The answer is A. Sensors
If two solar cells are connected in parallel, what will be the output voltage ?
Explanation:
Hope it helps you!!Calculate the charge stored in a 2 microFarads capacitor with a voltage of 50V applied on it
Answer:
Charge = 0.1 Coulmbs
Explanation:
Q=CV
Q being the charge in coulombs
C being the capacitance
V being the voltage
You will multiply the capacitance value by the voltage and that equals your charge in coulombs
(50V) * (2mF) = 0.1 Coulombs
Electric Charge itself is defined as a property of matter to experience a force when placed in a CHANGING magnetic field.
Question 3
Sometimes when people first hear about the Traveling Salesman problem, they think: "Oh, that's not hard. Start with a city on the map; move to the nearest unvisited city; and then on each subsequent step, move to the nearest still-unvisited city, until you're done." This strategy is called a "greedy strategy": it always goes to the nearest allowed step.
Now consider four cities, all placed along the number line. City A is at point 0, City B at point 2, City C at point 3, and City D at point 10:
A B C D
00-01-02-03-04-05-06-07-08-09-10
Now, start a traveling salesman tour at City B, and use the greedy algorithm to choose your tour of the four cities, beginning and ending at B. How long is the greedy algorithm’s tour?
Answer:
22
Explanation:
The tour length will be the sum of the lengths of its segments. Here, we will figure the length using the greedy algorithm.
__
Starting at B=2, the nearest unvisited city is C=3, a distance of 1.
From C, the nearest unvisited city is A=0, a distance of 3.
From A, the nearest unvisited city is D=10, a distance of 10.
The return trip from D to B is a distance of 8.
The total length of the tour is ...
1 + 3 + 10 + 8 = 22
write a brief design of bridge
Answer:Brief introduction to your bridge project (Design brief): 100 words. ... The purpose of this bridge is to fit a 500mm long by 100mm gap in an area where stormy
Explanation:Brief introduction to your bridge project (Design brief): 100 words. ... The purpose of this bridge is to fit a 500mm long by 100mm gap in an area where stormy
Why is Math mandatory in engineering?
Answer:
because Engineering focuses largely on designing and developing solutions to problems, and engineers often need to perform equations and calculations as part of the process of developing, building and testing the solutions they design.Explanation:
What is one unit used to measure the base dimensions, or fundamental quantities, of an object?
A. mole
B. kelvin
C. hertz
D. volt
Answer:
Volt is the correct answer
Consider street lights that come on automatically. Why is it important that a low amount of current is sent to the base of a transistor, but that the collector and emitter are able to handle a large amount of current? (35 POINTS) Pls help
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.
<3
The enforcement of OSHA standards is provided by federal and state
O master electricians
O lawmakers
O tax collectors
O safety inspectors
Answer:
Explanation:
Enforcing OSHA, Occupational Safety and Health Administration, standards is not a job for electricians, lawmakers or tax collectors. The right answer is safety inspectors.
What does a restriction in the fuel return line cause?
Answer:
Carburetor flooding, engine stalling, and hard starting
Explanation:
If the fuel return hose becomes blocked or kinked it may cause the carburetor to flood from excessive fuel or pressure buildup.
A 3 mm diameter and 5 m long electric wire is tightly wrapped with a 2 mm thick plastic cover whose thermal conductivity is k= 0.15 W/m°C. Electrical measurements indicates that a current of 10A and voltage drop of 8V along the wire. If the insulated wire is exposed to a medium at T∞= 30C with h= 12 W/m2°C, determine the temperature at the interface of the wire and the plastic cover in steady operation. Also, determine whether doubling the thickness of the plastic cover will increase or decrease this interface temperature.
Answer:
According to the problem the diameter of the wire , r1
The outer diameter after wrapping , r2 = 7mm
The thickness of the plastic cover , t
Length of the wire = I
The Thermal conductivity of cover = = k
Current pass through the wire = I
Due to current passing voltage dropped, is V
The temperature = T
Heat transfer coefficient = h
The rate at which the heat is generated in the wire,
q= VI = 8 * 10 =80 Watt
Now for calculating the resistance for each medium .
x1 = 1/hA2 = 1/2 x 2π x 0.0035 x 5 = 0.76 K/ W
x2 = ln r2/r1/2πkl = ln 0.0035/0.0015 /2π 0.15 x 5 = 0.179 K/W
Therefore the total resistance ,
R = x1+x2 = 0.76 +0.179 = 0.939 K/W
Now to calculate the temperature at the interface of the wire,
q= R(T - t)
=> 80 = 0.939(T -30- 273)
T = 378.12 K
Critical radius is r(critical)
r(critical) = K/h = 0.15/12 = 0.0125 m or 12.5 mm
Training credentials are used to confirm
O skill development
O electrical expertise
O age and educational background
O problem-solving ability
Training credentials are used to confirm an individual's: A. skill development.
What is a training credential?A training credential can be defined as a formally written and signed document that is typically issued by a training institute to a trainee after learning and gaining the requisite knowledge over a specific period of time.
This ultimately implies that, a training credential are designed and developed to confirm that a particular trainee has acquired and possesses a skill, knowledge, understanding, etc.
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4. On wet roads, the chance of hydroplaning increases with the increase of speed.
True
False
Answer:
The answer to the question is True
On wet roads, the chance of hydroplaning increases with the increase of speed. Thus, the given statement is true.
During rainy weather, roads may become slippery and difficult to drive on. Slippery roads may also arise as a result of snow or ice. The fact that the road surface has less traction than normal is what makes it slippery. On slippery roads, it is recommended that drivers slow down to reduce the risk of skidding, sliding, or losing control of their cars, especially when taking turns.
Drivers should also increase their following distance and avoid abrupt braking or accelerating. Drivers should not drive faster than 25 mph on slippery roads, and they should not increase their speed to avoid hydroplaning. Instead, drivers should slow down.
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8.
Galileo proposed the heliocentric model of the solar system.
a. True
b. False
Answer: B the first person to propose the heliocentric model of the solar system was Nicolaus Copernicus
Explanation:
In filling bags of nitrogen fertilizer, it is desired to hold the average overfill to as low a value as possible. The lower specification limit is 22.00 kg (48.50 lb), the popu-lation mean weight of the bags is 22.73 kg (50.11 lb), and the population standard deviation is 0.80 kg (1.76 lb). What percentage of the bags contains less than 22 kg? If it is permissible for 5% of the bags to be below 22 kg, what would be the average weight? Assume a normal distribution.
18.14% of the bags contains less than 22 kg
What is z score?Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (raw score - mean) / standard deviation
Given that:
Mean = 22.73 kg, standard deviation = 0.80 kg
a) For <22:
z = (22 - 22.73)/0.8 = -0.91
P(z < -0.91) = 0.1814
18.14% of the bags contains less than 22 kg
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A programmable integrated circuit (PIC) is another name for a microcontroller.
A. True
B. False
Answer:
true
Explanation:
Diodes are used in DC circuits but not AC circuits.
A. True
B. False
Answer:
True diodes are not allowed at AC circuits
Develop rough sketches of ideas bridge
Answer:
look online
Explanation:
Find the altitude of the right cylinder of maximum convex surface that can be inscribed in a given sphere.
Answer:
The radius 4 is maximum in convex surface
In a dual zone climate control system, the ducts and airflow are split. Which of the following are used to control the temperatures
A. Evaporators
B. Heater cores
C. Compressors
D. Air mix doors
Answer:
D. Air mix doors
Explanation:
Air doorways are used to control the temperature in the dual-zone climate control system.
What safety concerns must be addressed before
welding on a large assembly outside of a welding
booth?
Answer:
the clothing you wear, what's in the air (gases), surrounding and weather
The __________________ refers to the main screen of the computer.
Answer:
Desktop
Explain:
Desktop refers to the main screen of the computer. It is the first screen you see after logging in. The desktop’s appearance can vary widely because it is highly customizable, but generally desktops will feature a large image, icons, and a taskbar(covered later on this page).
Which of the following statements is correct?
The thermostat controls the operation of the fan motor.
The 1-C contacts control the operation of the fan motor.
The L, M, and H terminals control the speed of the compressor.
Terminals 1 and L1 on the selector switch are electrically the same.
the Answer:
The thermostat controls the operation of the fan motor
Explanation:
Assuming this is a Household HVAC
The thermostat controls the operation of the fan motor, the operation of the heating elements, the compressor, and the flow of refrigerant through the A-coil
Assuming this is an Automotive application
The thermostat controls the operation of the fan motor and the flow of engine coolant
Select the correct answer from each drop-down menu.
Choose the correct phrases to complete the sentences to explain the features of assembly line production.
The assembly line is an example of a
system. The advantage it has over other systems is that it
.
First one options is (custom production, batch production, mass production)
second one options is (enables mass production without significant capital costs,
helps production at the cheapest cost per piece, creates products to individual specifications)
Which of the following will create a screen object? Python
screen = turtle()
screen = turtle.Screen()
screen = screen.Turtle()
screen = turtle.Turtle()
Answer:
what?
Explanation:
Adhered ceramic veneer has a thickness of less than _______.
O 1/4 inch
O 1/2 inch
O 3/4 inch
O 1 inch
Answer:
the answer is D
Explanation:
i took the test
Adhered ceramic veneer has a thickness of less than 1 inch. Thus, option D is correct.
What will be the calculation for thickness?the width of the wall is 21 3/8 = 171/8
the width of a tile is 4 1/2 = 9/2
so the number of tiles is
(171/8) / (9/2) = 171x2 / (9 x8) = 4.75
so the no of tiles needed is 5.
The numbers of large bowl sold at the fair is 20
Data;
Total bowl sold = 32
Total amount made = $916
Cost of small ceramic bowl = $18
Cost large bowl = $35
System of Equation
To solve this problem, we need to write system of equations for this.
Let x represent the numbers of small ceramic bowl
let y represent the numbers of large ceramic bowl
We want to simplify:
102 * 4 - 3(8 * 8 * 1)
We will apply BODMAS:
Solving the Bracket first:
102 * 4 - 3(64)
102 * 4 - 192
=> 408 - 192
= 216 cubic inches
He will need 216 cubic inches of packing foam.
Therefore, Adhered ceramic veneer has a thickness of less than 1 inch. Thus, option D is correct.
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What are some advantages of making electronic components like transistors increasingly smaller?
Answer:
Dr. Engelbart, who would later help develop the computer mouse and other personal computing technologies, theorized that as electronic circuits were made smaller, their components would get faster, require less power and become cheaper to produce — all at an accelerating pace
A ball is dropped from rest from the top of a cliff that is 30 m high. From ground
level, a second ball is thrown straight upward at the same instant that the first ball is dropped.
The initial speed of the second ball eventually hits the ground. In the absence of air resistance,
the motions of the balls are just the reverse of each other. Determine how far below the top of
the cliff the balls cross paths.v
The distance below the top of the cliff that the two balls cross paths is 7.53 meters.
Given the following data:
Initial velocity = 0 m/s (since the ball is dropped from rest).Height = 30 meters.Scientific data:
Acceleration due to gravity (a) = 9.8 [tex]m/s^2[/tex].To determine how far (distance) below the top of the cliff that the two balls cross paths, we would apply the third equation of motion.
How to calculate the velocity.Mathematically, the third equation of motion is given by this formula:
[tex]V^2 = U^2 +2aS[/tex]
Where:
V is the final velocity.U is the initial velocity.a is the acceleration.S is the distance covered.Substituting the parameters into the formula, we have;
[tex]V^2 = 0^2 +2(9.8) \times 30\\\\V^2 = 588\\\\V=\sqrt{588}[/tex]
V = 24.25 m/s.
Note: The final velocity of the first ball becomes the initial velocity of the second ball.
The time at which the two balls meet is calculated as:
[tex]Time = \frac{S}{U} \\\\Time = \frac{30}{24.25}[/tex]
Time = 1.24 seconds.
The position of the ball when it is dropped from the cliff is calculated as:
[tex]y_1 = h-\frac{1}{2} at^2\\\\y_1 = 30-\frac{1}{2} \times 9.8 \times 1.24^2\\\\y_1 = 30-7.53\\\\y_1=22.47\;meters[/tex]
Lastly, the distance below the top of the cliff is calculated as:
[tex]Distance = 30-22.47[/tex]
Distance = 7.53 meters.
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In a typical American building, most modern lighting systems must use what voltage?
A. S V
B. 48 V
C. 120 V
D. 250 V
Answer:
Typically, either 110-volt AC (110V) or 220-volt AC (220V) is used. Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity.
Which of the following devices is not a networking device?
O Switch
O Hub
O Bridge
O None of these
Explanation:
I thought all of them are networking devices
I need to get answer for it
Answer:
A is the answer i guess
a is in a normal position and is letting him stand on the ground so I guess A is the answer