you research the star sirius and find that its spectral lines are blue-shifted. what does this tell you about sirius?

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Answer 1

You research the star sirius and find that its spectral lines are blue-shifted.  Its surface temperature is higher than that of the sun. option a)

The brightest star in the night sky is Sirius. Its name is a translation of the Greek word o, or Seirios, which means "glowing" or "scorching." Canis Majoris, Latinized as Alpha Canis Majoris, and abbreviated as CMa or Alpha CMa are all names for the star.

The next brightest star, Canopus, is not far behind Sirius in terms of brightness, with a visual apparent magnitude of 1.46. A main-sequence star of spectral type A0 or A1, known as Sirius A, and a weak white dwarf companion of spectral type DA2, known as Sirius B, make up Sirius, a binary star.

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Full Question :You research the star Sirius and find that its spectral lines are blue-shifted. What does this tell you about Sirius?

a. Its surface temperature is higher than that of the sun.

b. It has a transverse velocity that is toward us.

C. It has a radial velocity that is toward us.

d. It has a radial velocity that is away from us.

e. It has a transverse velocity that is away from us.


Related Questions

the difference in arrival times of ________-waves & ______-waves reflects the distance of an earthquake from a seismic station.

Answers

The difference in arrival times of P-waves & S-waves reflects the distance of an earthquake from a seismic station.

What is earthquake explain?

An earthquake is a tremor caused by the sudden movement of rock materials beneath the earth's surface. Earthquakes are caused by the movement of tectonic plates.

P-waves (primary waves) are the first waves to arrive at a seismic station and can travel through solid and liquid materials. S-waves (secondary waves) arrive after P-waves and can only travel through solid materials. The speed of both P-waves and S-waves is affected by the density and elasticity of the material they travel through, with S-waves traveling slower than P-waves.

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as described in the selection from life on the mississippi, what did the mississippi river represent to twain as a boy?

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Answer:

In this excerpt from "Life on the Mississippi," Mark Twain describes the Mississippi River as a source of wonder and fascination for him as a child. The river represented an almost magical world full of adventure and excitement to Twain. He was captivated by the river's size and power, and he marveled at the massive steamboats that plied its waters.

Twain aspired to be a steamboat pilot as a child, and he spent many hours observing and learning everything he could about the river. He was mesmerized by the river's ever-changing nature, and he learned to navigate its twists and turns, shifting sandbars, and hidden dangers.

The Mississippi River was a symbol of freedom and possibility for Twain, representing the vast, unexplored world beyond his small town. He saw it as a doorway to adventure, a way to escape the confines of his daily life. And as he grew older and realized his dream of becoming a steamboat pilot, the river remained a constant source of fascination and inspiration for him.

greenhouse gases include all of the following. which gas is thought to have the greatest effect on global warming or increasing global temperatures? A. CO2 B. H2O C. O2

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Option A, The greenhouse gas carbon dioxide, which has the chemical formula CO2, is regarded to have the largest impact on global warming or rising global temperatures.

While carbon dioxide (CO2) and water vapor (H2O) both contribute to global warming, carbon dioxide does have a longer residence time in the atmosphere than water vapor.

Moreover, human activities like the combustion of fossil fuels have greatly raised the atmospheric carbon dioxide content, which is a factor in the Earth's surface warming.

Since it does not absorb and then re-emit infrared light, which is a major attribute of greenhouse gases, oxygen (O2) is not regarded as a greenhouse gas.

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what type of parent body must carbonaceous chondrite meteorites come from?

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The parent body from which the carbonaceous chondrite meteorites come from diverse asteroids.

A chondrite is basically a stony as well as a non-metallic meteorite which has not been modified by either differentiation or the melting of the parent body. They are basically formed when the different types of dust as well as the small grains which are present in the early Solar System accreted in order to form the primitive asteroids.

The chondritic meteorites basically comprise of about 8 known groups as well as some of the ungrouped meteorites. They happen to include some of the most primitive known meteorites.

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what will happen if a parcel of air is colder than surrounding air?

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Answer: Because the air parcel remains cooler/denser than the surrounding air, it will tend to resist any upward movement on its own and, if permitted, it will return to its original position. Such air has a negative buoyancy. 04. An Unstable Atmosphere.

Explanation:

as a huge rotating cloud of particles in space gravitate together forming an increasingly dense ball, it shrinks in size and rotates slower. true or false.

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The given statement "As a huge rotating cloud of particles in space gravitate together forming an increasingly dense ball, it shrinks in size and rotates slower." is true as due to the conservation of the angular momentum, the cloud rotates slowly and becomes smaller in size.

Conservation of angular momentum is basically a fundamental principle of physics according to which, in the absence of any kind of external torque, the total angular momentum of a particular system happens to remain constant.

Due to this conservation of angular momentum, as the cloud becomes smaller in size, it rotates slowly. As the cloud is getting contracted under the force of gravity, the particles keep getting closer to each other and this reduces the size of the cloud and it then rotates slowly.

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In what ways did the societies of the Aegean initially resemble those of Polynesia?
a. Both failed to develop craft specialization.
b. Both were fragmented and decentralized.
c. Both integrated chains of islands into mainland culture.
d. Both were conquered by the territorial states.

Answers

The answer is (c) Both integrated chains of islands into mainland culture.

The societies of the Aegean and Polynesia both integrated chains of islands into their respective mainland cultures. In the Aegean, the Minoan and Mycenaean cultures integrated the Cycladic and Aegean islands into their trading networks and political systems.

In Polynesia, the cultures of the Pacific islands integrated chains of islands, such as Samoa, Tonga, and Hawaii, into their social, economic, and political systems. While the societies of the Aegean and Polynesia had their own unique characteristics and developments, they both shared a similar pattern of island integration into mainland culture.

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What do geologists look for when observing a rock sample?

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Geologists examine a rock sample to determine its mineral makeup, color, and structure. Mineral and other elements are combined to form rocks.

They might also try to find solutions to issues brought on by environmental threats like erosion and flooding. Geologists research the components, mechanisms, and past of the planet. They look into the formation of rocks and what has occurred to them since then. Numerous colleges and universities have science or geology departments that train students for jobs in the field. These require the faculty to have qualified professionals who can teach geology classes. There are several titles for departments, including Earth Science and Geoscience. By enrolling in foundational math, science, and geography classes, students who are interested in geology can get ready. No academic subject is easier or more difficult to acquire than geology. But if you want to succeed in the field, it is a science and takes effort and commitment.

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a triple junction is . multiple choice question. a place within a divergent fault that has subducted beneath two other mid-ocean ridges a place along a mid-ocean ridge with three volcanoes a place where three plate boundaries meet

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Answer:A triple junction is a place where three plate boundaries meet. This can occur where three tectonic plates come together, or where two plates diverge and create a boundary, and a third plate moves in to interact with the other two plates. Triple junctions can be found both on land and in the ocean, and they are important features in plate tectonics, as they can influence the movement and deformation of the Earth's crust in the surrounding areas.

Explanation:

when in the year do greenhouse gases have the largest effect on temperature? the winter or summer?

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Although greenhouse gases' impact on temperature is generally constant throughout the year, there are some seasons or times of day when it may be more noticeable.

Because they trap more of the sun's energy and prevent it from escaping into space during the winter, when the days are shorter and the sun is lower in the sky, greenhouse gases can have a greater effect on temperature. This may result in warmer temperatures, especially in areas that frequently experience harsh winters.

However, greenhouse gases can also significantly affect temperature during the summer, when the days are longer and the sun is higher in the sky, by trapping more of the sun's energy and raising temperatures.  

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From 2000 to 2012, which of the four domains experienced the greatest total forest gain? a. Boreal b.Temperate c.Subtropical d.Tropical

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Answer:

D Tropical

Explanation:

What causes stratospheric ozone depletion and why should it be addressed?

Answers

The primary contributors to stratospheric ozone depletion and the ozone hole are synthetic chemicals, particularly halocarbon refrigerants, solvents, propellants, and foam-blowing agents (chlorofluorocarbons), HCFCs.

A combination of anthropogenic emissions of ozone-depleting compounds, steady circulation patterns, extremely cold temperatures, and solar radiation are to blame for the catastrophic ozone depletion in polar areas.

A global agreement known as the Montreal Protocol was made in 1987 to safeguard the stratospheric ozone layer by gradually banning the manufacture and use of chemicals that deplete the ozone layer (ODS). Invest in cooling and refrigeration equipment that doesn't utilise HCFCs as a refrigerant. Purchase aerosols that don't include HCFCs or CFCs as propellants. Refrigeration and air-conditioning equipment should be regularly inspected and maintained to avoid.

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Which air mass or masses allow for sleet and freezing rain to develop in our area?

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The air mass or the masses that allow for sleet and the freezing rain to develop in our area is mP and mT.

The different types of the air masses are as : the Maritime Tropical that is mT air masses are the warm, the humid air masses that is originating from the oceans of the tropics. The other is the Maritime Polar that mP air masses are the cold, the humid air masses that is originating from the oceans for the polar latitudes.

The  sleet are the partly melted falling snow or the hail that is the  partly frozen rain.

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which of these is an element commonly found in solid form within earth’s crust?a. oxygenb. siliconc. calcium d. sodium

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The correct answer is (b) silicon, which is one of the most abundant elements in the Earth's crust, making up around 28% of its composition.

Silicon is the second most abundant element in Earth's crust after oxygen, making up approximately 28% of its mass. It is a metalloid and has unique properties that make it a useful element for a variety of applications, including in the semiconductor industry and for making glass. Silicon is also an important component of many minerals found in the crust, such as quartz and feldspar. Oxygen is also found in solid form within the Earth's crust, but it is typically bound with other elements to form oxides, such as iron oxide (FeO) and aluminum oxide (Al2O3). Calcium and sodium are also present in the crust, but they are typically found in the form of minerals or compounds, rather than as pure elements. Calcium, for example, is commonly found in the form of calcium carbonate (CaCO3), which makes up limestone and marble. Sodium is commonly found in the form of sodium chloride (NaCl), or table salt, which is found in many sedimentary rocks.

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Choose the best answer. Nuclear power plants produce electricity using energy from the radioactive decay of (a) uranium-235. (b) uranium-238. (c) plutonium-235.

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Nuclear power plants happen to produce the electricity by using the energy through radioactive decay of the Uranium-235.

The correct option is option a.

Nuclear energy is basically a form of energy which is released from the nucleus, which is basically the core of atoms and is made up of protons as well as neutrons. This energy is produced in the nuclear power plants.

Uranium-235 is used to produce electricity in the nuclear power plants. Uranium ores also contain Uranium-238 in about 99% of their composition. This isotope of uranium is not used in nuclear power plants as it does not show fission easily when compared to Uranium-235.

The heat which is created by splitting of the U-235 atoms gets used to produce steam which which is able to spin a turbine in order to drive a generator thereby producing electricity.

Hence, the correct option is option a.

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create a migration story

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Become ready.

Think about the people.

Describe the situation.

transcend stereotypes

An immigration tale is what?

Recent immigrants and refugees can make digital stories—short movies with photographs, text, and audio—about their personal experiences with the aid of Immigrant Tales. Through the IHRC Archives, University Libraries, and the Digital Public Library of America, the IHRC shares and protects these digital stories for future generations.

Describe migration and provide some examples.

The movement of either humans or animals from one place to another is known as migration. On its way to Mexico, a Monarch butterfly may be seen resting in the woods, so keep an eye out for it. Migration can refer to both mobility and the process of traveling from one location to another.

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which of these u.s. government agencies forecast weather and monitors ocean conditions?

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Two U.S. government agencies that are responsible for forecasting weather and monitoring ocean conditions are the National Oceanic and Atmospheric Administration (NOAA) and the National Weather Service (NWS).

NOAA is an agency within the Department of Commerce that is responsible for providing weather and climate forecasts, as well as information about ocean conditions, fisheries, and coastal ecosystems. NOAA also manages and conducts research on a range of environmental issues, including climate change, ocean acidification, and natural hazards.

The NWS is a division of NOAA that is specifically focused on providing weather forecasts and warnings to the public. The NWS operates a nationwide network of weather observation stations, as well as satellites and other advanced technologies, to monitor and predict weather patterns across the country.

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how big is alaska when compared to texas?

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The state of Alaska is about 2.5 times bigger as compared to the state of Texas.

Alaska is by far the biggest state which is present in the USA. It is 665,384 square miles of land which rich and broad and has produced about billions of dollars of gold and also fish, furs, oil and timber. Alaska is uncrowded, unspoiled, and is vibrant with potential as well as promise.

Alaska is about 665,384 square miles in size. The state of Texas is about 268,596 square miles. This makes Alaska about 2.5 times bigger than Texas. Although, the population density in Texas is much higher as compared to Alaska.

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the __________ line is an imaginary line at which the snow never melts.

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The Snow line is an imaginary line at which the snow never melts.

It describes a hypothetical line on a mountain or glacier above which snow and ice never fully melt, even in the hottest months of the year. Latitude, elevation, and regional climate conditions are just a few examples of the variables that affect the snow line's precise elevation. The snow line distinguishes between habitats and ecosystems that are adapted to snow and ice and those that are not, making it a crucial ecological and geological boundary.

the lower topographic limit of a permanent snow cover is called the snow line. When melting and evaporation (melting and ablation) equal accumulation of snowfall, an irregular line known as the snow line is formed along the ground's surface. This line has wide altitude variations and is subject to numerous factors.

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the volcanoes in the ring of fire are generally described as what?

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The volcanoes in the ring of fire are generally described as being explosive.

The Ring of Fire is an area around the Pacific Ocean where tectonic plates meet, resulting in a high concentration of volcanic activity and earthquakes. The volcanoes in the Ring of Fire are known for their explosive eruptions, which can send ash, gas, and lava high into the air. This is due to the fact that the magma that forms in this region tends to be more viscous, or sticky, and contains more gas than the magma that forms in other areas. As a result, pressure can build up inside the volcano until it erupts violently. Some of the most well-known volcanic eruptions in history have occurred in the Ring of Fire, such as the 1980 eruption of Mount St. Helens in Washington state, USA, and the 1883 eruption of Krakatoa in Indonesia. The volcanic activity in the Ring of Fire has also created many of the world's largest and most fertile islands, such as Japan and Indonesia.

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what landform in the desert southwest limits the amount of rainfall throughout the year?

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Mountain landform in the desert southwest limits the amount of rainfall throughout the year.

They typically have high points known as peaks or summits, steep, sloping sides, and sharp or rounded ridges. A mountain is typically defined by geologists as a landform that rises at least 1,000 feet (300 metres) above its surroundings. A group of closely spaced mountains is referred to as a mountain range.

A mountain is an elevated area of the crust of the Earth, typically with steep sides that reveal a substantial amount of bedrock that has been exposed. Although definitions vary, a mountain is normally taller than a hill, rising at least 300 metres (1,000 feet) above the surrounding land. A mountain may also differ from a plateau in having a small summit area. Most mountains are found in mountain ranges, while a handful have isolated summits.

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Which of the following shows why square LMNO is congruent to square L'M'N'O'?
A.
The square was rotated 90° counterclockwise about the origin and reflected across the y-axis.
B.
The square was rotated 90° counterclockwise about the origin and reflected across the x-axis.
C.
The square was rotated 180° counterclockwise about the origin and reflected across the y-axis.
D.
The square was rotated 180° counterclockwise about the origin and reflected across the x-axis.

Answers

The correct answer is C. When a figure is rotated 180° counterclockwise about the origin and reflected across the y-axis, the figure is congruent to its original. This is because the distance between any two points on the figure is still the same and all angles in the figure are still the same. Therefore, square LMNO is congruent to square L'M'N'O'.

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The difference between reserves and resources is ____________.
a. Resources exist where as reserves are only thought to exist
b. Reserves are the amount that can be mined today for a profit
c. Resources are the amount that can be minded today for a profit
d. None, they are the same

Answers

The correct answer is (b) Reserves are the amount that can be mined today for a profit, while resources are quantities of minerals or fossil fuels that are believed to exist in a given location, but are not yet proven to be economically viable to extract.

In other words, resources are potential sources of raw materials or energy that may be present in the earth's crust or other geological formations, while reserves are the quantities of those resources that are currently known to exist and can be extracted with existing technology and under current economic conditions.

The term "reserves" is typically used in the mining and oil and gas industries to refer to the estimated quantities of minerals or fossil fuels that can be extracted from a given deposit or field, while "resources" refers to the total estimated quantity of those materials that may be present in that location, regardless of their economic viability.

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Find newspaper or magazine articles this week about the United Nations. At the end of the week, write a brief summary about the many activities of the U.N in the world today.

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The UN promotes and strengthens democratic institutions and practices all across the world, particularly by encouraging voters in multiple countries to participate in free and fair elections.

What is elections?

An election is the formal method by which a population selects a person or people to participate in government. It is a communal decision-making process.

Since the 17th century, elections have been the most common method for modern representative democracy. Legislative, executive, judicial, and occasionally regional and municipal positions may be filled through elections.

This procedure is utilized by numerous additional private and commercial organizations, including clubs, nonprofit organizations, and corporations.

In contrast to the widespread use of elections as a tool for choosing representatives in contemporary representative democracies, elections were regarded as an oligarchic institution in the democratic archetype of ancient Athens.

Sortition, also known as disbursement, was used to fill the majority of political positions.

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what is shales parent rock

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Fine-grained mud and clay particles are compacted and lithified to form the sedimentary rock known as shale. Shale's parent rock is typically mudstone, a type of sedimentary rock with extremely fine-grained particles smaller than those in sandstone or conglomerate.

In lacustrine (lake) or marine environments, mud and silt build up to form mudstone.

The weight of the sediment that lies above compacts the mud and silt over time, causing it to solidify and transform into rock. Through the process of diagenesis, the mudstone can change into shale when subjected to higher pressures and temperatures.

Depending on the specific geological conditions, shale can also develop from other types of sedimentary rocks, such as siltstone or claystone.

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what is the landscape of central asia

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Answer:

arid since its in the desert.

Explanation:

i need an answer quick please!!!

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Lines of latitude are imaginary lines that run horizontally around the Earth, parallel to the equator. Lines of longitude are imaginary lines that run vertically around the Earth, from the North Pole to the South Pole.

Rank the following objects in order of their circular speeds from smallest to largest. a. An object with a mass of 20 kg. orbiting the Earth one-quarter of the way to the Moon b. An object with a mass of 15 kg. orbiting Earth at the same distance as the Moon An object with a mass of 5 kg, orbiting c. Earth halfway to the Moon An object with a mass of 10 kg. orbiting Earth just above Earth's surface Largest

Answers

The Moon has a mass of about 8.1 x 1019 masses (7.3 x 1022 kg or.01 times the mass of the Earth).

The following objects are in order from smallest to largest -                          c) Earth halfway to the Moon An object with a mass of 10 kg. orbiting Earth just above Earth's surface Largest.                                                                                    a) An object with a mass of 20 kg. orbiting the Earth one-quarter of the way to the Moon.                                                                                                                                  b) An object with a mass of 15 kg. orbiting Earth at the same distance as the Moon An object with a mass of 5 kg, orbiting

]The moon's mass is 7.35 x 1022 kg or 1.2% of the mass of the Earth. To put it another way, the Earth weighs 81 times more than the moon. The moon's density is 3.34 grams per cubic centimeter (g/cm3). Its density is roughly 60% of that of the planet Earth. The Sun contains around 27 million times more matter than the Moon. This gravitational interaction causes the Earth to orbit the Sun, while the Moon's small pull only minimally alters the Earth's speed.

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The idea that a person’s dominant hemisphere influences their creativity or ability to think logically is:__________

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The idea that a person’s dominant hemisphere influences their creativity or ability to think logically is: a popular myth about lateralization. option d)

As a result, a hemisphere is a 3D geometric object consisting of one half of a sphere, one of which is flat and the other of which has the shape of a bowl. The northern and southern hemispheres, a bowl, mushrooms, and other objects are some of the most typical instances of hemispheres.

The term "hemisphere" is derived from Greek and combines the word hemi-, which means "half," and sphere, which means "completely round ball." The northern and southern hemispheres of the globe are described as being separated at the equator (or divided at the prime meridian into eastern and western hemispheres).

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Full Question: The idea that a person's dominant hemisphere influences their creativity or ability to think logically is ?

a. important for teachers to consider when working with children who have learning disabilities.

b. supported by the evidence that most left-handed individuals are employed as artists or musicians.

C. supported by the research findings on split-brain operations.

d. a popular myth about lateralization.

where is this monument designed to look like a castle?

Answers

The monument in Spain that is designed to look like a castle is  located in the city of Granada.

The Nasrid dynasty, the last Muslim dynasty to conquer Spain, constructed the palace and fortress complex known as the Alhambra in the 14th century. It is also known for its unusual Islamic architecture, which includes exquisite tilework, complicated geometric designs, and horseshoe arches.With strong walls and towers enclosing lush gardens, courtyards, and ornate chambers, the Alhambra was intended to serve as both a protective castle and an opulent palace. It also resembles a castle because of its conspicuous position atop a hill overlooking the city of Granada. A well-known tourist destination and UNESCO World Heritage Site, the AlhambraIt is regarded as one of the best examples of Islamic architecture in the world.

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Other Questions
Could someone help me with part A, please, thanks! :) which of the following is equal to 96 divided by long division? A landscaping company charges $110 for 4 hours of lawn care. They charge the same amount of money for every hour.Which table represents the relationship between hours of lawn care and the amount of money the company charges?ResponsesHours of lawn care Amount charged (dollars)8 $22010 $27512 $33014 $385Hours of lawn care Amount charged (dollars) 8 $220 10 $275 12 $330 14 $385 ,Hours of lawn care Amount charged (dollars)2 $1104 $1656 $2208 $275Hours of lawn care Amount charged (dollars) 2 $110 4 $165 6 $220 8 $275Hours of lawn care Amount charged (dollars)4 $1105 $1156 $1217 $128Hours of lawn care Amount charged (dollars) 4 $110 5 $115 6 $121 7 $128Hours of lawn care Amount charged (dollars)3 $1104 $1105 $1106 $110Hours of lawn care Amount charged (dollars) 3 $110 4 $110 5 $110 6 $110 in what way did the english monarchy differ from other european monarchies after the glorious revolution? what are two functions of end devices on a network? (choose two.) Energy of an object by virtue of its position is called _____________.A. Solar energyB. Mechanical energyC. Muscular energyD. Potential energy a defendant is found guilty of a misdemeanor. on what grounds must a court grant a new trial? find the acceleration of the elevator (magnitude and direction).express your answer with the appropriate units. enter positive value if the direction of the acceleration is upward and negative value if the direction of the acceleration is downward. You are thinking of conducting a one-sample t test about a population meanusing a 0.05 significance level. Which of the following statements is correct? (a) You should not carry out the test if the sample does not have a Normal distribution. (b) You can safely carry out the test if there are no outliers, regardless of the sample size. (c) You can carry out the test if a graph of the data shows no strong skewness, regardless of the sample size. (d) You can carry out the test only if the population standard deviation is known. (e) You can safely carry out the test if your sample size is at least 30. 5. Pilihan ganda1 minute1 ptQ. Which of these is the defining characteristic of a federal system of government? Pilihan jawabanElected representatives make decisions for the nation.Power is divided between central and regional bodies.Separate branches have different areas of responsibilityLegislative actions are limited by a set of written guidelines. The table below completes observations collected for 3 different cells. Which of these correctly identifies the two cells describes in the table A Both cell 1 and cell 2 are eukaryotic B both cell 1 and cell 2 are prokaryotic C cell 1 is eukaryotic and cell 2 is prokaryotic D Cell 1 is prokaryotic and cell 2 is eukaryotic FILL IN THE BLANK. winds occur when a stagnant high-pressure air mass flows downslope from a mountain range and descends as a warm, dry wind toward a low-pressure zone. In a 42 s interval, 597 hailstones strike a glass window of area 0.597 m2 at an angle 50 to the window surface. Each hailstone has a mass of 6 g and speed of 6.3 m/s. If the collisions are elastic, find the average force on the window.Answer in units of N. what is individualism vs collectivism ? what is the definition of a program? normative statements describe how the world is, while positive statements prescribe how the world should be. the primary source of rbcs in the adult human being is the bone marrow in the shafts of the long bones. T/F what does it mean when an observational study is retrospective? what does it mean when an observational study is prospective? The Catholic church dramatically pushed the sale of indulgences in the sixteenth century because of thePilihan jawabanneed to raise funds for the construction of St. Peter's basilica.need to match the resurgence of the Byzantine empire.need for Henry VIII to pay off the national debt.threat posed by Islam. frederick douglass was an advisor to what president during the civil war?