results in the depletion layer being as small as possible and maximum current flowing through the transistor. Therefore the transistor is switched “Fully-ON”.
Explanation:
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A specialist graphics company is investing in a new machine which enables it to make high-quality prints for its clients. Demand for these prints is forecast to be around 100,000 units in first year and 220,000 units in second year. The fixed cost of purchasing a machine is €200.000 and
maximum printing capacity of a machine 100.000 unit per year. The variable cost of printing is
€1 per unit. The company believes they will be able to charge €4 per unit for producing the prints.
What profit are they likely to make in the first and second years?
The profit that will be made for the first and second years will be $100,000 and $460,000.
How to calculate the profit?The profit of the graphics company for the first year will be:
= 4(100000) - [200000 + 100000]
= 400000 - 300000
= 100000
The profit for the second year will be:
= 4(220000) - (200000 + 220000)
= 880000 - 420000
= 460000
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Bernice has a string of lights decorating her room. One of the bulbs burns out, but the rest of the lights in the chain function normally. What kind of circuit is the light string using?
A. series
B. parallel
C. redundant
D. analog