Answer:
The light from the first LED will appear as yellow while the light from the second LED won't appear as Yellow light when passed through a diffraction grating
Explanation:
There are two types of LED's
First LED emits only yellow light with wavelength of 590 nm
Second LED : emits red light with wavelength of 630 nm and emits green light with a 540 nm wavelength
The second LED produces a yellow light because of the mixture of red and green lights
therefore when the light from the SECOND LED is passed through a diffraction grating, the light is split into its components ( i,e green and red lights ) this is because the lights are not on the same wavelength
Which is an appropriate type of face and eye protection for resistance welding?
Answer:
While resistance welding you should wear clear grinding glasses, unbreakable plastic face shields or clear unbreakable plastic goggles. When resistance welding a #10, or more, shade lens should be worn. All hand and portable tools should be inspected for loose parts, cleanliness, or worn power cords.
Please select the word from the list that best fits the definition I love horses and want to be a veterinarian
Answer:
the right word is Intrinsic
An amplifier's input voltage is 12 mV, and its output voltage is 128 mV. Calculate voltage gain.
Answer:
Amplifier gain is equal to 10.67.
Explanation:
Voltage gain of an amplifier can be expressed as this equation:
A_v = (V_output) / (V_input)
Where A_v is the gain, V_output is the output voltage, and V_input is the input voltage.
For this we will solve:
A_v = 128 mV / 12 mV
A_v = 10.67
So the amplifier's gain is 10.67.
Cheers.
Consider a simple ideal Rankine cycle with fixed boiler and condenser pressures. If the steam is superheated to a higher temperature, (a) the turbine work output will decrease. (b) the amount of heat rejected will decrease. (c) the cycle efficiency will decrease. (d) the moisture content at turbine exit will decrease. (e) the amount of heat input will decrease.
Answer:
Option D - the moisture content at turbine exit will decrease
Explanation:
In an ideal rankine system, the phenomenon of superheating occurs at a state where the vapor state of the fluid is heated above its saturation temperature and the phase of the fluid is changed from the vapor phase to the gaseous phase.
Now, a vapour phase has two different substances at room temperature, whereas a gas phase consists of just a single substance at a defined thermodynamic range, at standard room temperature.
At the turbine exit, since it's just a single substance in gaseous phase, it means it will have less moisture content.
Thus, the correct answer is;the moisture content at turbine exit will decrease
The vast majority of automotive engines are of the rotary type rather than the less common piston type, because they have a longer life and produce fewer emissions. Group of answer choices True False
Answer:
False
Explanation:
Vast majority of automotive engine are mostly of the piston type, and not the rotary type engine that has long gone obsolete. The piston type engine has a longer life when compared to the rotary engine, and emission is less. The emission from the rotary engine was exacerbated by the fact that the lubricant was added with the fuel directly into the engine, whereas the piston type engine has a and separate channel for fuel and lubricant.
the output bimetallic element is
a pressure
b voltage
c mechanical strain
d mechanical displacement
Answer:
maybe the answer to your question is pressure. hope it helps
Determine the design angle ϕ (0∘≤ϕ≤90 ∘) between struts AB and AC so that the 400 lb horizontal force has a component of 600 lb which acts up to the left, in the same direction as from B towards A. Take θ = 30 ∘.
Answer:
design angle ∅ = 4.9968 ≈ 5⁰
Explanation:
First calculate the force Fac :
Fac = [tex]\sqrt{400^2 + 650^2 - 2(400)(650)cos30}[/tex]
= [tex]\sqrt{160000 + 422500 - 80210}[/tex]
= 708.72 Ib
using the sine law to determine the design angle
[tex]\frac{sin}{400} = \frac{sin 30}{Fac}[/tex]
hence ∅ = [tex]sin^{-1} (\frac{sin 30 *400}{708.72} )[/tex]
= [tex]sin^{-1} 0.0871[/tex] = 4.9968 ≈ 5⁰
The design angle of the struts system given is;
ϕ = 38.26°
Parallelogram law of vector additionThe diagram showing the struts system is missing and so i have attached it.
Now, from the forces given to us acting on the system attached, I have drawn a force diagram in form of a parallelogram showing the direction of the forces action. The second attached image shows this force diagram called diagram a.From the diagram, we can see that it follows parallelogram law of vector addition.
Now, I have narrowed down the force system to the upper part of the strut as depicted in the third image attached.
From the third image attached, we can use the concept of parallelogram law of vector addition and the law of cosine to get the force on the strut AC which is;F_AC = √(400² + 600² - 2(400 × 600)cos 30)
F_AC = 322.97 lb
Now, to get the design angle, we will solve as;(sinϕ)/(sin 30) = 400/322.97
Where; ϕ is the design angle.
Thus;
(sinϕ) = (400/322.97) × sin 30
(sinϕ) = 1.2385 × 0.5
(sinϕ) = 0.61925
ϕ = sin^(-1) 0.61925
ϕ = 38.26°
Read more about Parallelogram law of vector addition at; https://brainly.com/question/26056717
Exceeding critical mach may result in the onset of compressibility effects such as:______.
Answer:
Sound barrier.
Explanation:
Sound barrier is a sudden increase in drag and other effects when an aircraft travels faster than the speed of sound. Other undesirable effects are experienced in the transonic stage, such as relative air movement creating disruptive shock waves and turbulence. One of the adverse effect of this sound barrier in early plane designs was that at this speed, the weight of the engine required to power the aircraft would be too large for the aircraft to carry. Modern planes have designs that now combat most of these undesirable effects of the sound barrier.
What is the mass of a brass axle that has a volume of 0.318 cm?
Answer:
2.7g
Explanation:
the mass of a brass axle that has a volume of 0.318 cm is 2.7g.
A circular hoop sits in a stream of water, oriented perpendicular to the current. If the area of the hoop is doubled, the flux (volume of water per unit time) through it:___________
Answer:
The flux (volume of water per unit time) through the hoop will also double.
Explanation:
The flux = volume of water per unit time = flow rate of water through the hoop.
The Flow rate of water through the hoop is proportional to the area of the hoop, and the velocity of the water through the hoop.
This means that
Flow rate = AV
where A is the area of the hoop
V is the velocity of the water through the hoop
This flow rate = volume of water per unit time = Δv/Δt =Q
From all the above statements, we can say
Q = AV
From the equation, if we double the area, and the velocity of the stream of water through the hoop does not change, then, the volume of water per unit time will also double or we can say increases by a factor of 2
what is the advantage of decreasing the field current of a separately excited dc motor below its nominal value
Answer:
Ability to rotate at higher speeds
Explanation:
Constant K1 becomes greater than the other constant K2
This translates to that the motor being able to rotate at high speeds, without necessarily exceeding the nominal armature voltage.
The armature voltage is the voltage that is developed around the terminals of the armature winding of an Alternating Current, i.e AC or a Direct Current, i.e DC machine during the period in which it tries to generate power.
What is the composition, in atom percent, of an alloy that consists of 4.5 wt% Pb and 95.5 wt% Sn?
a. 2.6 at% Pb and 97.4 at% Sn.
b. 7.6 at% Pb and 92.4 at% Sn.
c. 97.4 at% Pb and 2.6 at% Sn.
d. 92.4 at% Pb and 7.6 at% Sn.
Answer: Option A is correct -- 2.6 at% Pb and 97.4 at% Sn.
Explanation:
Option A is the only correct option -- 2.6 at% Pb and 97.4 at% Sn. While option B, which is 7.6 at% Pb and 92.4 at% Sn. and option C, which is 97.4 at% Pb and 2.6 at% Sn. and option D, which is 92.4 at% Pb and 7.6 at% Sn. are wrong.
A centrifugal pump with a 12- in diameter impeller requires a power input of 60 hp when the flowrate is 3200 gpm against a 60 ft head. The impeller is changed to one with a 10 in. diameter. Determine the expected flowrate, head, and input power if the pump speed remains the same
Answer:
a) expected flow rate is 1852 gpm
b) head is 41.7 ft
c) input power is 21.1 hP
Explanation:
from flow coefficient equation C_Q = Q/(W×D³)
Q ∝ d³
Qd₁/Qd₂ = d₁³/d₂³
where Qd₁ and Qd₂ are different discharges with respect to different diameter, (Qd₁ = 3200 gpm) and d₁ is diameter one ( 12 in) while d₂ is diameter 2 ( 10 in),
now we substitute
Qd₂ = Qd₁(d₂³/d₁³)
Qd₂ = 3200( 10/12)³
Qd₂ = 1852 gpm
∴ expected flow rate is 1852 gpm
next we calculate the head
h ∝ d²
hd₁/hd₂ = d₁²/d₂²
where hd₁ and hd₂ are different heads with respect to different diameter, (hd₁ = 60 ft) and d₁ is diameter one ( 12 in) while d₂ is diameter 2 ( 10 in),
now we substitute
hd₂ = hd₁(d₂²/d₁²)
hd₂ = 60 ( 10/12 )²
hd₂ = 41.7 ft
∴ head is 41.7 ft
Now calculate the input power
W ∝ d⁵
Wd₁/Wd₂ = d₁⁵/d₂⁵
where Wd₁ and Wd₂ are different power with respect to different diameter, (Wd₁ = 60 hp) and d₁ is diameter one ( 12 in) while d₂ is diameter 2 ( 10 in),
now we substitute
Wd₂ = Wd₁(d₂⁵/d₁⁵)
Wd₂ = 60 ( 10/12 )⁵
Wd₂ = 21.1 hP
∴ input power is 21.1 hP
An airbag is being replaced in a vehicle.Technician A days that the bag should be carried with the metal housing pointing downward. Technician B say the metal housing should be pointed away from your body. Who is right?
Answer:
Technician B
Explanation:
Technician A is incorrect
The two technicians A and B gave a statement about the airbag being replaced in a vehicle. Technician B is correct.
What are airbags?An airbag is an occupant restraint device for cars that uses a bag that, in the event of a collision, instantly inflates and deflates. It is made up of an impact sensor, an inflating module, a flexible fabric bag, and an airbag cushion.
When a collision occurs, airbags, which are inflatable cushions installed into cars, shield the occupants from being struck by the inside of the car or by outside objects like other cars or trees.
Without an airbag, you run the risk of suffering more serious injuries from blunt impact trauma. This frequently happens to passengers in cars where the airbag did not deploy.
Therefore, Technician B is correct.
To learn more about airbags, refer to the link:
https://brainly.com/question/4766085
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1. Get the trDFgrouped data starting from the May heavy day counts to the August heavy counts
2. Group xyz customers using BUYER_STATUS, heavyCat, and ZIP, and apply np.sum function on the aggregated data for YTD_SALES_2009 and LTD_SALES columns
11. Two technicians are discussing tire rotation. Technician A says that you always follow the tire-rotation procedure outlined in the owner's manual or online service information. Technician B says that the modified "X" rotation pattern is seldom used. Which technician is correct? A. Both Technicians A and B B. Technician B only C. Neither Technician A nor B D. Technician A only
Answer:
Technician A
Explanation:
Technician A is correct. Technician B is wrong, as different drive vehicles (FWD, RWD, AWD, 4WD) each require a certain rotation for optimal tire wear.
1. Computers are fully digital which means: A. They can’t convert things from analog B. They work only with numeric digits (based on math) C. They can’t spell D. They are important 2. The computer world uses a naming system for quantities of bytes based on a _____________ system. A. Italian B. German C. French D. Puerto Rican
Answer:
1. B. They work only with numeric digits (based on math)
2. C. French
Explanation:
1. Computers that are fully digital are those that can process data only expressed in binary code, which is in 0 and 1 (numeric digits).
2. Remember, a byte is the smallest unit of memory in a computer. Eight bits (an octet) make one byte. Furthermore, the naming system for quantities of bytes which is the term "octet" is of French origin.
Answer:
b.binary system
c.French is your answer
The term route of entry on an sds refers to the way a ___ enters the body
The correct answer is A) Chemical
Explanation:
The abbreviations SDS means Safety Data Sheet, which refers to a very complete document about chemicals and safety related to these, including their properties and potential hazards, as well as, procedures or steps to avoid hazards and accidents.
This means the main focus of this document is chemicals; moreover, in this, there is information about the route of entry, which refers to the way chemical can enter the body and includes through inhalation, ingestion, contact with skin, among others. Also, depending on the chemical some routes of entry represent a major hazard. According to this, the correct answer is A.
Answer: Chemical!!!
Explanation:
Kieran and Kurt spend most of their day performing physical labor, aligning materials, and inspecting projects for quality and safety. However, Kieran has no fear of heights, while Kurt works with his feet on the ground. Which most likely explains the jobs of Kieran and Kurt? Kieran is a Roofer, and Kurt is a Plumber. Kieran is a Plumber, and Kurt is a Roofer. Kieran is a Carpenter, and Kurt is a Drafter. Kieran is a Drafter, and Kurt is a Carpenter.
Answer:
Kieran is a Carpenter, and Kurt is a Drafter
Explanation:
Among all the professions listed, Kurt can only possibly be a Drafter. A Drafter is an engineering technician who makes detailed technical drawings or plans for machinery, buildings, electronics, infrastructure, sections, etc. Drafters make use of computer software and manual sketches to convert the designs, plans, and layouts of engineers and architects into a set of technical drawings. All the other professions will at some point need for the professional to stand and work at an height above the ground except for a drafter, whose feet will remain on the ground at almost all times.
Answer:
A is the right answer.
Explanation:
Hope that helps
A cylinder 8 in. in diameter and 3 ft long is concentric with a pipe of 8.25 in internal diameter. Between the cylinder and the pipe there is an oil film. What force is required to move the cylinder along the pipe at a constant velocity of 3 ft/s? The kinematic viscosity of the oil is 0.006 ft2 /s; the SG is 0.92.
Answer:
What force is requiere to move the cylinder along
Explanation:
The kinematic viscosity of the ol is 0.006 fr2
What is the biggest expectation when engineers test out designs?
A.
Designs need to be totally unique.
B.
There are no expectations about the results, since all ideas are considered.
C.
Designs need to be feasible.
D.
Designs should be implemented within a certain time frame.
Answer: Designs need to be feasible.
Explanation: don’t know, guessed got it right
5) Calculate the LMC wal thickness of a pipe and tubing with OD as 35 + .05 and ID as 25 + .05 A) 4.95 B) 5.05 C) 10 D) 15.025
Answer:
LMC wall thickness= 5.05
Explanation:
Given:
Minimum inner diameter = 25 - 0.05 = 24.95
Maximum outer diameter = 35 + 0.05 = 35.05
Find:
LMC wall thickness
Computation:
LMC wall thickness = (maximum outer diameter - minimum inner diameter) / 2
LMC wall thickness = (35.05 - 24.95) / 2
LMC wall thickness= 5.05
In case of damaged prestressed concrete I girders which are used for restoring strength?
Answer: The use of post-tensioning rods is useful in this situation.
Explanation:
The prestressed concrete has not been accepted as a good building material. The high tensile strength of steel is combined with the concrete to give the compressive strength to the concrete.
Post-tensioning rods of steel along with jacking can be used to restore the strength of the prestressed girder and it can begin with the calculated preload. This way the damaged concrete can be repaired and restored.
2. What are the separate parts that make up an oxyacetylene flame?
Answer:
Explanation:
Primary combustion where carbon monoxide (CO) and free hydrogen (H) are produced, and the secondary combustion where water vapor (H2O) and carbon dioxide (CO2) are formed.
What is the purpose of making internal resistance of milli-ammeter very low?A) High accuracy.B) Minimum voltage drop across meter.C) Maximum voltage drop across meter.D) High sensitivity.
Answer:
B) Minimum voltage drop across meter
Explanation:
An ammeter is a measuring instrument device that is used to measure small currents flowing through a circuit in milli-ampere. The internal resistance of the milli ammeter is very low so that there would be a minimum voltage drop across the meter causing a minimum effect of the current in the circuit, this results to a measurement closer to the original value. If a high resistance is place, there would be large voltage drop therefore the current measured would be lesser than the original value.
I am trying to create a line of code to calculate distance between two points. (distance=[tex]\sqrt{ (x2-x1)^2+(y2-y1)^2}) My line is point_dist = math.sqrt((math.pow(x2 - x1), 2) + math.pow(y2 - y1), 2) but I am getting an error saying that pow is expecting two arguments and is only getting one. Can anyone help me?
Answer:
point_dist = math.sqrt((math.pow(x2 - x1, 2) + math.pow(y2 - y1, 2))
Explanation:
The distance formula is the difference of the x coordinates squared, plus the difference of the y coordinates squared, all square rooted. For the general case, it appears you simply need to change how you have written the code.
point_dist = math.sqrt((math.pow(x2 - x1, 2) + math.pow(y2 - y1, 2))
Note, by moving the 2 inside of the pow function, you have provided the second argument that it is requesting.
You were close with your initial attempt, you just had a parenthesis after x1 and y1 when you should not have.
Cheers.
An open channel has a trapezoidal cross section with a bottom width of 5 m and side slopes of 2 : 1 (H : V). If the depth of flow is 2 m and the average velocity in the channel is 1 m/s, calculate the discharge in the channel.
Answer:
Q = 18 m^3/sec
Explanation:
In trapezoidal channel
Area [tex]A = \frac{1}{2}(a+b)h[/tex]
where a, b are parallel side and h is distance b/w them.
Also, as per question
[tex]tan\theta = \frac{1}{2}\\\Rightarrow \theta = 26.56^{\circ}[/tex]
a = 5 m , b =5+2(2/tanθ) = 13 m
Therefore, A = 0.5(5+13)2 = 18 m^2
Discharge Q = AV = 18×1 = 18 m^3/sec
V= velocity = 1 m/s (given)
In which order are the following measuring instruments listed from lowest precision to highest precision:
Select one:
a. Outside Calipers.
Ruler.
Micrometer.
Digital Calipers.
b. Outside Calipers.
Digital Calipers.
Ruler.
Micrometer.
c. Outside Calipers.
Digital Calipers.
Micrometer.
Ruler.
Answer:
Answer is C
Explanation:
Outside Calipers.
Digital Calipers.
Micrometer.
Ruler.
Tetrahymena thermophila protozoa have a minimum doubling time of 6.5 hours when grown using bacteria as the limiting substrate. The yield of protozoal biomass is 0.33 g per g of bacteria and the substrate constant is 12 mg/ l. The protozoa are cultured at steady state in a chemostat using a feed stream containing 10 g/ l of nonviable bacteria. What is the maximum dilution rate for operation of the chemostat?
Answer:
The answer is "[tex]\bold {3.3 \ \frac{g}{L}}[/tex]"
Explanation:
If the endogenous metabolic rate wasn’t substantial after, which [tex]\mu_{net} = \mu_{max} = \frac{0.693}{ \text{ doubling period}}[/tex] .
Throughout the calculating of doubling the time is set at 6.5 hours, consequently [tex]\mu_{max} = \frac{0.693}{6.5} = \frac{0.1}{hours}.[/tex]
Know we calculate the two-equation,
Initially, the maximum dilution frequency for [tex]D_{max}[/tex] that is:
[tex]D_{max}= \mu _{max}\times \frac{[S_0]}{{K_s + [S_0]}} .....(a)[/tex]
In secondary the steady concentration of state cells X,
[tex]X = \frac{Y_{\frac{x}{s}} (s[S_0]-K_sD)}{(\mu _{max}-D)}...... (b)[/tex]
In this section, we will display the [tex]Y_{\frac{x}{s}}[/tex] , that is equal to [tex]0.33\ \frac{g}{g-substrate}[/tex], and the value of the [tex]K_s = 12 \times 10^{-3} \ \frac{g}{L}[/tex].
For equation (a):
[tex]D_{max} = 0.1 \times \frac{10}{ (12 \times 10^{-3} + 10)}[/tex]
[tex]= 0.1 \times \frac{10}{ (\frac{12}{10^{3}} + 10)}\\\\= 0.1 \times \frac{10}{ 0.012 + 10)}\\\\= 0.1 \times \frac{10}{ 10.012}\\\\=0.1 \times 0.9988\\\\= 0.09988\\\\= 0.1 \ \ \frac{1}{h}[/tex]
In the Operating value is equal to [tex]D =\frac{1}{2}[/tex] of [tex]D_{max}[/tex], so D is =[tex]\frac{0.05}{h}[/tex] in our case.
Finally, the amount of protozoa cells in equation (b):
[tex]X = 0.33 \times (10 - 12 \times 10^{-3} \times \frac{0.05}{(0.1 - 0.05)})\\\\X = 0.33 \times (10 - 12 \times 10^{-3} \times \frac{0.05}{-0.05})\\\\X = 0.33 \times (10 - 12 \times 10^{-3} \times -1 )\\\\X = 0.33 \times (10 + \frac{12}{10^{-3}} )\\\\X = 0.33 \times ( 10.012 )\\\\X= 3.303\\[/tex]
a mercury barometer located in a lab has a heigh tof 750 mm. what is the atmosphereic pressur ein kPa
Answer:
The atmospheric pressure from a mercury barometer equals to 99.992 kilopascals.
Explanation:
760 milimeters of mercury column is equal to 101.325 kilopascals. The atmospheric pressure is found by simple rule of three:
[tex]p_{atm} = \frac{750\,mm\,Hg\times 101.325\,kPa}{760\,mm\,Hg}[/tex]
[tex]p_{atm} = 99.992\,kPa[/tex]
The atmospheric pressure from a mercury barometer equals to 99.992 kilopascals.