A ceiling fan operates at three speeds, using 120 v of electricity from the wall. At low speeds, it uses 0. 25 a. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.
Answers
A) The calculated resistance needed to generate the current at low speed is; R = 480 ohms
B) Resistance at medium and larger speeds are;
At medium speed; R is less than that at low speed
At larger speed; R is less than that at medium speed.
A) We are given;
Voltage; V = 120 V
Current at lower speed; I = 0.25 A
Formula for resistance here is;
R = V/I
R = 120/0.25
R = 480 ohms
B) This means that if larger currents are required at higher speeds, it means that lower resistance would be required.
Similarly at medium currents the resistance will be lesser than that at lower speed but greater than that at larger speeds.
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Related Questions
What is a citizen journalist?
A. A professional newsperson who has been trained in the craft of
reporting news
B. An undercover journalist who reports on conflicts while traveling
with the military
C. An amateur photographer who enjoys taking photos of nature and
animals
D. A person who happens to witness a news event and takes pictures
or writes about it
Answers
Answer:
D. A person who happens to witness a news event and takes pictures or writes about it
Explanation:
Citizen journalists can be described as regular people who will report on something they themselves have witnessed, with no prior journalism experience.
3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 2. 00 m and the distance from the fulcrum to the load is 0. 500 m. A graph of resistance force vs. Effort force is shown. What is the mechanical advantage of the lever? what is the ideal mechanical advantage of the lever? what is the efficiency of the lever? show your work.
Answers
a.mechanical advantage of the lever is 1
b..ideal mechanical advantage of the lever is 4
c.4
Hey im taking act in a couple of days and was hoping if theres anyone whose willing to help me study give me tips and stuff
Answers
Since 60° is of 360° then the length of is the circumference of the circle.
Answers
Since 60° is one-sixth (1/6) of 360°, then the length of the arc subtended by a central angle of 60° is one-sixth (1/6) of the circumference of the circle.
If 3x - 7 < 29, then which of the following must be true?
Answers
Answer:
12
Explanation:
If 3x - 7 < 29 then x <12.
What is equation?An equation is a mathematical expression in terms of one or more unknown variable.
Given, the equation is
3x - 7 < 29
3x < 29 +7
3x < 36
x <12
Thus, if 3x - 7 < 29 then x <12.
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Answers
A cylinder shaped bucket is used as a sand container. The bucket has a height of 2. 5 ft and a radius of 0. 5 ft. How many cubic feet of sand does the bucket hold? use 3. 14 to approximate pi. Enter your answer as a decimal rounded to the nearest hundredth in the box.
Answers
\( \quad\rule{300pt}{1pt}\quad\)
Ⲋⲟⳑⳙⲧⳕⲟⲛ :We are given that a cylinder shaped bucket is used as a sand container . We have to find how much sand it can hold , which can be found by knowing the volume of cylindrical bucket .The volume of a cylinder is given by :
\( \quad\dashrightarrow\quad {\pmb{\sf {Volume = \pi r^2 h }}}\)
where,
π = 3.14r = 0.5 feet h = 2.5 feet\( \quad\dashrightarrow\quad \sf {V =\pi r^2 h }\)
\( \quad\dashrightarrow\quad \sf { V = 3.14 \times 0.5^2 \times 2.5}\)
\( \quad\dashrightarrow\quad \sf {V = 3.14\times 0.5\times 0.5\times 2.5 }\)
\( \quad\dashrightarrow\quad \sf {V = 1.9625 }\)
ㅤㅤㅤㅤㅤ~Hence, the bucket can hold 1.96 feet³ of sand!
\(\rule{350pt}{2pt} \)
Name 3 structures that belong to the Nervous System.
Answers
Answer:The nervous system comprises the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, consisting of the cranial, spinal, and peripheral nerves, together with their motor and sensory endings.
Explanation:
The nervous system comprises the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, together with their motor and sensory endings.
The Nervous System is a complex network of structures and cells that transmit signals between different parts of the body.
Three structures that belong to the Nervous System are:
Brain: The brain is the main control center of the Nervous System. It receives and processes information from the senses, controls thoughts, emotions, and behaviors, and coordinates the functions of the body.
Spinal Cord: The spinal cord is a long, thin bundle of nerve cells that extends from the brain down the back. It acts as a relay between the brain and the rest of the body. It carries signals to and from the brain, allowing us to move our muscles, feel sensations, and control bodily functions.
Nerves: Nerves are bundles of fibers that transmit signals between the brain, spinal cord, and the rest of the body. They are like highways that allow information to travel back and forth. There are different types of nerves, such as sensory nerves that carry information from the senses to the brain.
These three structures, the brain, spinal cord, and nerves, work together to enable communication and coordination within the Nervous System.
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1. If you receive a traffic ticket and do not pay the fine on time or do not appear as required...
A. OIt is OK, because your parents are responsible
B. You can pay when you have to re-register your car
C. ODMV will suspend your driving privilege until you pay the fine
D. You will go to jail
Answers
Answer:
probably B I think because the to me personally the rest wouldn't match to the question such as D
A store sells four 118-pound ears of corn in a package for $3. 59. The expression 3. 59p represents the cost of the corn for a number of packages. What does the variable p represent?
Answers
Let's call the number of packages of corn "p".
Then, the cost of the corn for "p" packages can be represented by:
3.59p
Therefore, the variable "p" represents the number of packages of corn. Answer: The number of packages of corn.
A plant grew 17 inches in one year.
1 inch is approximately equivalent to 2.5 centimetres .
Approximately how much did the plant grow in centimetres ?
Answers
Answer:
42.5 centimeteres
What brought about the formation of the Republican Party? The Kansas-Nebraska Act The Missouri Compromise The Emancipation Proclamation The election of Abraham Lincoln
Answers
Answer:The Kansas-Nebraska Act
Explanation: I did the test
Answer: The Kansas-Nebraska Act
Explanation:
A polynomial function f is defined as f(x)=3(5x+3)(x+2)(7x-1). Which of the following is a zero of function f ?
Answers
The zeros of the polynomial function f(x) are -3/5, -2, and 1/7.
How to calculate the valueIt should be noted that to find a zero of the function f(x), we need to solve for x when f(x) = 0.
So, we have:
f(x) = 3(5x+3)(x+2)(7x-1) = 0
Therefore, one or more of the factors (5x+3), (x+2), and (7x-1) must be equal to zero.
Solving each factor separately, we get:
5x+3 = 0 => x = -3/5
x+2 = 0 => x = -2
7x-1 = 0 => x = 1/7
Therefore, the zeros of the function f(x) are -3/5, -2, and 1/7.
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Calculate the magnitude of the total resultant force f⃗ r=f⃗ 1+f⃗ 2+f⃗ 3 acting on the mass
Answers
Resultant will be (0.54î - 1.75j) N, Magnitude is 1.83 N, and the Direction is - 72.9°, as per the given equation.
What is resultant force?A resultant force is the single force and corresponding torque that are produced when adding vectors to a system of forces and torques acting on a rigid body.
From the free body diagram, the resultant is a vector sum of all the three individual forces.
F₁ = 4(cos 25°î + sin 25°j) = (3.625î + 1.691j) N
F₂ = 6(cos 325î + sin 325j) = (4.915î - 3.441j) N
F₃ = (- 8î) N
Resultant force is
F₁ + F₂ + F₃ = (3.625î + 1.691j) + (4.915î - 3.441j) + (- 8î) = (0.54î - 1.75j) N
Magnitude = √[(0.54²) + (-1.75²)] = 1.83 N
Direction = tan⁻¹ (-1.75/0.54) = - 72.9°
Thus, this is the the magnitude of the total resultant force.
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What is the difference between an abyssal plain of the ocean and the plains of the continents? I need this ASAP
Answers
while a plain of the continents is a flat expanse of land that generally does not change much in elevation.Plains are one of the major landforms on earth, where they are present on all continents, and would cover more than one-third of the world's land area.
Ecosystems contain both __________ and __________ parts.
Answers
Ecosystem contain both 'Biotic factors or living parts' and Abiotic factors or non-living parts.BIOTIC FACTORS include plants,animals and other organisms while ABIOTIC FACTORS include rocks,temperature and humidity.
2. Explain why a psychiatrist cannot diagnose "insanity".
Answers
Answer:
First, "insanity" is not a diagnosis. As a doctor with medical and psychiatric education, a psychiatrist can only diagnose the "mental illness" side while also knowing how medical diagnoses interplay with "mental illness" problems.
Second, "insanity" falls more into a layman's definition of what is unusual, "crazy" or "odd" about a person who has a "mental illness". The only professional area where the word "insanity" or "insane" is used might be in the legal field when a particular defendant is evaluated and judged to be "insane", but in that context, only for the purpose of deciding whether the person knew and knows right from wrong. The legal declaration of "insanity" has little to do with "diagnosis" and nothing to do with the treatment of any mental illness. In fact, a person may have a mental illness, yet still be declared "sane" for court purposes. The issue in legal cases, as far as the term "insanity", strictly has to do with how well a defendant knew / knows right from wrong, whether the person can participate in his own defense, and understands the court proceedings. A court case may be postponed until such time a defendant has undergone court ordered therapy or treatment, e.g. confinement in a hospital setting, and can then understand right and wrong so that the court case can be heard then.
Explanation:
"Insanity" is not a medical term. Only a psychiatrist can identify "mental illness" difficulties while also understanding how medical diagnoses interact with mental illness issues.
insanity and medical diagnose:Insanity is no longer a medical diagnostic, but it is a legal word in the United States, owing to its common law origins.
Insanity is a legal notion used to distinguish between guilt and innocence. It is based on the advice of mental health specialists, although the phrase is now essentially legal rather than psychological. The DSM does not include a crazy diagnosis.
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Increasing line of Siam top trave increasing line of Sight and path of travel is good idea when driving at higher speeds because it helps a driver to remain prepared
Answers
Increasing line of sight and path of travel is a good idea when driving at higher speeds because it helps a driver to remain prepared. This means that when a driver can see further ahead, they can make better decisions about their driving.
They are able to see potential hazards and plan how to react to them before they become an immediate threat. The line of sight and path of travel are also important for maintaining a safe distance from other vehicles. At higher speeds, it is important to have a larger following distance in case the vehicle in front suddenly brakes or swerves. This gives the driver more time to react and avoid a collision.
However, it is important to switch to low beams when approaching other vehicles to avoid blinding other drivers. In conclusion, increasing the line of sight and path of travel is a crucial element of safe driving at higher speeds. It allows the driver to be more aware of their surroundings and make better decisions while on the road.
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Transitions show us how __________ ___________ are __________ to one another.
Answers
Keisha is pedaling her bicycle at a velocity of .10 km/min. How far will she travel in two hours?
(*Note: 0.1km/min = 6km/hr)
Answers
Answer:
d =120
Explanation:
v =d/t
2 hours=120 minutes
10=d/120
cancel the zero in 10 and 120
d =12km
hope this helps you
A rectangular prism with a length of 50 feet, width of 30 feet, and height of 20 feet. A rectangular pyramid with a base of 50 feet by 30 feet and height of 8 feet. Mr. Newman works as an architect. He created a solid foam model of a building that he is designing. How much foam was needed to make the model? 12,000 cm3 30,000 cm3 34,000 cm3 42,000 cm3
Answers
The foam that was needed to make the model is C 34,000 cm³
How to calculate the valueThe volume of a rectangular prism is length x width x height. The volume of the rectangular prism is 50 x 30 x 20 = 30,000 cubic feet.
The volume of a rectangular pyramid is (1/3) x base area x height. The base area of the rectangular pyramid is 50 x 30 = 1500 square feet. The volume of the rectangular pyramid is (1/3) x 1500 x 8 = 4000 cubic feet.
The total volume of the foam model is 30,000 + 4000
= 34,000 cubic feet.
So the answer is 34000
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Which of these statements describe properties of parallelograms check all that apply
Answers
Answer:
opposite angles are congruent.
consecutive angles are supplementary.
opposite sides are parallel.
Explanation:
i just took the test.
If the frequency of a wave is low, the ___ is also low. If the frequency of a wave is high, the ___ is also high.
Question 4 options:
tempo
dynamics
pitch
Answers
Write True or False 1.Coal,oil and natural gas are renewable energy resources_____________ 2.Tidal power stations are not expensive to build_____________
Answers
1. True
2. False
Some forestry professions work for logging companies
True or false
Answers
Answer:
true
Explanation:
Answer:
true
Explanation:
janice bought 4 oranges for $3.40. what is the unit price?
Answers
Answer:
24
Explanation:
Read the following paragraph from the article "How Social Stress Makes Your Brain Vulnerable to Depression," written by
Andy Coghlan in the online edition of New Scientist magazine, published on November 13, 2017:
Social stress can trigger changes in the brain that open the door to depression. Experiments in human brains and mice
suggest that experiences such as bullying make the blood-brain barrier leaky, letting inflammation into the brain and altering
mood.
Which of the options below most correctly and effectively incorporates this source material? (Either APA or MLA style citations
are acceptable.)
Bullying makes your brain leak, according to a shocking new study reported in New Scientist (Coghlan, 2017)!
O
In "How Social Stress Makes Your Brain Vulnerable to Depression," Andy Coghlan (2017) explains how "brains and
mice" can develop depression in unpleasant social situations.
The study shows that emotional experiences can cause physical changes in the brain that lead to depression. (Coghlan,
2017).
O Coghlan (2017) describes how stress can spark changes in the brain that open the way to depression.
Answers
The most appropriate option that effectively incorporates the source material is: Coghlan (2017) describes how stress can spark changes in the brain that open the way to depression.
How is the article written?In his 2017 article titled "The Link Between Social Stress and Depression," Andy Coghlan explores the correlation between these two factors impacting brain vulnerability.
According to Coghlan, the brain can undergo alterations as a result of events such as bullying, which can cause the blood-brain barrier to become permeable and enable inflammation to enter.
The change in brain activity has the potential to impact emotions and may lead to the onset of depression. Cognizant of the effects of emotional encounters on brain structure, Coghlan's discoveries underscore the correlation between social pressure and mental health ailments.
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Part A:
Which statement supports the idea in Passage 4 that it was Anna's dream to become a wrangler?
Anna believes her Papa does not have confidence in her.
Anna feels she is just as qualified as the men on the cattle drive.
Anna remembers the experiences she had on the ranch as a young child.
Anna knows her Papa will need all the help he can get if there is a stampede.
Part B:
Select a sentence from Passage 4 that supports your response to Part A.
“Anna closed her eyes and tried to sleep, but couldn’t. The men will need my help!” (paragraph 3)
“She lost herself in memories of working on the ranch with Mama and Papa. That was when Anna had learned to love wrangling.” (paragraph 10)
“At full speed, Anna guided Copper toward the stampeding cattle.” (paragraph 16)
“Anna nodded, then headed toward the point to help force the leaders back into the herd.” (paragraph 19)
Answers
Answer:
Anna believes her Papa does not have confidence in her.
Explanation:her papa does have confidence in her
mark and Jordan are car salesmen. mark's weekly compensation consists of $ 500 plus 2.5 % of the total amount of his sales for the week. jordan's weekly compensation consists of $ 400 plus 2 % of the total amount of his sales for the week. Jordan had x dollars in total sales last week. if d = [ ( 0.025 ) ( 1.5 x ) + 500 ] − [ ( 0.02 ) ( x ) + 400 ] represents the difference between mark’s compensation and Jordan's compensation for the week, then which of the following is a correct statement?
Answers
Answer:
We can simplify the expression for d:
d = (0.025)(1.5x) + 500 - (0.02)x - 400
d = 0.0375x + 100
This expression represents the difference between Mark's compensation and Jordan's compensation for the week, given that Jordan had x dollars in total sales.
To determine which of the following is a correct statement, we need to substitute different values of x and compare the values of d for Mark and Jordan.
For example, if Jordan had $10,000 in total sales last week, then:
Mark's compensation = $500 + 0.025(10,000) = $750Jordan's compensation = $400 + 0.02(10,000) = $600The difference, d = $750 - $600 = $150Therefore, we can say that if Jordan had $10,000 in total sales last week, then the difference between Mark's compensation and Jordan's compensation for the week was $150.
However, we cannot determine which of the following is a correct statement without additional information, as the statement options have not been provided in the prompt.
g(x) = 2x - 1
h(x) = 1-g(x)
the functions g and h are defunded above. What is the value of h(0)
Answers
Answer:
2
Explanation:
Since h (x) = 1 − g (x), substituting 0 for x yields h (0) = 1 − g (0). Evaluating g (0) gives g (0) = 2(0) − 1 = −1. Therefore, h (0) = 1 − (−1) = 2.