Answer:
[tex]0.05\times 10^{-3}\ \text{m}^3[/tex]
[tex]800\ \text{kg/m}^3[/tex]
Explanation:
[tex]W_b[/tex] = Weight of bottle = 0.25 N
[tex]W_w[/tex] = Weight of water = [tex]0.75-0.25=0.5\ \text{N}[/tex]
g = Acceleration due to gravity = [tex]10\ \text{m/s}^2[/tex]
[tex]\rho_w[/tex] = Density of water = [tex]1000\ \text{kg/m}^3[/tex]
Mass of water
[tex]m_w=\dfrac{W_w}{g}\\\Rightarrow m_w=\dfrac{0.5}{10}\\\Rightarrow m_w=0.05\ \text{kg}[/tex]
Volume is given by
[tex]V_w=\dfrac{m_w}{\rho_w}\\\Rightarrow V_w=\dfrac{0.05}{1000}\\\Rightarrow V_w=0.05\times 10^{-3}\ \text{m}^3[/tex]
Volume of the bottle is [tex]0.05\times 10^{-3}\ \text{m}^3[/tex].
This means that the alcohol will take the same amount of volume.
[tex]W_a[/tex] = Weight of alcohol = [tex]0.65-0.25=0.4\ \text{N}[/tex]
Mass of alcohol
[tex]m_a=\dfrac{0.4}{10}\\\Rightarrow m_a=0.04\ \text{kg}[/tex]
Density is given by
[tex]\rho=\dfrac{m_a}{V_w}\\\Rightarrow \rho=\dfrac{0.04}{0.05\times 10^{-3}}\\\Rightarrow \rho=800\ \text{kg/m}^3[/tex]
Density of alcohol is [tex]800\ \text{kg/m}^3[/tex]
The volume of the bottle is 50 mL and the density of alcohol is 0.8 g/c[tex]m^{3}[/tex]
The weight of empty bottle is 0.25N
the weight of bottle filled with water is 0.75N
therefore, the weight of water in the bottle is 0.75N - 0.25N = 0.50N
we know that weight, w =mg , where m is the mass of substance and g is acceleration due to gravity. Here we will take g= 10 m/[tex]s^{2}[/tex] for simplicity.
⇒ m = w/g = 0.5/10 = 0.05 kg
⇒ mass of water is 50g
now, the density of water ρ(w) = 1g/[tex]cm^{3}[/tex] = 1g/mL
relation between mass, density and volume is:
V = m/ρ = 50/1 = 50mL
Hence the volume of the bottle is 50mL.
Now it is given that the weight of bottle filled with alcohol is 0.65N
⇒ weight of alcohol = 0.40N
⇒ mass of alcohol = 0.40/g = 0.40/10 = 0.040kg = 40g
The volume of the bottle remains the same, so to calculate the density of alcohol we use the above mentioned relation between mass, density, and volume on alcohol.
That is, V = m/ρ
⇒ ρ(al) = m/V = 40/50 g/c[tex]m^{3}[/tex]
ρ(al) = 0.8 g/c[tex]m^{3}[/tex] or 0.8 g/mL
Learn more about density and volume:
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Which type of force occurs between two objects at a distance? Applied force Contact force Non-contact force Normal force
Answer:
Non contact force
Explanation:
I took test :)
WILL GIVE BRAINLY!!!
If a one strand of a DNA molecule reads ATCCGACCAGCTA, what will its complementary DNA strand look like?
A. TAGGCTGGTCGAT
B. UAGGCUGGUCGAU
C. ATCCGACCAGCTA
D. GCTTAATTGGCTG
Answer: A
Explanation:
A goes with T and G goes with C
Remember with this song:
Apples go in trees, Cars in the garage
Whodunnit?
Six contestants on a reality TV show were stunned to find their lowest scoring colleague was "injured." They
must figure out the crime before the bell rings. The question is Whodunnit? And how... The Player, Last
Known Whereabouts and Method that are left unaccounted for -- is the solution.
Answer: No, it's not a scam file. Got it in my science class
Explanation:
Why might you always need to have some glucose in the blood?
Answer:
Blood glucose is a sugar that the bloodstream carries to all cells in the body to supply energy. A person needs to keep blood sugar levels within a safe range to reduce the risk of diabetes and heart disease.
Hope this helps :)
Answer:
you need a lot of starch
Explanation:
for your glucode
Do you think we should use technology to alter/manipulate our genetic code?
no files no files no files no files no files no files no files no files no files no files no files no files no files no files no files no files
How might the effectiveness of nectar change if it had a bitter taste?
Answer:
Floral nectar is offered by plants to animals as a reward for pollination. While nectar is typically a clear liquid containing sugar and trace amounts of amino acids, colored nectar has evolved in several plant families. Here we explore the functional significance of the phenolic compounds that impart a dark brown color to the nectar of the South African succulent shrub Aloe vryheidensis. Flowers of this aloe are visited.
Explanation:
Hope this helps
How do electric charges behave?
Non-potable water may contain __________.
A)
disease vectors
B)
pathogens
C)
high levels of chemicals
D)
high levels of suspended solids
E)
all of the above
Answer:
E all of the above.
Explanation:
All of these things are true of non-potable water.
Describe a situation where your immune, lymphatic and circulatory systems would all be involved.
Answer
Lupus is a disease that occurs when your body's immune system attacks your own tissues and organs (autoimmune disease). Inflammation caused by lupus can affect many different body systems — including your joints, skin, kidneys, blood cells, brain, heart and lungs.
Explanation:
HELPPPP!!!
G:Green
B:Blue
-what percent of the offspring will have green skin???-
Answer:
75%
b
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a
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plzzzz ;)
Explanation:
why is there only one winter and summer a year
Diffusion/Passive Transport is molecules moving from more to less until equilibrium.
A. TRUE
B. FALSE
Healthy rain forest ecosystems provide ecosystem services, such as clean air, shade, food, and water. How might an increase in palm oil plantations affect humans who live nearby?
Answer:
Negatively affected.
Explanation:
Increase in palm oil plantations negatively affected humans who live in nearby area because this palm oil plantations is the cause of deforestation. Due to this palm oil plantations, deforestation occurs that leads to loss of habitat of many species as well as decrease in the area of forest which provides us clean air, shade, food, and water. The decrease in forest area also causes natural disaster such as floods in the region. Forests play a significant role in the prevention of floods in the region.
GIVING BRAINLIEST!!!!!!!!!!
How does the stomach function??
Answer:
The stomach has 3 main functions: temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. digestion of food.Explanation:
you could have just looked it up
What’s the answer????
Select the correct answer. Which of the following is true for balancing equations? A. The number of products should be equal to the number of reactants. B. The properties of products should be the same as the properties of reactants. C. There must be as equal number of compounds on both sides of the equation. D. There must be as equal number of atoms of each element on both sides of the equation.
Answer:
d
Explanation:
Y’all plz help I fell asleep and don’t remember
Answer:
A.
Explanation:
A mutation is least likely to affect a cell when the mutation reverses the order of bases in a DNA strand.
Which adaptation would most likely help a plant collect more energy for photosynthesis? A. Broad leaves B. Short stems C. Deep roots D. Large flowers SCIENCE
Holes also allow more sunlight to get through to the leaves below, which maximizes sun absorption and photosynthesis. Adaptation: During the heat of the day's sunlight, most plants open stomata (pores) in their leaves to take in carbon dioxide from the air for photosynthesis, while allowing some water to escape.
hope that helps.
Question is in picture
Answer:
Your excretory system attempts to cool your skin through evaporation
Explanation:
Sweat is produced from sweat glands which is part of the excretory system. It secretes through the skin in order to decrease temperarure
MY MOM GONNA WOOP ME I NEED RIGHT ANSWER
Hello, imjustAKID23.
The answer here should be “high diversity”. High diversity allows an ecosystem to be more flexible - thus allowing it to work better in the face of stress.
Does that answer your question?
help:/
Part 1: Comprehension Questions
1. What are two things mentioned in the reading that can happen that might affect an ecosystem?
2. Define ecological succession.
3. What is primary succession?
4. Describe an example of primary succession.
5. What is a pioneer species?
6. How long might it take for an ecosystem to become balanced?
7. What happens when an ecosystem is in equilibrium?
8. Define climax community.
9. Name two things that can disrupt a community.
10. What is secondary succession?
Answer: 1. One community replacing another as a result of changing abiotic and biotic factors. Establishment of a community in an area of bare rock that does not have topsoil. Lava flow destroys an ecosystem and hardens into bare rock. 2. Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. 3.Primary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals first colonize a barren, lifeless habitat. 4. Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed. 5. Pioneer species are hardy species which are the first to colonize barren environments or previously biodiverse steady-state ecosystems that have been disrupted, such as by fire. Some lichens grow on rocks without soil, so may be among the first of life forms, and break down the rocks into soil for plants. 6. THIRTY TO ONE HUNDRED YEARS . 7. Ecological balance has been defined by various online dictionaries as "a state of dynamic equilibrium within a community of organisms in which genetic, species and ecosystem diversity remain relatively stable, subject to gradual changes through natural succession." and "A stable balance in the numbers of each species . A healthy ecosystem is said to be in equilibrium, which is a relatively stable state that keeps population sizes within a sustainable range (not too many of a certain species alive or dead). ... Some bears will starve and fewer cubs will be able to prosper, leading to a smaller overall population the next year. 8.A climax community is the last stage in succession, a stage where an ecosystem reaches a stable state. It is a mature ecosystem. ... Climax communities are stable. 9. Disturbances such as fire or flood can disrupt a community. After a disturbance, new species of plants and animals might occupy the habitat. Over time, the species belonging to the climax community are likely to return. 10. Secondary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals recolonize a habitat after a major disturbance—such as a devastating flood, wildfire, landslide, lava flow, or human activity (e.g., farming or road or building construction)— ... brainliest? plzz
Explanation:
Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.
Answer:
B
Explanation:
If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.
Which one the following is the most stable?
Answer:
plz tell which is your following
Why do you think there are so many bones in the cranium? Why do you think we are born with separate cranial bones that later fuse together as we grow and develop?
Hi, rachellelunaa!!
I think the reason we have so many bones is because, firstly, the cranium is such a unique shape that we need multiple bones to form it. Also, another reason we are born with separate cranial bones is that when a baby is born, there is an incredible amount of pressure being administered to the baby during the process. The many unfused bones allow the child's head to be malleable, and therefore preventing damage to the skull and brain. As we grow, we no longer need these bones to be malleable and they fuse together.
I really hope this answers your question!!
The sutures are flexible, the bones can overlap during birthing, preventing the baby's head from pressing against the baby's brain and causing damage.
What are the cranial bones?Skeletal structure of the head. The cranium, which surrounds and protects the brain, is made up of cranial bones and facial bones (bones that form the eye sockets, nose, cheeks, jaw, and other parts of the face).
The two remaining cranial bones are covered by the frontal bone. The sphenoid bone and ethmoid bone are these.
Behind your eye sockets, the sphenoid bone supports the muscles of your face. At the peak of your nose, between your eye sockets, is the ethmoid bone.
Therefore, preventing damage to skull and brain, we are born with separate cranial bones.
Learn more about cranial bones here:
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What is cell?? Help plss:(
Answer:
Cell is the basic unit of life
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells have many parts, each with a different function.
A photo is attached for ur reference!
Hope it helps!
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Microorganisms that can produce ammonia from nitrogen gas
Answer:
Nitrogen-fixing bacteria
Explanation:
Describe why the discovery of deep sea thermal vents helps support the abiogenesis theory.
PLZ ASAP Coniferous trees flourish because they take the opposite approach of deciduous
trees, they grow (slow/ast) and die (young/old),
slow, old
fast, old
Slow young
Fast young
Answer: They grow slow and die old
Explanation: I just took a test with the same question and it said I was correct plus it is on this website https://untamedscience.com/biology/biomes/coniferous-forest-biome/
Coniferous trees flourish because they take the opposite approach to deciduous trees, they grow slowly and die old. Thus, the correct option for this question is A.
What are the characteristics of Coniferous trees?The characteristics of Coniferous trees are as follows:
They have leaves that are very thin in the shape of needles. These trees don't have flowers but produce cones. Due to this, they are called coniferous trees.These trees grow in areas that have snowfall. Hence these trees have needle-like leaves that do not allow the snow to rest on them.The approach and properties of coniferous trees are absolutely opposite to those of deciduous trees. This is because the environment of both conditions differs greatly.
When there are not enough nutrients present in the soil, coniferous trees generally flourish because they take the opposite approach with respect to deciduous trees. Due to this, they grow slowly and die old.
Therefore, coniferous trees flourish because they take the opposite approach to deciduous trees, they grow slowly and die old. Thus, the correct option for this question is A.
To learn more about Coniferous and deciduous trees, refer to the link:
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what is another term for regular reflection
Answer:
Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface
Answer:
Explanation:
Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface.
The law of reflection states that a reflected ray of light emerges from the reflecting surface at the same angle to the surface normal as the incident ray, but on the opposing side of the surface normal in the plane formed by the incident and reflected rays. This behavior was first described by Hero of Alexandria (AD c. 10–70).
Specular reflection may be contrasted with diffuse reflection, in which light is scattered away from the surface in a range of directions.
How many offsprings are formed from asexual reprodcution?
Answer:
They produce offsprings that are related to the parent, genetically identical to the parent.
Explanation:
Hope it helps :)