Work input is required in each cycle w = 208j
Here can explain as ,according to the law of conservation of energy , the total heat given off the surrounding by a refrigerator is equal to the work done by the refrigerator and the heat removed from the inside of a refrigerator .i.e. the addition of heat removed or absorbs and work done by the refrigerator is equal to the heat expelled to the room during each cycle. It can be shown as ,
[tex]Q_{h}[/tex] =[tex]Q_{c}[/tex] + [tex]W[/tex]
Where,
[tex]W[/tex] is work input of refrigerator during each cycle.
[tex]Q_{c}[/tex] is the heat removed or absorbed by the refrigerator.
[tex]Q_{h}[/tex] is heat expelled to the room during each cycle.
Given here,
[tex]Q_{c}[/tex] = 257 j
[tex]Q_{h}[/tex] = 465 j
Therefore from above equation can be find the value of work input by the refrigerator in each cycle,
[tex]W[/tex] =[tex]Q_{h}[/tex] - [tex]Q_{c}[/tex]
w = (465 j) -(257 j)
w= 208j
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Strictly speaking, more fuel is consumed by your car if the air conditioner, headlights, or even a radio is turned on. this statement is?
Strictly speaking, more fuel is consumed by your car if the air conditioner, headlights, or even a radio is turned on. this statement is true.
Fuel economy is the opposite of fuel consumption. It is the quantity of fuel used to travel a specific distance. In the United States, it is measured in gallons for every 100 miles, while in Europe and other parts of the world, it is measured in litres for every 100 kilometres.
To determine your car's fuel consumption, divide mileage by fuel consumption. You can see here how many miles per gallon of petrol you travelled. For instance, if you filled up your tank with 12 gallons of gas and drove 335 miles before refuelling, your fuel consumption would be 27.9 mpg (335 miles / 12 gallons = 27.9 mpg).
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If your car is moving at 100 km/hr, how many kilometers will your car travel in 15 minutes?
As volume is held constant and the temperature increases, how would the pressure be expected to change?
Gay Lussac's Law states that when a gas is held at a fixed volume, its pressure is exactly proportional to its Kelvin temperature. The molecules of a gas receive more energy when heated, causing them to move more quickly. This results in increased pressure and more impacts on the container's walls.
What do you understand by pressure?Pressure is the term used to describe the physical force exerted on an object. A perpendicular force is applied to the surfaces of the objects per unit area. F/A is the fundamental formula for pressure (Force per unit area)
This is based on the supposition that the force is applied perpendicular to the surface area. The pressure would rise proportionately if you exerted the same amount of force over a larger surface area. 5 Pa would be the force of 5 N applied over the same area of 1 square meter.
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what properties do all mechanical waves share?
To ensure the uniqueness of values in a nonprimary key column, use the ____ command to create an index.
To ensure the uniqueness of values in a nonprimary key column , use the Create Unique Index command to create an index.
What is refraction or index ?The ratio of the speed of light in a vacuum (c) to the speed of light in a medium (c') is known as the index of refraction (n). The propagation vector in the new medium has a different angle with respect to the normal as a result of this difference in speed when light travels from one medium to another at an angle.
The average value of units that are not homogeneous and may therefore be impacted by changes in the mix of items as well as by changes in their prices are measured by a unit value index, which is a "price" index.
Refractive index, commonly known as the index of refraction, is a measurement of how much a light beam bends when it passes through one medium and into another.
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The Earth's gravitational field strength, g = 9.81 N kg-1, is also sometimes given as the acceleration due to gravity, g = 9.81 m s-2. Show that these units are equivalent.
The units N kg-1 and ms^2 are equivalent.
What are dimensions?In physics, we often use the idea of dimension to establish the fact that a physical relationship is correct. It could also be used to obtain correct unit of a given physical quantity.
Now we have to obtain the dimensions of N kg-1 from the fact that;
N = Kgms^2 this implies that;
Kgms^2(kg-1) = ms^2
Hence, the units N kg-1 and ms^2 are equivalent.
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Answer:
Explanation:
dimensions of N kg-1 from the fact that;
N = Kgms^2 this implies that;
Kgms^2(kg-1) = ms^2
Hence, the units N kg-1 and ms^2 are equivalent.
determination of the size of molecule using oil drop experiment
Measurement of molecule size using an oil drop experiment
The volume of a tiny oil drop is determined by finding its radius, or r. Now that the oil drop is on the water's surface, it spreads out into an approximately circular region with a height h and radius R. The patch's diameter is determined, and from there, the radius R is calculated.
Up until the oil forms a monolayer, the oil drop expands, pushing the powder aside to form a clean circle. The thickness of the monolayer, which is the height of the oil drop molecule on the water, can be calculated by measuring the area of the monolayer and dividing the volume of the drop by that area.
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The dense atmosphere of venus is ________, causing most incoming solar radiation to be _________.
The dense atmosphere of Venus is light in color, causing most incoming solar radiation to be reflected.
What is the composition of atmosphere of Venus?The atmosphere of Venus is composed of carbon dioxide (CO2, 96,5 %) and nitrogen (N2, less than 3,5%) already represent more than 99,9% of the composition. Water Vapor is present in extremely low quantities, making Venus the driest planet of the solar system.
What is the effect of solar radiation on planet Venus?On Venus, only 10% of the incoming solar radiation reaches the surface; most of it is reflected back into space by the planet's dense cloud cover, making Venus appear to shine brightly in the night sky.
Despite the small amount of solar radiation reaching the surface, it is trapped effectively by gases in lower atmosphere, giving rise to the high temperatures.
Scientists think that the Venus was once more like the Earth, but at some point it started heating up uncontrollably. Any water that may have once existed in oceans on the surface evaporated into atmosphere causing further runaway heating.
It’s like Earth gone wrong with a runaway greenhouse effect that some planetary scientists say should be a warning as to what may become of our home planet if human activities – such as burning fossil fuels and destroying forests, which intensifies natural greenhouse effect – continue.
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Drag the tiles to the correct boxes to complete the pairs.
Recall how Newton’s investigation of light followed one form of the scientific method. Match the statements about Newton’s experiment with the steps in the scientific method.
Tiles
White light becomes a spectrum of seven
colored lights after passing through a prism.
What happens to a single color of light
when it passes through a prism?
A single color of light will not change
when it passes through a prism.
White light passes through a prism. A slit
is used to direct only the red light through
a second prism.
When the red light goes through a second
prism, its color does not change.
The hypothesis proposed for this experiment
is true.
The colors in a spectrum are part of white
light, and the prism separates them.
Pairs
Make an observation.
arrowBoth
Ask a question.
arrowBoth
Construct a hypothesis.
arrowBoth
Test the hypothesis with an investigation.
arrowBoth
Analyze the data.
arrowBoth
Confirm whether the hypothesis is true.
arrowBoth
Explain the results.
arrowBoth
Newton's optics experiment observation and intervention. In order to make his observations, Newton used the theory of light passing through prisms and the rays that were sent by them. It was revealed that light has a variety of properties and features.
Prisms, lenses, and optical rays were the basis of Newton's inquiry into light.According to him, different coloured lights had varying degrees of re-frangibility.Newton adopted the "Proof by Experiments" method to back up his theories. Each technique was chosen to highlight a particular quality of light.Newton found a phenomenon called the Newton rings.After pressing two prisms together, Newton saw that there was a translucent area.To learn more about light, visit :
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I added an image of the answers/ Hope this helps! good luck on it.
A typical galaxy contains 100 billion stars. express this in scientific notation.
A typical galaxy contains 100 billion stars - its scientific notation is x 10^11 stars.
What is typical galaxy?A world is a gravitationally bound arrangement of stars, heavenly leftovers, interstellar gas, residue, and dim matter. The word is gotten from the Greek galaxias, in a real sense 'smooth', a reference to the Smooth Way world that contains the Planetary group. Cosmic systems, averaging an expected 100 million stars, range in size from diminutive people with under a hundred million stars, to the biggest worlds known supergiant's with one hundred trillion stars, each circling its universe's focal point of mass. Our world, the Smooth Way, is normal: it has many billions of stars, enough gas and residue to make billions additional stars, and somewhere around tenfold the amount of dull matter as every one of the stars and gas set up. Also, it's completely kept intact by gravity. Like more than 66% of the known universes, the Smooth Way has a twisting shape.
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True or false the total torque on the loop is the same regardless of what is chosen as the position of the vertical axis of rotation
True the total torque on the loop is the same regardless of what is chosen as the position of the vertical axis of rotation.
What is torque?The term torque may also refer to the moment, moment of force, rotating force, or turning effect, depending on the topic of study.
In physics and mechanics, torque is the rotational equivalent of a force. It serves as an example of how a force can alter a body’s rotational motion.
Archimedes, who investigated the use of levers, is credited with creating the saying, “Give me a lever and a place to stand, and I shall move the Earth.”
Similar to how a linear force is either a push or a pull, a torque may be thought of as a twisting of an object about a specific axis. The sum of the force times its magnitude is the definition of torque.
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The vernal equinox is now just entering the constellation aquarius. In what constellation will it lie in the year a. D. 10000?.
The vernal equinox during the year 10000 AD will be in the Scorpio constellation
A complete cycle of precession is finished once every 25800 years. Because there are 12 constellations, it takes 2150 years to travel from one to the next. The vernal equinox travels from Aquarius to Sagittarius, Scorpio, Capricorn, Libra, etc.
The year is 2022 AD, and the vernal equinox has just entered the constellation Aquarius. It would have managed to enter the Capricorn constellation in 4172 AD, the Sagittarius constellation in 6322 AD, the Scorpio constellation in 8472 AD, and the Libra constellation in 10622 AD. This means that it remains in the constellation Scorpio in 10000 AD and has yet to enter the constellation Libra.
As a result, the vernal equinox during the year 10000 AD will be in the Scorpio constellation.
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How is the density of a fish controlled? how is the density of a submarine controlled?
The density of a fish is controlled by the expansion and contraction of its air sacs while the density of a submarine is controlled by ballast tanks. It was emphasized earlier that buoyant forces does not equal an objects weight but does equal the weight of displaced water.
What are mass, density, and volume ?The three most fundamental characteristics of an object are mass, volume, and density. Volume indicates something's size, mass indicates how heavy it is, and density is calculated as mass divided by volume. Although you deal with mass and volume on a daily basis, the concept of density is less clear-cut and requires careful consideration.
Mass divided by density equals volume; and. Volume times density equals mass. A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is more dense if you weigh two liquids with similar volumes or amounts.
The relationship between a substance's mass and the amount of space it occupies is known as its density (volume). The density of a substance is determined by the mass, size, and arrangement of its atoms.
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Cascading style sheet rules are comprised of: ________
a) elements and attributes
b) selectors and declarations
c) selectors and attributes
d) properties and declarations
Cascading style sheet(CSS) rules are comprised of selectors and declarations.
What is Cascading style sheet?When describing the display of a document published in a markup language like HTML or XML, Cascading Style Sheets (CSS) is the language utilized (including XML dialects such as SVG, MathML or XHTML). Along with JavaScript and HTML, CSS is a key component of the World Wide Web. Layout, color, and font customization are all possible with CSS, which is made to separate display from content. By defining the pertinent CSS in a separate file, this separation can make content more accessible, give definition of presentation characteristics more freedom and control, and allow numerous web pages to share formatting.
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Hardy-weinberg equilibrium requires that the population size is and that mating is:________
In order for Hardy-Weinberg equilibrium to exist, a large population size and random mating are necessary.
How does Hardy-Weinberg equilibrium differ depending on population size?Hardy-Weinberg equilibrium requires an extremely huge population, one of indefinite size. To counteract the effects of genetic drift, this condition is necessary.Genetic drift is defined as a shift in a population's allele frequencies that happens by chance rather than as a result of natural selection.In a Hardy-Weinberg equilibrium, does random mating occur?The Hardy-Weinberg Law asserts that both allele frequencies and genotype frequencies stay constant from generation to generation in a large, random-mating population that is not impacted by the evolutionary processes of mutation, migration, or selection.
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Which of the following describes the length of a football field using the metric system?
Disclaimer:
Rugby is known as the football in the United States of America
Soccer is known as football in United Kingdom and rest of the world.
The question is also incomplete as no options have been mentioned
A football field in United States of America is the field of rugby and its measurement in metric system is 91.44 meters in length and 64 meters in width
A soccer field as per the standards set by FIFA is 108 meters in length and 68 meters in width
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Which of these talents is an HR employee MOST likely to need?
A.
the ability to envision retirement
B.
an interest in how unions work
C.
the ability to work independently
D.
an interest in helping people
HELP PLEASE
A football is thrown on a long pass. compared to the ball's initial vertical velocity, the vertical component of its velocity at the highest point is __
A football is thrown on a long pass. compared to the ball's initial vertical velocity, the vertical component of its velocity at the highest point is less
What is velocity?Velocity is defined as a vector measurement of the rate and the direction of motion, simply, velocity is the speed at which something moves in one direction. The speed of a car traveling north on a major freeway and the speed a rocket launching into the space can both be measured using velocity.
The SI units for the velocity are m/s (meters per second), but velocity may also be expressed in any units of distance per time, and the other units include miles per hour (mph), kilometers per hour (k/h), and kilometers per second (km/s).
At highest point the velocity of football is 0 as it is neither moving up or moving down for a moment so it is less than initial velocity. Magnitude of initial and final velocity is maximum in projectile motion.
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What differentiable functions have an arc length on the interval [a,b] given by the following integrals? note that the answers are not unique. give all functions that satisfy the conditions.
The functions such as non-vertical, continuously differentiable, non-vertical tangent satisfy the conditions.
What are differentiable functions?In mathematics, a differentiable function of one real variable is a function that has a derivative at each point in its domain. In other words, the graph of a differentiable function has a non-vertical tangent line at each interior point in its domain.
A smooth, differentiable function lacks any breaks, angles, or cusps (it is locally well approximated as a linear function at each interior point).
If the derivative f'(x 0) exists, a function f is said to be differentiable at x0 if x0 is an inner point in the domain of the function.
In other words, the point (x0, f(x0)) on the graph of f has a non-vertical tangent line. If f is differentiable at every point along U, then U is said to be differentiable.
If the derivative off is also a continuous function over the domain of the function ff, then f is said to be continuously differentiable.
In general, if f’s initial k derivatives are f prime (x), f prime (x), and lots, f(k)(x), then f is said to be of class Ck. f prime (x), f prime (x), lots, and f (k) prime (x) exist and are continuous across the function’s domain.
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At speeds over 30 mph, you should maintain a following distance of at least ________ behind the vehicle ahead of you.
At speeds over 30 mph, you should maintain a following distance of at least three full seconds behind the vehicle ahead of you.
As a general rule and common sense at a speed of 30 mph you can leave three full seconds so that you can achieve a prudent distance between the car you are driving and the car in front in order to be able to perform some kind of maneuver if an accident or unforeseen event occurs.
To count the full three seconds you can use the technique of counting the Mississippis as follows: Mississippi one, Mississippi two, Mississippi three.
What is an accident?An accident is an unexpected event that generally causes damage, injury or negative consequences.
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Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0 m/s2. what will be the acceleration if you double your speed?
The acceleration if we double the speed is 27 m/s².
How to find the acceleration if we double the speed?
A centripetal acceleration, or acceleration toward the center of the circle, results from moving in a constant circular motion.
a = v²/r is the formula for calculating an object's circular motion acceleration.
Since the radius never changes, let's set it at 5 m. Using a = 3 m/s² and r = 3m to solve for the velocity, we get the following results:
Were, 3 = v²/3
simplifying the equation, we get
⇒ 9 = v²
⇒ 3 = v
When the circular path has a radius of 3 m and an acceleration of
3 m/s², the velocity is 3 m/s.
Now let's triple the velocity: 3 m/s → 9 m/s.
Let's solve for the acceleration using v = 9 m/s and r = 3 m.
a = (9)²/3
⇒ a = 81/3
⇒ a = 27
If you triple your speed, the acceleration is 27 m/s².
This makes sense because an is precisely proportional to v², which means that if your speed is tripled, your acceleration will increase by a factor of 3², or nine times.
a = 3 [tex]*[/tex] 9 = 27 m/s²
As a side note, doubling your speed would improve the acceleration by a factor of 2² - a 4 times increase.
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Astronauts brought back 500 lb of rock samples from the moon. how many kilograms did they bring back? 1 kg = 2.20 lb 227 kg 227 kg 498 kg 498 kg 500 kg 500 kg 1,100 kg
The correct option is (b) 227 kg.
The 500 lb rock samples the astronauts carried back from the moon weighed 227 kilograms.
Briefing :As with the end goal of exploring the New World, colonization, rather than just sitting back on Earth and contemplating what autonomous spacecraft report back, is the ultimate goal of going into space: to work and live there.It's one of the hardest jobs in the world to get. You are not almost certainly guaranteed to travel to space even if you are selected to be an astronaut.Many of the people selected to be "astronauts" never made it, despite the fact that hundreds of humans have visited space.The astronaut transported a 550 lb sample.
2.20lbs = 1 kilogram.
1 lbs = 1/2.20
Since, 1 lb = 0.45 kg,
500 lb almost equals 227 kg.
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What is the device called that uses special weights and magnetic fields to measure the movement of the ground?.
A seismograph is a device called that uses special weights and magnetic fields to measure the movement of the ground.
A seismograph is a particular device that records seismic waves caused by an earthquake, explosion, or other earth-shaking events. Seismographs have electromagnetic sensors that convert ground motions into electrical changes that are processed and recorded by the instrument's analog or digital circuits.
The terms "seismograph" and "seismometer" are frequently used interchangeably; however, while both devices can detect and measure seismic waves, only a seismograph can record them. A seismogram is a record produced by a seismograph on a display screen or paper printout.
Although originally designed to detect natural earthquakes, seismographs have a wide range of applications, including petroleum exploration, research into the Earth's crust and lower layers, and monitoring volcanic activity.
Seismographs are devices that record the movement of the ground during an earthquake. They are installed on the ground as part of a seismographic network all over the world.
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What fraction of the mass of the milky way galaxy is in a form that astronomers have been able to see?
The astronomers have been able to see a 10% of the milky way galaxy's mass
The Milky Way is a large spiral galaxy where the solar system and the Earth are located. It takes its name for the irregular luminous band of stars and gas clouds that stretches across the sky as seen from Earth. According to astronomers, it has a mass of 10¹² solar masses and, by its shape, it is a barred spiral galaxy.
What is the galaxy?It is a large area of gas, dust and billions of stars and their solar systems all held together by gravity that makes up a universe.
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There is a bell at the top of a tower that is 40m high. The bell weighs 12kg. The bell has ___________________ energy. Calculate it.
Answer:
Potential
Explanation:
hope this helps
An astronomer observes two ordinary stars. the first one turns out to be twice as hot as the second. this means that the first one radiates:________
Two common stars are observed by an astronomer. It turns out that the first one is twice as hot as the second. This indicates that the first emits around 16 times as much energy as the second.
Describe about astronomers?Astronomers are specialists in the field of astronomy, which is the study of celestial bodies and phenomena. They use various methods to explore and understand space beyond Earth, including using telescopes, satellites, and mathematical models.
They also compile data on different astronomical objects into comprehensive databases that can be used by researchers all over the world. This helps us to better understand our universe and how it works. Additionally, astronomers work towards developing new technologies that will help us probe further into space. As we continue to learn more about our galaxy and its many inhabitants, astronomers have a significant role to play in informing society about these discoveries.
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Collin is doing research on animals that camouflage to see what type of camouflage pattern is best for the military to use. what type of research is this? applied descriptive quantitative experimental
Answer: applied
Explanation:
The patagonia region of chile and argentina features a large, elongated glacier approximately 90 km (56 mi) wide and 360 km (224 mi) long. this is an example of a(n):_________
The Patagonia region of Chile and Argentina features a large, elongated glacier approximately 90 km (56 mi) wide and 360 km (224 mi) long. this is an example of a(n): Ice field
The Patagonia region of Chile and Argentina is characterized by the largest ice fields in South America.
An ice field is a large mass of ice that covers part of the land.
What is Patagonia?The Patagonia is an area located in South America which is shared by Chile and Argentina.
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35. Vector A has a negative x component 3.00 units in
M length and a positive y component 2.00 units in length.
According to the given statement the value of :
a - [tex]\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}[/tex]
b - θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰
c-[tex]\overrightarrow{\mathrm{B}}=3.00 \hat{\mathrm{i}}+6.00 \hat{\mathrm{j}}[/tex]
What purposes do vector?In science, anything that has both a direction and a magnitude is referred to as a vector. They are typically represented by pointing arrows, the length of which denotes the size of the vector.
Briefing:The component description of A is just restated to constitute the answer to part (a):
A[tex]_x[/tex] = -3.00 , A[tex]_y[/tex] = 2.00
(a) [tex]\overrightarrow{\mathrm{A}}=\mathrm{A}_{\mathrm{x}} \hat{\mathrm{i}}+\mathrm{A}_{\mathrm{y}} \hat{\mathrm{j}}=-3.00 \hat{\mathrm{i}}+2.00 \hat{\mathrm{j}}[/tex]
(b) [tex]|\overrightarrow{\mathrm{A}}|[/tex] = √(A[tex]_z[/tex]² + A[tex]_y[/tex]²) = √( (-3.00)² + (2.00)²) = 3.61
θ = tan -1 [tex]\left(\frac{\mathrm{A}_{\mathrm{y}}}{\mathrm{A}_{\mathrm{x}}}\right)[/tex] = tan-1 [tex]\left(\frac{2.00}{-3.00}\right)[/tex] = -33.7⁰
θ is in the second quadrant so θ = 180⁰ + (-33.7⁰) = 146⁰
(c) R[tex]_x[/tex] = 0, R[tex]_y[/tex] = -4.00 and [tex]\overrightarrow{\mathrm{R}}=\overrightarrow{\mathrm{A}}+\overrightarrow{\mathrm{B}}[/tex] thus [tex]\overrightarrow{\mathrm{B}}=\overrightarrow{\mathrm{R}}-\overrightarrow{\mathrm{A}}[/tex] and
B[tex]_x[/tex] = R[tex]_x[/tex] -A[tex]_x[/tex] = 0-(-3.00) = 3.00,
B[tex]_y[/tex] = R[tex]_y[/tex] - A[tex]_y[/tex] = -4.00-2.00= -6.00
therefore [tex]\overrightarrow{\mathrm{B}}=3.00 \hat{i}+6.00 \hat{j}[/tex].
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The complete question is -
Vector A has a negative x component 3.00 units in length and a positive y component 2.00 units in length. (a) Determine an expression for A in unit-vector notation. (b) Determine the magnitude and direction of A. (c) What vector B when added to A gives a resultant vector with no x component and a negative y component 4.00 units in length.
On mars, the acceleration due to gravity is 3.77 m/s2. how far would a 47 g rock fall from rest in 6.5 s if the only force acting on it was the gravitational force due to mars?
On mars the rock that fall from rest in 6.5 s with an acceleration due to gravity of 3.77 m/s² would far a distance of: 79.64125 m
The free fall formula and the procedure we will use is:
h = (g * t²)/2
Where:
g = acceleration due to gravityt = timeh = height traveledInformation of the problem:
g = 3.77 m/s²t = 6.5 sh =?Applying final height formula we get:
h = (g * t²)/2
h = (3.77 m/s² * (6.5 s)²)/2
h = (3.77 m/s² * 42.25 s²)/2
h = 159.2525 m/2
h = 79.64125 m
What is free fall?It is when the object or mobile falls from a height (h) with a positive acceleration equal to the gravity, describing a vertical rectilinear travel.
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