A student drops three blocks from the same height and measures the time it takes for the blocks to hit the ground. Each block has a different mass, then the independent variable in the experiment would be the drop height.
What is Gravity?
It can be described as the force that causes a body to draw another body toward its center as a result of its mutual gravitational pull.
A student, following the instructions in the problem, drops three blocks from the same height and timing how long it takes for them to strike the ground. Although there are many variables in the measurement because each block has a distinct mass, the drop height is constant for each block and is therefore regarded as the independent variable.
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hel pleaseeee
heart disease introduction
Heart disease refers to a type of disease that affects the ability of the heart to perform its function.
What is heart disease?The term heart disease refers to a type of disease that affects the ability of the heart to perform its function. There are several kinds of heart disease which are able to affect the basic function of the heart which is to pump blood around the body.
One of the major heart disease is hypertension which could be caused by several factors such as blockage of the blood vessels. Other kinds of heart disease include;
Coronary Artery Disease (CAD)Heart Arrhythmias.Heart Failure.Heart Valve Disease.Pericardial Disease.Cardiomyopathy (Heart Muscle Disease)Congenital Heart Disease.Learn more about heart disease:https://brainly.com/question/816481
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Compare scientific theories and scientific laws by writing each characteristic in the chart
below in the correct location on the Venn diagram.
Answer:
Law:
- based on empirical evidence
- describes a pattern in nature
- ex natural selection
- rarely changes
Theory:
-explanation of many related
-gravitational attraction
middle: - changes w new observations
-
Explanation:
Some species of hares are brown most of the year, but change color to white in the winter. This allows them to
blend in through the seasons.
Where are these organisms adapted to live?
A deciduous forests
B desert
C tropical rain forests
D savanna
Explanation:
c is the answer of the question.
Some species of hares are brown most of the year, but change color to white in the winter. This allows them to
blend in through the seasons.
Hares that are brown in summer turn white in winter . This allows them to blend in Desert seasons (both hot and cold) . Therefore, option ( B ) is correct.
What is adaptation ?Adaptation is defined as "the physical or behavioral characteristic of an organism that helps an organism to survive better in the surrounding environment." All living things have become adapted to the habitat in which they have chosen to make their home. This is due to the fact that they possess unique characteristics that aid in their ability to adapt.
There is a fascinating adaptation that snowshoe hares have developed that helps them avoid being eaten by predators. Their fur can take on a variety of colors throughout the year depending on the weather. Snowshoe hares have white fur in the winter, which allows them to blend in better with the snowy environment. The snowshoe hare's coat takes on a rusty-brown color during the spring and summer months as the seasons change.
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A cell has few proteins in it; the fluid it is in has a high density of proteins. What is
necessary for the cell to move proteins outside of itself?
passive transport
active transport
diffusion
osmosis
Answer:
c
Explanation:
...
13. Explain the difference between a light microscope and an electron microscope.
Live things, dead things and more magnification
how is the nucleus of a helium atom different from the nucleus of a lithium atom?
Answer:
A helium atom has a heavier nucleus and two electrons, A lithium atom has a still heavier nucleus and three electrons.
Explanation:
the biotic components of the environment of a pronghorn and a starfish respectively are
Predators, competition, and parasites are the respective biotic components of a pronghorn and a starfish.
What do you mean by biotic components?Biologic components are living things that influence other organisms in an environment either directly or indirectly. Take microorganisms, plants, and animals along with the garbage they produce as an example. All chemical and physical components of an ecosystem are considered to be non-living, or abiotic, elements.
Briefing:The ecosystem is made up of biotic components, which are living things that have an impact on other living things. An animal that preys on or consumes other creatures is a predator. Living things known as parasites rely on their hosts for nutrition and support.
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4. Describe how scientists study subjects in which experiments are not
possible.
Forensic toxicologist John Trestrail thought there was something curious about the Crippen case. He decided to
further investigate. What was MOST likely his most pressing question about the case?
Why use poison then dismember the body?
Why would a husband kill his loving wife?
What happened to Crippen's secretary?
Did Dr. Crippen have a motive to kill Cora?
The use of poison and then dismember the body to Crippens secretary.
The CSI effect was first described in the media as a phenomenon resulting from watching forensic and crime programs on television. This effect causes jurors to have unrealistic expectations of forensics during criminal trials, influencing juror decisions during the conviction or acquittal process. CSI viewers rated the hair evidence as unreliable. This is a statistically significant difference compared to non-viewers.
Schweitzer and Saks' findings suggest that consideration of CSI may influence jurors' attitudes to forensic evidence. The first police crime laboratory was founded in Lyon, France in 1910 by Edmond Locard. According to Locard's Barter Principle, it is impossible for a criminal to escape from a crime scene without leaving a trace. Each floor has its own property that serves as a signature feature.
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A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available energy but few excess calories. The student claims that snack #4 would be best choice. Which reasoning statement supports this claim?
1
2
3
4
Answer
A
Snack # 4 has less carbohydrates than snack # 1 and fewer calories than #3 so snack #4 is the best choice.
B
Snack #4 has more carbohydrates than snacks #1 & 3 and fewer calories than snack #2, so snack #4 is the best choice.
C
Snack #1 does not have any carbohydrates and very few calories, so snack #4 is the best choice.
D
Snack #3 has more calories and carbohydrates than # 4, so #4 is the best choice.
Answer: B
i think that's correct bc u want carbs
20 Points! Which molecules are considered organic?
1. those containing phosphorus
2. those containing carbon
3. all natural
4. those containing hydrogen
Answer:
carbon or carbon-hydrogene.
how do you think DNA shows organization? biology
yes
Explanation:
DNA (deoxyribonucleic acid) is the biomolecule that contains all the information necessary to generate an organism and maintain its functioning.
have a good day:)

Which of the following is an example of a necessary chemical in a living organism?
Oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus are necessary chemicals in a living organism.
Which of the following is an example of a necessary chemical in a living organism?The chemical elements which are present in our atmosphere and plays a very important role for our living is oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus. These are the chemical elements which makes the life possible on the surface of earth. These makes the 99% of the life on earth. The four most abundant elements which are found in our body are hydrogen, oxygen, carbon and nitrogen. These elements form all parts of our body because these elements attached with one another forming parts of our body.
So we can conclude that Oxygen, carbon, hydrogen, nitrogen, sulfur, and phosphorus are necessary chemicals in a living organism.
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Amylase, albumin, hemoglobin, keratin, and collagen are all
O carbohydrates
Onucleic acids
Oproteins
Olipids
Amylase, albumin, hemoglobin, keratin, and collagen are all option(c) i.e, proteins.
An incredibly complex, naturally occurring molecule known as a protein is made up of amino acid residues connected by peptide bonds. All living things contain proteins, which are the building blocks of numerous vital biological substances like enzymes, hormones, and antibodies.
The three basic classes of proteins—globular, fibrous, and membrane—that correspond to typical tertiary structures can be arbitrarily grouped into three groups. Plant-based foods (fruits, vegetables, grains, nuts, and seeds) frequently lack one or more essential amino acids, but animal-based foods (meat, chicken, fish, eggs, and dairy products) are frequently good sources of complete protein.
The body uses protein for a variety of purposes. It promotes metabolic reactions, supports tissue growth and repair, and synchronizes biological processes. Proteins give your body a structural foundation while also ensuring optimal pH and fluid balance.
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Mendel conducted experiments with pea plants in order to:
• A. determine how to
grow the best
pea plants.
B. determine how traits are
created in organisms.
C. determine how traits
are passed to offspring.
O D. determine how to produce more peas for food.
Mendel conducted experiments with pea plants to determine how traits are passed to offspring.
Gregor Mendel describes his experiments with peas showing that heredity is transmitted in discrete units.
From his work on pea plants, he discovered the fundamental laws of inheritance and he deduced that genes come in pairs and are inherited as distinct units, one from each parent.
From the earliest time, people noticed the resemblance between parents and offspring, among animals and plants as well as in human families.
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The number of significant figures in 200.000 is ?
The number of significant figures in 200.000 is six.
Significant figures are the number of digits that add to the correctness of a value, frequently a measurement. The first non-zero digit is where we start counting significant figures. Any two non-zero digits that are separated by a zero are important. For instance, the number 108.0097 has seven significant digits. Every zero that is both to the right and left of a non-zero digit and the decimal point is never meaningful. For instance, the number 0.00798 had three significant digits.
The correctness and precision of numbers are the focus of significant figures, also known as significant digits, which are crucial components of scientific and mathematical calculations. Significant numbers play a crucial role when estimating the degree of uncertainty in the outcome.
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It needs two answers please help!!
A scientist observed a plant growing near a sunny window. Over several
weeks, the leaves of the plant grew larger and began to face the light from the
window. Which two characteristics of life did the scientist observe?
A. Response to stimuli
B. Evolution
C. Reproduction
D. Growth and development
Answer:response to stimuli, and Growth and development.
Explanation:trust
Consider the questions “What color is your friend’s car?” And “How many legs do dogs have?” To answer these questions, would you use the scientific method, or would you rely on observation? Why?
To answer the question of “What color is your friend’s car?”, an individual would rely on observation in this type of scenario.
What is Scientific method?This is used in the field of science to acquire through the use of various techniques such as the following which are shown below:
HypothesisExperimentConclusion etc.Observation on the other hand is the process which involves the monitoring of something so as to get the required information and employs the use of our sense organs such as the eyes, ears etc. This organs are involves in the relay of the impulses to the brain for processing.
Questions such as “What color is your friend’s car?” And “How many legs do dogs have?” can be answered by using our sense of sight to answer them and they don't require scientific methods which is why it was chosen as the correct choice.
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what is water called that has become a solid
Answer:
hello there the answer is ice
Which of the following is the best definition of bias?
Answer:
an inclination of temperament or outlook
Explanation:
The energy derived from_____
is used to produce ATP
Answer:
the breakdown of foodHope this helpsace that workGood luck ✅Answer:
Glucose.
Explanation:
Hope this helps!
Describe the role of nitrogen fixation in the tissue formation of producer organisms
Microorganisms that fix nitrogen in nitrogen fixation can obtain assimilative [tex]N[/tex] for plants in a way that crops cannot. It is absorbed by bacteria from the atmosphere as a gas and released to the soil, mostly as ammonia.
The purpose of nitrogen-fixing bacteria is to provide plants with a crucial nutrient that they are unable to receive naturally from the air. The process by which nitrogen gas ([tex]N_{2}[/tex]) from the environment is integrated into the tissue of specific plants is known as biological nitrogen fixation (BNF). Using soil microorganisms as a source of [tex]N[/tex], only a small subset of plants can do so. Nitrogen fixers, nitrifying bacteria, and denitrifying bacteria, including Rhizobium, Nitrosomonas, Nitrobacter, Pseudomonas, and Thiobacillus, are among the organisms that participate in the nitrogen cycle. The majority of nitrogen fixation is done spontaneously by bacteria in the soil. In the soil, nitrogen is fixed and exchanged in several forms. Some bacteria adhere to root growth and form symbiotic relationships with plants that are advantageous to both the crop and the bacterium.
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Carbon has 8 electrons in its outer shell and is a very stable atom
Question 1 options:
Unomers
Monomers
Dimers
Someone pls help
Answer: Monomers
Explanation: I took the quiz
A carbon that has 8 electrons in its outer shell and is a very stable atom is a dimmer.
What is carbon?Carbon is an atom that is found in the fourteenth group of the periodic table. There are two shells in a carbon atom. The outermost shell of the carbon atom contains four electrons.
We know that a bond is formed when two atoms are joined together. If we have known that each of the carbon atoms have four carbon electrons then we then are told that there are eight electrons in the outermost shell of the atom under study here.
It is then clear that a carbon that has 8 electrons in its outer shell and is a very stable atom is a dimmer.
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Many surface military ships use sonar as one method for detecting submarines. How would the temperature, density, and salinity of water affect the usefulness of sonar,and why?
Answer: Density
Explanation:
Actually those three things are really just one thing. Density.
Temperature affects density.
Salinity affects density.
Density affects the speed of sound through water.
Alterations to the speed of sound through water alter the path of soundwaves propagating through the water.
Sooo…
With increasing depth, comes decreasing temps as water gets colder the deeper you go. Cold water is denser than warm. Sound waves angled down into the depths eventually become curved back towards the surface.
This creates a rather interesting effect. While a sonar could normally detect a target at a certain range or less, these “Convergence Zones” where sonar waves are reflected back to the surface create annular rings of detection beyond the normal detection range.
This bending of soundwaves can also create “dead zone” where the soud waves just do not reach from a particular location. creating sound shadows where the sonar does not see.
In many locations in deep water, there can be a sudden shift in the rate of temperature change, usually located between the upper part of the ocean where temps can vary with seasons and the lower Isothermic layer where the temps change very little. This creates a layer called the thermocline Sonar detection across the layer Where the sonar and target lay on opposite sides, above and below the layer…is reduced compared to sonar detection where both sonar and target are on the same side of a layer.
So the temperature of water, which varies widely with depth, can cause the ray path of soundwaves to bend and reflect and even converge, creating both increased areas of detection as well as blind zones of reduced detection.
Salinity also affects density, With salt water being denser than Freshwater.
So areas wher there is a high degree of turbidity and mixing of these two types of water, like near the mouth of a large volume discharge of water, can create very unpredictable sound channels that are constantly changing. this make sonar performance prediction very difficult and affects the Sonar’s ability to detect targets.
5) FORENSICS REVIEW Physical or Biological?
a.Fibers from a jacket
b. Skin cells under fingernails c.Fingerprints
d. Pollen transfer from one location to another
6) FORENSICS REVIEW Class or Individual?
a.Tire Marks
b. DNA
c. Fingerprints
d. Blood type
Answer:
A,B
Explanation:
2. Examine the drawing of the cell membrane below. It consists of two layers of
phospholipid molecules with protein molecules providing pathways in and out of
the cell.
fluid inside cell
protein molecules
DAAROO
fluid outside cell
channel
What is the function(s) of the cell membrane? Select all that apply. *
produce energy (ATP) for the cell
provide a protective barrier between the inside of the cell and the outside
environment
contain the genetic material (DNA)
make proteins for the cell
control what comes in and out of the cell
package materials
double layer
of fat
(phospholipid)
molecules
1 point
Answer:
provide a protective barrier between the inside of the cell and the outside
environment
Explanation:
Hope It Helps
Sorry If I'm Wrong
How does a human body get energy from the food molecules
Explanation:
When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose. The stomach and small intestines absorb the glucose and then release it into the bloodstream.
1 Answer:
HACCP is a program designed to create awareness of potential points
of contamination in a food-processing facility.
a. true
b. false
2 Answer:
A bacteriostatic agent uses static electricity to remove bacteria
from a surface.
a. true
b. false
3 Answer:
The three major sources of contamination in a food processing plant
are people, processing equipment, and the plant environment.
a. true
b. false
4 Answer:
Water hardness is a measure of the presence of substances in water
that form insoluble precipitates with soap.
a. true
b. false
5 Answer:
The floor of a food processing facility should have an unfinished
concrete surface for easy cleaning.
a. true
b. false
6 Answer:
A _____ hazard is generally a microbe such as a bacterium, virus,
or parasite.
a. biological c. deleterious
b. physical d. chemical
7 Answer:
In a food processing plant, _____ are probably the biggest source
of contamination.
a. employees' hands
b. food preparation surfaces
c. tools and equipment used to handle food
d. employees' feet and shoes
8 Answer:
Procedures developed over time to ensure the production of safe and
wholesome food and to provide a safe working environment are called
_____ practices.
a. sanitization c. good manufacturing
b. post-production d. facility management
9 Answer:
A food-preparation surface that will not rust or deteriorate as a
result of continuous applications of water is said to be _____ resistant.
a. aquatically c. continually
b. corrosion d. sanitizer
10 Answer:
The maintenance of overall cleanliness and hygiene in the food
processing environment is known as food _____.
a. safety c. galvanizing
b. sanitation d. HACCP
Answer:
oh my goodness oh my dam oh my goodness we goin ham
Explanation:
lucia is walking barefoot in her yard. She accidentally steps on a nail. how will her nervous system work to generate a reaction ? arrange the events chronologically
Answer: her nervous system will breakdown and go into pain
Explanation:
no answer choices
I need help on this it's due tomorrow