Explanation:
Given that,
The force of gravity is 30 N
Normal force is 30 N
Applied force is 6 N (right)
Net force is 20 N (left)
We need to find the friction force of the object. We know that friction is an opposing force. It always acts in the opposite direction of the applied force. The magnitude of applied force and friction force is same but direction is different.
Hence, frictional force is 6 N to the left.
a sample of an unknown liquid has a volume of 12.0L and a mass of 6g. what is its density? show your work explain how you determined this value brainly
Explanation:
12.0L =12000cm^3
[tex]density = \frac{mass}{volume} [/tex]
[tex] = \frac{6}{12000 } \\ = 0.0005 {gcm}^{3} [/tex]
The following is a list of the steps that occur in the production of an auditory sensation. 1. The pressure wave distorts the basilar membrane on its way to the round window. 2. Movement of the tympanic membrane causes displacement of the malleus. 3. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve. 4. Movement of the malleus causes movement of the incus and stapes. 5. Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane. 6. Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct. The proper sequence for these steps is:___________.A. 2,4,1,6,5,3B. 2,4,6,3,5,1 C. 2,1,4,6,5,3D. 2,4,6,1,5,3E. 2,5,4,6,1,3
Answer:
The correct answer is option D, that is, 2,4,6,1,5,3.
Explanation:
With the approaching of sound waves, ear pinna mediates it towards the external auditory canal, this makes sound waves to reach the tympanic membrane. This results in the vibration of the tympanic membrane, and as the malleus, that is, the first ear ossicle, which is attached to the tympanic membrane gets displaced.
This movement of the malleus further moves the stapes and the incus. As the footplate of the stapes is associated with the oval window, the movement of the oval window takes place. This movement of the oval window creates pressure waves in the vestibular duct's perilymph. The movement of these pressure waves takes place from the Oval window to the Round window.
At the time of this movement, the pressure wave distorts the basilar membrane on its path to the round window, resulting in the vibration of the basilar membrane and the hair cells situated in the membrane against the tectorial membrane.
The stimulation of the sensory neurons takes place in the vestibulocochlear nerve's cochlear branch due to the displacement of the stereocilia. Post this, information reaches the auditory cortex in the temporal lobe's superior temporal gyrus, and hearing takes place.
Option D is the one that shows the correct sequence of steps in an auditory sensation. In this case, the sequence is 2,4,6,1,5 and 3.
We can arrive at this answer because:
At the beginning of auditory sensation, the pinna turns to the external acoustic meatus, directing the sound waves to the tympanic membrane.These waves provoke an intense vibration in the tipanic membrane, which provokes the displacement of the malleus.The displacement of the malleus causes a movement that also displaces the stapes, the incus, and the oval window.The movement of the oval window causes other waves that press against the round window.This causes the basilar membrane and hair cells to vibrate, causing stimulation of sensory neurons.At that point, auditory information reaches the auditory cortex in the temporal lobe, allowing hearing to take place.
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Which of the following is a distinct structure found specifically in the liver, spleen, and bone marrow?
Select one:
a. Sinusoidal capillaries
b. Fenestrated capillaries
c. Venous sinus
d. AV anastomoses
e. Continuous capillaries
Answer:
option A is correct
Explanation:
Consider the cladogram. A cladogram is shown. Roundworms have the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom. Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom? sponges roundworms annelids chordates
Answer:
The correct answer is - roundworms.
Explanation:
The answer is already mention in the question, however, the detailed answer is as follows:
The characteristics that are given in the question are true tissues, bilateral symmetry, and a pseudocoelom. Worms or helminths are known as primitive form of organization of the Bilaterians. All three group of worms or helmints have a basic bilateral symmetry.
These organisms inaugurated various characteristic that are found and carried by other animals such as true tissues, bilateral symmetry, and a pseudocoelom.
Thus, the correct answer is - roundworms.
Answer:
its b
Explanation:
which of the following is NOT a type of volcano?
Answer:
Eliminate from the following
Explanation:There following are the only types of volcanos
Cinder cones,composite volcanoes,shield volcanoes and lava domes
Which of these questions can be answered using science? Is human travel beyond our solar system possible? Should the use of green energy be increased? What is the best vacation spot? Which is the best online store?
Answer:
"Is human travel beyond our solar system possible?" can be answered using science.
Explanation:
I just took the test.
Hope this helps! - J
The question that can be answered by science is "Is human travel beyond our solar system possible". Thus, the correct option for this question is A.
What is Science?Science may be defined as a branch of scientific study that involves the application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.
It can broadly be classified into three categories such as Physics, Chemistry, and biology. Each sub-classification illustrates its own field of detailed study.
Science always deals with the concept of nature as well as natural phenomena. So, among the given options, the solar system is an important component of it.
The answer to this question is little bit complex but definitely the answer should be determined with the help of science only.
Therefore, the question that can be answered by science is "Is human travel beyond our solar system possible."
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Which of the following California animals is found in both marshlands and grasslands?
Answer:
pronghorn antelope.giant kangaroo rats.gophers.mule deer.Farming, grazing of livestock, mining, and drilling combined account for: Over 1/2 of deforestation About 1/3 of deforestation 3/4 of deforestation All of deforestation
Answer:
Over 1/2 of deforestation
Explanation:
Farming, grazing of livestock, mining, and drilling combined account for Over 1/2 of deforestation or more than half of deforestation.
These are few of the major causes of deforestation which is continuously destroying forests and wildlife that leads to global warming.
Forests are destroyed for farming purposes, overgrazing by cattles, urbanization of forests in industries and towns, mining, and drilling should be controlled to save deterioration of the earth.
Hence, the correct answer is "Over 1/2 of deforestation ".
A week after a near-drowning incident, a 6-year-old boy presents with respiratory distress, tachypnea, and fever. What should you suspect
Answer: I would suspect there was actually something in the water that caused this. Maybe the child swallowed some of the water.
Explanation:
Shown above
Scientists are able to reproduce certain plants and animals by cloning them in laboratories. The diagram shows the steps of cloning using tissue cultures. Do you think cloning is a form of asexual reproduction? Explain your answer using evidence from the diagram
Answer:
Yes.
Explanation:
Yes, cloning is a form of asexual reproduction because there is no fusion of sperm and eggs takes place. the animal which is formed from this process is identical of that organism because it is produced from the tissue of that single animal. in 1996, first mammal is produced from cloning was sheep named dolly at the Roslin Institute in Scotland. In cloning, the egg is taken from female organism and remove the nucleus from the egg then the desired organism cell is taken and fuse with the nucleus with the help of electricity. Then implant this embryo in the body of first organism from where egg is taken and after that the embryo turns into a baby, this process is called cloning.
Answer:
Yes, cloning is a form of asexual reproduction. The diagram shows that new plants form from a single parent plant, which means that the offspring are genetically identical to the parent.
Explanation:
Edmentum
When objects of two different temperature are in contact, what happens?
Answer:
The answer is C.
Explanation:
This is because the objects will exchange thermal energy, until thermal equilibrium is reached, i.e. until their temperatures are equal. We say that heat flows from the hotter to the cooler object.
Energy is transferred from a warmer to a cooler object through the phenomenon of heat. For instance, a large pan of lukewarm water will gain heat from a lit match (a higher temperature object) (lower temperature object). Thus, option C is correct.
What change in temperature when object are in contact?It feels warmer in your hands to hold a hot cup. The heat is moving from one object to another, which is what you are feeling. Your hands receive the hot chocolate's thermal energy.
Heat is exchanged when two objects are at different temperatures. Up until the two items are at the same temperature, the cooler object warms up. Always, heat energy moves from a hot object to a cooler one.
The colder end will get energy from the hot end as it passes through the rod. The temperature will eventually equalize across the entire rod. Wearing gloves is crucial when working with hot metal, for this reason.
Therefore, The warmer object transfer heat energy to the cooler object.
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Which structure is located between the trachea and a bronchiole? A. epiglottis B. pharynx C. alveolus D. bronchus
Which of the following organisms convert energy from the sun into chemical energy?
Answer:
This would include any plant/moss/tree/any autotroph.
Explanation:
Autotrophs are capable of making their own food, unlike heterotrophs who consume other organisms and autotrophs to receive nutrients.
What are the two components of the scientific name of a species in the Linnaean system? Select all that apply. Genus, Specific epithet, Phylum, Family.
Answer:
Genus, Specific epithet
Explanation:
The scientific name was created to establish a standardized language that would allow scientists and scholars around the world to be able to present living beings independently of their native language.
For this purpose, it was decided that the scientific name would be a binomial composition, that is, it would use two names. The first name refers to the genus to which the species belongs, the second name refers to the specific epithet that is the specific descriptor of that species. In addition, the scientific name should be written in italics and have the first initial letter written in uppercase. Ex: Homo sapiens.
Complete urinary obstruction causes which of the following? (Select all that apply.) Increased urinary stasis Increased urinary frequency Decreased hydrostatic pressure Decreased glomerular filtration Increased predisposition to infection
Answer:
hydrostatic pressure increaes and decreased in glomerula filtration and increase in urinary stasis
Explanation:
Atmospheric nitrogen can be fixed by nitrogen-fixing bacteria. Arrange the following forms of nitrogen from the atmospheric N stage to the final form that enters the roots. 1. Ammonia 2. Nitrogen gas 3. Ammonium ion 4. Nitrite 5. Nitrate
Answer:the answer is ammonia
Explanation:the nitrogen fixing bacteria fix the nitrogen as ammonia
Scientists want to track the wind speeds and precipitation for a hurricane that will affect the entire East Coast of the United States. Which weather equipment would be best to measure the impact of the storm for this entire region? A. an anemometer B. a rain gauge C. Doppler Radar D. global positioning system (GPS)
Answer:
A anemometer an instrument for measuring the speed of the wind, or of any current of gas.
GPS is to see where you on on the earth so this is a no.
rain gauge only shows the amount of rain so this is a no
Doppler radar determine's the location and velocity of a storm, clouds, precipitation. So therefore, this is your answer.
Explanation:
Which of the following sequences is correct for the downhill movement of electrons during cellular respiration? A. glucose – citric acid – ATP – NAD+ B. glucose – NADH – electron transport – O2 C. glucose – pyruvate – ATP - oxygen D. glucose – ATP – electron transport - NADH E. glucose – Kreb’s cycle – NADH - ATP
Answer:
B. glucose – NADH – electron transport – O2
Explanation:
This is the sequence from glycolysis in which glucose molecules are split down to pyruvate, to oxidative phosphorylation.
During this process the electrons are released from glucose molecule as it is oxidised multiple times as pyruvate, and other molecules formed subsequently in Kreb's cycle, until the oxidative phosphorylation is reached .
The makes the carrier molecules to be reduced.Thus NAD→NADH,FAD→FADH .
The electrons from above are transferred in hydrogen atoms to matrix by these co-enzymes.Where the H is split to electrons and protons.
The electrons for the ETC, produce the PMF for transporting protons into the intramembrane space.
The concentration of protons generated the electrochemical gradients which is needed to produce energy for for phosphorylation of ADP with Pi to form ATP by ATpase synthase.
The electrons moves as chain,and this is finally accepted by oxygen as the final electron acceptor.
Please help! Will give Brainliest!
Answer:
A. Do bees fly faster before or after feeding?
Explanation:
Because of the observations made, you can assume the answer has something to do with the bees weight, or wing support. Because the bee probably has a harder time flying when it has more weight on it, the answer is probably A.
Explain why fermentation stops after
a certain time in making
making bread?
Answer:
The yeast die at 140° F
Explanation:
The fermentation process is caused by the living organisms called yeast feeding on the sugar in the dough. As the yeast feed on the sugar they release CO² which causes the bread to rise but once the bread in the oven reaches 140° all the yeast are killed off and the fermentation process stops.
The process of fermentation stops after a certain time in making bread because the organism which carries this process has been killed.
What do you mean by Fermentation?Fermentation may be defined as a process a chemical process by which molecules such as glucose are broken down anaerobically in the presence of yeast.
During fermentation, the yeast produces excess carbon dioxide due to which the dough of bread swells. But after the completion of fermentation when bread places in the oven or any other warmer temperature, it killed the yeast, and hence fermentation stops.
Therefore, the process of fermentation stops after a certain time in making bread because the organism which carries this process has been killed.
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Select the correct answer from each drop down menu.
During an experiment, readings for blood pressure in a person's body were found to be constant. However, when measured by a
different blood pressure cult, the readings differed by 15 points for each reading. This difference indicates that the results are
but not
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dimentum. All rights reserved
Answer:
The results are precise but not accurate
Explanation:
Precision is the term that refers to the degree of agreement between measured results. This means that the measurements of the finished system are very similar and with equal differences, under the same conditions.
An example of this is the results shown in the question above, which are very similar. In addition, these results do not have the "real and absolute value" and therefore are not accurate.
Una planta de flores púrpura se cruza con una planta de flores blancas, obteniéndose una descendencia en la segunda generación filial de 50 % heterocigotas, 25% homocigotas dominantes y 25% homocigotas recesivas. (el color púrpura domina sobre el blanco) Diga: ¿Qué genotipos y fenotipos tienen los padres para que se cumpla esta proporción en la segunda generación? ¿A qué la ley que corresponde? ¿Por qué los padres presentan ese genotipo y cuál es el fenotipo que expresan la segunda generación filial? Explique. Demuestre con cruces
Answer:
Los padres son homocigotas y la F1 estará formada por individuos heterocigotas
Explanation:
El cruzamiento entre un ejemplar homocigota dominante P (flores púrpura) y un homocigota recesivo p (flores blancas) para un rasgo determinado por un sólo un gen con dominancia completa producirá una generación filial F1 100% heterocigota. Por su parte, cuando cuando estos individuios cuyo genotipo es Pp se cruzan entre sí, los genotipos esperados en la F2 serán 1 (PP, homocigota dominante): 2 (Pp, heterocigota): 1 (pp, homocigota recesivo). Esta aserción corresponde a la segunda ley de Mendel, la cual es conocida como la Ley de Segregación Independiente.
Which of the following questions is the most testable through scientific experimentation? Will mark brainliest, plz help A. which gelatin takes longer to set: gelatin with fruit or gelatin without fruit B. Which fruit looks more attractive in gelatin: bananas or apples C. Which tastes better: gelatin with fruit or gelatin without fruit D. Which fruit do more people buy in one year: bananas or apples
Answer:
Which gelatin takes longer to set: gelatin with fruit or gelatin without fruit.
Explanation:
In humans, the ability to roll up the sides of the tongue into a U-shape is controlled by one gene. Ability to roll the tongue is dominant to the inability to roll it. If two people who can roll their tongues each had one parent who could not, what is the probability that they will have a child who cannot roll his/her tongue
Answer:
25%
Explanation:
male
can roll tongue - cannot roll tongue
female
can roll tongue - cannot roll tongue
If they have a child, the possible combinations are:
1)
father's gene: can roll tongue
mother's gene: can roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
2)
father's gene: can roll tongue
mother's gene: cannot roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
3)
father's gene: cannot roll tongue
mother's gene: can roll tongue
RESULT = THE CHILD WILL BE ABLE TO ROLL HIS/HER TONGUE
4)
father's gene: cannot roll tongue
mother's gene: cannot roll tongue
RESULT = THE CHILD WILL NOT BE ABLE TO ROLL HIS/HER TONGUE
Immigration will cause a population to increase if
A. the birth rate is greater than the death rate
B. the birth rate and death rate are balanced
C. the birth rate doubles and the death rate does not
D. the death rate is greater than the birth rate
Answer:
If the birth rate is greater than death rate.
Many male birds will expend A great deal of energy building nests. Females will mate with the males who build the best nest. This is best described as an example of ___.
a) natural selection
b) sexual selection
c) runaway selection
d) an invasive species
e) disruptive selection
Answer:
B
Explanation:
Female birds mate with the males who build the best nest is the example of option b. sexual selection.
Sexual selection is a mode of natural selection in which one sex members choose the mate with the member of the other sex for mating.
These members of the biological sex prefer opposite sex members for species-specific characteristics in individuals of the other sex such as best building nest in birds. Other male birds compete with members of the same sex to get selected by members of the female birds in this instance.Thus, the correct answer is option b. sexual selection as female birds prefers species-specific traits to select their mating partner by best nest building by males.
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Which of the following would ATP NOT be used for as energy? A. Healing a cut B. Osmosis C. Push ups D. Keeping warm
Answer:
B. Osmosis
Explanation:
Answer: B: Osmosis
Explanation: Since osmosis is a simple diffusion it does not require ATP.
Which statement about balancing selection is correct? View Available Hint(s) Hint 1.opened hint What is balancing selection, and how does it differ from other forms of selection? Which statement about balancing selection is correct? When balancing selection occurs, no single phenotype has a distinct advantage over others in terms of fitness. When balancing selection occurs, all phenotypes have equal fitness. When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare. When balancing selection occurs, phenotype does not matter.
Answer:
Correct statement: When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare
Explanation:
You will find the explanation in the attached file due to technical problems.
Human Bones
Name three components of bones and describe
their function.
Answer: 1st the periostneum which is the outside of the bone and a thin but dense layer that has nerves and blood vessels
2nd compact bone. It is very smooth and very hard
3rd and lastly Cancellous, this looks a little like a sponge but much harder.
Explanation:
Answer:
The periosteum is a thin, dense membrane that contains nerves and blood vessels that nourish the bone.
Compact bone is smooth and dense. It is the hard part of the bone.
Cancellous bone looks like a sponge and protects the bone marrow.
Bone marrow is a thick jelly that makes blood cells.
Explanation:
These are the check offs for edge 2021
can DNA be extracted from dead cells
