The absolute pressure on the Bathyscaph at the dept of 7.0mi is 1.1256x10⁸ Pa.
What is absolute pressure?Absolute pressure is defined as the pressure of having no material inside a space, or a complete vacuum. Absolute pressure measurements employ this absolute zero as a reference point. The measurement of barometric pressure is the greatest example of an absolute referenced pressure.
To arrive at the above solution, we are given:
Depth of ocean taken into account (D) = 7.0 miDiameter of porthole (d) = 15 cm = 15/100 = 0.15 m1 mile = 1.6 km = 1600 mThe absolute pressure at depth of 7 miles:
Pabs = Atmospheric pressure + Guage pressure
= 1.013 x10⁵ N/m² + Density of sea water x g x depth
= 1.013 x10⁵ + ( 1023.6 x 9.81 x 7x1.6x1000)
= 1.013 x10⁵ + 1124.64979 x10⁵
= 1.1256 x10⁸ N/m^2
= 1.1256x10⁸ Pa
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Full Question:
Engineers have developed a bathyscaph that can reach ocean depths of 7.0 mi. [1 mile = 1.6 km].
What is the absolute pressure at this depth?
Two vehicles collided head on while traveling on a curve tangent with a 3% grade. Vehicle V1 skidded 195 feet downhill before colliding with vehicle V2. Vehicle V2 skidded 130 feet. The police report estimates that the speed of both vehicles at impact was 25 mph, based on vehicle deformation. Assume a coefficient of friction of 0.48. What is V1 speed at the beginning of the skid?
Answer:
Speed V1 at the beginning of the skid = 57.075 mph
Explanation:
Calculate the V1 speed at the beginning of the skid
V1 ( speed before brake was applied ) = ?
distance travelled by Vehicle 1 = 195 ft
curve tangent for vehicle 1 = - 3% = - 0.03
coefficient of friction = 0.48
speed at Impact = 25 mph
To determine the V1 speed at the beginning of the skid we have to apply AASTHO
d1 = \(( \frac{VA^{2} - VA^{12} }{30(F+N)} )\)
195 = \((\frac{VA^2- 25^2}{30(0.48-0.03)} )\)
Hence : VA = 57.075 mph
what is the fatigue ratio? if the tensile strength sts of an alloy is 900 mpa, what, roughly, would you expect its endurance limit se to be?
The Endurance limit or Fatigue limit of a metal alloy is 360 mpa.
What is Fatigue Ratio?
The ratio between tensile strength and fatigue strength or fatigue limit Numerous materials can have their fatigue qualities estimated using data from tension testing using the fatigue ratio.
What is the Fatigue limit?
The stress level below which an unlimited number of loading cycles can be given to a material without inducing fatigue failure is known as the fatigue limit or endurance limit.
Given:
Tensile strength of an alloy = 900mpa
The ratio of minimum to maximal fatigue stress is called fatigue stress or R, \(R=\frac{σmin}{σmax }\).
There are a certain number of load cycles per second or stress frequency f. With each stress parameter, a material's vulnerability to fatigue damage and failure grows.
Therefore, the endurance limit is 360 mpa.
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When insulation is being installed at an elevated location, one common safety hazard is
Answer:
A big hazard is falling, whether it be people or equipment. This is why OSHA requires that workers wear hard hats when doing certain jobs.
given a list of integers, write python code to separate only the squares of the odd numbers from the list my list. my list
python code is:
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9]squares_of_odd_numbers = [x*x for x in my_list if x % 2 != 0]print(squares_of_odd_numbers)How to write python code?Python code that separates only the squares of odd numbers from a given list of integers my_list:
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9]squares_of_odd_numbers = [x*x for x in my_list if x % 2 != 0]print(squares_of_odd_numbers)Output:
[1, 9, 25, 49, 81]In the code above, we use a list comprehension to filter only the odd numbers from the list my_list using the condition x % 2 != 0.
Then, we use the map() function to map the square of each odd number using the expression x*x.
Finally, we assign the result to a new list called squares_of_odd_numbers.
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Multiple Choice
Which option identifies why the engineer should choose the reverse engineering process in the following scenario?
A client has contacted an engineer to determine why a product is not selling. It is up to the engineer to gather information and reconfigure the product by using the most strategic process.
The client wants a functional analysis of the product.
There will be changes to the existing product.
The client will be comparing the product to its competition.
The client wants a brand new product designed
Answer:
2nd one
Explanation:
on edge 21
The option that identifies the engineer should choose the reverse engineering process in the following scenario is there will be changes to the existing product. The correct option is b.
What is reverse engineering?The distinction between the reverse engineering process and the engineering design process is quite slight. The engineering design process is a method that requires months of planning and design in order to provide a blueprint for a specific project.
The fundamental skill of learning to make something by working backward from an existing inspiration for your project is called reverse engineering.
Three contrasts are that the engineering design process is based more on mental and written learning than it is on physical learning (unlike the reverse engineering process).
Therefore, the correct option is b, There will be changes to the existing product.
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what is time dependent
Answer:
Adjective. time-dependent (not comparable) (mathematics, physics) Determined by the value of a variable representing time.
Explanation:
Plz mark brainliest thanks
Answer: Adjective. time-dependent (not comparable) (mathematics, physics) Determined by the value of a variable representing time
What ensures the correct phasing of the steering column U-joints when being reassembled after servicing?
Select one:
O a. Marking steering wheel position
O b. Numbering the U-joints
O c. Match marking the steering shafts
O d. Marking miter box position
The process of phasing involves parallel alignment of the universal joint yokes on the drive shaft's two ends (also known as the double u-joint). Unless the joints are...
What do you call a double u-joint?A double universal joint with a length-adjustable middle part is a telescopic drive shaft. commonly known by the names driving shaft or cardan shaft. There are two varieties of U-joints: ball and trunnion and cross and roller types. Most often utilized, the cross and roller design allows the driving shaft to bend. The drive shaft can flex and can move both backwards and forwards with the ball and trunnion type, which is less usually utilized. With two joints at one end (usually the transfer case) and one joint at the other, certain drivelines use a "double cardan," or constant velocity (CV). As a result of the two joints splitting the angle, more
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norton's theorem and thevenin's theorem related linearity property
Norton's theorem in regards to linearity property is known to be one that employ the use of a current source while the Thevenin's theorem is known to be one that employ the use of a voltage source.
Thevenin's theorem make use of a resistor in a kind of series, but Norton's theorem is known to use a resister set in a kind of parallel way in line with the source.
What is Norton's Theorem?
Norton's Theorem is known to be a law that states that one can be able to simplify any form of linear circuit, no matter how difficult or hard that it may be, to an equivalent circuit through the use of only one current source and also the use of a parallel resistance linked to a load.
Note that, Norton's theorem in regards to linearity property is known to be one that employ the use of a current source while the Thevenin's theorem is known to be one that employ the use of a voltage source.
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Airtight plugs are installed in the ends of large sizes of PVC conduit during bending to_____________.
Airtight plugs are installed in the ends of large sizes of PVC conduit before bending to A. prevent the conduit from collapsing when heated.
What is Airtight plugs?Airtight plugs is necessary in the PVC conduit so as to be able to avoid the collapse of conduit.
In this case, Airtight plugs are installed in the ends of large sizes of PVC conduit before bending to A. prevent the conduit from collapsing when heated.
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A piece of coaxial cable has 75ohms Characteristics impedance and a nominal capacitance of 69pF/m. what is its inductance per meter ? If the diameter of the inner conductor is 0.584mm, and the dielectric constant of the insulation is 2.23, what is the outer diameter of the conductor ?
Answer:
A) L = 0.388 μm
B) D = 3.78 mm
Explanation:
We are given;
Characteristics impedance; Z_o = 75 ohms
Nominal capacitance; C = 69pF/m = 69 × 10^(-12) F/m
dielectric constant; k = 2.23
Inner diameter of conductor; d = 0.584 mm
A) Now formula for Characteristics impedance is given as;
Z_o = √(L/C)
Where L is the inductance per metre.
Making L the subject, we have;
L = (Z_o)²C
L = 75² × 69 × 10^(-12)
L = 0.388 × 10^(-6) m
L = 0.388 μm
B) To get the outer diameter, we will use the formula;
Z_o = (138/√k) log(D/d)
Where;
D is outer diameter.
Thus, Plugging in the relevant values;
75 = (138/√2.23) × log (D/0.584)
log (D/0.584) = 0.81158611538
(D/0.584) = 10^(0.81158611538)
D/0.584 = 6.48016576435
D = 6.48016576435 × 0.584
D = 3.78 mm
The best way to check the efficiency of individual cylinders is:________.
Answer:
To run. The machine one at a time
Explanation:
Determine whether each graph has an Euler path and whether it has an Euler circuit. Write "Yes" or "No" in each blank space. Write the degree of each vertex. Write the degree of each vertex at each of the vertices.
Without specific details or descriptions of the graphs, it is not possible to determine whether each graph has an Euler path or an Euler circuit, or to provide the degree of each vertex.
Is it possible to determine the presence of an Euler path or an Euler circuit in a graph without knowing its specific details or descriptions?Determining the presence of an Euler path or an Euler circuit in a graph requires knowledge about the specific details and connections of the graph.
This includes information about the number of vertices, edges, and the connections between them.
Without this information, it is not possible to determine whether an Euler path or an Euler circuit exists.
Additionally, determining the degree of each vertex requires knowledge of the specific graph structure.
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4.)is the circuit shown in (a) below combinational logic or sequential logic? explain in a simple fashion what the relationship is between the inputs and outputs. what would you call this circuit? repeat for the circuit shown in (b).
(a) The combinational logic circuit depicted in (a) is a circuit. One output LED and two input switches make up the device. Only when both input switches are closed or turned on does the output LED turn on.
Combinational logic is a subset of digital logic that is used in electronics and computer science to create circuits where the output is fully reliant on the input variables. The logical combinations of the input variables are the outputs in combinational logic. Gates like AND, OR, and NOT carry out the logical processes. Combinational logic's key benefit is that it is straightforward to build and simple to comprehend. Digital electronics frequently employs combinational circuits for tasks including data processing, signal processing, and mathematical computations. Adders, multiplexers, and demultiplexers are a few typical examples of combinational logic circuits.
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Machined parts can be classified as rotational or nonrotational. Which two of the following are examples of operations that create nonrotational geometries: (a) boring, (b) drilling, (c) milling, (d) planing, and (e) turning
Machined parts can be classified as rotational or nonrotational. The two examples of operations that create nonrotational geometries are option (a) boring and option (d) planing.
Boring is a machining process that enlarges an existing hole to a desired diameter, and the resulting geometry is a straight cylindrical shape with parallel walls. Planing, on the other hand, is a process that produces flat surfaces by removing material in a linear motion. The resulting geometry is a flat surface with straight edges.
Drilling and turning are examples of operations that create rotational geometries. Drilling involves creating a hole by removing material in a rotary motion, resulting in a cylindrical shape with a circular cross-section. Turning, on the other hand, is a process that creates round geometries by removing material with a rotating cutting tool.
Milling is an operation that can create both rotational and nonrotational geometries, depending on the type of milling process used. Some milling processes involve rotating the workpiece, resulting in rotational geometries, while others involve moving the cutting tool in a linear motion, resulting in nonrotational geometries.
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If you deposit $ 1000 per month into an investment account that pays interest at a rate of 9% per year compounded quarterly.how much will be in your account at the end of 5 years ?assume no interpèriod compounding
Answer:
5,465.4165939453
Explanation:
formula
A=P(1+r/n)^n(t)
p=1000
r=0.09
n=4
t=5
is the term used when a vehicle body is mounted on a rigid frame or chassis.
Select one:
Oa. Frame-to-body
Ob. Body-on-frame
Oc. Body-on-chassis
Od. Frame-to-chassis
Answer:
B. body on frame
Explanation:
Design a filter that has infinite DC gain, a gain of one from 1Hz to 100 Hz and filters (1storder) any signals above 100 Hz.a) Sketch the bode plotb) Sketch the s-planec) write the transfer function of the filterd) write the differential equatione) write out the unforced transient responsef) write out the frequency response
Answer:
Attached below are the sketches
answer :
c) G(s) = 100 / ( s + 100 )
d) y'(t) + 100Y(s) = 100 X(s)
e) g(t) = e^-100t u(t)
Explanation:
a) Sketch the bode plot
The filter here is a low pass filter
b) Sketch the s-plane
attached below. pole ( s ) is at 100
c) write the transfer function of the filter
Transfer function ; G(s) = 100 / ( s + 100 )
d) write the differential equation
Y(s) / X(s) = 100 / s + 100
Y(s) [ s + 100 ] = 100 X(s)
= sY(s) + 100Y = 100 X(s)
∴ differential equation = y'(t) + 100Y(s) = 100 X(s)
e) write out the unforced transient response
g(t) = e^-100t u(t)
f) write out the frequency response
attached below
A light bulb has a normally distributed light output with mean 5,000 end foot-candles and
standard deviation of 50 end foot-candles. Find a lower specification limit such that only
0.5% of the bulbs will not exceed this limit.
The specification limit where 0.5% of the bulbs will not exceed the limit of the standard deviation is given as: 4,871.50. This is computed using the z-table/ z-score.
What is a specification limit?Customer specification limits are the objectives set for a product or process based on customer or market performance; the Voice of the Customer is frequently used as input for customer specification limits. In other words, we measure the desired outcome of the metric.
To compute the above we say:
From the z-table, a z-score of -2.57 cuts off 0.005 in the left tail;
Given the formula for z-score = (x-μ)/σ
Where
Z = Standard Score
x = observed value
μ = Mean of the sample; and
σ = Standard deviation of the sample
We have:
(x-5000)/50 = -2.57
Solving for x we get:
x-5000=-128.5
x = -128.5+5000
x = 4871.50
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The following dictionary stores WSU's college football game scores for the past 4 years as a list of tuples. The first element of each tuple is the year and the second element is the list of games in that year. Each game is a tuple including the opponent team's name and the score tuple i.e., (WSU's score, opponent team's score). Wsu_games =[ (2019, [("NMSU", (58,7)), ("UNCO", (59,17)), ("HOU", (31,24)),( "UCLA", (63,67)), ( "UTAH", (13,38)), ("ASU", (34,38)), ("COLO", (41,10)), ("ORE", (35,37)), ("CAL", (20,33)), ("STAN", (49,22)), ("ORST", (54,53)), ("WASH", (13,31)), ("AFA", (21,31))]), (2020, [("ORST", (38,28)), ("ORE", (29,43)), ("USC", (13,38)), ("UTAH", (28,45))]), (2021, [("USU", (23,26)), ("PORT ST.", (44,24)), ("USC", (14,45)), ("UTAH", (13, 24)), ( "CAL", (21,6)), ("ORST", (31,24)), ("STAN", (34,31)), ("BYU", (19, 21)), ( "ASU", (34,21)), ("ORE", (24,38)), ("ARIZ", (44,18)), ("WASH", (40,13)), ( "CMU", (21,24))] ) ] Assume you would like to find the number of games WSU won each year. Write a function "wins_by_year" that takes the WSU game data as input, and it returns a list of tuples where each tuple includes the year and the number wins (of WSU team) in that year. The type of the wins_by_year function should be compatible with the following: wins_by_year : : (Num b, Ord a1 ⇒[(a2,[(a3,(a1,a1))])]→[(a2,b)] Example: > wins_by_year wsu_games [(2019,6),(2020,1),(2021,7)]
Explanation:
Here is a possible implementation of the "wins_by_year" function:
python
def wins_by_year(wsu_games):
result = []
for year, games in wsu_games:
num_wins = sum(1 for _, scores in games if scores[0] > scores[1])
result.append((year, num_wins))
return result
The function loops over the list of tuples, and for each year and list of games, it calculates the number of games that WSU won by counting the number of times that the first element of the score tuple (which corresponds to WSU's score) is greater than the second element (which corresponds to the opponent's score). The function uses a generator expression with sum to count the number of wins, and appends a tuple with the year and number of wins to the result list. Finally, the function returns the result list.
Example usage:
python
wsu_games = [(2019, [("NMSU", (58,7)), ("UNCO", (59,17)), ("HOU", (31,24)), ("UCLA", (63,67)), ("UTAH", (13,38)), ("ASU", (34,38)), ("COLO", (41,10)), ("ORE", (35,37)), ("CAL", (20,33)), ("STAN", (49,22)), ("ORST", (54,53)), ("WASH", (13,31)), ("AFA", (21,31))]),
(2020, [("ORST", (38,28)), ("ORE", (29,43)), ("USC", (13,38)), ("UTAH", (28,45))]),
(2021, [("USU", (23,26)), ("PORT ST.", (44,24)), ("USC", (14,45)), ("UTAH", (13, 24)), ("CAL", (21,6)), ("ORST", (31,24)), ("STAN", (34,31)), ("BYU", (19, 21)), ("ASU", (34,21)), ("ORE", (24,38)), ("ARIZ", (44,18)), ("WASH", (40,13)), ("CMU", (21,24))])]
print(wins_by_year(wsu_games))
# Output: [(2019, 6), (2020, 1), (2021, 7)]
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1. An air standard cycle is executed within a closed piston-cylinder system and consists of three processes as follows:1-2 = constant heat addition from 100 kPa and 27∘C to 700 kPa 2-3 Isothermal expansion until V3 = 7v23-1 P = constant heat rejection to the initial state2. Assume air has constant properties with cv = 0.718 kJ/kg K, cp = 1.005 kJ/kg K, R = 0.287 kJ/kg K, and k = 1.4.(a) Sketch the P- and T-s diagrams for the cycle.(b) Determine the ratio of the compression work to the expansion work (the back work ratio).(c) Determine the cycle thermal efficiency.
Answer:
Explanation: Here it is: 67 Hope that helps! :)
Solve the heat equation
∂/∂=∇^2−u
inside a cylinder of radius a and height H, with the initial condition
(,theta,z,0)=(,z),
and the boundary conditions
∂/∂z(,theta,0,)=0, ∂/∂z(,theta,H,)=0, ∂/∂(,theta,z,)=0.
The solution to the heat equation inside a cylinder with the given initial and boundary conditions is given by the expression:
u(r, θ, z, t) = ∑ n=1∞ Bn J₀(nπr/a) e^(−n²π²t/H²) cos(nπz/H), where Bn = 2/H ∫₀ⁿH f(r, z) J₀(nπr/a) dz.
To solve the heat equation inside a cylinder of radius a and height H, with the given initial condition and boundary conditions, we follow these steps:
Express the Laplace operator in cylindrical coordinates, which gives us the equation ∇²u = 1/r * ∂/∂r(r * ∂/∂r u) + 1/r² * ∂²/∂θ² u + ∂²/∂z² u.
Assume a separable solution in the form u(r,θ,z,t) = R(r)Θ(θ)Z(z)T(t).
Substitute the separable solution into the heat equation, resulting in T' = k [Θ² / R + ∇²z / Z] - f(x, y, z, t), where k is a separation constant assumed to be negative (k = -λ²).
Use the initial condition to find R(r) = A₀, 0 ≤ r ≤ a, where A₀ is a constant.
Apply the boundary condition ∂/∂r (a,θ,z,t) = 0, which leads to an equation involving Bessel functions. Solve this equation to obtain the eigenvalues λ = α₀, α₁, α₂, ... and the corresponding eigenfunctions J₀(αn r/a), where αn is the n-th root of J₀(αn) = 0.
The general solution is given by u(r,θ,z,t) = ∑ An J₀(αn r/a) e^(−αn²t)cos(αn z/H), where An is the Fourier coefficient and αn are the eigenvalues.
Substituting the initial condition and applying the boundary condition, we determine that An = 0 for n = 0 and sin(αn H) = 0. The eigenvalues are αn = nπ/H, and the corresponding eigenfunctions are J₀(αn r/a).
Finally, the solution to the heat equation inside the cylinder is given by u(r,θ,z,t) = ∑ n=1∞ Bn J₀(nπr/a) e^(−n²π²t/H²)cos(nπz/H), where Bn is the Fourier coefficient calculated as Bn = 2/H ∫₀ⁿH f(r, z) J₀(nπr/a) dz.
In summary, the solution to the heat equation inside a cylinder of radius a and height H, with the given initial and boundary conditions, is represented by the above expression.
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A(n) _____ is done to test each individual component (often a program) to ensure that it is as defect-free as possible.
Answer:
Unit test
Explanation:
Defintion: A test of each individual component (often a program) to ensure that it is as defect-free as possible.
Check all items below that can be found in a safety data sheet
A safety data sheet (SDS) is a document that provides information on the potential hazards and safe handling procedures of a substance or product.
It typically includes the following information:Identification of the substance or mixture and of the supplier
Hazards identification
Composition/information on ingredients
First-aid measures
Firefighting measures
Accidental release measures
Handling and storage
Exposure controls/personal protection
Physical and chemical properties
Stability and reactivity
Toxicological information
Ecological information
Disposal considerations
Transport information
Regulatory information
Other information, including date of preparation or last revision.
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An isolated charged soap bubble of radius R 0 = 6. 95 cm is at a potential of V 0 = 307. 0 volts. If the bubble shrinks to a radius that is 39. 0 % of the initial radius, by how much does its electrostatic potential energy U change? Assume that the charge on the bubble is spread evenly over the surface, and that the total charge on the bubble remains constant
The electrostatic potential energy U changes by -0.39307 J.
The electrostatic potential energy of a system is given by the equation U = 1/2 * QV, where Q is the total charge on the system and V is the potential difference.
If the radius of the bubble shrinks by 39%, the potential difference will also shrink by the same amount, thus changing the potential energy. To calculate this change, we can use the equation: U = 1/2 * QV_initial - 1/2 * QV_final.
Since Q is constant, the change in potential energy is simply the change in V. Hence, U = 1/2 * Q(V_initial - (V_initial * 0.39)) = -0.39307 J
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RD O Vo+ Vo- Мa М Vi- Vit Vc VB4 M4 Vc, VB M3 VB3 VB Fig. P1 All transistors are in the saturation region; the transconductances of Mı, M2, M3 and M4 are gml gm2, gm3 and gm4, respectively; the output resistances of Mi, M2, M3 and M4 are rol, To2, To3, and ro4 respectively. Also, gml = gm2 and rol = ro2 >> RD. The tail current source of this differential amplifier is implemented in the cascode structure (M3 and M4), and the load resistors have a very small amount of mismatch, ARD (<< RD). Hint: the output impedance the current source should be the same as the output impedance of a cascode amplifier (a) Derive the expression of the differential-mode gain, Ad = (vo+ - Vo-)((vi+ - Vi.) (b) Derive the expression of the common-mode gain, Ac = \Vo+ - Vo-V/\vel. (c) Derive the expression of the common-mode rejection ratio, CMRR differential amplifier AaAcl for this
A Cascode amplifier consists of a common-emitter stage loaded by the emitter of a common-base stage.
Explain about the Cascode amplifier?The benefits of folded OTA In order to get high gain from the circuits, it offers high output impedance. Large gain, great bandwidth, and high swing are made possible.
Wide bandwidth and a somewhat high input impedance are also characteristics of the cascode amplifier architecture. The common-base and common-emitter of the cascode amplifier are merged. Short circuits serve as the equivalent of batteries and capacitors in an AC circuit.
When using a cascode amplifier, the common emitter is substantially loaded by the common-base stage, which lowers the gain to unity and increases bandwidth, resulting in a constant gain-bandwidth product.
In place of a pentode, they suggested a cascade of two triodes, the first with a shared cathode arrangement and the second with a common grid, hence the term is likely an acronym for "cascaded triode amplifier possessing characteristics comparable to, but less noisy than, a single pent)ode."
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you want to take apart a couple of brass parts held together by steel screws, but the screws are stuck. what should you do?
When you want to remove a stuck screw, there are some things you can try: you should be cautious when working with metals because they can quickly corrode so, to remove the screw, you should use the right equipment and tools.
The following are some of the approaches you can use to remove the stuck screw: Using a rubber band: A rubber band can be wrapped over the screw head to get a good grip, then try unscrewing the screw while applying pressure in a counterclockwise direction with your screwdriver.Using heat: Heat the area surrounding the screw with a hairdryer or heat gun if possible, being careful not to harm the surrounding area. A heat gun is best because it produces a lot of heat. If the screw is rusted, heating it causes it to expand and break the bond that is keeping it locked. After it cools, the screw can be loosened with a screwdriver.
Try penetrating oil: WD-40 or Liquid Wrench can be used to remove the screw. Spray the penetrant around the screw head and allow it to sit for 30-60 minutes before attempting to unscrew it. The oil will break down any corrosion and loosen the bond between the screw and its surrounding area.Using pliers or vice-grips: If the screw head is protruding a bit, you might be able to grip it with a pair of pliers and unscrew it by turning it counterclockwise.
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Which phase involves research to determine exactly what the client expects?
brainstorming
identifying the need
preventive maintenance
building a model
The phase identifying the need involves research to determine exactly what the client expects. The correct option is B.
What is research?
Research is a systematic inquiry process that includes data gathering, documentation of important information, analysis, and interpretation of that data and information.
These all are in accordance with appropriate procedures established by particular academic and professional disciplines.
Action-informing research is its goal. As a result, your study should attempt to place its findings in the perspective of the wider body of knowledge. In order to develop knowledge that is usable outside of the research setting, research must constantly be of the highest calibre.
Research is done during the step of determining the need to ascertain the precise expectations of the client.
Thus, the correct option is B.
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A site is underlain by a soil that has a unit weight of 118 lb/ft3. From laboratory shear strength tests that closely simulated the field conditions, the total stress parameters were measured to be C total = 250 lb/ft2 and φ total = 29°. Estimate the shear strength on a horizontal plane at a depth of 12 ft below the ground surface at this site in lbs/ sq ft
Answer: the shear strength at a depth of 12 ft is 1034.9015 lb/ft²
Explanation:
Given that;
Weight of soil r = 118 lb/ft³
stress parameter C = 250 lb/ft²
φ total = 29°
depth Z = 12 ft
The shear strength on a horizontal plane at a depth of 12ft
ζ = C + δtanφ
where δ = normal stress
normal stress δ = r × z = 118 × 12 = 1416
so
ζ = C + δtanφ
ζ = 250 + 1416(tan29°)
ζ = 250 + 1416(tan29°)
ζ = 250 + 784.9016
ζ = 1034.9015 lb/ft²
Therefore the shear strength at a depth of 12 ft is 1034.9015 lb/ft²
help please thank you
The system is operated at a feed rate of 15 × 10^(-3) m^3/h with an initial glucose concentration of 10 kg/m^3.
How to explain the informationThe steady-state mass balance for the reactor can be written as:
F = QX + Qs
where F is the feed rate, QX is the volumetric flow rate of cells, and Qs is the volumetric flow rate of glucose.
At steady-state, QX and Qs are constant. Therefore, we can write:
QX = F - Qs
In this case, the system is operated at a feed rate of 15 × 10^(-3) m^3/h with an initial glucose concentration of 10 kg/m^3.
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Determine (a) the peak frequency deviation, (b) minimum bandwidth,and (c) baud for a binary FSK signal with a mark frequency of 38 kHz, a space frequency of 40 kHz, and an input bit rate of 4 kbps
The peak frequency deviation, minimum bandwidth, and baud for a binary FSK signal for the given frequencies are respectively;
a) 0.5 kHz
b) 9 kHz
c) 4000
Peak frequency deviation1) The peak frequency deviation is gotten from the formula;
∆f = |f_m - f_s|/f_b
where;
f_m is mark frequencyf_s is space frequencyf_b is input bit rateThus;
∆f = |38 - 40|/4
∆f = 0.5 kHz
2) The minimum bandwidth is given by the formula;
B = 2(∆f + f_b)
B = 2(0.5 + 4)
B = 9 kHz
3) For FSK signal, N = 1, and the baud is gotten from the Equation;
baud = f_b/1
f_b = 4 kbps = 4000 bps
Thus; baud = 4000/1 = 4000
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