Please help!
Peter is pushing the rock but the rock is not moving. Choose the statement that describes the force(s) being applied in the image.
a boy pushing a rock, but the rock is not moving
The force of the push is an unbalanced force.
The forces acting on the rock are balanced.
A weaker force of pushing would result in unbalanced forces.
The force of gravity is pulling the rock upwards.
Answers
Explanation: Basically since the object is not moving we can consider this system to have a net force of zero (where are forces are balanced). In this problem, the force applied equals the static friction pushing back, and the force of gravity equals the normal force exerted by the ground on the rock.
Answer:2b
Explanation:
Related Questions
Does venueles carry bright red color?
Answers
Answer:
No
Explanation:
Arteries typically carry oxygenated blood, which is bright red in colour. The exception is the pulmonary artery which carries deoxygenated blood from the heart to the lungs.
Answer:
Venules carry deoxygenated blood. All blood in humans is bright red when oxygenated, but, a darker red when deoxygenated. Deoxygenated blood is darker due to the difference in shape of the red blood cell when oxygen binds to haemoglobin in the blood cell (oxygenated) versus does not bind to it (deoxygenated).
Explanation:
*sigh* its just how science do
Given that breaking bonds requires energy and forming bonds releases energy, explain how we know that cellular respiration releases energy overall?
Answers
Cellular respiration releases energy because the bonds in carbohydrates are broken during the reaction.
During cellular respiration, carbohydrates are broken down in a series of reactions, and the energy in the bonds is released as ATP, the energy currency of cells.
The reaction is in 3 steps:
GlycolysisKreb's cycleElectron transport chainThe summary of the reactions is represented by the equation below:
[tex]C_6H_1_2O_6 + 6O_2 ---> 6CO_2 + 6H_2O + ATP[/tex]
More on cellular respiration can be found here: https://brainly.com/question/23787978?referrer=searchResults
You have a water plant in a test tube. You place it outdoors. At what TIME OF DAY will
the oxygen level in the tube be the LOWEST?
Answers
what is the most common type of laboratory assay that is widely used to assess thyroid hormone concentration
Answers
B, Immunoassay
Specialized cells that communicate with each other through electrical and chemical signals are called:
Answers
Answer:
neurons
Explanation:
what percentage of extracellular fluid is accounted for by interstitial fluid and plasma?
Answers
Answer:
80%
Explanation:
Which of the following is the female gamete?
Answers
Answer:
a. Ovum is correct
Explanation:
you got it correct btw
Through which of the following room-temperature substances would sound travel the slowest? a water b rubbing alcohol c oxygen d glass
Answers
Answer:
oxygen I think soooooo yeah
Answer:
Oxygen
Explanation:
what traits can make a cell special, why are cells specialized…
(Minimum 5 sentences)
Answers
Answer:
They are modified by shape, function, or size. They are made to have certain roles in different parts of our bodies. These cells group together to make/form tissues. Then these tissues make up organs that we obviously need. Different specialized cells include blood cells, nerve cells, and reproductive cells.
Explanation:
When comparing plant cells to animal cells, which organelle is only present in plant cells?(1 point)
mitochondrion
cell membrane
cytoplasm
cell wall
Answers
Answer:
- cell wall -
Explanation:
The answer is a cell wall because the cell wall in a plant acts as a 'skeletal system'.
So tell yourself does, an animal that already has a skeleton, need the cell wall?!
NO! It dan't! That's why animals don't have the cell walls and plants do.
!!! Hoped that helped !!!
When comparing plant cells to animal cells, cell wall is only present in plant cells. The correct option is D.
What is cell wall?A cell wall is a structural layer found just outside the cell membrane that surrounds some types of cells.
It can be tough, flexible, and rigid at times. It provides structural support and protection to the cell, as well as acting as a filtering mechanism.
The cell wall is made up of a network of cellulose microfibrils and cross-linking glycans embedded in a matrix of pectin polysaccharides that is highly cross-linked. Lignin can be found in secondary cell walls.
It provides a structural framework for plant growth and serves as the plant's first line of defense against pathogens.
The cell wall must also retain some flexibility so that it can be rapidly remodeled in response to developmental, biotic, or abiotic stimuli.
Thus, the correct option is D.
For more details regarding cell wall, visit:
https://brainly.com/question/965751
#SPJ2
What are the three cell layers of retina, and how does the light travel to get to the receptor layer
Answers
When the concentration of ________ in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.
Answers
When the concentration of electrolytes in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.
OSMOSIS:
Osmosis is the movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane. Osmotic principle is based on concentration gradient i.e. difference in concentration across a membrane. Electrolytes represent solute such as salts, ions, sugar etc. Therefore, when the concentration of electrolytes in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.Learn more at: https://brainly.com/question/2404589?referrer=searchResults
What are the five areas that scientists use to paint the picture of how organisms are related
Answers
Answer:
Phylum.
Order.
Class.
Family.
Genus.
Species.
The oldest of Hawaii's volcanic islands are those that
Answers
The oldest of Hawaii's volcanic islands are those that are the farthest distance from the hotspot.
Hope this helps!
Answer:
The oldest of Hawaii's volcanic islands are those that are the farthest distance from the hotspot.
Which structure gives you voluntary control over urination?
Answers
Answer:
d. External urethral sphincter
Explanation: is correct. post protected
PLEASE HELP ASAP (30 POINTS)
A sound with more vibrations per second sounds higher than a sound with fewer vibrations per second.
Question 8 options:
True
False
Answers
Answer:
true
Explanation:
The action by which a fluid enters the microhematocrit tube because of the attraction between the fluid and the tube is called
Answers
The action by which a fluid enters the microhematocrit tube because of the attraction between the fluid and the tube is called capillary action.
What is the importance of microtubules in cell division?(1 point)
They provide a pathway for organelles to move into the newly formed cell.
They reform the nucleus in the divided cell.
They organize and pull the chromosomes apart.
.
They start the process of cytokinesis.
Answers
Microtubules are very important in a number of cellular processes. They are involved in maintaining the structure of the cell and, together with microfilaments and intermediate filaments, they form the cytoskeleton. They also make up the internal structure of cilia and flagella.
Answer:
C) They organize and pull the chromosomes apart.
Explanation:
in the comments!
Hope this helps for all the other students looking for the answer!
why is the digestive tract of the frog well vascularized
Answers
The digestive tract of the frog is well vascularized because it aids in the absorption of nutrients.
The digestive tract of a frog is a hollow long tube that extends from the mouth to the anus which helps in the ingestion and digestion of food.
The digestive tract of frog has the following characteristics:
alimentary canal of the frog is not long, that is, it is short. It has accessory organs of digestion such as liver, gall bladder and pancreas.All the digested food substances are absorbed at the small intestine due to the presence of microvilli.
This microvilli is made up of a central core that is vascularized, that is, it contains artery, vein and lymphatic capillary.
Therefore, the vascularized microvilli of the small intestine of frog help in the absorption of nutrients.
Learn more here:
https://brainly.com/question/12993303
when was the last time that you had your vital signs taken ?how was the result?
Answers
Answer:
Normal vital sign ranges for the average healthy adult while resting are: Blood pressure: 90/60 mm Hg to 120/80 mm Hg. Breathing: 12 to 18 breaths per minute. Pulse: 60 to 100 beats per minute.Vital signs are measurements of the body's most basic functions. The 4 main vital signs routinely checked by healthcare providers include: Body temperature. Pulse rate.Checking vital signs is an important skill to learn, because it tells us how the person's body is functioning, helping us to monitor current conditions and alerting us to changes in health status. It can also give us clues to possible medical conditions that have yet to be diagnosed.
Use the same link to answer the following
question
Why Is Biodiversity Important? Who Cares?
Name three biological services provided by
biodiversity
Answers
Biodiversity has been defined as the life that lives and interacts within the ecosystem. It is important as provides proper functioning of the ecosystem and supports life on earth.
What is Biodiversity?Biodiversity is the various forms of life and factors that live and exhibit interaction in a particular ecosystem and habitat. It is important as it includes the biogeochemical cycle that provides nutrients, ecosystem services, pollination, and reproduction.
Biodiversity provides various biological services, including food produced by plants for energy, oxygen for cellular respiration and photosynthetic reactions, and the biogeochemical cycle that includes the cycling of the nutrient through various spheres.
Therefore, biodiversity is an important part of the biosphere.
Learn more about biodiversity, here:
https://brainly.com/question/16921363
#SPJ2
Answer:
Biodiversity has been defined as the life that lives and interacts within the ecosystem. It is important as provides proper functioning of the ecosystem and supports life on earth.
What is Biodiversity?
Biodiversity is the various forms of life and factors that live and exhibit interaction in a particular ecosystem and habitat. It is important as it includes the biogeochemical cycle that provides nutrients, ecosystem services, pollination, and reproduction.
Biodiversity provides various biological services, including food produced by plants for energy, oxygen for cellular respiration and photosynthetic reactions, and the biogeochemical cycle that includes the cycling of the nutrient through various spheres.
Explanation:
I NEED HELP IDENTIFYING THE STAGES!!! PLZ HELP!!!
Interphase, Prophase, Metaphase, Anaphase, or Telophase
Answers
Answer:
prophase
Explanation:
I learned that prayer is _______ to god, who is never busy to hear my prayers.
Answers
Answer: I learned that prayer is talking to god, who is never busy to hear my prayers.
Explanation:
What differences are there in the growth of the human population compared to the animal/plant population?
Answers
Answer:
Explanation:
In both plants and animals, there are parts of the body designed to carry the nutrients needed for growth. In a animal it is blood and in a plant, it is the Xylem and Phloem Tissue Humans are born with a set number of limbs and if one get's cut off it cannot regenerate. Because of this, we are increasingly cutting into resources that other species must use in order to survive. We have hindered, or even ended the lives, of numerous species. Today, 99% of the species still remaining on this planet are at risk because of human activity alone.The similarities in the population growth of humans with respect to plants and animals is that, in the three cases, the growth occurs exponentially with respect to the initial number of specimens
A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) ____________ neuron
Answers
Answer:
! autonomic motor
Explanation:
The graph above shows the initial rate of an enzyme-catalyzed reaction at
different substrate concentrations in the presence of a constant
concentration of the enzyme.
Connect the primary structure of the enzyme to its overall shape.
Answers
The overall shape of an enzyme changes after the attachment with the substrate.
Enzymes are proteins composed of amino acids that linked together in one or more polypeptide chains. This sequence of amino acids in the form of polypeptide chain is known as the primary structure of an enzyme.
The tertiary structure is the enzyme's overall three dimensional structure, which occurs due to interactions between the R groups of the amino acids that make up the protein and the active sites of the substrate with which the enzyme can attach so we can conclude that the overall shape of an enzyme changes after the attachment with the substrate.
Learn more: https://brainly.com/question/25709046
The primary structure of enzymes determinies their functions and their secondary and tertiary structures. R groups remain in the center of the molecule and stabilize the structure.
--------------------------
To answer this question, we need to remember that enzymes are proteins, and hence, they share many properties. From now on, we will refer to the enzyme as proteins or molecules.
AMINO ACIDSAmino acids are organic molecules. They are composed of a central carbon, one hydrogen atom, one carboxyl group (COOH), one amine group (NH2), and one R group.
The composition of the R group is what makes them different from each other.
PROTEINS -enzymes-Proteins are amino acid polymers linearly arranged and connected by peptidic bonds. These molecules characterize by their different structures.
The peptidic bond is the union of two amino acids by their carboxyl and amine groups.
The R group of each amino acid is involved in stabilizing the molecule through their interactions.
The amount of amino acids that compose the polypeptide and their order in the chain determines the primary structure of the protein. The primary structure of the proteins determines the tertiary one.
Protein functions also depend on the aminoacids sequences. Proteins with different functions have different sequences. And among species, proteins with similar functions have similar structures.
PROTEIN STRUCTURE
The primary structure refers to the sequence in which the amino acids are arranged in the chain.
The secondary structure is the folding that the polypeptide chain adopts thanks to the formation of hydrogen bonds.
The three-dimensional structure makes them even more stable in the environment and capable of properly accomplishing their biological role.
When proteins are composed of more than one polypeptide subunit, they arrange in a fourth structure, named quaternary structure.
The hydrophilic R-groups remain in the center of the molecule, facing the protein interior, and avoiding interaction with water.
-----------------------------------------
Related link: https://brainly.com/question/13450993?referrer=searchResults
https://brainly.com/question/18884307?referrer=searchResults
Scientists create models to help make sense of the natural world. Models are powerful tools that help scientists predict how things work. Models should be scientifically testable. When a model fails to predict correctly, the model must be revised or replaced. A good example of this kind of model would be one that represents an animal or plant cell as drawing to illustrate the parts of the cell.
Answers
Answer:
The answer is C, two dimensional module
Explanation:
I took the k12 test.
which statement regarding normal microbiota of the human respiratory system is false?
Answers
Given what we know about the respiratory system, we can confirm that the statement regarding normal microbiota of the human respiratory system that is false is option B " The upper respiratory tract is mostly sterile".
As far as the human respiratory tract and system, it was previously believed that the upper tract contained bacteria while the lower respiratory tract was sterile. Recently, however, this has been proven to be false. Bacteria are in fact present in the entire respiratory tract even in healthy individuals. For this reason, options a, c, and d are true, and the only false option present is b.
This question was answered based on the complete question found online that states:
Which statement regarding normal microbiota of the human respiratory system is FALSE?
a) The trachea normally may contain a few bacteria.
b) The upper respiratory tract is mostly sterile.
c) The ciliary escalator in the bronchial tubes keeps the lower respiratory tract nearly sterile.
d) Potentially pathogenic microorganisms are present in non-sterile portions of the respiratory tract but usually do not cause disease.
To learn more visit:
https://brainly.com/question/8401861?referrer=searchResults
Receptors that are especially important for helping a person maintain balance are located in the (A) gyrus cinguli (B) inner ear (C) tendons (D) ossicles (E) ligaments
Answers
The receptors that aid in allowing a person to maintain balance are located within the inner ear.
The human ability to walk upright without falling, and a wide variety of other tasks that we perform as all thanks to our ability to maintain balance. This ability is given to us by structures located deep within the inner ear.
The inner ear is located deep within the lateral side of the head. This ear contains 3 semicircular canals or ducts, which are tiny structures filled with liquid. Each of these canals has an expansion at its end known as the ampulla, which holds within it the very small cellular balance receptors called crista.
To learn more visit:
https://brainly.com/question/23972743?referrer=searchResults
is SARS a common virus?
Answers
Answer: SARS is not a common virus, it is a viral respiratory illness that was recognized as a global threat. it is spread through close contact. Although it is a very serious illness, it is rare to get. only eight persons were laboratory-confirmed as SARS cases.
Explanation: