Answer:
A. By hit and trial method 280 C
Explanation:
ion know B sorry
A transformer reads zero volts across the output terminals. The cause is most likely ___________________.
Explanation:
Nothing applied at input terminals, DC voltage applied at input, broken windings (I would say most likely) , defective test equipment are all possibilities
Using the Breguet range and endurance equation, estimate the amount of kerosene
fuel needed for an aircraft weighing 10 metric tons (this is the dry weight that
includes passengers and cargo) to fly from Boston to Los Angeles, assuming a
distance of 5,000 [km], flying at 300 [m/s].
Assume a lift-to-drag ratio of 15 - this is the ratio of lift force over drag force during
the cruise, the overall efficiency of 0.3, and about half of the standard air density at
an altitude of approximately 6,000 [m]. You can neglect the climb and descent
phases of the flight. The energy density of kerosene is provided in Module 9, section
3: "The Breguet range and endurance equation". Why is this a tricky calculation?
The amount of kerosene fuel needed for an aircraft weighing 10 metric tons to fly from Boston to Los Angeles, assuming a distance of 5,000 [km] is 10000 kg.
What is Breguet equation?Breguet equation is used to determine the range of airplane fly in some specified set of parameters.
[tex]R=\dfrac{h_f}{g}\dfrac{L}{D}\times \eta \ln \left(\dfrac{W_{initial}}{W_{final}}\right)[/tex]
Here, (L/D) is lift to drag ratio, g is gravitation acceleration, h is height and W is weight.
The weight of aircraft is 10 metric tons (this is the dry weight that includes passengers and cargo) The distance of 5,000 [km], with velocity at 300 [m/s] from Boston to Los Angeles has to be cover by the airplane.
The initial weight is 10 metric tons or 10000 kg. Thus, the final weight with total fuel burn is,
[tex]W_{final}=W_{initial}-W_{fuel}\\W_{final}=1-\dfrac{W_{fule}}{W_{initial}}[/tex]
The lift-to-drag ratio is 15 and the overall efficiency is 0.3, The standard air density at an altitude of approximately 6,000 [m] is half.
Thus, put the values, in above formula,
[tex]5000=\dfrac{6000}{9.81}(15)\times(0.3) \ln \left(\dfrac{10000}{1-\dfrac{W_{fuel}}{10000}}}\right)\\[/tex]
[tex]\ln \left(\dfrac{10000}{1-\dfrac{W_{fuel}}{10000}}}\right)=1.8167\\\ln \left(\dfrac{1}{10000-W_{fuel}}}\right)=1.8167[/tex]
Solving this equation, we get,
[tex]W_{fuel}=10000\rm\; kg\\[/tex]
Thus, the amount of kerosene fuel needed for an aircraft weighing 10 metric tons to fly from Boston to Los Angeles, assuming a distance of 5,000 [km] is 10000 kg.
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function of oil seal and sealant.
Answer:
oil seals function is To act as a physical barrier retaining the lubricating oil where it is bound to be.
Sealants function is to Fill a gap between two or more substrates .
Explanation:
Write an Essay describing in your own words, the two-way Communication Cycle naming all the stages and explaining what goes on at each stage. Illustrate any two barriers that may occur at each of the stages. A correctly labelled diagram is essential for your essay.
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means black in spanish!
Using a definition of the limit of function, prove that the following functions are continuous
at = 0:
) () = 1 − 2 + 52, 0 = 1
Answer:
... you gotta do divson?
Explanation:
Reverse masking forms a soft edge on the panel.
True
False
Table of Contents
(Auto body)
Use g = 9.8m/s2 and calculate the weight of 3 bricks of butter having a mass of half a kilo each
Answer:
This article deals with weight formula and its derivation. Weight refers to the force which acts on a body or object due to the effect of gravity. So, when an individual stands on a scale, the reading that appears is the weight. The more an individual weighs consequently means a higher reading on the scale. When an individual loses weight, he should think of it as lessening one’s force on the Earth due to gravity.
weight formula
What is Weight?
Simply speaking, weight refers to the force of gravity. Weight is certainly a force that acts on all bodies or objects at all times near a heavenly body such as the Earth. The Earth pulls all objects downward towards the center with a force of gravity. One can find the magnitude of the force of gravity by multiplying the magnitude of the acceleration due to gravity by the mass of the particular object.
Some books describe weight as a scalar quantity, the magnitude of the gravitational force. In contrast, some books refer to weight as a vector quantity, the gravitational force which acts on the object. Moreover, some experts explain weight as referring to the magnitude of the reaction force which is exerted on a body by various mechanisms. Also, these mechanisms keep the body in place.
The unit of measurement for weight is certainly that of force. This unit in the International System of Unit (SI) is the newton. The object with a mass of 1 kilogram would weigh about 9.8 Newtons on the Earth’s surface. Furthermore, it would weigh about one-sixth as much on the moon.
Weight Formula
The weight of an object or body certainly depends on the mass of the object and the gravity acting on it. This is why, the weight is different from mass. The mass of an object would be same whether on the Earth or on the Moon. The weight of an object due to the influence of gravity would be different on the Earth than on the Moon. The weight formula can be explained as follows:
Weight = mass × gravity
The formula for this is:
w = mg
Here we have,
w = weight
m = mass
g = gravity
Explanation:
FAT ASE O Safety and Foundat
All of the following statements regarding safety data sheets are true EXCEPT:
Select one:
O A. They should be consulted to learn how to use the product safely.
B. If you are using more than one product, consult the SDS of only one of the products.
C. They include information on chemical ingredients.
D. All new SDS should be in a uniform format.
a
Next page
Answer:
it should be A bc I took the test a while back
A compressible clay layer has a thickness of 3.8 m. After 1.5 yr, when the clay is 50% consolidated, 7.3 cm of settlement has occurred. For a similar clay and loading conditions, how much settlement would occur at the end of 1.5 yr and 5 yr if the thickness of this new layer were 38 m
The amount of settlement that would occur at the end of 1.5 year and 5 year are 7.3 cm and 13.14 cm respectively.
How to determine the amount of settlement?For a layer of 3.8 m thickness, we were given the following parameters:
U = 50% = 0.5.Sc = 7.3 cm.For Sf, we have:
Sf = Sc/U
Sf = 7.3/0.5
Sf = 14.6
Therefore, Sf for a layer of 38 m thickness is given by:
Sf = 14.6 × 38/3.8
Sf = 146 cm.
At 50%, the time for a layer of 3.8 m thickness is:
[tex]t_{50}[/tex] = 1.5 year.
At 50%, the time for a layer of 38 m thickness is:
[tex]t_{50}[/tex] = 1.5 × (38/3.8)²
[tex]t_{50}[/tex] = 150 years.
For a thickness of 38 m, U₂ is given by:
[tex]\frac{U_1^2}{U_2^2} =\frac{(T_v)_1}{(T_v)_2} = \frac{t_1}{t_2} \\\\U_2^2 = U_1^2 \times [\frac{t_2}{t_1} ]\\\\U_2^2 = 0.5^2 \times [\frac{1.5}{150} ]\\\\U_2^2 = 0.25 \times 0.01\\\\U_2=\sqrt{0.0025} \\\\U_2=0.05[/tex]
The new settlement after 1.5 year is:
Sc = U₂Sf
Sc = 0.05 × 146
Sc = 7.3 cm.
For time, t₂ = 5 year:
[tex]U_2^2 = U_1^2 \times [\frac{t_2}{t_1} ]\\\\U_2^2 = 0.5^2 \times [\frac{5}{150} ]\\\\U_2^2 = 0.25 \times 0.03\\\\U_2=\sqrt{0.0075} \\\\U_2=0.09[/tex]
The new settlement after 5 year is:
Sc = U₂Sf
Sc = 0.09 × 146
Sc = 13.14 cm.
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You and a friend are going to calculate the streamflow for a creek near your house using the float method. You mark out a 50 meter section of the stream and then float an orange down the section. You record the following times: Trial 1: 78 seconds Trial 2: 86 seconds Trial 3: 80 Seconds What is the average travel time for your float
The average time it takes for an orange to float down a river is 81.33 seconds.
How to calculate the average time?
To calculate the average time of this experiment we must perform the following operations.
Add the three results of each test:
78sec + 86sec + 81sec = 244secWe divide the result by the amount of data we have, that is, three.
244sec ÷ 3 = 81.33secAccording to the above, it can be inferred that the average time it takes for an orange to travel the 50 meters of the river is 81.33 seconds.
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When rolling two dice, the probability of rolling doubles is 1/6. Suppose that a game player rolls the dice five times, hoping to roll doubles. What is the probability the player gets doubles less than three times in 5 attempts?
The probability that the player gets doubles less than three times in 5 attempts is; 0.9645.
How to solve Binomial Probability?
The formula for binomial probability distribution is;
P(X = x) = ⁿCₓ × pˣ × (1 - p)⁽ⁿ ⁻ ˣ⁾
where;
x = total number of successes
p = probability of a success on an individual trial
n = number of trials
We are given;
x = 3
p = 1/6 = 0.1667
n = 5
Thus;
P(X < 3) = (⁵C₂ * 0.1667 * (1 - 0.1667)⁽⁵ ⁻ ²⁾) + (⁵C₁ * 0.1667 * (1 - 0.1667)⁽⁵ ⁻ ¹⁾) + (⁵C₀ * 0.1667 * (1 - 0.1667)⁽⁵ ⁻ ⁰⁾)
Thus;
P(X < 3) = 0.9645
Thus, the probability that the player gets doubles less than three times in 5 attempts is 0.9645.
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How does a Red Team versus Blue Team exercise help an organization?
Answer: They are both different colors which can work together.
Explanation:
What kind of situations breaks the causal link?
Answer:A novus actus
Choose the statement that correctly describes the circuit below. image is not found a. The above circuit is invalid because nMOS and pMOS transistors cannot be used in the same circuit. b. The circuit is composed of 1 pMOS and 2 nMOS transistors. c. If control input a
The statement that correctly describes the circuit is the circuit provided is an example of a CMOS circuit.
What is a CMOS circuit?The CMOS circuit is a term that is often known as "Complementary Metal Oxide Semiconductor."
This is known to be a machine that create integrated circuits and it is one that is often seen a a lot of electronic component and as such, the the circuit provided is an example of a CMOS circuit.
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What is the importance of the causal link
in work accidents?
Causal link is very important to know the correlation between a cause and an outcome of a workplace accident which is useful for social insurance cover.
Understanding work accidents?
In work accidents, there is the need for evaluation criteria and injury determination. Now, this is where causal link comes in because we'll need to know whether the damage is a permanent disability or not.
Now, causal link is important because it helps us to know the correlation between a cause and an outcome of a workplace accident and whether it was intentional or caused by other factors. This is very important because of social insurance cover.
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Masking decisions are made when developing a refinishing plan.
True
O False
Table of Contents
Masking decisions are made when developing a refinishing plan: True.
What is a refinishing plan?A refinishing plan can be defined as a process through which automobile vehicles or other mobile equipment are coated with a paint and masking tape during repair, so as to beautify them and give it a new look.
This ultimately implies that, masking decisions are made by an engineer when developing a refinishing plan.
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15- Vipsana's Gyros House sells gyros. The cost of ingredients (pita, meat, spices, etc.) to make a gyro is $2.00. Vipsana pays her employee $60 per day. She also incurs a fixed cost of $120 per day. Calculate Vipsana's variable cost per day when she produces 50 gyros using two workers?
A) $100
B) $124.40
C) $220
D) $240
Reason for IEE regulations in electrical installation
what are the importance of crystallography in geology
The importance of crystallography in geology is that it is used in phase identification of minerals.
What is crystallography?Crystallography can be defined as the study of minerals and it's description according to geometrical observation.
In geology, minerals are resources of major economic importance and they are mostly crystalline. This simply explains the role of crystallography in geology.
Therefore, the importance of crystallography in geology is that it is used in phase identification of minerals.
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What is the rate at which electrical energy is being dissipated by the resistance of the loop?.
Answer: see attached files
The concept that states the equivalency of two voltage sources means that for any given load resistance connected to the two sources, the same load voltage and load current are produced by both sources is called:
Answer:
Terminal equivalency
Explanation:
What were the trade-offs and opportunity costs of one of Teasha’s economic decisions?
Answer:
Opportunity cost she loses the chance to get the degree. The trade- off is she gets to start a business.
Explanation:
What are the three major costs of owning a vehicle throughout a year?
Answer:
Car Payments. Making payments on your car is the biggest, most obvious expense of your vehicle. ...
Insurance. Insurance is another primary expense to consider when budgeting for a new car. ...
Gas. ...
Maintenance. ...
Fees & Taxes.
Explanation:
Answer:
Owning a car is expensive. Between the price of the vehicle, financing costs, insurance, taxes, and maintenance, owning one —let alone two — cars can drain your bank account quickly.
Explanation: