Answers
Given parameters:
Mass of rock Tobias found = 475kg
Volume of initial water = 2000mL
New volume = 2025mL
Unknown:
Density = ?
Solution:
Density is the mass per unit volume of a substance.
Mathematically;
Density = \(\frac{mass}{volume}\)
Volume of rock = New volume - Initial volume = 2025 - 2000 = 25mL
Now let us convert the mass to g;
1000g = 1kg
So; 475kg will be 475000g
So;
Density of stone = \(\frac{475000}{25}\) = 19000g/mL or 19000g/cm³
Related Questions
A meteorologist for a radio station announces that the humidity is high and the air pressure is low. Which additional data would also describe the
current local weather?
Answers
Part A
Explain how rheumatoid arthritis causes the symptoms shown in the models. Would the same symptoms occur if the
immune system were functioning properly?
Model 1
normal
hand
bone
erosion
bone
displacement
hand affected
by rheumatoid
arthritis
healthy joint
Model 2
cartilage
meniscus
bone erosion
swollen
inflamed
synovial-
membrane
cartilage
wears away
reduced
joint space
rheumatoid arthritis
Answers
Model 1 shows a hand affected by rheumatoid arthritis, the bone erosion and displacement occur as a result of the chronic inflammation in the joints.
Model 2 illustrates the effects of rheumatoid arthritis on a joint, the key features are bone erosion, swollen and inflamed synovial membrane, and cartilage damage.
How do we explain?Rheumatoid arthritis is described as an autoimmune disease characterized by chronic inflammation of the joints.
In Model 1, the immune system attacks the synovial membrane, leading to the release of inflammatory substances such as cytokines.
We knot that these substances cause the synovial membrane to become thickened and swollen. Over time, the chronic inflammation damages the cartilage and underlying bone, resulting in erosion and deformity of the affected joint. As a result, the normal structure and function of the joint are compromised, leading to pain, stiffness, and reduced mobility.
In Model 2, the chronic inflammation triggered by the immune response leads to an influx of immune cells, primarily lymphocytes and macrophages, into the synovial membrane.
These immune cells release inflammatory mediators, causing the synovial membrane to become thickened, swollen, and inflamed. The persistent inflammation in the joint leads to the destruction of cartilage, which is the protective cushioning between bones.
In conclusion, in the absence of autoimmune dysfunction, the immune system would not cause the same level of inflammation and tissue damage seen in rheumatoid arthritis.
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A population of animals is split in half by a river. Before speciation is
completed, the two halves are rejoined when a drought causes the river to run
dry. How would this impact the two populations?
OA. Speciation would still occur, because the two halves would be too
different genetically to interbreed.
OB. The likelihood of speciation would decrease as genes were shared
between the two groups.
C. Traits that had developed through mutation would still exist only in
one of the halves.
D. The two halves would be reproductively isolated.
SURMIT
Answers
D is the correct selection. Reproductive isolation would exist between the two parts. A river can divide an animal population in half, isolating the two sections from one another.
As a result, the two populations will be subjected to diverse environmental factors and diverse selection pressures. As a result of these variations, the two populations will eventually develop genetic variances from one another, resulting in speciation.
The two populations won't be able to mix if the two parts are reunited after a drought forces the river to dry up. This is because effective interbreeding between the two groups will be impossible due of their genetic divergence. As a result, the two halves would not be able to reproduce with one another.
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Stage each label to the correct location on the image. Classify the sources of energy as renewable or non renewable.
Answers
Renewable energy: Biofuel, tides, waves, geothermal
Non-renewable energy: Hydrocarbons, gas hydrates
What happens to proteins in the small intestine?
A. They require essential amino acids in
order to function.
B. They no longer function because
they are insoluble.
C. They are broken down and absorbed
into the blood.
Answers
Answer:
broken down and absorb into the blood
Scarification is a process that scratches up the surfaces of seeds that pass through the guts of birds. A student wanted to see if scarified seeds grew better than those that were not scarified. He simulated scarification by rubbing 20 cherry seeds with sandpaper. Another set of 20 cherry seeds were left alone. The student planted each of the seeds into separate pots and gave them the same amount of water daily. The pots were placed in a location with a constant temperature of approximately 25 degrees C. The number of seeds that germinated each group was recorded daily for three weeks. Which is the control group?
Which is the experimental group?
What is the independent variable?
What is the dependent variable?
Name at least one controlled variable?
Was quantitative or qualitative data collected?
Answers
The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.
Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.
Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.
The study does not have qualitative data.
Differences between dependent and independent variablesThe independent variable needs no stimulus to generate results.The dependent variable needs to be stimulated by the independent variable to generate results.A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.
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as a child, alex was short for his age. but during his teenage years, his height increased and he surpassed most of his friends. What must have occurred to create his growth spurt?
Answers
During Alex's teenage years, his growth spurt was likely triggered by the onset of puberty. This is a natural process in which significant physical and hormonal changes occur, leading to rapid growth and development in adolescents.
Puberty is a stage of development characterized by various hormonal changes that impact physical growth and maturation. During puberty, the body undergoes significant transformations, including the growth of skeletal bones, muscle development, and changes in body composition.
These changes are primarily influenced by the release of hormones such as growth hormone and sex hormones (such as testosterone in males and estrogen in females).
In Alex's case, it is likely that his initial delay in growth during childhood was due to a slower or delayed onset of puberty compared to his peers. However, once he entered his teenage years and experienced the hormonal changes associated with puberty, his growth spurt occurred, allowing him to catch up and even surpass his friends in height.
It's important to note that the timing and extent of growth spurt can vary among individuals, influenced by genetic factors, overall health, and nutrition.
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What can insects do that no other arthropods can do
Answers
Answer:
thorax and abdomen, three pairs of legs, antennae
Explanation:
how does a liver cell respond to insulin
Answers
Answer:
Insulin stimulates the liver to store glucose in the form of glycogen. A large fraction of glucose absorbed from the small intestine is immediately taken up by hepatocytes, which convert it into the storage polymer glycogen. Insulin has several effects in liver which stimulate glycogen synthesis.
Explanation:
Insulin stimulates the liver to store glucose in the form of glycogen. A large fraction of glucose absorbed from the small intestine is immediately taken up by hepatocytes, which convert it into the storage polymer glycogen. Insulin has several effects in liver which stimulate glycogen synthesis.
explain the resistence ......?? follow me gyus
Answers
Explanation:
is there multiple choice?
How do graded potentials lead to the generation of an action potential in a single
neuron?
Answers
When a graded potential causes hyperpolarization in a neuron, an action potential is not occur, where as If a graded potential causes depolarization, an action potential is more likely to occur.
What are the types of neuron ?The neurons are the basic nerve cell of the nervous system where the presynaptic neuron emits the nerve impulse and the postsynaptic neuron receives this impulse.
The function of neurons can be Sensory which handle information from the sensory organs like skin, eyes, ears, nose and Motor which emit signals from the brain and spinal cord to the muscles.
Other neuron are Interneurons form a bridge connection between two neurons depending on how distant the neurons are from each other.
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what are the right ascension and delineation of the vernal and autumnal equinoxes
Answers
Answer:
Autumnal equinox right ascension = 12 hours; declination = 0°; Sun rises at 90° azimuth and sets at 270° azimuth. December solstice right ascension = 18 hours; declination = -23.5° Sun rises at greater than 90° azimuth and sets at less than 270° azimuth.
Explanation:
How is transcription similar to replication and how is it different?
Answers
Answer:
Transcription and replication are important processes that occur in cells but have distinct differences.
Similarities between transcription and replication:
1. Both transcription and replication involve the synthesis of nucleic acids. In replication, DNA is copied to produce an identical DNA molecule, while in transcription, DNA is used as a template to produce RNA.
2. Both processes occur in the nucleus of eukaryotic cells, although replication also occurs in the cytoplasm of prokaryotic cells.
Differences between transcription and replication:
1. Template: In replication, the entire DNA molecule serves as the template for copying. However, in transcription, only a specific DNA segment, called a gene, serves as the template for synthesizing an RNA molecule.
2. Product: Replication results in the production of an identical DNA molecule, while transcription produces an RNA molecule that is complementary to the DNA template.
3. Enzymes involved: Replication requires the involvement of multiple enzymes, including DNA polymerase, helicase, and ligase. Transcription, on the other hand, involves RNA polymerase, which catalyzes the synthesis of RNA from the DNA template.
4. Base pairing: During replication, DNA bases pair with their complementary bases (A with T and C with G) to produce an exact copy. In transcription, RNA bases pair with complementary DNA bases (A with U and C with G), resulting in an RNA molecule complementary to the template DNA strand.
Overall, while transcription and replication involve the synthesis of nucleic acids, they differ in terms of their templates, products, enzymes involved, and base pairing patterns. These processes are essential for cell function and crucial in genetic information transfer and maintenance.
Explanation:
Tufa is a/an ____ sedimentary rock.
A) organic
B) Clastic
C) Chemical
Answers
Answer:
chemical
Explanation:
green is dominant over yellow in pea plants. if two yellow plants were crossed, their offspring will be: group of answer choices
Answers
Half of the offspring from a heterozygous yellow-seeded and green-seeded plant hybrid will be yellow and half will be green. As a result, choice A is the right response.
No, the heterozygous pea plant in question will only produce yellow seeds, to give you the quick answer. But, the children that could be produced by selfing this plant may have green or yellow seeds; however, they will never have a mixture of seed colours. Let's investigate why this is so. The Mendel gene that affects pea colour determines whether the pea's chlorophyll will be degraded and broken down. When this gene is inactive, chlorophyll persists and the pea remains green. Therefore, a damaged gene is to blame for the recessive feature in this instance.
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Question 4 of 10
Which statement best describes a scientific theory?
O A. It is true and can never be changed.
O B. It is supported by many different experiments.
O C. It is considered false until proven true.
O D. It is an educated guess that requires no testing.
Answers
Answer:
B. it is supported by many different experiments.
Explanation:
describe how impulse are transmitted across a synapse
Answers
A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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Identify the light source of the compound light microscope.
A
B
C
F
Answers
Answer:
F
Explanation:
The light source on microscopes comes from below, at the base.
characteristics of contaminated water
Answers
Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.
Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.
Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.
Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.
Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.
Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.
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please please help me :( with just this one question PLEASE
Answers
Answer:
Square 1: AA
Square 2: Aa
Square 3: aa
Explanation:
The letters on the on outsides intersect in a way making diffent alleles
A layer of cells called the endodermis surrounds the stele. Xylem is found towards the center of the stele and phloem towards the outside of the stele. 18) How does this compare to their arrangement in the stem? 19) The meristematic region is protected in the root by the presence of a root cap. How is the meristematic region protected in the stem tip? 20) In which of these regions would you expect to find the specialized cells of vascular tissue? 21) In which of these regions are the cells genetically identical? 22) Why?
Answers
Answer:
Epidermis layer is responsible for the protection of meristematic region.
Explanation:
Meristematic region is protected in the stem tip by epidermis which consist of dead layer of cells. Epidermis is the outer layer of stems, leaves, flowers and fruits which is responsible for the protection of inner part from damage. Vascular bundle such as phloem present near the boundary of the stem while the xylem is present in the inside of the stem. In the inside layer of the stem, all the xylem cells are genetically identical while the layer that is present at the edge of the stem is phloem in which all the cells are genetically identical to each other.
All About Protists
1. Plantlike protists are known as
2. Animal-like protists are known as
Answers
Answer:
1. Plantlike protists are known as algae
2. Animal-like protists are known as protozoa
What are the impacts of catastrophic events?
Define global warming? What are the greenhouse gases?
What are the problems associated
arming in artic? Coastal area?
What are some ways that human lifestyles affect the environment?
Describe some sustainable farming techniques.
Describe some environmental parameters that should be examined before building on land?
Answers
Answer:
espero que te sirva
Explanation:
El calentamiento global y el cambio climático tienen coincidencia en la principal
de sus causas, la emisión masiva de los diferentes gases de efecto invernadero o
GEI que retienen el calor dentro de la atmósfera y sobre la superficie terrestre a
través del denominado efecto invernadero.
El efecto invernadero es un proceso natural por el cual se produce la retención
del calor procedente del Sol en la atmósfera terrestre gracias a la capa de GEI que
se encuentra en ella. Estos gases en cantidades normales mantienen la
temperatura del planeta aproximadamente a 33ºC por encima de la que podría
tener si estos no existieran, por lo que el planeta sería demasiado frío para que se
desarrollase vida en él. Sin embargo, actualmente el efecto invernadero se está
volviendo tan intenso a causa de nuestras emisiones que comienza a tener graves
repercusiones en el medio.
El Grupo Intergubernamental de Expertos sobre el Cambio Climático (IPCC)
concluyó en el Quinto Informe de Evaluación (AR5) de 2013 que la influencia
humana había sido la causa dominante de este calentamiento producido desde la
mitad del siglo XX a través de la emisión de GEI, lo cual es una evidencia cada vez
mayor. Entre los principales gases emitidos se encuentran el vapor de agua, el
dióxido de carbono, el metano y el ozono.
Hi would like some help asap
Answers
Answer:
Out of all the structures in the picture, the mRNA is structure II.
Explanation:
Polypeptide TranslationTranslation is the process of decoding messenger RNA (mRNA) and utilizing its information to construct a polypeptide, or amino acid chain. A polypeptide or protein is comprised of many amino acids.Answer Breakdown Structure II is the mRNA. The mRNA is used as the framework for the translation process which is located in the small ribosomal subunit. Every three bases on the mRNA are a codon and match up with the three base anticodons on the tRNA.Structure I is the anticodon. The anticodons are specific and encode for each amino acid. The tRNAs are then able to pick up the amino acid because of the corresponding anticodon. Structure IV is the tRNA. The tRNA is responsible for the transfer of the amino acid to the mRNA in the ribosome. Once the tRNA makes the attachment of the anticodon to the codon, a new tRNA enters. Structure V is an amino acid. When the new tRNA enters, the previous tRNA exits and discharges its amino acid. Structure III is a polypeptide chain or protein. A polypeptide chain is a group of several amino acids. This occurs when the amino acids accumulate via polypeptide elongation. In each ribosome is an EPA site:The tRNA attaches to the codon on the mRNA via its anticodon at the A site.The tRNA adds the amino acid to the existing chain or initiates the chain at the P site. The tRNA exits the ribosome at the E site. A new tRNA then comes in and the process is repeated.Please let me know if this helped!!!
All organic compounds contain the element a. Carbon b. Hydrogen c. Nitrogen
Answers
Answer:
yes
Explanation:
becawse organic cpd are a compound that formed from living things
Which of the following is not true of sexual reproduction?
A. Sexual reproduction involves gametes
B. Sexual reproduction involves the simple division of a cell
C. Through sexual reproduction, traits and characteristics of the species are passed on to offspring
D. Most multicellular organisms reproduce through sexual reproduction
Answers
Answer:d
Explanation:
2. Relative dating methods help scientists to
determine the age of the fossils within each layer
identify what rock types are present
identify the order in which rock units formed
assign a numerical date to each rock layer studied
Answers
Answer:
The correct answer is "identify the order in which rock units formed".
Explanation:
Relative dating methods are experimental approaches that allow to identify the relative order of past events. Instead of determining the absolute age of samples such as rocks or fossils, relative dating methods correlate which samples are older. Therefore, relative dating methods help scientists to identify the order in which rock units formed.
How many factors should a well-designed experiment test at one time?
1
2
3
depends on the number of experiment variables
Answers
Answer:
And the variables (independent and dependent variables)Experimental groupControl groupD
4) This diagram shows a food chain from a desert ecosystem in Arizona. The arrows show
how the matter eaten by organisms moves through the food chain.
western
diamondback
rattlesnake
Select each organism below that is a primary consumer in this food chain.
brittlebush
pallid-winged
grasshopper
ubmit
brittlebush
grasshopper mouse
red-tailed hawk
grasshopper
mouse
pallid-winged
grasshopper
red-talled
hawk
western diamondback
rattlesnake
Question
answere
28
Time
elapsed
PAUSE
Challeng
Stage 3 of
Get 5 corred
in a row
Answers
The primary consumers in the food chain are the organisms that eat the producers, which in this case are the brittlebushes. The primary consumers are the pallid-winged grasshoppers.
The other organisms in the food chain are secondary consumers (grasshopper mouse), tertiary consumers (red-tailed hawk), and apex predators (western diamondback rattlesnake).
Here is a diagram of the food chain with the primary consumers highlighted in green:
brittlebush (producer)
----------------------->
pallid-winged grasshopper (primary consumer)
----------------------->
grasshopper mouse (secondary consumer)
----------------------->
red-tailed hawk (tertiary consumer)
----------------------->
western diamondback rattlesnake (apex predator)
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Compare and contrast the end products of protein and carbohydrate digestion between the pigand the cow.
Answers
