Please help me please
Answer: C
Explanation:
A resistance of 30Ω is placed in a circuit with a 90 volt battery. What current flows in the circuit?
Answer:
30 Amperes
Explanation:
if V ⇒ voltage
I ⇒ current
R ⇒ resistance
V = IR
90 = I x 30
90/30 = I
3 = I
Cooling water available at 10°C is used to condense steam at 30°C in the condenser of a power plant at a rate of 0.60 kg/s by circulating the cooling water through a bank of 7-m-long 1.2-cm-internal-diameter thin copper tubes. Water enters the tubes at a mean velocity of 4 m/s and leaves at a temperature of 24°C. The tubes are nearly isothermal at 30°C. Determine the average heat transfer coefficient between the water, the tubes, and the number of tubes needed to achieve the indicated heat transfer rate in the condenser.
Answer:
Dang this looks hard
Explanation:
Concrete has a higher specific heat than does soil. Use this fact to explain (partially) why a city has a higher average temperature than the surrounding countryside.
Answer:
Since concrete has higher specific heat, it will absorb more heat and the temperatures will rise in proportion. The large amount of energy stored in concrete during the day as the sun falls on it is released at night, resulting in an higher average evening temperature than the countryside. The cool air in the surrounding countryside exerts a buoyant force on the warmer air in the city, pushing it upward and moving into the city in the process. Thus, evening breezes tend to blow from country to city.
Explanation:
The city has a higher average temperature than the surrounding countryside as most of the cities are made up of concrete designs one of the things which absorb a lot of heat.
What is soil?Soil contains lots of minerals as well as microorganisms. One can grow crops or vegetation on the soil. This is made up of various types of sand and granules that can be present.
Concrete absorbs more heat because of its high surface heat, which causes temperatures to rise proportionately. Asphalt absorbs a lot of energy generated by the sun each day and releases it at night, giving cities a warmer average nighttime weather than rural.
The heated air in the city is propelled higher and toward the city by the density of water of the cooler in the nearby countryside. As a result, evening gusts frequently travel between rural to city.
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What is energy security, and why is it an important issue for many countries?
Answer:
What is energy security? Energy security is the association between national security and the availability or natural resources for energy consumption.
why is it an important issue for many countries? To ensure that their economics function without interruption and that their people have access to adequate, reliable and affordable supplies of modern and clean energy
What emerging technologies will make electrical energy safer, more usable, more efficient, cleaner?
Answer:
Technion - photovoltaic cell efficiency
A team of researchers at Israel's Technion research university has created new photovoltaic technology to harness lost radiation and convert it into energy, boosting solar cell efficiency from 30 to 50 percent.
Explanation:
Which type of weld is made by welding around the perimeter of a
hole?
Joints between two overlapping components are made by depositing a fillet weld around the perimeter of a hole in one component so that it can be attached to the surface of another component exposed through the hole.
My cramps hurt sm and I’m so emotional
Answer:
Okay? I can try to help you.
Go to sleep.Cry in pain.I hope this helped at all.
Answer:
Man up you women. Eat some travis scuout burjer
What’s the function of this circuit?
Explanation:
Function of circuit
The circuit is a "full adder". Its S output is the least-significant bit of the binary sum of the inputs A, B, C. Its C output is the most-significant bit of that 2-bit binary sum. The "S" and "C" refer to "sum" and "carry", respectively.
Truth table
See the attachment for the truth table. The column in gray is the decimal representation of the sum of the inputs A, B, C.
Answer:
Function of circuit
The circuit is a "full adder". Its S output is the least significant bit of the binary sum of the inputs A, B, C. Its C output is the most-significant bit of that 2-bit binary sum. The "S" and "C" refer to "sum" and "carry", respectively.
The circuit is a "full adder". Its S output is the least significant bit of the binary sum of the inputs A, B, C. Its C output is the most-significant bit of that 2-bit binary sum. The "S" and "C" refer to "sum" and "carry", respectively.Truth table
The circuit is a "full adder". Its S output is the least significant bit of the binary sum of the inputs A, B, C. Its C output is the most-significant bit of that 2-bit binary sum. The "S" and "C" refer to "sum" and "carry", respectively.Truth tableSee the attachment for the truth table. The column in gray is the decimal representation of the sum of the inputs A, B, C.
FOR DARKEND1
÷
try copy and paste
Answer:
FOR DARKEND1
÷
try copy and paste
Explanation:
interesting , no idea who Darkend1. Divide copy by paste
If we have to become a pilot what class should we choose
.
Science,
economics,
or commerce
Answer:
Class Not Necessary For Army
Explanation:
Just a normal degree is enough
Answer:
Degree Is Enough
Explanation:
Bcz of There is Class
Explain the purpose of wrench plzzz
Answer:
Wrenches are made in various shapes and sizes and are used for gripping, fastening, turning, tightening and loosening things like pipes, pipe fittings, nuts and bolts. There are basically two major kinds of wrenches: Pipe wrenches used in plumbing for gripping round (cylindrical) things.
two solid yellow center lines on a two-lane highway indicate:
Multiple Choice
1.
is light-gauge metallic tube used to route wires.
A. Electrical metallic tubing (EMT)
B. Flexible metal conduit (FMC)
C. Rigid metal conduit (RMC)
D. Polyvinyl chloride (PVC) conduit
Answer:
I guess A number is right
when the filament breaks in one lamp in a series circuit, other lamps in the circuit normally _________.
Answer:
when the filament breaks in one lamp in a series circuit, other lamps in the circuit normally stop working.
Explanation:
Technician A says that comparing the front vehicle height sensors to the rear sensors allows the ECM to determine body roll created by cornering force. Technician B says that vehicle height sensors are only located on the rear. Which technician is correct
Answer:
its b
Explanation:
Plzz help me plzzzz plzz
Answer:
A. Air powered
Explanation:
Pneumatic tools are compressed air driven power tools powered by an air compressor.
State three means of operating a power tool
What was jimmy neutron's first invention?
Answer:
oh i like this film
Explanation:
ye ye
State three means of operating a power tool
Answer:
A power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labor used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used. Other power sources include steam engines, direct burning of fuels and propellants, such as in powder-actuated tools, or even natural power sources such as wind or moving water. Tools directly driven by animal power are not generally considered power tools.
Power tools are used in industry, in construction, in the garden, for housework tasks such as cooking, cleaning, and around the house for purposes of driving (fasteners), drilling, cutting, shaping, sanding, grinding, routing, polishing, painting, heating and more.
Power tools are classified as either stationary or portable, where portable means hand-held. Portable power tools have obvious advantages in mobility. Stationary power tools, however, often have advantages in speed and precision. A typical table saw, for instance, not only cuts faster than a regular hand saw, but the cuts are smoother, straighter, and more square than what is normally achievable with a hand-held power saw. Some stationary power tools can produce objects that cannot be made in any other way. Lathes, for example, produce truly round objects.
Stationary power tools for metalworking are usually called machine tools. The term machine tool is not usually applied to stationary power tools for woodworking, although such usage is occasionally heard, and in some cases, such as drill presses and bench grinders, exactly the same tool is used for both woodworking and metalworking.
Explanation:
How deep does electrical conduit need to be buried?
is there water on mars
Answer:
nope, it is phsically impossible for water to be on mars
Explanation:
A person’s ability to use understand and relate to technology is known as :
A: Technology literacy
B: computer literacy
C: Technology knowledge
D: computer comprehension
Pick one out of those please
Answer:
A: Technology literacy
I took a computer class in the 8th grade.
Explanation:
hope this helps. . . <3
good luck! uωu
what factors need to be considered when building housing on a waterway
Answer:
Flooding
Explanation:
.
When building housing on a waterway one must always consider the factor of Flooding and its repercussions.
What is a Flood?A flood occurs when there is an excessive amount of water and it covers normally dry areas. The word can also refer to the tide's influx when used in the sense of "flowing water." Floods are a topic of research in the hydrology field and are very important to the fields of agriculture, civil engineering, and public health.
Floods have serious societal repercussions for both communities and people. As most people are well aware, flooding has a number of direct effects, including the loss of life, destruction of property, loss of crops and livestock, and worsening of health due to waterborne infections.
Stream gauges that are put in bodies of water close to inhabited areas are used to measure floods. The National Weather Service receives all data collected by them before it is sent to the United States Geological Survey (USGS), which erected and operates them (NWS)
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when you are performing an advanced filter, in which argument box do you enter the range for the dataset?
A fresh air louver mounted on an exterior wall and equipped with a damper to allow to allow the required fresh air into the boiler room
A should be closed
B remain open at all times
C should be open when the boiler off
D should open and close automatically
Answer:
DDDDDDDD
Explanation:
I THINK...............
Some benefits of science
Answer:
Scientific knowledge allows us to develop new technologies, solve practical problems, and make informed decisions — both individually and collectively. Because its products are so useful, the process of science is intertwined with those applications: New scientific knowledge may lead to new applications.
Explanation:
State three means of operating a power tool
soy nueva en esto me pudieran ayudar nadie me ayuda soy de peru y no endiendo nada de lo que me dicen alguie me puediera explicar como se utiliza esta fuente y si me pudiera guir y ser mi amigos o amiga para que me ayude , le agradecira un monton
Answer:
Explanation:
Tu pon lo que ocupes y espera
an automobile radiator is filled to the brim with water when the engine is cool. what happens to the water when the engine is running and the water has been raised to a high temperature?
Answer:
(a) As the water rises in temperature, it expands or rises in pressure or both. The excess volume would spill out of the cooling system, or else the pressure would rise very high indeed.
(b) Modern cooling systems have an overflow reservoir to accept the excess volume when the coolant heats up and expands.
Explanation:
hope it helps!
Water expands more when the temperature is elevated, increasing its volume. Consequently, the steel radiator will leak water. When the engine is running, the water is heated to higher temperatures, which causes it to expand and spill out.
What engine is running, the water raised to a temperature?Your engine should operate between 195 and 220 degrees, according to the majority of experts. Your needle should always remain centered in your gauge in ideal circumstances.
A thermostat, cylinder sleeve, cooling water pump, and heat exchanger are all components of an engine cooling water system. Water System for Engine Cooling. The cooling water must be circulated throughout the engine by a cooling water pump.
Therefore, This is due to the fact that radiator water will freeze when temperatures in colder countries fall below zero degrees, which is the freezing point of water.
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