Select the correct answer. An object is acted upon by a force of 22 newtons to the right and a force of 13 newtons to the left. What is the magnitude and direction of the net force? A. 9 newtons to the right B. 9 newtons to the left C. 22 newtons to the right D. 35 newtons to the right E. 35 newtons to the left
Answer:The net force is the sum of all the forces acted upon an object. The direction of force depends on which side you are taking as a positive and negative force. If the force of 22 newtons is positive and the force of 13 newtons is negative, they are actng on the object on different directions, thus in order to get the net force, we just sum them up.
newtons
The net force is +9 Newtons.
Explanation
:
Answer: I think it's 9 newtons to the left
Explanation: Hope it helps
Activity Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question. Part A What are the student’s observations and inferences before he starts his investigation?
Answer:
OFFICIAL ANSWER (do not copy verbatim):
The student has observed that artificial fertilizer makes his plants grow faster and taller than plain soil. He knows that compost is a natural fertilizer. So, he infers that compost will make his plants grow at a faster rate than they grow in plain soil.
Explanation:
What are the applications of Bioanalytical Service?
Explanation:
hope its wht u r searching for
design an experiment to test substances X, Y, and Z to determine which one is a catalyst for the reaction.
Answer:
A+B C. Only one of the unknown substances is a catalyst, and the others are nonreactive with A, B, or C. When 10 mL of A is added to 10 mL of B the reaction takes twenty seconds. Bubbles form when the product C is created. The student prepares three test tubes, each containing both reactants A and B. She adds unknowns X, Y, and Z to test tubes 1, 2, and 3, respectively.
Answer:
Prepare three test tubes containing reactant A
Prepare three test tubes containing reactant B
Add one test tube of reactant B and one unknown to one test tube of reactant A. Repeat for other two unknowns
Time the reaction until the bubbling stops
The unknown that causes the reaction to occur the quickest is the catalyst
Explanation:
Did the test
Mechanical weathering _____ change the composition of a rock, whereas chemical weather ______. Question 8 options: Does; does not Does not; does
Answer:
Mechanical weathering does not change the composition
Chemical weathering does change the composition
Explanation:
Which statement is true of the two molecules below?
A. They contain very little energy.
B. They can bond together to form a disaccharide.
C. They have the same arrangement of atoms.
D. They are made of four different kinds of elements.
Answer:
They are made of four different kinds of elements
What is black hole in simple words?
Answer:
Not sure.....................
Answer:
here are some examples:
-darkness
- hollow
- hopeless
-isolated
-unimaginable
ect.
Explanation:
i...i
-----
hope this helped:)
What is the electron configuration of an element with atomic number 20? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2 2p6 3s2 D. 1s2 2s2 2p6 3s2 3p6 4s2 E. 1s2 2s2 2p6
Answer:
electron configuration is 2,8,8,2
Explanation:
1s2 2s2 2p6 3s2 3p6 4s2
why is the dominant allele called dominant.
A. There is always at least one dominant allele
b. there are always more dominant alleles in a genotype
c. it dominates the phenotype
d. the dominant alleles are the only kind that determine phenotype.
Answer:
It dominates the phenotype
Explanation:
Question 1 of 10
2 Points
Which of the following correctly compares the oxygen isotopes 160 and 180?
A. 160 has 16 neutrons, whereas 180 has 18 neutrons.
B. 160 has 8 neutrons, whereas 180 has 10 neutrons.
c. 160 has 16 protons, whereas 180 has 18 protons.
D. 160 has 8 protons, whereas 180 has 10 protons.
SUBMIT
Answer:
B. 160 has 8 neutrons, whereas 180 has 10 neutrons.
Explanation:
The proton of an element is also known as the atomic number. Oxygen has an atomic number of 8 and also a proton of 8. Neutron is however calculated by the subtraction of the mass number from the atomic number (proton).
This results in 160 having 8 neutrons because the mass number(16) is subtracted from the atomic number to give 8 neutrons, whereas 180 has 10 neutrons as a result of the mass number 18- the atomic number(8) to give 10.
Answer:
160 has 8 neutrons, whereas 180 has 10 neutrons.
Explanation:
Apeks approved
Normally, the
Pacific Ocean
is warm in the____
and
cool in the_____.
A. west, east
B. east, north
C.east,west
D.south,west
Answer:
Pacific ocean conditions are split: cold in east, hot in west
So, A is ur answer
And the sentence will be the
Pacific Ocean is warm in the__west__ and cool in the___east___.
Hope this helps..
Good Luck!
How does the nervous system work with the circulatory system
Answer:
look at the explanation
Explanation:
the circulatory system also known as the heart, lungs, brain and blood stream are all connected to the brains by nerves, sending small electric currents (commands) to the organs telling them what to do. when the nerves are stimulated, they send signals to the brain giving it information.
Why is the black hole asymmetric?
Answer:
black hole is so strong that, in order to escape it, an object would have to be moving faster than the speed of light, a feat that almost all physicists agree is impossible.
How does El Nino impact
climate in the US?
A. Precipitation increases in the
north and decreases in the south.
B. Winds in the south move east
causing increased tornadoes.
C. Winds in the north move west,
causing increased tornadoes.
D. Precipitation increases in the
south and decreases in the north.
During El Niño, the jet stream is oriented from west to east across the southern portion of the United States, making the region more susceptible to severe weather outbreaks.
Which of the following statements describes ways cellulose and starch are similar to and different from each other?
Explanation:
Similarities
Both starches and glycogen are polymers formed from sugar molecules called glucose. Each independent molecule of glucose has the formula C6H12O, and joining these subunits together in a certain way forms the long chains that make up glycogen and starch.
Sucrose, glucose and starch are related because they're all forms of carbohydrate.
Differences
Starch is formed from alpha glucose, while cellulose is made of beta glucose. The difference in the linkages lends to differences in 3-D structure and function. Starch can be straight or branched and is used as energy storage for plants because it can form compact structures and is easily broken down.
Which of the following describes what might happen if the septum in the heart ruptured? (2 points)
A. Blood from outside the heart would leak into the heart.
B. Blood entering the atria would leak into the ventricles.
C. Oxygenated and deoxygenated blood would mix in the heart.
D. Incoming and outgoing blood would mix, causing turbulence
option c is the answer
Explanation:
septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks
_______ such as the MCL and ACL connect bone to other bone at joints.
Are biogeochemical cycles transported by water??
Answer: Biogeochemical cycles are not transported by water.
Explanation: Biogeochemical cycles are not transported by water cycle because itself is a biogeochemical cycle.It is the key point of the cycling of the other biogeochemical cycles,this means it is part of the three important biogeochemical cycles.
Polar and tropical regions maintain fairly constant average temperatures because
Answer:
The continual motion of air and water reallocates heat energy throughout earth.
Explanation:
2. Which of the following synonyms for cried has the most negative nuance?
A.blubbered
B.wept
C.sniffled
D.sobbed
Blubbered means to cry noisily and uncontrollably wept means simply to shed tears sniffled means to sniff slightly. Thus, option A is correct.
What is a good illustration of nuance?A very little variation in meaning, sound, color, or someone's sentiments that is not generally very noticeable He kept a close eye on her face to pick up on every little expression. She sings with a warm tone and delicate refinement. You must be able to communicate the finer details of each word's meaning.
A very tiny variation in appearance, meaning, sound, etc.: Every subtlety of the woman's look has been captured by the painter. The subtleties of language are investigated by linguists Synonyms.
The unfavorable sentiment or emotion associated with a term is known as its negative connotation. A word's meaning can be affected by its connotations.
Therefore, Blubbered means to cry noisily and uncontrollably wept means simply to shed tears sniffled means to sniff slightly. Thus, option A is correct.
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Which type of geologic event has to occur to create an angular unconformity
Answer:
folding or tilting of rock layer
hope this answer correct (^^)
The type of geologic event that has to occur to create an angular unconformity is the folding or tilting of rock layers. The correct option is 3.
What is an angular unconformity?An erosional surface that truncates older, tilted sedimentary layers and is covered by younger layers that are oriented parallel to the unconformity is known as an angular unconformity.
Angular unconformity typically occurs when sedimentary rock layers are deposited on top of one another and inclined, with the upper layer being younger than the lower layer. The unconformity might be thought of as the time when there were no preserved sediments in the area.
Tilting of rocks can take many different forms, including forcing the rock upward or folding sedimentary rock.
Therefore, the correct option is 3.) folding or tilting of rock layers.
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The question is incomplete. Your most probably complete question is given below:
1.)The tilting of rocks or folding or uplifting of the rock.
2.) deposition of new sediments
3.) folding of tilting of rock layers
4.) by the setting of metamorphic rocks.
All animals, with the exception of sponges have which of the following characteristics?
heterotrophy, multi-cellularity, haploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, cell wall
heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
autotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
Answer:
C
Explanation:
Animals do not have a cell wall so that eliminates B. They also cannot be an autotroph, the only organisms that can be autotrophy are algae and plants, so this eliminates D. I hope this helps:)
Animals, with the exception of sponges have heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall. Thus, option C is correct.
what are the characteristics of sponges?
Sponges are sessile most primitive filter-feeders, it has cell based organization. It draw water through their pores and filter cells to gather food.
The skeleton system of sponges arise from collagen with reinforcing spicules. It is made up of calcium or silicon compounds.
The body of sponges are either radially symmetrical or asymmetrical.
Sponges have no tissue system, cardiovascular, nervous systems, muscles or sense organs.
Some species of sponges produce sexually, some produce one type of gamete, while species produce both.
Sponges release sperm into the water which are captured by other sponges as the food.
Sponges also do asexual reproduction such as budding.
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________ is a process that creates genetic variety in cells. (2 points)
Cell fission
Meiosis
Mitosis
Asexual reproduction
Answer:
B
Explanation:
I believe it is meiosis because there are two parts in which it helps to increase genetic variety. In prophase 1, the genes cross over, which increases the variety. Also, the chromosomes are assigned randomly in Metaphase 1.
Hope this helps:)
Answer: meiosis
Explanation:
Carefully study the diagram below and answer the questions that follow. a. Label the structures A to F b. Name two structures that are concerned with temperature regulation in Man. c. State two functions of D d. State two functions of G. e. Where in Man is structure G thickest? f. What labelled part is involved in excretion by the skin?
Answer:
a. A - Free Nerve ending
B- Hair erector muscle
C- Capillary
D- Sebaceous Gland
E- Sweat Gand
F- Epidermis
b. Two structures that are concerned with temperature regulation in Man are sweat glands and blood vessels. Sweat glands of the dermis, secrets sweat which then evaporate on the skin surface and maintain body temperature. constricted blood vessels retain the heat while dilated vessels allows heat loss.
c. Sebaceous gland is an exocrine gland that secret sebum having following functions:
protect skin from bacteria and microorganisms.reduces water loss from skin surface.d. G refers to stratum corneum, its functions are:
Forms a barrier to protect underlying tissues from damage.It contains keratin protein which keeps the skin hydrated.e. Stratum corneum is thickest in palms and soles in man.
f. Sweat glands are involved in the excretion by skin as they secret a fluid waste sweat and release it at skin surface.
question:
Carefully study the diagram below and answer the questions that follow. a. Label the structures A to F b. Name two structures that are concerned with temperature regulation in Man. c. State two functions of D d. State two functions of G. e. Where in Man is structure G thickest? f. What labelled part is involved in excretion by the skin?
Answer:
a. A - Free Nerve ending
B- Hair erector muscle
C- Capillary
D- Sebaceous Gland
E- Sweat Gand
F- Epidermis
b. Two structures that are concerned with temperature regulation in Man are sweat glands and blood vessels. Sweat glands of the dermis, secrets sweat which then evaporate on the skin surface and maintain body temperature. constricted blood vessels retain the heat while dilated vessels allows heat loss.
c. Sebaceous gland is an exocrine gland that secret sebum having following functions:
protect skin from bacteria and microorganisms.
reduces water loss from skin surface.
d. G refers to stratum corneum, its functions are:
Forms a barrier to protect underlying tissues from damage.
It contains keratin protein which keeps the skin hydrated.
e. Stratum corneum is thickest in palms and soles in man.
f. Sweat glands are involved in the excretion by skin as they secret a fluid waste sweat and release it at skin surface.
Access to potable water is most heavily limited by _______. a. money b. precipitation c. raw water supplies d. climate Please select the best answer from the choices provided A B C D
Answer:
A
Explanation:
Answer:
The correct answer is option a. Money. The potable water is the water, which is tested and safe for drinking purpose and cooking preparations. The water is tested and purified in industries. So, the potable water is costly. The normal water is available to every person. So, the people who have financial issues do not buy potable water. So, the money plays an important role in the access to potable water.
Which one of the following statements about the troposphere is
true?
Select one:
a. The troposphere is the atmospheric layer farthest from
the earth's surface.
b. The tropospheric gases move because of convection
currents.
c. The temperature in the troposphere ranges from 100° C
to -150° C.
d. The outer boundary of the troposphere is called the
stratopause.
e. Weather does not occur in the troposphere.
Answer:
B. The tropospheric gases move becuase of convection currents.
Explanation:
The uneven heating of the regions of the troposphere by the sun ( the sun warms the air at the equator more than the air at the poles )causes convection currents, large-scale patterns of winds that move heat and moisture around the globe. In the Northern and Southern hemispheres, air rises along the equator and subpolar ( latitude about 50 to about 70 north and south ) climatic regions and sinks in the polar and subtropical regions. Air is deflected by the Earth's rotation as it moves between the poles and equator, creating belts of surface winds moving from east to west ( easterly winds ) in tropical and polar regions, the winds moving from west to east ( westerly winds ) in the middle latitudes. This global circulation is disrupted by the circular wind patterns of migrating high and low air pressure areas, plus locally abrupt changes in wind speed and direction known as turbulence.
Limestone is a rock formed from calcite. Calcite can be easily dissolved by acids. Marble is a rock formed from limestone. Therefore, what can be said about marble? Question 4 options: Marble is a metamorphic rock Marble can be dissolved by acids Marble can be dissolved by acids All of these are correct
Answer:
All of these are correct
Explanation:
According to the question, marble is a rock formed from limestone, which in turn is also formed from Calcite. This shows that marble is a kind of metamorphic rock because a metamorphic rock is any rock that is formed by the alteration of other rocks caused by heat, pressure or chemicals etc. These changes that occurs in the previously existing rocks are called METAMORPHOSIS.
Hence, since marble is formed from limestone, it concludes that marble is a metamorphosed rock formed from a previously existing limestone rock. Also, since Calcite, a precursor of limestone that marble is formed from can be degraded by acids, both limestone and marble which are formed from it will also be dissolvable by acids.
How are pupae, larvae, and nymphs different?
Larvae are immature forms of an insect and look totally different from the adult. When eggs hatch, what come out of them are larvae.
Pupae and nymph are the intermediate stage between the immature and mature forms. Pupae are usually non-mobile but still look different from the mature form while a nymph still can move and already look similar to the mature form. Once a larvae becomes pupa, it will begin a complete metamorphosis into the mature form while a nymph will undergo several stages (instars) the mature form being the final stage.
Contains nitrogenous bases: DNA, RNA, or both.
Answer:
both
Explanation:
What's the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer
Answer:
K28. 1-
Explanation:
ICD-10 Code for Acute gastrojejunal ulcer with perforation- K28. 1- Codify by AAPC.