Answer:
guys the answer to the question is given by 33=7+13+ b
b=33-20=13
For below problems, express your answer in scientific notation and with units where appropriate. Show all work to get credit. Use the solar system data sheet.
Universal Gravitational Constant: G = 6.674 x 10-11 m^2/(kg∙s^2 )
A star you are observing from the Earth is found to have a parallax of 0.5 arcsec. How far away is this star?
What is the force of gravity between you and the white dwarf Sirius B? The mass of Sirius B is about 1.02 times the Sun. Assume its radius is same as the Earth. How does this result compare to the force of gravity between you and the Earth which you calculated in Homework 5? What do you think will happen to you if you visited such a place?
To find the distance to the star with a parallax of 0.5 arcsec, we can use the formula:
Distance (in parsecs) = 1 / Parallax (in arcsec)
Distance = 1 / 0.5 = 2 parsecs
To convert parsecs to meters, we use the conversion factor:
1 parsec = 3.086 x 10^16 meters
Distance = 2 parsecs x 3.086 x 10^16 meters/parsec = 6.172 x 10^16 meters
The force of gravity between two objects can be calculated using Newton's law of gravitation:
Force = (G * Mass1 * Mass2) / Distance^2
For the force of gravity between you and Sirius B:
Mass1 = Your mass (assume a value)
Mass2 = Mass of Sirius B = 1.02 * Mass of the Sun = 1.02 * 1.989 x 10^30 kg
Distance = Radius of Sirius B = Radius of Earth = 6.371 x 10^6 meters
Let's assume your mass is 70 kg:
Force = (6.674 x 10^-11 m^2/(kg∙s^2) * 70 kg * (1.02 * 1.989 x 10^30 kg)) / (6.371 x 10^6 meters)^2
Calculating this value gives:
Force = 1.196 x 10^22 N
To compare this with the force of gravity between you and the Earth, you would need to calculate the force using the same formula but with the mass of the Earth and the distance between you and the Earth.
If you were to visit a place with such a strong gravitational force as near Sirius B, you would experience an extremely strong gravitational pull. Your weight would be significantly greater, making it difficult to move or even stay upright. The conditions near a white dwarf are extreme and inhospitable for human life.
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CO2 dissolves in water in the atmosphere to produce bicarbonate ion (HCO3 and carbonic acid (H*). Carbonic acid reacts with
silicate minerals in rocks in the process of chemical weathering. How are these chemical reactions related to climate?
A. Bicarbonate ion in the atmosphere is a greenhouse gas
B• Chemical weathering releases heat into the lower atmosphere.
c• Chemical weathering adds CO2 to the atmosphere when bicarbonate ion reacts with minerals in rock.
d• Chemical weathering removes CO2 from the atmosphere converting it to bicarbonate ion in the oceans.
A. The presence of bicarbonate ions in the atmosphere is directly related to climate as bicarbonate ions are considered greenhouse gases.
Greenhouse gases trap heat in the atmosphere, contributing to the greenhouse effect and global warming. Therefore, the dissolution of CO2 in water to produce bicarbonate ions plays a role in climate change.
B. Chemical weathering, including the reaction of carbonic acid with silicate minerals, does not release heat directly into the lower atmosphere. Instead, it involves the breakdown of minerals and their transformation into different compounds. While the process of chemical weathering may indirectly affect climate through its impact on the carbon cycle, it does not directly release heat into the lower atmosphere.
C. Chemical weathering does add CO2 to the atmosphere when bicarbonate ions react with minerals in rocks. This occurs through a series of chemical reactions where CO2 is released during the breakdown of minerals. The released CO2 then enters the atmosphere, contributing to the overall carbon dioxide levels and potentially impacting climate.
D. Chemical weathering actually removes CO2 from the atmosphere, converting it to bicarbonate ions in the oceans. When carbonic acid reacts with silicate minerals, it undergoes chemical weathering and forms bicarbonate ions.
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what event ended the transportation of felons to north america
Answer: ended abruptly in 1776 when the Revolutionary War began.
Explanation:
The event that ended the transportation of felons to North America was the American Revolutionary War.
Prior to the war, Britain had been transporting convicts to North America as a form of punishment and to alleviate overcrowding in British prisons. The culture of British and America is totally different. However, with the outbreak of the Revolutionary War in 1775 and the subsequent loss of British control over the American colonies, the transportation of felons to North America came to an end. After the war, Britain had to find alternative methods of dealing with its convicted criminals and eventually turned to other locations such as Australia for penal transportation.
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how many basic states of soil exist? select one: a. 5 b. 6 c. 2 d. 3 e. 4
Answer:
E. There are 4 states.
Explanation:
Solid State: This refers to soil in a dry and solid form. In this state, the soil particles are packed closely together with minimal or no water content.
Liquid State: This refers to soil that is saturated with water. In the liquid state, the soil particles are separated by water, and the soil behaves like a fluid.
Plastic State: This refers to soil that has some water content but is not fully saturated. In the plastic state, the soil can be molded or shaped, and it exhibits a degree of plasticity.
Semi-solid State (Semi-liquid State): This refers to soil that has a higher water content than the plastic state but is not fully saturated. In this state, the soil appears soft and exhibits a higher degree of liquidity compared to the plastic state.
The number of basic states of soil can vary depending on the classification system being used. However, if we consider the commonly recognized basic states of soil, the answer would be (d) 3.
The three basic states of soil are: 1. Solid state: Soil particles are tightly packed together, and there is minimal movement or flow of water or air through the soil. 2. Liquid state: Soil is saturated with water, and the void spaces are filled with water. The soil behaves like a liquid, and water can flow through it. 3. Gas state: Soil is filled with air, and the void spaces are occupied by air. The soil behaves like a gas, and air can freely move through it.
These basic states represent the different conditions in which soil can exist, ranging from solid to liquid to gas, depending on the presence of water and air.
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Climate change, together with anthropogenic influence, is transforming some non-desert areas around the globe into deserts. What is this process called?
Select one:
a)
Deflation
b)
Desert spreading
c)
Desertification
d)
Groundwater depletion
e)
Desert varnish
f)
Dry-up
g)
Shift in climate
The process of non-desert areas being transformed into deserts due to climate change and anthropogenic influence is called **desertification**.
Desertification refers to the degradation of land in arid, semi-arid, and dry sub-humid areas, leading to the expansion of desert-like conditions. It involves the loss of vegetation, soil erosion, and a decrease in water availability, resulting in the conversion of productive lands into arid or barren landscapes.Climate change exacerbates desertification by altering precipitation patterns, increasing temperatures, and intensifying droughts. Human activities, such as deforestation, unsustainable land use practices, and overgrazing, also contribute to the process. Desertification has detrimental impacts on ecosystems, biodiversity, livelihoods, and food security, making it a significant environmental and socio-economic concern.
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what is the operational definition for the rate of transpiration
RThe operational value for rate of transpiration is defined as amount of the water lost over time by the plants which depends on some of the biotic and abiotic factors.
Plants also sweat and this is what basically transpiration is. Plants use their roots to water and nutrients from the ground, for cellular processes but some of the water goes into the air too through the leaves.
Plants losses water through small pores usually present on its leaves. Transpiration is an invisible process that as water droplets can not be seen due to the extreme small size of the particles of water, like sweating in humans.
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To answer this question, we first need to define transpiration. Transpiration is the process by which plants release water vapor into the atmosphere through small pores in their leaves called stomata. This is an important process for plants as it helps them regulate their internal temperature and maintain a steady water balance.
The rate of transpiration is a measure of how quickly water is being lost from a plant's leaves through transpiration. It is typically expressed in units of mass per unit area per unit time, such as grams per square meter per hour.
The operational definition for the rate of transpiration would involve measuring the amount of water lost from a plant over a given time period. This can be done using a variety of methods, such as weighing the plant before and after a period of time or using a device called a porometer to measure the rate of water loss from the leaves directly.
It is important to note that the rate of transpiration can vary depending on a number of factors, such as temperature, humidity, and wind speed, as well as the type of plant and its stage of growth. Therefore, it is important to control for these variables when measuring the rate of transpiration in order to get an accurate measurement.
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What is the other name for diagonal joints? Select one: O A inclined jointsB O Strike joints C O Dip joints D Oblique joints
The other name for diagonal joints is Oblique joints.
These joints are inclined at an angle to the bedding or foliation planes and do not follow the strike or dip of the rock layers. Diagonal joints or oblique joints can form due to various geological processes such as stress and deformation. They often cut across the rock layers in a diagonal or oblique direction, creating fractures or cracks in the rock. Inclined joints, on the other hand, refer to fractures or faults that are inclined at an angle relative to the horizontal plane. Strike joints and dip joints are terms used to describe joints that are parallel to the strike or dip of the rock layers, respectively. These joints are referred to as oblique joints because they are not parallel to the strike or dip of the rock layers.
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Hot-spots can a.Rise up from the ocean floor b.Be found on continents c.Be found in the interior of tectonic plates d. All of the above
Hot-spots can (d) be found in all of the above locations. Hot-spots are areas of intense volcanic activity that are not directly associated with plate boundaries. They can occur in various geological settings, including:
a) Rising up from the ocean floor: Hot-spots can create volcanic islands or seamount chains as magma rises through the oceanic crust. Examples include the Hawaiian Islands and the Galapagos Islands.
b) Found on continents: Hot-spots can also be present on continental landmasses, leading to volcanic activity and the formation of volcanic features such as lava fields and volcanic mountains. The Yellowstone Caldera in the United States is an example of a hot-spot on a continent.
c) Found in the interior of tectonic plates: Some hot-spots occur deep within tectonic plates, far away from plate boundaries. These are known as intra-plate hot-spots. Examples include the Deccan Traps in India and the Columbia River Basalts in the northwestern United States.
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* seafloor spreading causes rock that is closer to oceanic ridges to be younger in age than rock that is farther away * subducting plates cause old crust to melt as it rejoins the mantle * colliding continental crust is thrust upwards to build mountains what can best be concluded from this information?
Based on the information provided, it can be concluded that the Earth's crust is constantly in motion, with seafloor spreading and subducting plates contributing to the creation and destruction of the planet's crust.
The process of seafloor spreading causes the rock closer to oceanic ridges to be younger in age, indicating that the crust is being created at these locations. On the other hand, subducting plates cause old crust to melt as it rejoins the mantle, indicating that the crust is being destroyed at these locations. When continental crust collides, it is thrust upwards to form mountains, which highlights the process of crustal deformation. Overall, the conclusion is that the Earth's crust is constantly being created, destroyed, and deformed through these processes, which ultimately shape the planet's geology.
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Predict the impact to methane level if swamps and wetlands are increasing in a specific geographic region.
A. Methane levels would increase.
B. Methane levels would decrease.
C. Methane levels would not change.
D. Methane levels would fluctuate.
If swamps and wetlands are increasing in a specific geographic region, it is likely that methane levels would increase. Swamps and wetlands are known to be sources of methane emissions due to the decomposition of organic matter in waterlogged conditions. The bacteria that thrive in such environments produce methane as a byproduct of their metabolism. Therefore, as the size of the swamps and wetlands increases, so does the amount of organic matter available for decomposition and subsequently, the amount of methane produced.
If swamps and wetlands are increasing in a specific geographic region, it is likely that methane levels would increase. Swamps and wetlands are known to be sources of methane emissions due to the decomposition of organic matter in waterlogged conditions. The bacteria that thrive in such environments produce methane as a byproduct of their metabolism. Therefore, as the size of the swamps and wetlands increases, so does the amount of organic matter available for decomposition and subsequently, the amount of methane produced. It is important to note that other factors such as temperature and precipitation can also influence methane levels, but overall, the expansion of swamps and wetlands is likely to have a significant impact on methane levels in the region. Therefore, option A, methane levels would increase, is the most likely answer.
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The soil horizon comprising consolidated and unweathered parent material is ____. a) R horizon b) A horizon c) B horizon d) D horizon e) C horizon
The soil horizon comprising consolidated and unweathered parent material is called the C horizon. This horizon is located below the A and B horizons and can be distinguished by its lack of organic matter and soil structure. The C horizon is composed of the parent material that has not yet undergone significant weathering or erosion. The parent material can vary depending on the location and can include materials such as rock, gravel, and sand. Over time, weathering and erosion will break down the parent material and create the A and B horizons.
The soil horizon comprising consolidated and unweathered parent material is called the C horizon. This horizon is located below the A and B horizons and can be distinguished by its lack of organic matter and soil structure. The C horizon is composed of the parent material that has not yet undergone significant weathering or erosion. The parent material can vary depending on the location and can include materials such as rock, gravel, and sand. Over time, weathering and erosion will break down the parent material and create the A and B horizons. The C horizon is an important layer to study as it can provide insight into the history and geology of the area. In summary, the C horizon is the soil horizon that contains the consolidated and unweathered parent material, located beneath the A and B horizons.
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What natural factor removes suspended particulate matter from the troposphere?
A. The carbon cycle
B. evaporation
C. Temperature inversions
D. gravity
E. Filtration
The natural factor that removes suspended particulate matter from the troposphere is D)gravity.
This is because suspended particulate matter such as dust, pollen, and other pollutants are heavier than air and are eventually pulled down to the ground due to gravity. However, the efficiency of this process depends on various factors such as the size and weight of the particles, wind patterns, and atmospheric conditions. In addition to gravity, other natural factors such as precipitation and wind can also help to remove particulate matter from the troposphere. It is important to note that human activities such as industrial processes and transportation can increase the amount of particulate matter in the atmosphere, which can have negative impacts on human health and the environment.
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On average how much Food consumption and waste is being wasted
in Canada and what you are trying to reduce?
Compare Canada to other nations (e.g. is this an issue everywhere
or only in developed/devel
On average, Canada wastes approximately 11 million metric tons of food annually, with an estimated value of $49.5 billion.
The goal is to reduce food waste and promote sustainable practices throughout the food supply chain. Efforts are being made to minimize waste at various stages, including production, distribution, retail, and consumer levels. This involves implementing strategies such as improved inventory management, donation programs, consumer education, and composting initiatives.
Food waste is a global issue, affecting both developed and developing nations. However, the scale and underlying causes may vary. Developed countries often face higher levels of food waste due to factors like consumer behavior, inefficient supply chains, and strict cosmetic standards. Developing nations may experience more food loss due to challenges in infrastructure, storage, and agricultural practices. Nonetheless, food waste reduction is a priority worldwide, as it addresses food security, economic sustainability, and environmental concerns.
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