Answer:
[tex]V =2m/s[/tex]
Explanation:
Given:
Represent
- Susan's velocity with [tex]V_s[/tex]
- Michael's velocity with [tex]V_m[/tex]
[tex]V_m = 7m/s[/tex] eastwards
[tex]V_s = 5m/s[/tex] westwards
Required
Determine how fast is [tex]V_s[/tex] relative to [tex]V_m[/tex]
From the question, one train moves eastwards while the other moves westwards.
This means that travel in opposite travel and the relative speed (V) is calculated as:
[tex]V = V_m - V_s[/tex]
Substitute values for [tex]V_s[/tex] and [tex]V_m[/tex]
[tex]V =7m/s - 5m/s[/tex]
[tex]V =2m/s[/tex]
Hence, the Susan's train is moving 2m/s in relative to Michael's train
What conclusions can be drawn from the objects that Leeuwenhoek and Hooke observed in
their microscopes
Answer:
Antony van Leeuwenhoek1 (Fig. 1) found great joy in God’s smallest creatures. He first discovered protozoans in his youth. The Dutch haberdasher retained a child-like joy of discovery from his youth until his death at age 90. He lived to see tiny microbes though his homemade microscopes. He loved to grind and focus a new lens in order to see the unseen world. Leeuwenhoek spent countless hours grinding tiny lenses and looking through them. This Christian lay biologist even used candlelight to see specimens at night. For Leeuwenhoek, the amazing diversity of tiny life forms revealed under his homemade microscopes glorified God as much as looking at stars through a telescope. Leeuwenhoek was born in South Holland in 1632. As a young adult, he became a cloth merchant (also called a draper, or haberdasher). In 1668, he started his biological study as a hobby after seeing beautiful microscopic pictures while making a visit to London. After years of careful study, Leeuwenhoek (Fig. 2) made the microscope famous. In his lifetime, he became the father of microbiology and opened mankind to the world of microorganisms.
Explanation:
Jellyfish live in salt water. They have organs (and cell organelles) that pump the salt out of their bodies. The jellyfish body is actually filled with fresh water. Animals like sea turtles and whales eat them even though there are few or no calories in a jellyfish. Use your understanding of osmosis to explain this.
Answer:
thanks
Explanation:
Answer:
The animals like sea turtles probably eat the jellyfish because they enjoy the flesh of the jellyfish, not the content of it inside.
Hope this helps you!
Please take some time to help me really quick :)
Answer:
glycolysis
Explanation:
A model of the cell cycle is shown here. A student wants to refine the model to include more details about the M phase. Modify the model by selecting the parts of the cell cycle that would be included in the M space.
A) anaphase
B) apoptosis
C) interphase
D) metaphase
E) prophase
A) anaphase
D) metaphase
E) prophase
Explanation:M phase where nuclear division occurs by mitosis.
The parent cell divides into two daughter cells.
Also telophase and cytokinesis occurs during M phase.
The picture represents a protein in the stomach being broken down into individual amino acids.
A protein being broken down into individual amino acids.
I CANT GET THE PHOTO
Which is mixed with proteins to break them into amino acids?
villi
enzymes
saliva
fat
Answer:
saliva
Explanation:
it is a chemical that's helps in digestion
Answer:
Enzymes
Explanation:
During respiration, cells break down simple food molecules such as sugar and release the energy they contain.
True or false?
Answer:
During respiration, cells break down simple food molecules such as sugar and release the energy they contain. an energy releasing process that does not require Oxygen. In the mitochondria, the smaller molecules combine with oxygen to produce water and carbon dioxide. This reaction realeases a large amount of energy.
Explanation:
Answer:
i belive The answer is true
What structure in the brain controls the chemical responses that signal the sex hormones to make us either male or female?
a) All of these
b) The pituitary
c) The RAS
d) The adrenals
which of the following is true about the Earth’s layers? A The asthenosphere is the thickest of Earth’s layers. B All of the layers are liquid and extremely hot. C There is little to no pressure on the solid core. D The Earth’s core has two different parts.
Answer:
D
Explanation:
The Earth’s core has two different parts is true about the earth's layer.
What is Earths core?
The extremely hot and dense core of our planet is called the Earth's core. Underneath the chilly, brittle crust and the largely solid mantle is the ball-shaped core.
Earth was a homogeneous ball of hot rock when it first formed roughly 4.5 billion years ago. The ball heated up even more due to radioactive decay and heat left over after planetary formation (the collision, accretion, and compression of space rocks).
After roughly 500 million years, our young planet's temperature reached 1,538° Celsius (2,800° Fahrenheit), the temperature at which iron melts. The iron age refers to this crucial period in Earth's history.
Therefore, The Earth’s core has two different parts is true about the earth's layer.
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Red Is dominant over yellow. If a male purebred red rose(RR) Is crossed with a female hybrid rose (Rr), what percent of
the roses will be red?
100%
75%
25%
50%
Answer: should be 50%
Explanation:
Answer: I think it's 100%
Explanation:
Identify one condition that might cause snowy animals to leave their usual habitat and
move to another area.
Answer:
A Change in climate.
Explanation:
"Snowy" or better yet Arctic animals survive better in colder climates, So if their home gets warmer they will move towards colder weather. But if you want another example they will also leave if there is little to no food.
How is cancer spread through the body? Check all that apply.
through the nervous system
through the blood
through touching organs and tissue
Answer:
2
Explanation:
Answer:
Through the blood
Through organs and tissue
Explanation:
Decomposers build up chemicals in dead plant and animal matter.
Answer:
When plants and animals die, they become food for decomposers like bacteria, fungi and earthworms
Explanation:
Yan lang po ang alam ko
how many monkeys would have to live in a 3/4sq.km. area to have the same population density as the carabao?
Answer: 20 monkeys
Explanation:
Question is lacking a very important detail which is the population density of monkeys in the Carabao.
I found that out to be 26.7 monkeys per sq.km
Population density = Number of monkeys / Area
With the population density known to be 26.7 monkeys per sq.km and the area known to be ³/₄ sq. km, the number of monkeys is;
26.7 = No. of monkeys/ ³/₄
No. of monkeys = 26.7 * ³/₄
No. of monkeys = 20
Presence of light is required for the light independent reactions. true or false
Answer:
false
Explanation:
the light-independent reactions do not use light as a reactant (and as a result can take place at day or night), they require the products of the light-dependent reactions to function
List at least two pieces of data supporting the hypothesis that there is a link between the sickle cell allele and malaria.
Answer:
allele AND MALERIA
Explanation:
allele and maelrai
The two pieces of data that supporting the hypothesis that there is a link between the sickle cell allele and malaria is that increasing sickle-cell allele frequency.
What is sickle cell anemia?Sickle cell anemia has been known as the most common inherited blood disorder in the United States. In the United States, generally, approximately 100,000 people have SCD. SCD occurs generally in about 1 of every 16,300 Hispanic-American births. Approximately 1 in 13 black or the African Americans has the sickle cell trait.
Sickle cell disease (SCD) has affects the millions of the people throughout the world and it has particularly the common among those whose ancestors came from sub-Saharan Africa as well as the Spanish-speaking regions in the Western Hemisphere (South America, the Caribbean, and Central America); Saudi Arabia; India; and Mediterranean countries such as Turkey, Greece, and Italy.
Therefore, The two pieces of data that supporting the hypothesis that there is a link between the sickle cell allele and malaria is that increasing sickle-cell allele frequency.
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Which of the following is NOT one of the 3 major areas of society affected by
science?
A. Labor
B. Communication
C. Health
D. Justice
Answer: D. Justice
Explanation:
Science is a field that deals with facts and information based on research and predictions. Justice is the area that is not affected by science. Thus, option D is correct.
What is the effect of science?Science is involved in many areas of society and has a big impact and influences many elements and components of society. It plays a major role in communication as many inventions and developments in communicating devices are the result of science.
It is primarily concerned with the health and medical field as many scientific inventions and developments are based on experiments and research. it also affects labor as many new technologies and machines have been developed.
Therefore, science does not affect justice.
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how did Luigi Galvani's accomplishments help benefit our world with discoveries about electricity?
Answer:
During a random experiment on November 6, 1787, Galvani discovered that a frog muscle could be made to contract by placing an iron wire to the muscle and a copper wire to the nerve. ... This discovery played a historical role in bioelectricity as it proved that electricity was not direct in its action.
While playing tennis you need to know where your limbs are located so you can move them into the right positions to run or swing your racket. Which of the following senses provides this information?
Answer:
The correct would be - Kinesthesis.
Explanation:
Kinesthesis is the study of the body movement and learning where is your body parts and so can you can move or find the required changes to make to the body and its part. It does not depend on the senses like hearing, vision, or others.
Kinesthesis involved the sensory receptors present in joints, muscles or other body parts involves in making movements and allows to make and understand physical activities. For example, sensing pr knowing where is the body limbs to move to hit or swing the racket or run.
What are the products of photosynthesis
Answer:
Glucose (sugar) and oxygen
What was available to humans to make their tools before metallurgy?
A: Humans used no tools.
B: Humans used their bare hands for tools.
C: Humans used wood, stone, and bones for tools.
D: Humans used natural metals they found on the ground.
Answer:
C
Explanation:
Before the advent of metallurgy, humans used wood, stone, and bones for tools.
What is metallurgy?It is a branch of science that deals with the properties of metals as well as their application in building useful metallic tools.
Metallurgy has helped man to develop several useful tools and equipment which are vital to the existence of man.
Before the advancement of technology, man use improvised tools made from wood, stones, and bones.
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substances produced in a cell and exported outside the cell would pass through the
Answer: cell membrane
Explanation: Substances that were produced inside the cell that have to get out of the cell have to go through the cell membrane, because the cell membrane is the structure of cell.
When small solute particles or liquids are taken into the cell - what is it called?
Answer:
In cellular biology, pinocytosis, otherwise known as fluid endocytosis and bulk-phase pinocytosis, is a mode of endocytosis in which small particles suspended in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in a suspension of the particles within a small vesicle .
Explanation:
Which type of mutation results in a frameshift mutation? Check all that apply.
substitution
insertion
deletion
point mutation
Which type of mutation adds one or more base pairs?
insertion
substitution
deletion
Insertion-deletion type of mutation results in a frameshift mutation changing the amino acid code for protein, hence options A and B are correct.
What is frameshift mutation?A frameshift mutation is produced via insertion and deletion. "indel" mutations, which stand for insertion or deletion mutations, result in frameshift mutations.
The way the DNA is read is altered by these changes. The nucleotides that follow in a DNA sequence can all be affected by a frameshift mutation, making them more likely to have severe effects.
A frameshift mutation is brought on by insertion and deletion, mutations from insertional or deletional mutations result in frameshift mutations.
Therefore, frameshift mutations happen when one or more nucleotides are added or removed, provided that the total number of nucleotides added or subtracted does not exceed three, disrupting the normal sequence of codons, hence options A and B are correct.
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what is known as photosynthesis
Photosynthesis is the process used by plants,Algae and certain bacteria to harness energy from sunlight and turn it into chemical energy.
Describe the time of day that an early explorer might have planned to enter a harbor and when he might have planned to leave for his trip home. Explain the reasoning.
Answer:
I think he would want to arrive during high tide and leave during low tide.
Explanation:
Humans are good at transferring energy from place to place.
Answer:
Yes
Explanation:
Humans are good at it transferring energy from place to place.
How do T-cells work to recognize invading cells or molecules?
Answer:
Antigen-presenting cells show digested antigens to T cells through the MHC on their surface, which allows the T cell to “see” the antigen and recognize it as foreign. The connection between the MHC and the receptor on the T cell is the first signal necessary to activate the T cell to respond to a tumor and destroy it.
Explanation:
Pls help me with this emt so hard and fast to draw and label all parts pls tell me show drawing smart people 100%
Answer:
how
Explanation:
What is distillation?
Answer:
Distillation is the action of purifying a liquid by a process of heating and cooling.
I REALLY NEED HELP ASAP. PLEASE BE SERIOUS AND SO NOT JUST TAKE THE POINTS. I WORKED HARD FOR THEM AND FOR ONCE I HAVE A QUESTION. PLEASR ANSWER!
Answer:
1-pacific plate
2-south America plate
3-nouth America plate
4-eurasian plate
8-juan de fuca plate
11- Caribbean plate
14-philipine plate
Explanation: