How has technology affected the economy? Check all that apply.
Robots have taken over some jobs in factories.
Fewer employees are able to do their jobs from home.
Automation has had less of an impact in manufacturing.
The pharmaceutical industry has improved the economy.
Consumers can buy goods and services on the Internet.
Competition between companies has led to new products.
Answer:
Consumers can buy goods and services on the internet.
Competition between companies has led to new products.
Explanation:
Answer:
(E) (F) aka
Explanation:
got it right on edge
how does a supercharger work?
Answer:
Supercharger works through a pair of rotors that blow air at a high speed into the intake port. As the port then contains a greater quantity of air, it becomes compressed. This enables a higher quantity of fuel to be injected into the combustion chamber, thus generating higher power.
Explanation:
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One state leads the country in tart cherry production, producing 79 out of every 100 tart cherries each year.
a. What percent of tart cherries are produced in this state?
b. What percent of tart cherries are not produced in this state?
a. What percent of tart cherries are produced in this state?
b. What percent of tart cherries are not produced in this state?
Answer:
Percent of not tart cherries = 21%
Explanation:
Given:
Production of cherry tart = 79
Find:
Percent of tart cherries
Percent of not tart cherries
Computation:
Percent of tart cherries = Production of cherry tart[100% / 100]
Percent of tart cherries = 79[100% / 100]
Percent of tart cherries = 79%
Percent of not tart cherries = 100% - Percent of tart cherries
Percent of not tart cherries = 100% - 79%
Percent of not tart cherries = 21%
Which phrase best describes the biosphere?
Answer:
BIOSPHERELife and spaceLife within a circular areaAnswer:
[tex]here \: is \: the \: answer \: [/tex]
Explanation
A biosphere is the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
Find the surface area of the gulf box Square centimeters
Answer:
A = 600 cm²
Explanation:
The surface area of a cuboid is given by :
A = 2(lb+bh+hl)
Here, l = b c = 10 cm
Put all the values,
A = 2[10(10)+10(10)+10(10)]
= 2(100+100+100)
= 2(300)
= 600 cm²
So, the surface area of the box is equal to 600 cm².
the 6 penalties for driving under influence
Which statement describes an effect that humans have on the geosphere when they build a dam?
Answer:
Ice may form on the lake. Plants may grow on the dam. Rocks and minerals are used to build the dam.
Explanation:
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what is the fastest motorcycle in the world ?
Describe the specific safety practices and procedures that they need to observe when
assembling, wiring and testing electrical components mounted in enclosures (including any
specific legislation, regulations or codes of practice for the activities, equipment or materials)
Answer:
using the engineering is a lot of work you need a plan out and you need the right things cuz you can't just go and be like oh yeah I'm going to build a house but you have no materials so it's careful to go get you some materials before you go build a house and you'll need some safety just be careful the things you want to build
which of the following people is required by law to wear a seatbelt
Answer:
Car drivers and front seat passengers must wear a seat belt, unless they have a medical exemption certificate. Adults travelling in the rear of a car must also use seatbelts, if they're fitted. It's the responsibility of the adult passenger (not the driver) to make sure that they are using the seatbelt.
The voltage drop across an LED is 2 Volts. It is connected to a 5 volt power supply with a resistor, as shown. What resistor value should be used to set the LED current to 4 mA?
Answer:
Explanation:
The voltage drop across an LED is 2 Volts. It is connected to a 5 volt power supply
so voltage at resistor = 5-2 = 3V
by ohms' law, V=IR n current at 4mA or 0.004A
R = 3/0.004 = 750 ohms
Match the scenario to the type of green initiative it represents.
1. A small city recycles wastewater to use for a sprinkler system in a public park.
2. Builders test for radon gas in new home construction.
3. A construction crew removes asbestos shingles from an older home.
conserve water
protect air quality
reduce toxins
Explanation:
2. Builders test for radon gas in new home construction
What were the most likely reasons that US leaders decided to develop the atomic bomb? Select two options.
They thought they needed to develop the atomic bomb before other countries did.
They wanted to be viewed by other nations as the most powerful nation in the world.
They believed that defeating Japan with regular weapons would be too costly in time and lives.
They believed they had to develop the atomic bomb to discover all of the uses of nuclear power.
They believed that only the United States was powerful enough to possess such a fearful weapon.
Answer:
Option B and C
Explanation:
The United states of America developed Atomic weapons to threat the Nazis in Germany as there was rumor that they are also developing such kind of weapon.
However, after the World war II, the US continued to develop atomic weapons to look powerful among all.
In past they had dropped atom bombs two times on Japan as they wanted to defeat Japanese speedily.
Answer:
A,c
Explanation:
N
Select the correct answer.
Which of these situations can be solved by an expert system?
A. predicting election results based on all previous election voting trends
B. deciding the sentence in criminal cases
C. predicting the winner of a baseball game based on the statistics of one team
OD.
updating its knowledge base to remove incorrect data
Answer:
A because i know thats it
Which language would be most useful to learn for someone interested in studying environmental engineering with an emphasis on the effects of deforestation, such as soil erosion?
Arabic
Chinese
French
German
Answer:
Chinese or French .... l think
What do the cells and tissues of the endocrine system release to help maintain homeostasis in the body?
The cells and tissue of the endocrine system release hormones to help maintain homeostasis in the body.
What is the endocrine system?The complex network of glands and organs that makes up the endocrine system secretes hormones—chemical messengers—directly into the bloodstream. The hormones then travel through the bloodstream to their target cells, where they must act.
The hormone-producing glands may or may not be nearby the target cells. The nervous system and endocrine system collaborate to start or stop movement and physiological function.
A body's homeostasis is maintained by a negative feedback mechanism (activation of one component does not activate the other). All body systems must be in a condition of balance for the body to survive and work properly.
Therefore, to support the body's homeostasis, the cells, and tissues of the endocrine system release hormones.
To learn more about the endocrine system, refer to the link:
https://brainly.com/question/29139873
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calculate the number of gram of ammonia gas (NH3) contained in the a 3.0L vessel at 305 K with a pressure of 1.50 atm
Answer: The number of gram of ammonia gas ([tex]NH_{3}[/tex]) contained in the a 3.0L vessel at 305 K with a pressure of 1.50 atm is 3.048 g.
Explanation:
Given: Volume = 3.0 L
Temperature = 305 K
Pressure = 1.50 atm
Formula used to calculate the number of moles is as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.
[tex]PV = nRT\\1.50 atm \times 3.0 L = n \times 0.0821 L atm/mol K \times 305 K\\n = \frac{1.50 atm \times 3.0 L}{0.0821 L atm/mol K \times 305 K}\\= \frac{4.5}{25.0405}\\= 0.179 mol[/tex]
It is known that moles is the mass of substance divided by its molar mass.
Hence, mass of ammonia gas (molar mass = 17.03 g/mol) is as follows.
[tex]Moles = \frac{mass}{molar mass}\\0.179 mol = \frac{mass}{17.03 g/mol}\\mass = 3.048 g[/tex]
Thus, we can conclude that the number of gram of ammonia gas ([tex]NH_{3}[/tex]) contained in the a 3.0L vessel at 305 K with a pressure of 1.50 atm is 3.048 g.
how many seconds will it take to cross the street at a normal walking pace?
Match the scenario to the related government program.
1. Newlyweds buy an energy-efficient dishwasher for their new home.
2. An engineering team retrofits a manufacturing plant with a new heating system that is 20% more effective than the old one.
3. A team designs an arid-zone shade structure from political campaign signs.
lifecycle building challenge
energy star program
better buildings initiative
Answer:
3. A team designs an arid-zone shade structure from political campaign sign
Which of the following technologies will the design and development of a bicycle stand be categorized under?
(A) Building technology
(B) Electrical technology
(C) Electronic technology
(D) Mechanical technology
Answer:
when you're going to need a designer a builder an electrical builder and a mechanic and you're going to need to be careful with what you use for all those things but the bike need to build you'll need a structure
Answer:
Building technology
Explanation:
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A simple non-ideal Rankine cycle with water as the working fluid operates between the pressure limits of 15 MPa in the boiler and 125 kPa in the condenser. Saturated steam enters the turbine. Irreversibilities in the turbine cause the steam quality at the outlet of the turbine to be 70 percent. Determine the isentropic efficiency of the turbine and the thermal efficiency of the cycle. Use steam tables. The isentropic efficiency of the turbine is %. The thermal efficiency of the cycle is
Answer:
The right solution is "28.45%".
Explanation:
The given values are:
[tex]P_4=50\ kPa[/tex]
[tex]h_4=0.7(2304.7)+340.5[/tex]
[tex]=1953.83 \ KJ/Kg[/tex]
and,
[tex]P_3=15 \ mPa[/tex]
[tex]h_3=hg[/tex]
[tex]=2610.8 \ KJ/Kg[/tex]
[tex]s_3=sg[/tex]
[tex]=5.3108 \ KJ/Kgh[/tex]
At 45,
⇒ [tex]x_{45} = \frac{5.3108-1.0912}{6.5019}[/tex]
[tex]=0.66[/tex]
At [tex]P_4=50 \ Kpa[/tex],
[tex]h_f=340.54[/tex]
or,
[tex]V_f=0.001030 \ m^3/Kg[/tex]
then,
⇒ [tex]h_2=340.54+0.001030(15\times 10^{3}-50)[/tex]
[tex]=355.94 \ kJ/kg[/tex]
hence,
The isentropic efficiency of turbine will be:
⇒ [tex]n_T=\frac{h_3-h_4}{h_3-h_{45}}[/tex]
[tex]=\frac{2610.8-1953.83}{2610.8-1836.26}[/tex]
[tex]=84.818[/tex] (%)
The thermal efficiency of cycle will be:
⇒ [tex]n_C=\frac{W_T-W_P}{2_{in}}[/tex]
[tex]=\frac{(2610.8-1953-83)-(355.93-340.54)}{2610.8-355.93}[/tex]
[tex]=28.45[/tex] (%)
The isentropic efficiency of the turbine is; η_t = 76.35%
The thermal efficiency of the cycle is; η_th = 27.08%
We are given;
P₃ = 15 mPa
P₄ = 125 kPa
At P₃ = 15 mPa = 15000 kPa, from the first table attached, we have;
Enthalpy of saturation vapour; h_g = h₃ = 2610.8 kJ/kg
Entropy of saturation vapour; s_g = s₃ = 5.3108 kJ/kg.k
Similarly, At P₄ = 125 kPa, from the second table attached, we have;
Enthalpy of evaporation; h_fg = 2240.6 kJ/kg
Enthalpy of saturation; h_f = 444.36 kJ/kg
Entropy of saturation; s_f = s₄ = 1.3741
Specific volume; v_f = 0.001048 m³/kg
Since the the steam quality at the outlet of the turbine to be 70 percent, then;
h₄ = 0.7h_fg + h_f
h₄ = 0.7(2240.6) + 444.36
h₄ = 2012.78 kJ/kg
Formula for the quality of the steam is;
x,₄₋₅ = (s₃ - s₄)/(s₃ + s₄)
x,₄₋₅ = (5.3108 - 1.3741)/(5.3108 + 1.3741)
x,₄₋₅ = 0.5889
Formula for h₂ is;
h₂ = h_f + V_f(P₃ - P₄)
h₂ = 444.36 + 0.001048(15000 - 125)
h₂ = 459.959 kJ/kg
Formula for Isentropic efficiency is;
η_t = (2610.8 - 2012.78)/(2610.8 - (0.7*2610.8))
η_t = 0.7635
η_t = 76.35%
Formula for thermal efficiency here is;
η_th = [(h₃ - h₄) - (h₂ - h_f)]/(h₃ - h₂)
η_th = [(2610.8 - 2012.78) - (459.959 - 444.36)]/(2610.8 - 459.959)
η_th = 0.2708
η_th = 27.08%
Read more about Rankine cycle at; https://brainly.com/question/14894227
What's the best way to get rid of an extremely puffed up battery?
Answer:
If it is rechargable, there should be instructions on it, but I believe you can recycle it. For single use batteries, they need to be put into a safe location as they can actually explode sometimes, and acid leaks can also occur.
Normally, you can use put something like electrical tape or a nonconductive material on top of both of the battery nodes and you can just toss it into a trash can.
Explanation:
Name some of the traits that Darwin studied in the Galapagos finches.
Answer:
Darwin noticed that fruit-eating finches had parrot-like beaks, and that finches that ate insects had narrow, prying beaks. He wrote: "One might really fancy that from an original paucity [scarcity] of birds ... one species had been taken and modified for different ends."
What is an adaptation?
Answer:
An adaptation is the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment.
In engineering im assuming that an adaptation would just be an improved tool of sorts
Answer:
is imitating the physical and behavioral characteristics of something or someone
explain how a roller coaster functions using gravity and momentum. Why does it not need an engine or a motor to speed it up and slow it down?
Answer:
A roller coaster does not have an engine to generate energy. This builds up a supply of potential energy that will be used to go down the hill as the train is pulled by gravity. Then all of that stored energy is released as kinetic energy which is what will get the train to go up the next hill.
Explanation:
When you select multiple edges to Chamfer, a flag is
displayed on each edge and each one can be given individual
Chamfer dimensions.
Select Answer
FALSE
TRUE
I need to find the answer for this question this is hard and I can’t find it
How does a turbo charger work
Answer:
The turbocharger on a car applies a very similar principle to a piston engine. It uses the exhaust gas to drive a turbine. This spins an air compressor that pushes extra air (and oxygen) into the cylinders, allowing them to burn more fuel each second
Explanation:
Answer:
The turbocharger on a car applies a very similar principle to a piston engine. It uses the exhaust gas to drive a turbine. This spins an air compressor that pushes extra air (and oxygen) into the cylinders, allowing them to burn more fuel each second.
Explanation:
