Answer:
Object A, by 0.5 cubic centimeter
Explanation:
Density (d) is given by :
[tex]d=\dfrac{m}{V}[/tex]
m is the mass of an object
V is its volume
For object A:
[tex]V_1=\dfrac{m_1}{d_1}[/tex]
[tex]V_1=\dfrac{9\ g}{10\ g/cm^3}=0.9\ cm^3[/tex]...........(1)
For object B:
[tex]V_2=\dfrac{m_2}{d_2}[/tex]
[tex]V_2=\dfrac{4\ g}{10\ g/cm^3}=0.4\ cm^3[/tex]...........(2)
From equation (1) and (2) it is clear that volume of object A is greater by 0.5 cm³. So, the correct option is (b) "Object A, by 0.5 cubic centimeter".
what is true in a saturated solution A. No more solute can be dissolved B. No more solvent can be dissolved C. No more solution can be made D. The concentration cannot be decrease
Carolina Bays along with cypress and gum ponds are important inland wetlands that provide habitat for a wide range of plants and animals. Carolina Bays tend to have some peat development, which is a layer of partially decomposed plant matter. Several Georgia Bays have peat deposits over 14 feet deep, the end product of about 9,000 years of plant decomposition and periodically, these peat deposits catch fire and burn usually about every 25 years. This fire plays an important role in the maintenance of Carolina Bays. How? A) The fires keep the Carolina Bay habitat from becoming overgrown with vegetation.
B) The fires in the Carolina Bays help to dissipate dangerous chemicals dissolved in the groundwater.
C) The fires in the Carolina Bay areas drive out invasive animal species that out-compete native species.
D) The fires throughout the Carolina Bays help to keep the plant species consistent throughout the states.
What are tectonic plates and how do they work?
Plate tectonics is the study of movement of the Earth's plates, called tectonic plates. A tectonic plate is a huge, irregularly shaped slab of solid rock. They are commonly composed of continental and oceanic lithosphere. Weather, as well as others, cause tectonic plates to slide, this causes a slight shake, volcanoes or earthquakes.
Photosynthesis requries a supply of CO2 as well as H2O and sunlight. how do plants obtain these resources?
H2O is acquired by osmosis in the plants cells, and or through the stomata. CO2 is obtained in the way of the stomata.
What do you mean by osmosis?In biology, osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.
Moreover, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes).
Hence, osmosis is the transport of a solvent through a semipermeable membrane that separates two solutions of differing solute concentration. During osmosis, the solvent moves from the solution that is lower in solute concentration to the solution that is higher in solute concentration.
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Describe a method you would use to separate chicken soup into other forms of matter from which it’s made
Consider the following food chain: garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat. What happens to the other members of the food chain if the cat is removed?
If the cat is removed the population of birds will escalate and exceed the population of the snails that sustain them.
The food chain is a depiction of the feeding relationship that exists in an ecosystem. An ecosystem is a self-supporting unit in which materials and energy are exchanged.
The food chain is as follows;
garden plants --> snails ---> birds --->household cat. We can see that removal of the cat means that the population of birds will escalate beyond the available population of snails. This will lead to competition for food among the birds within the ecosystem. The population of snails will suddenly decrease due to increase in the number of their predators. The number of garden plants will also increase due to the decrease in snail population.
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What is responsible for telling cells how to behave
Answer: Its DNA.
Explanation:
The genetic material of which all living beings are created recieves the name of DNA (deoxyribonucleic acid). It is present in living organism cells and it is the one that provides the instructions of what to do to the cell, it gives orders as of when a cell needs to grow, to do an specific function and how that cell would respond to its environment.
distinguish between the cell wall and the cell membrane in a plant cell
Which statement is true about oxygen and rocks?
Answer:
D. Oxygen is a pure substance and rocks are mixtures
Explanation:
I took the exam and got this right
DNA is not found in the nucleus of all eukaryotic cells. True false
The assertion that DNA is not found in the nucleus of all eukaryotic cells is incorrect. In fact, the nucleus of eukaryotic cells does contain DNA, which is essential for the cell's functioning and reproduction.
Explanation:The statement 'DNA is not found in the nucleus of all eukaryotic cells' is false. DNA, which stands for deoxyribonucleic acid, is indeed found in the nucleus of all eukaryotic cells. Eukaryotic cells, as opposed to prokaryotic cells, have a nucleus that contains their DNA. This DNA is responsible for the cell's genetic information and instructions for cell functioning and reproduction. This is a basic and universal characteristic of eukaryotic cells.
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Angle where a leaf stall joins the stem
URGENT PLEASE ANSWER
Why is it important that a pure water IV not be given to dehydrated patients?
If a mineral leaves a red trail when scraped against an unglazed porcelain plate,which property of mineral is being measured?
The answer is color because it leaves a red trail
Compare the functions of channel proteins and carrier proteins and facilitated diffusion
Taconite is a low-grade iron ore that is found around Lake Superior. The iron-bearing rock is found interlaced with quartz, chert and other minerals. The iron is separated out of the taconite using magnets so that it can be processed to for use in the production of steel in nearby states. What statement does not represent a concern by the Department of Natural Resources about the use of taconite as a source of iron.
A) The process to separate iron from taconite requires transportation by large vehicles over public roads.
B) The separation of taconite involves chemicals that may lead to air and water and pollution.
C) The area where taconite is mined is characterized by wetlands and streams.
D) Taconite is a non-renewable resource.
Answer:
Option (D)
Explanation:
Taconite is a silica-rich and low-grade ore of iron. This iron ore was initially considered to be a waste rock due to the abundance of higher-grade natural iron ore. But now, with the decreasing amount of natural iron ore, the use of taconite is increasing. They are extremely hard rock and the iron ore present in this rock is extracted by the use of magnetism. Due to the heavier weight, these rocks are needed to be transported from one place to another using very heavy vehicles.
These rocks are obtained by the smelting process in which carbon is used to heat the iron ore. This emission of carbon into the atmosphere can contribute to pollution.
These rocks are usually found in the streams and wetland areas. They are abundantly present on earth and not a non-renewable resource.
Hence, the most appropriate answer is option (D).
what observable characteristic could be used to identify this rock sample as gneiss
Gneiss can be identified by its foliated texture with alternating bands of light and dark minerals, and sometimes eye-shaped quartz masses known as augen; it is a high-grade metamorphic rock formed from schists or granites.
Explanation:The observable characteristic that could be used to identify a rock sample as gneiss is its distinct foliated texture. Gneiss is a high-grade metamorphic rock characterized by alternating bands of light and dark-colored minerals, typically quartz and biotite mica. The surface of gneiss may also feature augen, which are eye-shaped masses of quartz that give rise to the term augen gneiss. This rock typically forms from the metamorphism of schists or granites and is a product of high-grade metamorphism, where minerals have segregated into distinct layers due to intense heat and pressure.
Final answer:
The observable characteristic that can be used to identify the rock sample as gneiss is the presence of alternating bands of light- and dark-colored minerals.
Explanation:
The observable characteristic that can be used to identify the rock sample as gneiss is the presence of alternating bands of light- and dark-colored minerals. Gneiss is a high-grade, foliated metamorphic rock, and these alternating bands are a result of the intense metamorphism that has caused minerals to self-segregate into discrete zones. In the case of gneiss, the bands are often composed of minerals such as quartz and biotite mica.
Which monomer makes up a polypeptide?
fatty acid
phospholipid
polyunsaturated fat
amino acid
amino acid is the answer
What would happen to the digestive system if the muscular system stopped working?
Describe the different types of symmetry you can find in animals
List two other facts you can learn from this graph.
Answer these questions
1. What are three examples of technology?
2. What is observation? Why is it important to scientists?
3. What role does critical thinking play in evaluating scientific evidence?
4. How is a scientific law different from a scientific theory?
5. How do you make an inference?
6. Contrast a hypothesis & a prediction.
7. Why are ethics particularly important in specific types of scientific investigation?
8. Define biology. Name 2 other branches of science.
Answer in complete sentences
Can someone please help me quick!!!
A student compared some soccer players to the atoms in the liquid state. Which of the following activities were the soccer players most likely performing?
A-Lining up next to each other
B-Huddling around each other for the ball
C-Running randomly in all directions
D-Slowly jumping up and down in their places
Two states of matter are described below.
State A: Cannot be compressed and retains its shape
State B: Highly compressible
Which combination of the state and a substance in that state is correct?
A- State A = air; State B = neon
B-State A = water; State B = number cube
C-State A = water; State B = oxygen
D-State A = piece of metal; State B = air
If a chemical change has taken place, which of these is most likely true?
A-Original substance can be easily recovered.
B-Composition of a substance is the same.
C-A completely new substance is formed.
D-An easily reversible process has taken place.
Over a period of time a student observed a small tadpole changing into a frog. Which of the following explains the physical change that takes place in this growing frog?
A-The frog can change back into a tadpole.
B-The tadpole changes its shape and form.
C-The frog is made up of a different set of elements than the tadpole.
D-Many reactions take place inside the tadpole as it changes into a frog.
Which of these is an example of recombination of atoms to form newer molecules?
A-Molding a wire of gold
B-Hammering a piece of iron
C-Tarnishing of a silver coin
D-Rolling of a sheet of aluminum
Which process changes substances into new substances with new properties?
A-Chemical Change
B-Compressibility
C-Malleability
D-Physical Change
Judy kept 250 grams of juice in the freezer. What is most likely the mass of the frozen juice formed and why?
A-250 g, mass remains same during physical change of freezing
B-500 g, mass of ice is twice the mass of juice
C-250 g, mass is conserved when matter is destroyed to form ice
D-200 g, mass of frozen liquid is less than mass of the original liquid
Anna heated 15 g of Substance A to obtain 5 g of Substance B, 4 g of Substance C, and a certain amount of Substance D. Which statement is correct?
A-The mass of Substance D was 10 g less than the mass of Substance A.
B-The mass of Substance D was 1 g greater than the mass of Substance B.
C-The mass of Substance A was equal to the total mass of Substance C and Substance D.
D-The mass of Substance A was equal to the total mass of Substance B and Substance D.
The soccer players are most likely huddling around each other for the ball. Water is in State A and air is in State B. In a chemical change, a completely new substance is formed. The tadpole changes its shape and form as it becomes a frog. Molding a wire of gold is an example of recombination of atoms to form newer molecules. A chemical change changes substances into new substances with new properties. The mass of the frozen juice formed is most likely 250 g. The mass of Substance D is 6 g, which is 10 g less than the mass of Substance A.
Explanation:The soccer players are most likely huddling around each other for the ball, which is similar to how atoms in the liquid state move and interact with each other. In the liquid state, the atoms are free to move around and can cluster together in groups.
The correct combination of states and substances is State A = water and State B = air. Water cannot be compressed and retains its shape, while air is highly compressible.
When a chemical change takes place, a completely new substance is formed. Option C is most likely true. In a chemical change, the composition of the substance changes, resulting in the formation of new substances with different properties.
The physical change that takes place in a growing frog is that the tadpole changes its shape and form. Option B is correct. The physical change involves the development and transformation of the tadpole's body into that of a frog.
An example of recombination of atoms to form newer molecules is molding a wire of gold. The gold atoms are rearranged to form a new shape or structure. Option A is the correct answer.
The process that changes substances into new substances with new properties is a chemical change. Option A is the correct choice.
In this case, the mass of the frozen juice formed is most likely 250 g, as mass remains the same during the physical change of freezing. Option A is the correct answer.
In this scenario, the mass of Substance D is 6 g, which is 10 g less than the mass of Substance A. Option A is the correct statement.
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What might happen in a community if farmers did not plant legume crops
an area of forest that experiences very little change in species composition is a?
Water seeps inside cracks in a boulder and freezes. Over time, the crack expands and the boulder cracks in half. What process caused this change in the rock?
What land form is created when glaciers erode backwards into the mountainside and form a shape like a shallow bowl?
It's called a Cirque, or Corrie
Hope that's right and helps
Answer: Cirque
Explanation: Cirques are bowl shaped, circular depression that are formed at the top region of the mountains, due to the melting and erosion of glaciers. It is an erosional feature.
Cirques are separated from one another by aretes, that are steep narrow long ridges found at the top part of the mountain. The walls of this cirques are very steep and their diameter ranges upto a size of 1 kilometer.
how do scientist organize data?
What is the difference between structural and functional proteins? And please give a definition for both!
What are the evolutionary advantages of organisms that can photosynthesize?
In one to three sentences, describe what happens during the reduction stage of the Calvin cycle.
ATP and NADPH transfer chemical energy to 3-PGA.
Glyceraldehyde 3-phosphate (G3P) is created.
G3P is used to make sugar.
The reduction stage is the second stage of the Calvin cycle in which the molecules of 3-phosphoglyceraldehyde are produced through the process of carbon fixation. These molecules are then converted into the simple sugar molecules known as glucose.
What is the Calvin cycle?The Calvin cycle may be defined as a type of dark reaction of photosynthesis that is light-independent. It occurs in the chloroplast of the plant and converts carbon dioxide into glucose.
The reduction stage of the Calvin cycle initiates with the transfer of chemical energy from the ATP and NADPH to 3-phosphoglyceraldehyde.
Therefore, it is well described above.
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