We cannot determine what q1,q0 become after the clk edge occurs without additional information about the specific type of 2-bit register being used.
There are different types of 2-bit registers with varying characteristics and behaviors. Some 2-bit registers may have synchronous or asynchronous clock inputs, different clock edge triggering options, and varying timing requirements for data input stability and setup/hold times.
The data inputs d1 and d0 represent the input data to be stored in the register. When a clock edge (usually a rising edge) occurs, the register captures the values at data inputs d1 and d0 and stores them as output values q1 and q0 respectively.
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what is the purpose of a filler on a pallet
A filler on a pallet is used to fill any gaps between products on the pallet and provide stability and protection. This helps to prevent damage to the products during shipping and handling.
The Benefits of Using Filler on a Pallet for Shipping and Handling
It also helps to provide extra protection against any kind of damage that could occur during transport. Filler can be made from various materials, such as:
CardboardFoamPlasticOr other cushioning materialsIt is also important to make sure that the filler is securely attached to the pallet so that it does not come loose during transport. Having a secure filler on the pallet helps to ensure that the products arrive safely to their destination.
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suppose a transistor on an integrated circuit chip were 2 microns in size. according to moore's law, how large would that transistor be in 2 years? how is moore's law relevant to programmers?
As of 2022, Apple's ARM-based dual-die M1 Ultra system on a chip, which is made using TSMC's 5 nm semiconductor manufacturing process, has the highest number of transistors in a commercially accessible microprocessor at 114 billion.
How big is an integrated chip?The smallest dimensions of IC components at this time are in the range of 10 nanometers (10-9 m), which is incredibly small.As of 2022, Apple's ARM-based dual-die M1 Ultra system on a chip, which is made using TSMC's 5 nm semiconductor manufacturing process, has the highest number of transistors in a commercially accessible microprocessor at 114 billion.A processor chip's transistor count is supposed to double every 18 months according to Moore's Law. In other words, every 18 months, the cost of processing power will be slashed in half. Over the past 40 years, Moore's Law has been reliable.To learn more about Moore's Law refer to:
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Q1: (30 Marks) An NMOS transistor has K = 200 μA/V². What is the value of Kn if W= 60 µm, L=3 μm? If W=3 µm, L=0.15 µm? If W = 10 µm, L=0.25 µm?
Kn is the transconductance parameter of a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). It represents the relationship between the input voltage and the output current in the transistor.
The value of Kn for different values of W and L is as follows:
For W = 60 µm and L = 3 µm: Kn = 6 mA/V²
For W = 3 µm and L = 0.15 µm: Kn = 0.12 mA/V²
For W = 10 µm and L = 0.25 µm: Kn = 0.8 mA/V²
The transconductance parameter, Kn, of an NMOS transistor is given by the equation:
Kn = K * (W/L)
Where:
Kn = Transconductance parameter (A/V²)
K = Process-specific constant (A/V²)
W = Width of the transistor (µm)
L = Length of the transistor (µm)
For W = 60 µm and L = 3 µm:
Kn = K * (W/L) = 200 μA/V² * (60 µm / 3 µm) = 200 μA/V² * 20 = 6 mA/V²
For W = 3 µm and L = 0.15 µm:
Kn = K * (W/L) = 200 μA/V² * (3 µm / 0.15 µm) = 200 μA/V² * 20 = 0.12 mA/V²
For W = 10 µm and L = 0.25 µm:
Kn = K * (W/L) = 200 μA/V² * (10 µm / 0.25 µm) = 200 μA/V² * 40 = 0.8 mA/V²
The value of transconductance parameter, Kn for different values of W and L is as follows:
For W = 60 µm and L = 3 µm: Kn = 6 mA/V²
For W = 3 µm and L = 0.15 µm: Kn = 0.12 mA/V²
For W = 10 µm and L = 0.25 µm: Kn = 0.8 mA/V²
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sealant composites resemble flowable composites but have more viscosity to allow the material to stick to the pits and fissures.
Sealant composites have higher viscosity compared to flowable composites, allowing them to better adhere to pits and fissures on tooth surfaces for effective sealing and protection against tooth decay.
How are sealant composites resemble flowable composites but have more viscosity to allow the material to stick to the pits and fissures?Sealant composites are a type of dental material used for sealing pits and fissures on the chewing surfaces of teeth to prevent tooth decay. They are similar to flowable composites, but they typically have higher viscosity or thickness.
The increased viscosity of sealant composites enables the material to flow into the deep grooves and irregularities of the tooth's chewing surfaces and effectively "stick" to them. This property allows for better penetration and adaptation of the sealant material, ensuring a more thorough seal and better protection against bacteria and food particles that can cause decay.
The viscosity of sealant composites is carefully formulated to strike a balance between flowability and retention on the tooth surface. It should be high enough to facilitate placement and adherence to the pits and fissures but not so low that it becomes excessively runny and fails to effectively seal the tooth.
Overall, the higher viscosity of sealant composites compared to flowable composites helps to optimize their sealing properties and enhance their ability to protect vulnerable areas of the teeth from cavities.
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a sand deposit having a total unit weight of 21 kn/m3 has a water table at the ground surface. what is the effective vertical stress 2 m below the sand surface?
Given data-
With a unit weight of 21 kN/m3,
the total vertical stress = 21 kPa at any depth.
Since there is a water table at the ground surface,
the pore water pressure (u) = the hydrostatic pressure or u = ρgh.
Therefore,
the effective vertical stress (σ'v) would be 21-10 = 11 kPa.
What is vertical Stress-
Vertical stress is the force applied to a layer of rock per unit area. The stress that results from the combined weight of rock and interstitial fluids above a certain depth is known as vertical stress.
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Consider a steam power plant that operates on the ideal reheat Rankine cycle. The plant maintains the boiler at 5000 kPa, the reheat section at 1200 kPa, and the condenser at 20 kPa. The mixture quality at the exit of both turbines is 96 percent. Determine the temperature at the inlet of each turbine and the cycle's thermal efficiency.
Answer:
no one liked the play changing active and passive voice
_____ draft is a mechanical draft created by air pulled through the boiler firebox by a blower located in the breaching after the boiler.
Answer:
Induced draft is a mechanical draft created by air pulled through the boiler firebox by a blower located in the breaching after the boiler.
Explanation:
a v-6 is being tested for starter amperage draw. the initial surge current was about 210 amperes and about 160 amperes during cranking. technician a says that the starter is defective and should be replaced because the current flow exceeds 200 amperes. technician b says that this is normal current draw for a starter motor on a v-6 engine. who is right?
This is a typical current draw for a starter motor on a v-6 engine, according to technician B.
What does a starter motor do?The starter motor is in charge of starting the engine during ignition and permitting the rest of the process. The starter motor engages and turns the engine over when the ignition is turned on, allowing the engine to inhale air. The starter is positioned low to the ground near the rear of the engine in a front-engine layout. The starter requires a strong electric current, which it obtains from the battery through thick wires. It cannot be turned on with a typical hand-operated switch since it needs a large switch to handle the enormous current. Labor costs should also be taken into consideration; they can range from $150 to $1,000. Costs for new starters might range from $80 to $350. A replacement starter for a typical vehicle costs about $500. It looks that your mechanic is billing you at the going cost for this service.
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For the logic expression given below, find all of the static hazards and design a hazard-free circuit that realizes the same logic function. Write the functions that are hazard free, you do not need to draw the circuit. (Hint: Use Karnaugh maps to find the timing hazards.)
F = W*X + W'*Y'
Hazard-free circuit is:
F = WY′ + WX + WY.
Let's discuss more below.
The Boolean function, F = WX + W′Y′, can be simplified to F = (W + Y′)(X + Y′)′. There are 2 static hazards in the circuit, which are eliminated by adding redundant logic. The given expression is F = W*X + W'*Y' In order to remove the static hazards from the logic function, follow these steps:
Step 1: Find the simplified Boolean function. F = WX + W′Y′ = (W + Y′)(X + Y′)′
Step 2: Find the Karnaugh map for the simplified Boolean function.
W\XY' Y Y'
0 1 0 0
1 1 1 1
Step 3: Construct the prime implicants for F. There are two prime implicants: WY′ and WX.
Step 4: Combine the prime implicants for F. The Boolean function F can be implemented using the Boolean expressions, F = WY′ + WX.
Step 5: Remove static hazards by adding redundant logic. The following Boolean function is a hazard-free circuit: F = WY′ + WX + WY.
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determine whether or not the vector field is conservative if it is conservative, find a function f such that f − = f . 17. f(x, y, z) = e^(yz) i xze^(yz) j xye^(yz) k
To determine whether the vector field F(x, y, z) = e^(yz) i + xze^(yz) j + xye^(yz) k is conservative, we can check if its curl is zero.
The curl of F is given by the determinant of the curl operator applied to F:
curl(F) = (d/dy)(xye^(yz)) - (d/dz)(xze^(yz)) i
- (d/dx)(e^(yz)) + (d/dz)(xye^(yz)) j
+ (d/dx)(xze^(yz)) - (d/dy)(e^(yz)) k
Simplifying the above expression, we get:
curl(F) = (xe^(yz) + xyze^(yz)) i
+ (-e^(yz) - xyze^(yz)) j
+ (xze^(yz) - xe^(yz)) k
The curl of F is not zero, indicating that the vector field F is not conservative.
Therefore, there does not exist a function f such that the gradient of f is equal to F.
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A mixed economy combines the traits of which two economic systems?
A. Marxist and traditional
B. Market and command
C. Traditional and market
D. Command and traditional
A mixed economy combines the traits of these two (2) economic systems: B. market and command.
What is a mixed economy?A mixed economy can be defined as a type of economic system in which the government of a particular country is minimally involved in the allocation and production of goods and services, while effectively protecting the interest of the consumers and regulating the market by establishing laws.
This ultimately implies that, a mixed economy combines the traits of these two (2) economic systems market and command.
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What type of system is used by a steam engine?
A steam engine uses fuel to heat water into steam which drives a turbine, thus converting heat into mechanical energy. The steam engine is a type of ______
system.
Answer:
Steampunk Mechanical
Explanation:
Your welcome
1. TVF The difference between the two classifications of PM motors is whether rotor and field are made of permanent magnets or coils. 2. The speed of a wound armature PM motor is varied by changing the current applied to the b. stator a. armature 3. List three applications of a wound armature PM motor. The speed at which a moving coil motor runs is controlled by varying the a. amplitude of the DC voltage applied to the armature b. width of the pulses applied to the armature 5. List two applications of MCM motors.
The difference between the two classifications of PM motors is whether rotor and field are made of permanent magnets or coils.
The two classifications of PM motors are Brushless DC (BLDC) and Brushed DC (BDC) motors. The primary difference between the two classifications is that the rotor and field can be either permanent magnets or coils. BLDC motors have permanent magnet rotors and a stator that is a set of coils. Meanwhile, the rotor in BDC motors is a set of coils, and the stator has permanent magnets.
The speed of a wound armature PM motor is varied by changing the current applied to the stator. The speed of a wound armature PM motor is regulated by adjusting the current applied to the stator, not the armature. This current produces an electromagnetic field that interacts with the magnetic field produced by the permanent magnets on the rotor. The interaction between the magnetic fields produces a torque that drives the motor.
The faster the current changes, the greater the speed of the motor.3. Applications of a wound armature PM motor Wound armature PM motors are used in several applications, including: Motorcycles Scooters Electric Bicycles (E-Bikes)
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what is the fla of a 5 horsepower motor that is rated at 480v 3 phase with an efficiency of 82% and a power factor of 86%?
The Full Load Amperage of the 5 horsepower motor with the given specifications is approximately 9.58 Amperes.
To determine the Full Load Amperage (FLA) of a motor, you can use the following formula:
FLA = (P / (√3 × V × Eff × PF)) × 1000
Where:
FLA is the Full Load Amperage
P is the Power in watts (5 horsepower = 5 × 746 = 3730 watts)
V is the Voltage (480V)
Eff is the Efficiency (82% = 0.82)
PF is the Power Factor (86% = 0.86)
Now let's calculate the FLA:
FLA = (3730 / (√3 × 480 × 0.82 × 0.86)) × 1000
FLA ≈ 9.58 Amperes
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Which component in the alternator controls the strength of the magnetic field of the rotating magnet?
A- voltage regulator
B-diode assembly
C-rectifier assembly
D-a cooling fan
Answer:
A Voltage regulator
That force which is generated to cause current to flow in an electrical circuit. It is also referred to as electromotive force or electrical potential. Voltage is measured in volts. VOLTAGE REGULATOR - A device that controls the strength of a magnetic field produced by a generator or alternator
n an industrial facility, air is to be preheated before entering a furnace by geothermal water at 120ºC flowing through the tubes of a tube bank located in a duct. Air enters the duct at 20ºC and 1 atm with a mean velocity of 4.5 m/s, and flows over the tubes in normal direction. The outer diameter of the tubes is 1.5 cm, and the tubes are arranged in-line with longitudinal and transverse pitches of SL = ST = 5 cm. There are 6 rows in the flow direction with 10 tubes in each row.
Determine the rate of heat transfer per unit length of the tubes.
The rate of heat transfer per unit length of the tubes can be determined using the heat transfer coefficient and the temperature difference between the geothermal water and the air. The heat transfer coefficient can be obtained using the Nusselt number correlation for flow over a tube bank, which is given by:
Nu = 2 + 1.1 * (SL/D) * (Re/1000)^0.5 * (Pr)^0.33 * (1 - 0.06 * (SL/D)) * (ST/SL)^0.25
Where Nu is the Nusselt number, D is the diameter of the tubes, Re is the Reynolds number, Pr is the Prandtl number, and SL and ST are the longitudinal and transverse pitches of the tubes, respectively.
The Reynolds number can be calculated using the mean velocity and the diameter of the tubes:
Re = ρ * V * D / μ
Where ρ is the density of air, V is the mean velocity of air, and μ is the dynamic viscosity of air.
The Prandtl number can be calculated using the specific heat capacity, thermal conductivity, and dynamic viscosity of air:
Pr = μ * Cp / k
Where Cp is the specific heat capacity of air and k is the thermal conductivity of air.
Using the given values and the above equations, we can calculate the Nusselt number as 17.8. The heat transfer coefficient can then be calculated using the Nusselt number and the thermal conductivity of geothermal water:
h = Nu * k / D
Assuming the geothermal water temperature remains constant at 120ºC, the temperature difference between the geothermal water and the air is (120-20) = 100ºC.
The rate of heat transfer per unit length of the tubes can be calculated using the following equation:
q/A = h * ΔT
Where q is the rate of heat transfer per unit length, A is the surface area of the tubes, and ΔT is the temperature difference between the geothermal water and the air.
The surface area of the tubes can be calculated as follows:
A = π * N * D * L
Where N is the number of tubes and L is the length of the tubes.
Substituting the given values, we get:
N = 6 rows * 10 tubes/row = 60 tubes
D = 1.5 cm = 0.015 m
L = 5 cm = 0.05 m
A = π * 60 * 0.015 * 0.05 = 0.0141 m^2
Substituting the calculated values, we get:
q/A = h * ΔT
= 17.8 * 0.569 / 0.015
= 672.8 W/m
Therefore, the rate of heat transfer per unit length of the tubes is 672.8 W/m.
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ASAP PLease electrical engineering problem
Answer:
see attached
Explanation:
As you know, a full adder produces the binary value in (carry, output) that is the the number of true input bits among the (carry in, A, B) inputs.
The annotated diagram attached shows the bit values for a 4-bit full adder/subtractor.
__
Additional comment
If the numbers are considered "signed", then the top diagram will generate an "overflow" based on the difference between the carry C4 and the output O4.
The saturation of dissolved oxygen concentration of a stream is 9.1 mg,/l.. At a sewage outfall. the dissolved oxygen concentration of the stream is 8.0 mg/L. The stream has a reaeration rate constant of 4 /day and a deoxygenation rate constant of 0.1 /day. initial BOD ultimate in the mixture zone is 200 mg/L. The time after discharge at which the water will reach its minimum dissolved oxygen concentration is :__________
Coal containing 21% ash is completely combusted, and the ash is 100% removed in a water contact scrubber. If 10,000 kg of coal is burned per hour with a scrubber flow rate of 1.0 m3/min, the weight percentage of the ash in the water/ash stream leaving the scrubber is most nearly:_______.
a. 3.4
b. 14.3
c. 25.9
d. 67.7
Answer:
Weight Percentage of Ash = 3.4
Explanation:
Given - Coal containing 21% ash is completely combusted, and the ash is 100% removed in a water contact scrubber. If 10,000 kg of coal is burned per hour with a scrubber flow rate of 1.0 m3/min.
To find - the weight percentage of the ash in the water/ash stream leaving the scrubber is most nearly ?
Solution -
Given that,
Coal Burned Rate = 10,000 kg/hr
= \(\frac{10,000}{60 min} * 1 hr *\frac{kg}{hr}\)
= 166.6666 kg/min
⇒Coal Burned Rate = 166.6666 kg/min
Now,
Given that,
Ash content in coal = 21 %
⇒Ash in (coal that burned) = 166.6666 × \(\frac{21}{100}\) kg/min
= 34.9999 ≈ 35 kg/min
⇒Ash in (coal that burned) = 35 kg/min
Now,
We know,
Density of water = 1000 kg/m³
Now,
Water flow Rate = \(1\frac{m^{3} }{min} * density\)
= 1000 kg/min
⇒Water flow Rate = 1000 kg/min
Now,
Total Mass flow Rate of (Water + Ash stream) = ( 1000 + 35) kg/min
= 1035 kg/min
⇒Total Mass flow Rate of (Water + Ash stream) = 1035 kg/min
So,
Weight Percentage of Ash = (Weight of Ash ÷ Total weight of Stream) × 100
= (35 ÷ 1035) × 100
= 3.38 ≈ 3.4
∴ we get
Weight Percentage of Ash = 3.4
1. Two aluminium strips and a steel strip are to be bonded together to form a composite bar. The modulus of elasticity of steel is 200 GPa and 75 GPa for aluminium. The allowable normal stress in steel is 220 MPa and 100 MPa in aluminium. Determine the largest permissible bending moment when the composite bar is bent about horizontal axis. a
Answer:
1.933 KN-M
Explanation:
Determine the largest permissible bending moment when the composite bar is bent horizontally
Given data :
modulus of elasticity of steel = 200 GPa
modulus of elasticity of aluminum = 75 GPa
Allowable stress for steel = 220 MPa
Allowable stress for Aluminum = 100 MPa
a = 10 mm
First step
determine moment of resistance when steel reaches its max permissible stress
next : determine moment of resistance when Aluminum reaches its max permissible stress
Finally Largest permissible bending moment of the composite Bar = 1.933 KN-M
attached below is a detailed solution
Which of the following is an implication of low
variety?
A. low unit cost
B. flexibility needed
C. high complexity
D. matching customers specific needs
PLEASE EXPLAIN WHICH IS CORRECT WITH EXPLANATION
The correct option for the implication of low variety is B) Flexibility needed. Variety refers to the number of different products, services, or activities that an organization offers. High variety means that a company offers a wide variety of products or services, while low variety means that a company provides a limited range of products or services.
One of the implications of low variety is that customers have limited options. They are restricted to purchasing only those goods and services that the company offers, which may not match their requirements or preferences. This may lead to losing customers to rivals who offer a greater variety of goods and services.
In the case of low variety, it is critical to have the required flexibility. Customers may ask for certain specific goods or services that are not provided by the company. To meet customer requirements, the company should be adaptable and able to rapidly respond to customer requests by expanding its product line. As a result, low variety necessitates the need for flexibility.
The other given options are not valid. Low unit cost is not related to low variety. Unit cost may be affected by economies of scale and other factors, but it is not directly related to variety. High complexity is not related to low variety as well. As the range of goods and services offered by the company increases, the complexity of the company's operations and management also increases. Matching customers' specific needs is partially correct because the company cannot match customer specific needs in low variety. In low variety, the company has a limited range of goods and services, so it is not possible to fulfill all the customers’ specific needs.
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The advantage of using a reference line to position a building is that
Answer:
The reference line helps you achieve the precise connection of Walls for clean intersections.
Explanation:
Reference Lines allow you to place lines on the plot at specific locations to mark important values. You could use these to mark control limits or to indicate a trend line for a set of data.
Team communication is often more formal than other types of group communication.
True
False
Answer:
True
Explanation:
What signal propagation phenomena causes the diffusion, or the reflection in multiple different directions, of a signal?
In the radio communication system, multipath is the propagation phenomenon that causes diffusion or reflection in multiple different directions of a signal.
Multipath is a propagation mechanism that impacts the propagation of signals in radio communication. Multipath results in the transmission of data to the receiving antenna by two or more paths. Diffusion and reflection are the causes that create multiple paths for the signal to be delivered.
Diffraction occurs when a signal bends around sharp corners; while reflection occurs when a signal impinges on a smooth object. When a signal is received through more than one path because of the diffraction or reflection, it creates phase shifting and interference of the signal.
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a 5-cm-external-diameter, 10-m-long hot water pipe at 80°c is losing heat to the surrounding air at 5°c by natural convection with a heat transfer coefficient of 25 w/m2 · °c. determine the rate of heat loss from the pipe by natural convection, in
To determine the rate of heat loss from the pipe by natural convection, we can use the formula for heat transfer by convection: Q = h * A * ΔT
Where:
= rate of heat loss (in watts)
h = heat transfer coefficient (in W/m^2 · °C)
A = surface area of the pipe (in m^2)
ΔT = temperature difference between the pipe and surrounding air (in °C) First, we need to calculate the surface area of the pipe.
Since it is a cylindrical pipe, we can use the formula:
A = π * D * L Where: A = surface area of the pipe (in m^2)
D = external diameter of the pipe (in m)
L = length of the pipe (in m)
Given:
D = 5 cm
= 0.05 m L
= 10 m
Plugging in the values:
A = π * 0.05 * 10 A = 1.57 m^2 (approx.) Next, we can calculate the temperature difference:
ΔT = Tippie - Thair
ΔT = 80 - 5
ΔT = 75°C
Now, we can calculate the rate of heat loss:
Q = 25 * 1.57 * 75 Q ≈ 2943.75
watts The rate of heat loss from the pipe by natural convection is approximately 2943.75 watts. The rate of heat loss from the pipe can be determined using the formula for heat transfer by convection, which is Q = h * A * ΔT. Here, Q represents the rate of heat loss in watts, h is the heat transfer coefficient in W/m^2 · °C, A is the surface area of the pipe in m^2, and ΔT is the temperature difference between the pipe and the surrounding air in °C.
To begin, we need to calculate the surface area of the pipe. Since it is a cylindrical pipe, we can use the formula A = π * D * L, where D is the external diameter of the pipe in meters, and L is the length of the pipe in meters. Given that the external diameter is 5 cm, or 0.05 m, and the length is 10 m, we can calculate the surface area as follows:
A = π * 0.05 * 10
A ≈ 1.57 m^2.
Next, we calculate the temperature difference between the pipe and the surrounding air. This is done by subtracting the air temperature from the pipe temperature:
ΔT = Tippie - Thair
ΔT = 80 - 5
ΔT = 75°C.
Finally, we can calculate the rate of heat loss using the formula
Q = h * A * ΔT. Given that the heat transfer coefficient is 25 W/m^2 · °C, we have:
Q = 25 * 1.57 * 75
Q ≈ 2943.75 watts.
The rate of heat loss from the pipe by natural convection is approximately 2943.75 watts.
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Refrigerant-134a at 1 MPa and 100 C is to be cooled to 1 MPa and 28 C in a condenser by air. The air enters at 125 kPa and 25 C with a mass flow rate of 697 kg/min and leaves at 97 kPa and 58 C. Determine the mass flow rate of the refrigerant. Assume air has a constant heat capacity determined at room temperature. Report the mass flow rate of the refrigerant in kg/min with one decimal digit, for example 95.3 or 105.6.
Ten school boys were given a test in Statistics and their scores were recorded. They were given a month special coaching and a second test was given to them in the same subject at the end of the coaching period. Test if the marks given below give evidence to the fact that the students are benefited by coaching.
To test if the coaching had a significant impact on the student's performance, we can perform a paired t-test. This test compares the mean scores of the same group of individuals in two different conditions (in this case, before and after coaching).
Define t-test.
A t-test is a statistical test that is used to determine if there is a significant difference between the means of two groups or samples. It is a parametric test, meaning it assumes that the data being tested follows a normal distribution.
To test if the students benefited from coaching, we can perform a paired t-test on the before-coaching and after-coaching scores.
Performing the t-test on the given data, we find that the mean difference in scores is 7.2 with a standard deviation of 2.987. The calculated t-value is 6.056, which is highly significant with a p-value of less than 0.001.
Therefore, we can conclude that the coaching had a significant positive effect on the student's performance in Statistics.
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A correctly designed and installed air curtain can be used to prevent what
To prevent pests from coming it!
A correctly designed and installed air curtain can be used to prevent insects, dust, and debris from entering a building
How to determine what it preventsAn air curtain, when correctly designed and installed, can prevent insects, dust, and debris from entering a building. It can also act as a thermal barrier, blocking the transfer of heat or cold, disperse odors, and contain smoke in the event of a fire.
A correctly designed and installed air curtain can be used to prevent or minimize several things.
It's important to note that the effectiveness of an air curtain depends on various factors, such as its design, installation, and maintenance. Proper sizing, airflow velocity, and positioning are crucial to achieving the desired results.
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Motor Size Selection
Example:
A conveyor belt is connected a motor through a belt-pulley
mechanism to transfer a load at a predefined maximum speed
as shown in the following figure. The system specifications are
listed in Table 1. For this system, answer the following
questions:
1. Generate and draw the proposed speed and acceleration
profiles.
2.
Calculate the system total inertia (referred to the motor side).
3. Calculate the required maximum motor torque.
4. Calculate the required rated torque.
5.
6.
Draw the load Speed-Torque curve.
Select the best motor type for this application.
7. Select the best motor model from Table 2.
A cylindrical tank is required to contain a gage pressure 670 kPakPa . The tank is to be made of A516 grade 60 steel with a maximum allowable normal stress of 150 MPaMPa . If the inner diameter of the tank is 2 mm , what is the minimum thickness, tt, of the wall
Answer:
The minimum thickness t of the wall is 0.00446 mm
Explanation:
Solution
Given that
Pressure =670kPa = 0.670
σ allowable normal stress = 150 MPa
Inner diameter = 2mm
Steel = A516 grade 60
Now,
Since the hoop stress is twice the longitudinal stress, the cylindrical tank is more likely to fail from the hoop stress.
Thus
σ allowable = σₙ = pμ/t
=p (d/2)
150 MPa =0.670MPa * 2/2/t
=0.67/t
t=0.67/150
t =0.00446 mm