definition of ceramics
Answer:
Ceramics are generally made by taking mixtures of clay, earthen elements, powders, and water and shaping them into desired forms. Once the ceramic has been shaped, it is fired in a high temperature oven known as a kiln. Often, ceramics are covered in decorative, waterproof, paint-like substances known as glazes.
Explanation:
Answer:
made essentially from a nonmetallic mineral (such as clay) by firing at a high temperature.
Explanation:
An ideal Otto Cycle has a compression ratio of 9.2 and uses air as the working fluid. At the beginning of the compression process, air is at 98kPa and 20C. The pressure is doubled during the constant volume heat addition process. Assuming constant specific heats, determine:
Answer: hello your question is incomplete below is the complete question
An ideal Otto Cycle has a compression ratio of 9.2 and uses air as the working fluid. At the beginning of the compression process, air is at 98kPa and 20C. The pressure is doubled during the constant volume heat addition process. Assuming constant specific heats, determine:the amount of heat transferred to the air
answer : 609.804 kj/kg
Explanation:
Given data:
compression ratio (r)= 9.2
pressure given(p1) = 98 kPa
Initial temperature = 20 + 273 = 293 k
pressure during constant volume heat addition process = 2p1
note : specific heat at constant pressure and specific heat at constant volume varies with temperature
we use T = 300k because it is closest to T1 = 293 k
hence at T = 300 K ( ideal gas properties of air )
\(u_{1}\) = 214.07 Kj/kg
\(v _{r1}\) = 621.2
To get \(v_{r2}\) = \(v_{r1} * \frac{v_{2} }{r}\) = 621.2 * 1 / 9.2 = 67.52
ALSO at \(v_{r2}\) = 67.52 ( from ideal gas properties )
\(u_{2}\) = 518.9 kj/kg
T2 = 708.32 k
next we apply the gas equation
\(\frac{p1v1}{T1} = \frac{p2v2}{T2}\)
hence p2 = (9.2) * \(\frac{708.32}{293} * 98\) = 2179.59 kpa
to determine T3 due to the constant volume heat addition
\(\frac{T3}{T2} = \frac{P3}{P2}\)
Hence T3 = p3/p2 * T2 = 2( 708.32 ) = 1416.64 k
At T3 = 1416.64 k ( from ideal gas properties )
\(u_{3}\) = 1128.704 kj/kg
\(v_{r3}\) = 8.592
Determine the amount of heat transferred to the air
\(q_{in} = ( u_{3} - u_{2} )\)
= ( 1128.704 - 518.9 )
= 609.804 kj/kg
Evaluate the intensity of solar radiation for 6 September 2021 , given solar constant ( Isc ) = 1800 W / m2
Answer:
The answer is "\(1802.1978 \ \frac{w}{m^2}\)"
Explanation:
The Solar radiation reaches the earth surfaces is given by
\(I=Isc(1+0.033 \cos \frac{360.(n)}{365.25})\)
where n is number of days in years
n for 6 September 2021:
\(\to n= 31+28+31+30+31+30+31+31+6\\\\\to n= 249\)
\(\to I=Isc(1+0.033 \cos \frac{360 \alpha 249}{365.25})\\\\\to I=1800(1+0.033(+0.037))\\\\\to I =1800(1.001221)\\\\\to I=1802.1978 \ \frac{w}{m^2}\)
A p-type semiconductor has positive charge carriers but is electrically neutral. Similarly an n-type semiconductor has negative charge carriers but is electrically neutral. When they are put in contact (making a diode), statistical forces cause some of the charge carriers to migrate to the opposite semiconductor. The charge carriers move until an E-field is created to stop the migration. This E-field creates a depletion region near the junction where there are no charge carriers. If a forward voltage is applied to the diode, the voltage needs to be large enough to move charge carriers back into the depletion region before and current can flow through the diode. If a backward voltage is applied to the diode, that voltage just increases the depletion region and no significant current flows. Are these statements about the PN junction in a diode true or false
The statements about the PN junction in a diode are true in terms of the movement of charge carriers, the creation of the depletion region, and the behavior under forward and reverse bias conditions
In a PN junction diode, a p-type semiconductor and an n-type semiconductor are brought into contact.
The p-type semiconductor has positive charge carriers (holes) due to the presence of acceptor impurities, while the n-type semiconductor has negative charge carriers (electrons) due to the presence of donor impurities.
Despite the presence of charge carriers, both the p-type and n-type semiconductors are electrically neutral overall.
When the p-type and n-type regions are brought together, charge carriers from each region diffuse across the junction due to statistical forces.
The electrons from the n-type side move towards the p-type side, while the holes from the p-type side move towards the n-type side.
This diffusion process continues until an electric field, known as the built-in potential or depletion region, is established at the junction.
This electric field opposes the further movement of charge carriers and reaches equilibrium, resulting in a depletion region where no charge carriers exist.
If a forward voltage is applied to the diode (positive terminal connected to the p-type side and negative terminal connected to the n-type side), it must be larger than the built-in potential to overcome the opposing electric field of the depletion region.
This forward bias reduces the width of the depletion region, allowing current to flow through the diode.
Electrons flow from the n-type side to the p-type side, recombining with holes and creating a forward current.
Conversely, if a backward voltage (reverse bias) is applied to the diode (positive terminal connected to the n-type side and negative terminal connected to the p-type side), it increases the width of the depletion region, widening the barrier for charge carrier movement.
In this state, only a very small leakage current, called reverse saturation current, flows due to minority carrier drift and thermally generated carriers.
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what are small, flat-bottom boats, such as duck hunting boats, prone to do?
Small, flat-bottom boats, such as duck hunting boats, are prone to capsizing or tipping over. This is because they have a shallow draft and a flat bottom, which makes them unstable in rough or choppy water. In addition, they are often small and lightweight, which can make them more susceptible to wind and waves.
These boats are also prone to taking on water due to their low freeboard (the distance from the waterline to the deck), which can make them vulnerable to flooding in heavy rain or rough seas. It is important to properly distribute weight and to avoid overloading these boats, as excess weight can also increase the risk of capsizing.
For these reasons, it is important to exercise caution when operating small, flat-bottom boats and to always wear a personal flotation device (PFD) or life jacket while on the water. Additionally, it is recommended to take a boater safety course to learn proper boating techniques and safety procedures.
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Small, flat-bottom boats like duck hunting boats are prone to tipping over or capsizing due to their high center of gravity and lack of stability. The concept of buoyancy and stability plays a key role in understanding why these boats are prone to tipping over.
Explanation:Small, flat-bottom boats, such as duck hunting boats, are prone to tipping over or capsizing if they encounter rough water or strong waves. This is due to their center of gravity being high and their lack of stability.
To understand why these boats are prone to tipping over, it is important to consider the concept of buoyancy and stability. When a boat is floating on the water, it experiences an upward force called buoyancy that is equal to the weight of the water displaced by the boat. This buoyant force helps to keep the boat afloat.
However, if the boat is not designed with a low center of gravity or with a wider base, it can become unstable and prone to tipping over. This is especially true when the boat encounters turbulent water or when there is a shift in weight distribution, such as when a person stands up or moves around in the boat.
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Consider a mixing tank with a volume of 4 m3. Glycerinflows into a mixing tank through pipe A with an average velocity of 6 m/s, and oil flow into the tank through pipe B at 3 m/s. Determine the average density of the mixture that flows out through the pipe at C. Assumeuniform mixing of the fluids occurs within the 4 m3 tank.
This question is incomplete, the complete question as well as the missing diagram is uploaded below;
Consider a mixing tank with a volume of 4 m³. Glycerin flows into a mixing tank through pipe A with an average velocity of 6 m/s, and oil flow into the tank through pipe B at 3 m/s. Determine the average density of the mixture that flows out through the pipe at C. Assume uniform mixing of the fluids occurs within the 4 m³ tank.
Take \(p_o\) = 880 kg/m³ and \(p_{glycerol\) = 1260 kg/m³
Answer:
the average density of the mixture that flows out through the pipe at C is 1167.8 kg/m³
Explanation:
Given that;
Inlet velocity of Glycerin, \(V_A\) = 6 m/s
Inlet velocity of oil, \(V_B\) = 3 m/s
Density velocity of glycerin, \(p_{glycerol\) = 1260 kg/m³
Density velocity of glycerin, Take \(p_o\) = 880 kg/m³
Volume of tank V = 4 m
from the diagram;
Diameter of glycerin pipe, \(d_A\) = 100 mm = 0.1 m
Diameter of oil pipe, \(d_B\) = 80 mm = 0.08 m
Diameter of outlet pipe \(d_C\) = 120 mm = 0.12 m
Now, Appling the discharge flow equation;
\(Q_A + Q_B = Q_C\)
\(A_Av_A + A_Bv_B = A_Cv_C\)
π/4 × (\(d_A\))²\(v_A\) + π/4 × (\(d_B\) )²\(v_B\) = π/4 × (\(d_C\))²\(v_C\)
we substitute
π/4 × (0.1 )² × 6 + π/4 × (0.08 )² × 3 = π/4 × (0.12)²\(v_C\)
0.04712 + 0.0150796 = 0.0113097\(v_C\)
0.0621996 = 0.0113097\(v_C\)
\(v_C\) = 0.0621996 / 0.0113097
\(v_C\) = 5.5 m/s
Now we apply the mass flow rate condition
\(m_A + m_B = m_C\)
\(p_{glycerin}A_Av_A + p_0A_Bv_B = pA_Cv_C\)
so we substitute
1260 × π/4 × (0.1 )² × 6 + 880 × π/4 × (0.08 )² × 3 = p × π/4 × (0.12)² × 5.5
1260 × 0.04712 + 880 × 0.0150796 = p × 0.06220335
59.3712 + 13.27 = 0.06220335p
72.6412 = 0.06220335p
p = 72.6412 / 0.06220335
p = 1167.8 kg/m³
Therefore, the average density of the mixture that flows out through the pipe at C is 1167.8 kg/m³
The shape of the wood beam is a rectangle. In a paragraph explain the tradeoffs an engineer would make in selecting a wood with a rectangle shape versus manufactured beams with other stronger but lighter weight shapes.
Answer:
Wood is heavy
Explanation:
A mechanical device rests in a level position on two supports, each 42 inches high, at 60°F. The support at one end is gray cast iron; at the other end, structural steel. What is the greatest amount the device can be out of level due to differences in expansion if the temperature rises to 165°F?
Answer:
0.006174 in
Explanation:
The thermal expansion coefficients I found were ...
5.8×10^-6/°F for gray cast iron
7.2×10^-6/°F for structural steel
Then the difference in expansion dimensions for a 42-inch length will be ...
(42 in)((7.2 -5.8)×10^-6/°F)(165 -60)°F = (42 in)(1.4×10^-6)(105) = 0.006174 in
The difference in thermal expansion over that temperature range will be about 0.006174 inches.
Technician A says that hoods are designed with reinforcements to prevent folding during a collision. Technician B says that some hoods are made from reinforced plastic. Who is right?
Technician A is wrong.
Usually, hoods have what is called "Crush Zones" underneath the panels. The function of the Crush Zone is to prevent the hoods, during a collision, from entering into the passenger space. The crush zones allow the hoods to fold instead.
Technician B is right.
Automobile producers now make use of a hybrid form of hood that consists of fiberglass reinforced with plastic.They are mostly used for trucks that have a low volume of production. The hood is built using a process called Resin Transfer Model (RTM).
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I need to solve for d
Answer:
it's not included
Explanation:
plz exact ur explain
Answer:
si amor
Explanation:
Hoiykñjdnlklbutrk
A horizontal force P is applied to a 130 kN box resting on a 33 incline. The line of action of P passes through the center of gravity of the box. The box is 5m wide x 5m tall, and the coefficient of static friction between the box and the surface is u=0.15. Determine the smallest magnitude of the force P that will cause the box to slip or tip first. Specify what will happen first, slipping or tipping.
Answer:
SECTION LEARNING OBJECTIVES
By the end of this section, you will be able to do the following:
Distinguish between static friction and kinetic friction
Solve problems involving inclined planes
Section Key Terms
kinetic friction static friction
Static Friction and Kinetic Friction
Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.
There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.
Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.
Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.
2.24 Carbon dioxide (CO2) gas in a piston-cylinder assembly undergoes three processes in series that begin and end at the same state (a cycle). Process 1-2: Expansion from state 1 where p1 = 10 bar, V1 = 1 m3, to state 2 where V2 = 4 m3. During the process, pressure and pV1.5 volume are related by = constant. Process 2-3: Constant volume heating to state 3 where p3 = 10 bar. Process 3-1: Constant pressure compression to state 1. Sketch the processes on p –V coordinates and evaluate the work for each process, in kJ. What is the net work for the cycle, in kJ?
Answer:
Explanation:
Given that:
From process 1 → 2
\(P_1 = 10 bar \\ \\ V_1 = 1 m^3 \\ \\ V_2 = 4 m^3\)
\(PV^{1.5} = \ constant\)
\(\gamma = 1.5\)
Process 2 → 3
The volume is constant i.e \(V_2 =V_3 = 4m^3\)
\(P_3 = 10 \ bar\)
Process 3 → 1
P = constant i.e the compression from state 1
Now, to start with 1 → 2
\(P_1V_1^{1.5} = P_2V_2^{1.5}\)
\(P_2 = P_1 (\dfrac{V_1}{V_2})^{1.5}\)
\(P_2 = 10 \times (\dfrac{1}{4})^{1.5}\)
\(P_2 =1.25\)
The work-done for the process 1 → 2 through adiabatic expansion is:
\(W = \dfrac{1}{1-\gamma}[P_2V_2-P_1V_1]\)
We know that 1 bar = \(10^5 \ N/m^2\)
∴
\(W = \dfrac{1}{1-1.5}[1.25 \times 10^5 \times 4- 10 \times 10^5 \times 1]\)
\(W =1000000 \ J\)
\(W_{1 \to 2} = 1000 kJ\)
For process 2 → 3
Since V is constant
Thus:
W = PΔV = 0
\(W_{2 \to 3} = 0\)
For process 3 → 1
W = PΔV
\(W _{3 \to 1} = P_3(V_1-V_3)\)
\(W _{3 \to 1} = 10 \times 10^5 (1-4)\)
\(W _{3 \to 1} = 10 \times 10^5 (-3)\)
\(W _{3 \to 1} = -3 \times 10^6 \ J\)
\(W _{3 \to 1} = -3000 \ kJ\)
The net work-done now for the entire system is :
\(W_{net} = W_{1 \to 2} + W_{2 \to 3 } + W_{ 3 \to 1 }\)
\(W_{net} = (1000 + 0 + (-3000)) \ kJ\)
\(W_{net} =-2000 \ kJ\)
The sketch of the processes on p -V coordinates can be found in the image attached below.
A) The work done for each process are :
Process (1 - 2) = 1000 kJ Process (2 - 3) = 0 kJ process (3 - 1) = -3000 kJB) The net work for the cycle = -2000 kJ
Given Data :
For process (1 -2) For process ( 2 - 3 ) process ( 3 - 1 )
P₁ = 10 bar P₃ = 10 bar constant pressure compression
V₁ = 1 m³ constant volume heating
V₂ = 4 m³
PV\(^{1.5}\) = constant
A) Determine work done for each process
Calculate work done for process (1 - 2)
W₁ ₋ ₂ = \(\frac{P_{1}V_{1} - P_{2}V_{2} }{n -1 }\) * 100
= [ ( 10*1 ) - ( 1.25 * 4 ) ] / 1.5 - 1
= [ 10 - 5 ] / 0.5
= 10 * 100 = 1000 kJ
Calculate work done for process ( 2-3 )
given that there is constant volume heating
W₂₋₃ = 0 kJ
Calculate work done for process ( 3-1)
W₃₋₁ = P ( Δ V ) given that p = constant
= 10 * 100 ( -3 )
= - 3000 kJ
B) The net work for the cycle
W₁ ₋ ₂ + W₂₋₃ + W₃₋₁
= 1000 kJ + 0 kJ + - 3000 kJ
= - 2000 kJ
Hence we can conclude that the ) The work done for each process are :
Process (1 - 2) = 1000 kJ Process (2 - 3) = 0 kJ process (3 - 1) = -3000 kJand The net work for the cycle = -2000 kJ
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Attached below is the P-V sketch of the process
Which part of a machine control unit interacts with the machine tools through electric signals?=]
A machine control unit is the electronic hardware that stores information and controls the machine tools. This unit contains a data processing unit that stores and manipulates data, and a ___________ that interacts with the machine tools through electrical signals.
Answer:
control loop unit
Explanation:
Edmentum/Plato
You wonder why Andy acted in this fashion, and you guess that, because the door was unlocked, he must be afraid that someone broke into their home. Which reading strategy did you use to understand the character's behavior? A. Inferring B. Visualizing C. Summarizing D. Asking questions
Answer:
option A. Inferring
Explanation:
inferring/ inference as reading strategy simply is the process by which one uses what he/she knows to make a guess about what you don't know or reading between the lines. Readers in making inferences uses clues found inside text along with their own views or experiences to help them figure out what is not directly said,thereby causing a personal and memorable text. for one to draw an inference from the passage via reading, Identify if its an Inference Question.inferring involves Trusting the Passage or what you are seeing, then you start Hunting for Clues thereafter you Narrow Down the Choices. and then come to a conclusion or Practice.
When the process is in control but does not meet specification which type of error is it?
When the process is in control but does not meet specification, it is referred to as a special cause error.
What is the term for a process in control but not meeting specification?In statistical process control, a process is considered to be in control when it operates within the defined limits and shows only random variations. However, when a process is in control but does not meet the desired specifications, it indicates the presence of a special cause error.
Special cause errors are attributed to specific factors or events that cause the process to deviate from the expected outcome. These errors are typically unpredictable and require investigation and corrective action to bring the process back within the desired specifications.
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Tech A says that air tools and equipment require a regular application of a lubricating oil to reduce wear and tear. Tech B says that some compressed air systems use an inline water trap that needs to be drained periodically. Who is correct?
Incomplete question. The options read;
A. Tech A
B. Tech B
C. Both A and B
D. Neither A nor B.
Answer:
C. Both A and B
Explanation:
Technician B is correct because the technician highlighted valid reasons why draining the compressed air systems is important.
For example, since this system helps to absorb moisture or oil from storage areas they thus need to be drained periodically in other to allow for more absorption space.
Also, the reasons mentioned by Technician A are of course correct because it is generally believed that the application of lubricants such as oil helps to reduce wear and tear.
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.5-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kPa (gage) in the tank. If the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top.
The discharge rate of the supply of water to the roof top is;
V' = 9.8641 L/s
What is the Discharge Rate?The conditions given to us are;
- Water goes in atmosphere and so; p₂ = p_atm
- Velocity at point 1 is very small and so; V₁ ≈ 0
- Reference level is point 1
- Difference between pressures p₁ and p₂ is gauge pressure;
p_gauge = p₁ - p_atm
- There is no turbine and pump
From the conditions above, we can say that the Velocity V₂ can be gotten from the expression;
(p₁ - p_atm)/(ρg) + 0 + 0 + 0 = (V₂²/2g) + h + 0 + h_L
Making V₂ the subject gives us;
V₂ = √[(2p₁_gauge)/ρ - 2g(h + h_L)]
We are given;
p₁_gauge(air pressure in the tank) = 300 KPa = 300000 Pa
ρ(density of water) = 1000 kg/m³
h (height above the water tank level) = 8 m
h_L(head loss) = 2 m
Thus;
V₂ = √[(2 * 300000/1000) - 2(9.8)(8 + 2)]
V₂ = 20.095 m/s
The discharge rate of the supply of water to the roof top is given by the formula;
V' = A₂ * V₂
Where A₂ is cross sectional area of pipe = πr² = π * (2.5/200)² = 4.90874 * 10⁻⁴ m²
Thus;
V' = 20.95 * 4.90874 * 10⁻⁴
V' = 9.8641 L/s
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A rain gutter is to be constructed from a metal sheet of width 3m by bending up one-third of the sheet on each side through an angle θ. How should θ be chosen so that the gutter will carry the maximum amount of water?.
The area of the gutter is therefore equal to the area of the rectangle plus the area of the triangles.
A = rectangle + 2 * triangle
= 10h + 2 * (1/2 hw)
Using trig work out h and w.
h = 10 sin ?
w = 10 cos ?
A = 10h + hw
= 100sin? + 100sin?cos?
Differentiate the expression (either use the product rule for sin? cos?, or write 100sin?cos? as 50sin2? using the double angle formula)
A = 100sin? + 50sin2?
dA/dt = 100cos? + 100cos2?
For A to be a max or min the derivative must equal zero
100cos? + 100cos2? = 0
cos? + cos2? = 0
Use the double angle formula to write cos2? as 2cos^2 ? - 1
cos? + 2cos^2 ? - 1 = 0
2cos^2 ? + cos? - 1 = 0
This quadratic factorizes:
(2cos? - 1)(cos? + 1) = 0
This means that
cos ? = 1/2 or cos ? = 1
giving:
? = pi/3 or ? = pi
Which means that to achieve the maximum area ? should be pi/3 = 60 degrees
You can check that this is the max by substituting in these values of theta and the two end points (theta = 0, theta = pi), and seeing that pi/3 gives the maximum.
The maximum area is therefore
A = 100sin? + 100sin?cos?
= 100sin(pi/3) + 100sin(pi/3)cos(pi/3)
= 100 sqrt(3) / 2 + 100 sqrt(3)/2 * 1/2
= 100 * 3/2 * sqrt(3) / 2
= 3 * 25 * sqrt(3)
= 75 sqrt(3)
= 129.9...
= 130 cm^3
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Match the following with the type of memory they are describing:
A. RAM
B. ROM
C. PROM
D. EPROM
E. EEPROM
F. FLASH
1. This memory can be programmed by the user instead of at the factory, and is read-only.
2. This memory is not only nonvolatile, but also can be erased by an electrical signal 1 byte at a time.
3. The contents of this memory are programmed one time when manufactured and are nonvolatile
4. This memory can be read from and written to, and is used by microcontrollers for variable data storage.
5. This memory is quite similar to the one described in 2. But allows for faster data access in blocks.
6. The contents of this memory will persist when the power is removed, but only UV can erase them.
Explanation:
1. This memory can be programmed by the user instead of at the factory and is read-only. - A. PROM. (PROGRAMMABLE MEMORY)
2. This memory is not only nonvolatile but also can be erased by an electrical signal 1 byte at a time. - E. EEPROM (ELECTRICALLY ERASABLE PROGRAMMABLE MEMORY)
3. The contents of this memory are programmed one time when manufactured and are nonvolatile. A. RAM
4. This memory can be read from and written to and is used by microcontrollers for variable data storage. B. ROM (RANDOM ACCESS MEMORY)
5. This memory is quite similar to the one described in 2. But allows for faster data access in blocks. F. FLASH
6. The contents of this memory will persist when the power is removed, but only UV can erase them. D. EPROM (ERASABLE PROGRAMMABLE MEMORY)
Write a function which is given an exam mark, and it returns a string -the grade for that mark - according to this scheme: Mark Grade >= 75 First [70-75) Upper Second [60-70)
Second [50-60) T
hird [45-50) F1 Supp [40-45) F2 < 40 F3 The square and round brackets denote closed and open intervals. A closed interval includes the number, and open interval excludes it. So 39. 99999 gets grade F3, but 40 gets grade F2. Assume
Here's an example function in Python language that takes an exam mark as input and returns the corresponding grade based on the grading scheme provided:
What is Function?In computer programming, a function is a self-contained block of code that performs a specific task and can be called or invoked from other parts of a program. Functions are a fundamental concept in programming, and are used to organize code, improve code reusability, and make programs easier to understand and maintain.
def get_grade(mark):
if mark >= 75:
return "First"
elif mark >= 70 and mark < 75:
return "Upper Second"
elif mark >= 60 and mark < 70:
return "Second"
elif mark >= 50 and mark < 60:
return "Third"
elif mark >= 45 and mark < 50:
return "F1 Supp"
elif mark >= 40 and mark < 45:
return "F2"
else:
return "F3"
This function first checks if the mark is greater than or equal to 75, in which case it returns "First". If not, it checks if the mark is between 70 (inclusive) and 75 (exclusive), in which case it returns "Upper Second". The function continues in this way, checking each possible range of marks and returning the appropriate grade.
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Fluid P is water and fluid Q is mercury. If the specific weight of mercury is 13. 6 times that of water and the atmospheric pressure at A when = 15cm and h2 = 30cm? (59. 8KN m-2)
The pressure exerted by water at point A is 4.75 kN/m^2, or 4.75 kPa.
The specific weight of mercury is 13.6 times that of water. Given that the atmospheric pressure at point A is 15 cm and the height difference between points A and B (h2 - h1) is 30 cm, we can determine the pressure difference between the two points.
The specific weight of a fluid is the weight per unit volume of the fluid. In this case, the specific weight of water is denoted by γw, and the specific weight of mercury is denoted by γm. We can express the relationship between these two specific weights as:
γm = 13.6γw
Since the specific weight of a fluid is directly proportional to the pressure it exerts, we can write:
Pm = 13.6Pw
Where Pm is the pressure exerted by mercury and Pw is the pressure exerted by water.
Using the hydrostatic pressure equation, we can relate the pressure difference to the height difference:
Pw = γw * h1
Pm = γm * h2
Substituting the values and known relationships:
Pw = γw * h1 = 13.6 * γw * h2 = 13.6 * Pw
Simplifying the equation:
12.6 * Pw = 59.8 kN/m^2
Dividing both sides by 12.6:
Pw = 4.75 kN/m^2
Therefore, the pressure exerted by water at point A is 4.75 kN/m^2, or 4.75 kPa.
Please note that there is a discrepancy between the given atmospheric pressure (59.8 kN/m^2) and the calculated pressure of water (4.75 kN/m^2). It is possible that there was an error in the provided atmospheric pressure value or in the calculations.
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Describe some typical pairs of entities that you think might be common in business, and describe their relationships, whether many-to-many, one-to-many, many-to-one, or one-to-one. Explain why you think that a particular relationship applies to that pair of entities.
Answer:
Sole Proprietorship, General Partnership , Limited Partnership, corporation
Explanation:
Business in something that an individual or a group of people do for a living and produce products and services that benefits the society and the people. There are several entities that can be common in business. Some common form of entities are :
Sole Proprietorship : One to one
-- here there is only one owner in the business and he maintains and manages the entire business functions under his control.
Limited Partnership : many to one
-- here two or more than two partners establish business and runs it but only one or more is liable to the amount of the investments.
General Partnership : many to many
-- It is a business partnership where all the partners shares the profits, the assets, legal liabilities and financial liabilities, etc.
Corporation : many to one
It is a business entity where a group of individual or a group of companies run a single business which is generally authorized by the state.
Some of the typical types of the entities that one may think to be common in term of the business entities are about the relationships that are held within many to many and one to many.
The one to one relation is Sole Proprietorship, General Partnership, Limited Partnership, corporation.Learn more about the typical pairs of entities.
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Describe with an example how corroded structures can lead to environment pollution?
discuss 7 habits of highly effective people and how important are ethics in today's society
Answer:
Explanation:
The 7 Habits of Highly Effective People, is a book written and first published in 1989. It is a business and self-help book that was written by Stephen Covey. The seven habits include
Being proactive
Starting anything with the end in mind
First things first
Always thinking towards a win-win situation
Seeking initially to understand, then going on to want to be understood
Synergize, and lastly
Growing
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Answer:
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Explanation:
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An ignition coil is an example of a. A. Step-up transformer. B. Step- down transformer. C. Relay.
D. Solenoid.
Answer:
D
Explanation:
An ignition coil is an example of a Solenoid. Thus, the correct option for this question is D.
What is Solenoid?Solenoids may be characterized as a coil of wire that is usually in a cylindrical form and carries a current that acts like a magnet. Due to this, a migratory core is drawn into the coil when a current flows, and that is utilized especially as a switch or control for a mechanical device.
Similarly, an ignition coil also represents an example of a solenoid because it also consists of a coil of wire and carries a current that acts like a magnet. While the concept of the transformers is different as it stores a huge amount of electric current and spread it accordingly.
Therefore, an ignition coil is an example of a Solenoid. Thus, the correct option for this question is D.
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ou are given a dag. how would you check in linear time if the dag includes a hamiltonian path, i.e., a (directed) path that traverses every vertex exactly once? note 1: please provide a detailed description of your solution in plain english or in pseudocode. note 2: you are also allowed to use bfs and dfs as blackbox algorithms (you do not need to explain how it works if you use it) so long as you detail the inputs and outputs to the algorithms as well as any modifications you make.
This algorithm has an O(V+E) time complexity, where V is the number of graph vertices and E is the number of graph edges. This technique runs in polynomial time, which is substantially quicker than the exponential time needed for a thorough search of every conceivable path.
What is the DFS search time complexity for a network with V vertices and E edges?If the entire tree is traversed, the temporal complexity of DFS is O (V) O(V) O(V), where V is the number of nodes. Where V is the number of vertexes and E is the number of edges, the temporal complexity for a graph is O (V + E) O(V + E) O(V+E).
What does time complexity V and E mean?DFS has an O(V + E) time complexity, where V is the number of edges and E is the number of vertices. This is due to the algorithm's worst-case scenario, which involves exploring every vertex and edge exactly once.
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What do you think are 5 of the most important technological inventions in human history? Why?
Which option distinguishes the stage in the product development life cycle described in the following scenario?
A design team generates a list of product features to include in the design of a watch Internet interface.
A. detailed product design
B. product systems design
C. concept development
D. product planning
_____is a slow wireless technology used to connect devices within a radius of about 30 feet
Answer:
Bluetooth is a slow wireless technology used to connect devices within a radius of about 30 feet. While Bluetooth technology is amazing, there are lots of bugs involved with Bluetooth devices, and there is still lots to be discovered in this area of tech.