Electromagnetic waves can transfer energy without a material medium.
3 examples of elctromagnetic energy include: Radio wave, X-rays and gamma rays
What is wave?A wave is a disturbance that transfers energy from one point to another.
Electromagnetic waves are waves that does not require a material medium for the tranfer of energy
Radio waveGamma raysX-raysLight waveRead more on Electromagnetic waves here: https://brainly.com/question/13874687
How can we love our country? Not by words but by deeds. - Jose P. Laurel
A person can love their country by deed through the act of helping people and by volunteering in the cleaning out community.
What is this Jose P. Laurel quote about?Jose P. Laurel is known to be a man who emphasis that the love that one has for his or her country is not shown only by words but also by deed
He believe that it is not an occasional virtue people often display. He stated that people need to have unflinching determination to serve their country.
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Which part of the electromagnetic spectrum is used in televisiions
Answer:
Television's use 2 portions of the electromagnet spectrum and that is Visible light and radio waves.
Explanation:
Visible light helps us see the picture on the television and radio waves are used to send pictures to television's screen.
b) Consider a large plane wall of thickness L = 0.4 m, thermal conductivity k = 1.8 W/m·K, and surface area A = 30 m2. The left side of the wall is maintained at a constant temperature of T1 = 90°C while the right side loses heat by convection to the surrounding air at
Answer:
A is correct
Explanation:
I took the test
Omar owns a stall selling handmade cosmetics, and wants to launch an e-commerce site. He has lots of experience selling his products in person at markets, but is now hoping to reach more customers online.
Can you advise Omar on how to make both his online and offline business successful?
Answer:
He could put up advertisements all over the town and pay a few websites or search engines to have his company and ads be more common. He should also use some designs and make his company's sign very adequate.
10 tasks and 5 exercises. How many ways are there to build the test?
To find how many ways, you must simply multiply 10 tasks and 5 exercises
Ways: = 10 * 5 = 50 ways
Hope that helps!
A conductive loop on the x-y plane is bounded by rho = 2.0 cm, rho = 6.0 cm, φ = 0º and φ = 90º. 2.0 a of current flows in the loop, going in the aφ direction on the rho = 2.0 cm arm. determine h at the origin
select one:
a. 8.4 az (a/m)
b. 4.2 ay (a/m)
c. 8.4 ax (a/m)
d. 4.2 az (a/m)
Answer:
b. 4.2 az (A/m)
Explanation:
b is the answer
When are we going to abandon internal combustion engines?
Answer:
2035
Explanation:
Most car and truck companies say that they will completely get rid of internal combustion engines by 2035.
Consider a homogeneous spherical piece of radioactive material of radius ro = 0.04 m that is generating heat at a constant rate of ėgen = 5 x 107 w/m3 . the heat generated is dissipated to the environment steadily. the outer surface of the sphere is maintained at a uniform temperature of 110°c and the thermal conductivity of the sphere is k = 15 w/m·k. assuming steady one-dimensional heat transfer, (a) express the differential equation and the boundary conditions for heat conduction through the sphere, (b) obtain a relation for the variation of temperature in the sphere by solving the differential equation, and (c) determine the temperature at the center of the sphere.
Answer:
Please report my answer
Explanation:
I want my account deleted
A nuclear ________ reactor heats a liquid to an extremely high temperature in order to power a nuclear rocket. (7 letters)
Answer:
Thermal
Explanation:
There are seven letters in the word "thermal". High temperature would indicate the liquid needs to be at a high heat. Thermal means "heat". Therefore, the answer should be thermal.
Here's what the answer should be: A nuclear thermal reactor heats a liquid to an extremely high temperature in order to power a nuclear rocket.
I hope this helps!
-No one
Might a synchronous motor equally well be called a synchronous inductor
In Engineering, a synchronous motor is sometimes referred to as synchronous capacitor but not a synchronous inductor.
What is a synchronous motor?A synchronous motor can be defined as an alternating current (AC) electric motor in which the rotation speed of the shaft is directly proportional to the frequency of the supply current, especially at steady state.
Basically, a synchronous motor is sometimes referred to as a synchronous capacitor because it can be used to correct the power factor (PF) of a lagging load such as an induction motor.
However, a synchronous motor cannot be called a synchronous inductor because the rotation speed of the shaft is not proportional to the synchronous speed of the motor. Thus, they are called an synchronous motor.
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Construction engineering does not have much to do with design.
True
False
Joe maylan an employee of acme company has been sent to do some work in the highland company's main lobby. This job will take two days. Which type of pass should joe be given?
The type of Pass that Joe Maylan should be given is called; Temporary Pass
What is temporary pass?In factories or industries, there are different types of pass given to workers and visitors visit such places on a daily basis. In this case Joe maylan is going to do a job in the company for just 2 days and as such the type of pass he willl get will be a temporary pass.
It will be a temporary pass because it is a document pass issued for short-term use or due to an emergency.
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Explain how the ideal vapour compression refrigerator cycle is an improvement upon the Carnot cycle. Use any two of the problems to explain.
What is the definition of gross axle weight rating?.
Calculate the acceleration of a 2000kg single engine airlane just before take off when the thrust of the engine is 500n?
Answer:
0.25 m/s²
Explanation:
A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. The transistor is cooled by air flowing over it with an average heat transfer coefficient of 30 W/m2°C air = 30°C If the air temperature is 55°C and the transistor case temperature is not to exceed 70°C, determine the amount of power this transistor can dissipate safely. Disregard any heat transfer from the transistor base.
The minimum safety power that is safely dissipated using a transistor of height 0.4cm and diameter 0.06cm is 0.04665
Calculation for the exposed area[tex]\pi DL +\frac{\pi }{4} D^2\\\\Area = 3.14 * 0.6*0.4+\frac{3.14}{4} *0.6^2[/tex]
D = diameter = 0.6cm
Length = height = 0.4cm
Area = 1.0367cm²
minimum safety heat that is dissipatedhA (Ts - Tair)
30 * 1.0367 x 10⁻⁴(70-55)
= 0.04665
The minimum safety power that is safely dissipated is 0.04665W
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In python
Write an expression that executes the loop body as long as the user enters a non-negative number.
Note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds and report "Program end never reached." The system doesn't print the test case that caused the reported message.
Sample outputs with inputs: 9 5 2 -1
Body
Body
Body
Done.
Answer:
inputed = input("Choose some numbers, each separated with a space: ")
chosen = list(inputed)
chosen = chosen.remove(' ')
for value in chosen:
if '-' not in value:
print(Body)
else:
print(Done)
break
Explanation:
The for loop will go through every value in the list (your numbers) and check if it is positive or negative.
It was a mistake that i put in under 13 of age can you put it for 27
Answer:
ill try to help you :)
Explanation:
Which of the following statements about resistance is TRUE?
Resistance resists or opposes the amount of protons flowing through voltage.
Resistance allows the amount of neutrons flowing through a circuit.
Resistance resists or opposes the amount of neutrons and protons flowing through a circuit.
Resistance resists or opposes the amount of electrons flowing through a circuit.
Answer:
I think it's the no 3rd
Explanation:
hope this helps
During the design of spherical pressure vessel for space programs, a primary criterion is the mass of the vessel (which determines how much it costs to put it into the orbit). Given the stress in a thin walled spherical vessel is tensile and given by:
Tensile stress in a thin wall spherical shell is given by
σ = ( p r ) /2t
Tensile stressThis is the type of stress that involves pulling out. it is the opposite of compressive stress.
The tensile stress, σ at the circumference of the shell is the hoop stress. The value equals that of pressure acting on the area.
Therefore:
σ * 2πr * t = p * πr^2
where
2πr = circumference of a circle
πr^2 = area of a circle
p = internal pressure
t = thickness
σ * 2πr * t = p * πr^2
σ = ( p r ) /2t
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Darron loves his career because it mostly fits in with his lifestyle. He likes how he is able to make a lot of money and
stay very busy while at work. He also likes that he travels a lot and gets to see new places. He thinks that one of the
reasons he is successful is that he enjoys the competition in his career that some people would find stressful.
However, he wishes he had more time at home with his family.
Which aspect of Darron's career matches his lifestyle but is also in conflict with some of his desires?
® busyness while at work
® earning money
O frequent travel
© strong competition
Answer:
A
Explanation:
He says he loves work, but wants more time with his family, so this is in conflict with some of his other desires.
Which organization would provide business and leadership training to a high school hospitality student?
Answer:
Future Business Leaders of America
Explanation:
In-------process the hot drawn bar or rod is pulled through the die.
Answer:
Explanation:
he metallic rod is fixed into the dies by using a die holder and then a drawing head is used in which the metallic rod is fixed through a jaw mechanism. And then the bar is stretched and slides between the surfaces of the die
Explain what a structural engineer does?
Explanation:
Structural Engineers create drawings and specifications, perform calculations, review the work of other engineers, write reports and evaluations, and observe construction sites. A Professional Engineer's license is required in order to practice Structural Engineering.
state 5 general rules for cleat wiring
A platinum resistance temperature detector has a resistance of 100.00 V at 0°C, 138.50 V at 100°C and 175.83 V at 200°C. What will be the nonlinearity error in °C at 100°C if the detector is assumed to have a linear relationship between 0 and 200°C?
Answer:
about 1.54 °C
Explanation:
The error will be the difference between the temperature interpreted from the resistance value and the actual temperature. The linear equation used to translate the resistance reading to temperature will be ...
T = (200 -0)/(175.83 -100.00)(R -100.00)
T ≈ 2.637479(R -100)
At the temperature of 100°C, the resistance value of 138.50 will be interpreted to be a temperature of ...
T = 2.637479(138.50 -100) ≈ 101.543°C
This represents an error of 1.543°C relative to the actual temperature.
The steel bracket is used to connect the ends of two cables. if the allowable normal stress for the steel is sallow = 30 ksi, determine the largest tensile force p that can be applied to the cables. assume the bracket is a rod having a diameter of 1.5 in.
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
The static equilibrium is given as:
F = P (Normal force)
Formula for moment at section
M = P(4 + 1.5/2)
= 4.75p
Solve for the cross sectional area
Area = [tex]\frac{\pi d^{2} }{4}[/tex]
d = 1.5
[tex]\frac{\pi *1.5^{2} }{4}[/tex]
= 1.767 inches²
Solve for inertia
[tex]\frac{\pi *0.75^4}{4}[/tex]
= 0.2485inches⁴
Solve for the tensile force from here
[tex]\frac{F}{A} +\frac{Mc}{I}[/tex]
30x10³ = [tex]\frac{P}{1.767} +\frac{4.75p*0.75}{0.2485} \\\\[/tex]
30000 = 14.902 p
divide through by 14.902
2013.15 = P
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
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Additional scals apply to the
of the Class I locations,
O a anterior and posterior sections
O b. distal and medial boundaries
O c conduit entrances
O d. horizontal as well as vertical boundaries
does advanced auto parts install engine air filter
Answer:
You have to do it yourself.
Explanation:
A glass of water with a mass of 0.45kg at 20∘C is to be cooled to 0∘C by dropping ice cubes at 0∘C into it. The latent heat of fusion of ice is 334kJ/kg, and the specific heat of water is 4.18kJ/kg⋅∘C. The amount of ice that needs to be added is.
By using the concept of heat transfer, we need to add 0.045kg or 45g of ice to the glass of water to cool it from 20∘C to 0∘C.
The heat lost by the water is equal to the heat gained by the ice cubes. We can use the following equation to calculate the heat transfer:
Q = m_w * c_w * ΔT + m_i * L_f
where Q is the heat transfer, m_w is the mass of water, c_w is the specific heat of water, ΔT is the temperature change (20-0 = 20∘C), m_i is the mass of ice, and L_f is the latent heat of fusion of ice.
We know the values of m_w (0.45kg), c_w (4.18kJ/kg⋅∘C), ΔT (20∘C), and L_f (334kJ/kg). We can rearrange the equation to solve for m_i:
m_i = (Q - m_w * c_w * ΔT) / L_f
Substituting the values, we get:
m_i = [(0.45kg) * (4.18kJ/kg⋅∘C) * (20∘C) - 0] / (334kJ/kg
m_i = 0.045kg
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