As you walk to physics class, you start out at a speed of 2 m/s, for a time of 120 seconds (you’re really excited to get to class). Then you see your friend and slow down to a speed of 0.5m/s for 30 seconds. You stop at your locker for 40 seconds (a speed of 0 m/s). You realize that you are about to be late so you hurry to class at a speed of 1 m/s and get to class just as the bell rings (4 minutes after your trip started). How far did you travel total?
Answer:
The total travelled distance is [tex]51065 \mathrm{~m}[/tex]
Explanation:
• Speed, time and distance is one of the most common and important topics in the Mathematics or Quant section.
• Calculate total speed;
[tex]\therefore \text { Total Speed }=2+0.5+0.0+1=3.5 \mathrm{~m} / \mathrm{sec}[/tex]
• Calculate total time taken;
[tex]\therefore \text { Total time taken }=120+30+40+14400=14590 \mathrm{sec}[/tex]
• To find total travelled distance, use the formula
[tex]\text { Distance }=\text { Speed } \times \text { Time }[/tex]
[tex]\mathrm{d} &=3.5 \times 14590 \\[/tex]
[tex]&=51065 \mathrm{~m}[/tex]
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For a neuron with an initial membrane potential at -70 mV, an increase in the movement of potassium ions out of that neuron's cytoplasm would result in the
The potassium ions are positively charged(cations) if the charge is -70mV the outflow of cations will cause a decrease in the potential. The potential will become lower than -70mV.
The given condition of an increase in the movement of potassium ions out of that neuron's cytoplasm would result in the hyperpolarization of the neuron.
Hyperpolarization is a change in a cell's membrane potential becomes more negative at a particular spot on the neuron's membrane
A hyperpolarization is an event or stage that takes place when some potassium channels remain open and sodium channels reset.The sodium-potassium pump keeps the concentrations of Na+ and K+ at constant disequilibrium to set the membrane potential of neurons.Increased potassium movement leads to more potassium ions out of that neuron's cytoplasm. It can be seen as a slight dip following the spike.Thus, the correct answer would be the hyperpolarization of the neuron.
Learn more about Depolarization:
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5. Name 3 things bacteria are "notorious" for?
Answer:
While pathogenic bacteria are notorious for such diseases as cholera, tuberculosis, and gonorrhea, such disease-causing species are a comparatively tiny fraction of the bacteria as a whole. Bacteria are so widespread that it is possible only to make the most general statements about their life history and ecology.
Explanation:
hope this helps.
any other questions ask me.
Which change will cause the gravitational force between a baseball and a soccer ball to increase?
A. moving the balls farther apart
B. wrapping the soccer ball in layers of duct tape
C. using a baseball with a thinner leather
D. removing the outer layer of the baseball
Answer:
I think the answer is B I'm not for sure though tell me if I'm wrong
Answer:
Wrapping the soccer ball in layers of duct tape.
hello pls help can you tell me if I got these right
Answer:
yes you got them right gj :)
Explanation:
Animals have an advantage over plants with the ability to move. What structure does animals not possess that allows us to be mobile?
Large central vesicle
Mitochondria
Chloroplasts
Cell Wall
Set of 25 green plants and 25 mushrooms were put in a cool, dark room for two weeks. Each set was watered daily with 50 mL of a 0.1% fertilizer solution. Which statement best explains why the green plants died and the mushrooms survived?
Answer:
This question lacks options, however, it can be answered based on general understanding.
The green plant died because of absence of LIGHT
Explanation:
Plants (green) are autotrophic organisms i.e. organisms that are capable of synthesizing their own food via a process called PHOTOSYNTHESIS. However, on the other hand, mushrooms (kingdom FUNGI) are heterotrophic organisms i.e. rely on other organisms for energy source and cannot make their own food.
Green plants strictly require light energy from the sun in order to perform the process of photosynthesis. According to this question, a set of 25 green plants and 25 mushrooms were put in a cool, dark room for two weeks and watered daily with 50 mL of a 0.1% fertilizer solution. The green plants, despite the nutrients and regular watering dies because they were not exposed to LIGHT in order to make their food via photosynthesis. However, since light is not a requirement for mushrooms to obtain food, they will surely survive.
please helpp, i'll give brainlest
which of the following statements cite evidence that supports or led to the discovery of the cell theory. select all that apply.
- development of the microscope
- schledians observation of plant cells in various samples of the plant tissue
- cells were found in animal tissue
- watson's and cricks discovery of the structure of dna
- one celled organisms reproduce by binary fission
- plants carryout photosynthesis
-meiosis
- spontaneous generation is accepted amount scientist
Which of the following is a benefit of using renewable resources?
A- Renewable resources are not affected by innovation.
B-Renewable resources contribute to a larger ecological footprint than
nonrenewable resources.
C- Renewable resources are resilient to environmental stresses.
D- Renewable resources are replaceable by healthy ecosystems.
PLEASE HELP!
Renewable resources are resilient to environmental stress. Therefore, option "C" is correct.
What are renewable resources?The energy produced by natural resources such sun and water is known as renewable resources. They are never finishing forms of energy and can be continuously replenished.
As non-renewable resources are on the verge of vanishing, there is an urgent need to innovate renewable sources of energy. The types of renewable resources are solar energy, wind energy, hydro energy, thermal energy, and biomass energy.
The benefits of renewable energy are less pollution, reusable sources of energy, less production of greenhouse gasses, and being environmentally friendly.
Renewable resources are more sustainable than non-renewable resources.
Learn more about renewable resources, here:
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In the Carbon cycle, what must NOT happen to your dead organic material to have it
become fossil fuel?
Answer:
Decompose
Explanation:
If the material decomposes the stored energy will be released.
There is no hard boundary between a coral reef and the open ocean. How does defining a boundary help scientists to better study a coral reef?
A.
Defining a coral reef boundary allows scientists to explain all ocean parts and interactions by studying the reef as a system.
B.
Defining a coral reef boundary allows scientists to focus on a smaller set of parts and interactions.
C.
Defining a coral reef boundary allows scientists to see how the parts of the reef interact with the parts of the rest of the ocean.
D.
Defining a coral reef boundary allows scientists to decide that the reef is not part of the ocean.
Light waves transmit energy and have direction. Light wave energy can
travel
a. through liquids only
b. as vibrations
c. through liquids and gases only
d. through empty space
someone please help me
Answer:
a. through liquids only
Answer:
the answer is d
Explanation:
because because light waves require a medium space is one of them because space is not so empty if it was we wouldn't be able to see the lights of the Stars there are far far away.
What is the answer here?
Answer:
This is to complex
Explanation:
This also doesn't really make sense LOL
Describe an example of the first law of thermodynamics
Answer: According to the first law of thermodynamics, energy can be transferred from place to place or changed between different forms, but it cannot be created or destroyed. For instance, light bulbs transform electrical energy into light energy, and gas stoves transform chemical energy from natural gas into heat energy.
Explanation:
Answer: The first law of thermodynamics states that: energy can neither be destroyed or created, it can only change forms. An example of this in an ecosystem would be when a plant absorbs the sun's energy and photosynthesizes, storing the energy as glucose.
Explanation:
Please help with Meiosis! Will give brainliest!!
List the phases for Meiosis I. ________________, __________________, _________________, ______________
List the phases for Meiosis II. ________________, __________________, _________________, ______________
During prophase I the chromosomes __________________ and become ______________________.
Chromosomes that are the same size and have the same genes are called __________________ _____________
Each half of a replicated chromosome is called a ____________________________________________________
Sister chromatids of a chromosome are identical _______________________________.
Answer:
List the phases for Meiosis I: Prophase I, Metaphase I, Anaphase I, Telephase I
List the phases for Meiosis II: Prophase II, Metaphase II, Anaphase II, Telephase II
During prophase I the chromosomes coil and become shorter.
Chromosomes that are the same size and have the same genes are called homologous chromosomes.
Each half of a replicated chromosome is called a chromatid.
Sister chromatids of a chromosome are identical copies of the same chromosome.
Explanation: I hope I helped and have a great day! ^-^
The air in the thermosphere is composed of atoms of _____ that are very far apart from each other.
Answer:
Explanation:
In the upper thermosphere, atomic oxygen (O), atomic nitrogen (N), and helium (He) are the main components of air.
explain how the oceans serve as a carbon reservoir. what are some of the effects of this on marine life?
Answer:
Carbon pollution is changing the ocean's chemistry, slowing its ability to uptake CO2, making it more acidic, and harming shellfish and other marine life we depend on. The ocean has absorbed about 29 percent of global CO2 emissions since the end of the preindustrial era.Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming.
Explain how a person could be born with an XX karyotype but develop male sex characteristics. Be specific.
Answer:
SRY-positive 46,XX testicular disorder of sex development.
Explanation:
If a fetus is conceived from a sperm cell with an X chromosome bearing the SRY gene, it will develop as a male despite not having a Y chromosome.
Perhaps you exercise to maintain good health. Maybe you excersise to lose weight. Or maybe you exercise to build muscles and get stronger we excersize for many reasons but no matter why we excerise our body systems work together. The three main body systems that are critical to vigorous exercising include all but one of those listed here that's the
Answer:
The answer is the integumentary system
Explanation:
This is just your first line of defense. It does not have anything to do with exercising, well on the inside(In a sense).
Answer:
its d
Explanation: its kinda obivious
how can we unlock the 90% of our brain that we never us???
Which of the following statements regarding prokaryotic and eukaryotic cells is true
Answer:
I would need the statements to answer that. however prokaryotic cells are plant cells and eukaryotic cells are animal cells
Answer:
They are typically smaller than eukaryotic cells. The DNA of a prokaryotic cell is contained in the nucleoid. There are several ways in which prokaryotic cells are different from eukaryotic cells. Firstly, they are generally smaller in size, their organelles are not membrane bound, and they have no nucleus. They, however, share commonalities with eukaryotic cells including the presence of a bilipid plasma membrane, presence of ribosomes and DNA.
Hope this helps, have a great day/night, and stay safe!
Which labels would correctly model photosynthesis?
Answer:
A. Carbon dioxide
B. Light energy
C. Oxygen
D. Glucose
E. Water
Explanation:
What are three organelles that are involved in the production of proteins?
Answer:
golgi bodies, ribosomes and endoplasmic reticulum.
Explanation:
Hope this helps!
Which of the following best shows the process of evolution?
O A lizard's color becomes brown as it sits on a log
O A bear goes into hibernation
O A plant loses its leaves in a drought
O A population of mosquitoes develops resistance to a pesticide
Answer:
A population of mosquitoes develops resistance to a pesticide
Explanation:
Evolution can be defined as the way the characteristics of a species change over several generations. This process relies on natural selection - a mechanism in which individuals that are better adapted to their environment survive and reproduce most successfully.
A population of mosquitoes developing resistance to a pesticide is an example of adaptation. This is how mosquitoes become adapted to their environment and increase their chances of survival. Eventually, most of the mosquitoes will be resistant thanks to natural selection. This is how mosquitoes evolve.
This is why the fourth option is the correct one.
A human liver cell has a different size and shape from a human muscle cell. What is the best explanation for these differences?
A. The cells perform different functions.
OB. One of the cells is used to reproduce more cells while the other is not.
OC. One type of cell develops into the other type of cell.
OD. One of the cells must have come from another species.
Answer:
A
Explanation:
A human liver cell would have a different size and shape from a human muscle cell because they perform different functions in the body.
The shape a cell would assume and its size depends on the function the cell performs. The functions of the liver in the body of humans differ greatly from the functions of muscles. While the former helps in detoxification, deamination, digestion, etc., the latter helps in support, movement, etc.
The correct option is A.
A human liver cell has a different size and shape from a human muscle cell because the cells perform different functions.
CELL:
Cell is the basic and fundamental unit of life. It is the simplest level of organization of an organism. Cells contain organelles that help them perform specific functions. Organs are made up of numerous cells. Similar cells perform similar functions while dissimilar cells perform dissimilar functions. Therefore, a human liver cell has a different size and shape from a human muscle cell because the cells perform different functions.Learn more at: https://brainly.com/question/22663686?referrer=searchResults
Does nucleic acid give you fiber?
Answer:
yes
Explanation:
Answer:
The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
Explanation:
hope this helps!!
The original template for the process of protein synthesis is—
a. DNA
b. Messenger RNA
c. Transfer RNA
d. Ribosomal RNA
Answer:
I think the answer is gonna be B
Brackish water can be found in which of the following ecosystems?
a. coral reefs
b. mangrove swamps
c. polar regions
d. deep sea
Answer:
The answer would be B. Mangrove Swamps
Explanation:
Brackish water is when freshwater meets with sewer water or salty water.
Brackish water can be found in the mangrove swamps ecosystem.
They are marked by halophytic trees, shrubs and different flora thriving in saline to saline tidal waters.
What is the mangrove swamps ecosystem?
Mangrove forests, also named mangrove swamps, mangrove shrubs or trees, are formative wetlands that appear inshore intertidal zones. Mangrove forests grow mainly in equatorial and subtropical spaces because mangrove trees cannot resist freezing .
It is distinguished by such qualities as a damp climate, saline habitat, waterlogged soil or sludgy soil.
Thus, Brackish water can be found in the mangrove swamps ecosystem.
To learn more mangrove swamps ecosystem click here:
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Why does the cell copy the DNA into mRNA instead of using the DNA itself to produce proteins?
Answer:
DNA is inside the cell nucleus. Transcribing this code to mRNA allows the information to leave the cell nucleus and produce proteins in the cytoplasm.
Explanation:
Answer:
magic mo kaya
Explanation:
hahahgahhaha joke lang po yan pero sorry hirap kasi
the freezing point of fresh water is ____ the freezing point of salt water?
O lower than
O related to
O equal to
O greater than