Michelle and George are studying the forces and motion of a 0.8-kg low friction cart on a horizontal table. They use a spring scale to exert different amounts of horizontal pulling force on the cart and measure the acceleration of the cart for each pulling force. The measurements of each set of pulling force and acceleration are displayed in the table below. If friction is much weaker than the pulling force, which of the following is the best fit for the missing pulling force in the table?

Answers

Answer 1
Table 1: The horizontal pulling forces (F) and resulting acceleration (a) for the cart.



The cart experiences no motion when there is 0.1 N of horizontal force, so F=0 in this case. When one uses Newton's Second Law to find the acceleration caused by each force, it becomes clear that every row in the chart represents a horizontal force of approximately F=20 N. The best fit for the missing value is F=-30N.

Related Questions

How are the amounts of carbon dioxide and oxygen inhaled by lungs different from the amounts exhaled? How do cellular respiration and the law of conservation of mass relate to this?
I NEED HELP!!

Answers

Answer:

1. Gas exchange takes place by diffusion in the alveoli within the lungs. As a result the composition of inhaled and exhaled air is different.

...

Inhaled and exhaled air.

Gas % in inhaled air % in exhaled air

Oxygen 21 16

Carbon dioxide 0.04 4

Nitrogen 79 79

NB These figures are approximate.  

2. The amount of carbon-dioxide atoms released by respiration are exactly equal to the atoms of these materials contained in the oxygen and carbon converted. In this way respiration has conserved the mass or material and in this way followed the law of conservation of mass.

Explanation:

What is Cellular Respiration?

Cellular Respiration is the process in which the cells of living things break down the organic compound glucose with oxygen to produce carbon dioxide and water. The overall chemical equation for cellular respiration is:

C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (stored in ATP)

Cellular respiration takes place in the cells of all organisms. It occurs in autotrophs such as plants as well as heterotrophs such as animals.

Q: How is cellular respiration related to breathing?

A: Breathing consists of inhaling and exhaling, and its purpose is to move gases into and out of the body. Oxygen needed for cellular respiration is brought into the body with each inhalation. Carbon dioxide and water vapor produced by cellular respiration are released from the body with each exhalation.

Energy Changes in Cellular Respiration

The reactions of cellular respiration are catabolic reactions. In catabolic reactions, bonds are broken in larger molecules and energy is released. In cellular respiration, bonds are broken in glucose, and this releases the chemical energy that was stored in the glucose bonds. Some of this energy is converted to heat. The rest of the energy is used to form many small molecules of a compound called adenosine triphosphate, or ATP. ATP molecules contain just the right amount of stored chemical energy to power biochemical reactions inside cells.

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plants use the ____________ to make organic molecules.

Answers

The answer is light-independent reactions.

which statement best explains the orientation of the phospholipid molecules in this model?

Answers

Answer:

B.) The hydrophilic phosphate groups of the phospholipid molecules are attracted to the aqueous internal and external environments.

Explanation:

Hope This Helps! :)

Marco has experienced extreme fatigue (tiredness) lately. He eats three balanced meals each day and exercises 2-3 times per week on his Peloton bike. He gets 7-8 hours of sleep each night, but just can’t seem to stay awake during the day. Which organelle is most likely causing Marco’s problems?

Answers

Given the symptoms shown by Marcos, we can infer that the organelle that may be causing his problems is the mitochondria.

The mitochondria are one of the most famous and important organelle within a cell. Found in most eukaryotic cells, they are the organelle responsible for most of the energy production of a cell, and throughout the cells of the body, they become responsible for the energy production of the organism. This is the origin of its famous "Powerhouse of the cell" title. Mitochondria produce energy in the form of ATP.

ATP is a molecular compound necessary for most of the reactions that take place in a cell. It is so common as a requirement for any cellular activity that ATP is known as the "molecular currency". Marcos is said to be experiencing chronic fatigue, which is a symptom of mitochondrial disease. When the mitochondria of an organism's cells are not functioning as they should be, the cells do not have the energy needed to perform basic functions.

In reaction to this, the body sends signals to the brain to go to sleep, which minimizes energy consumption by slowing down the metabolic processes which require ATP and thus gives the body time to produce more energy. For these reasons, we can conclude that the fatigue and problems Marcos is experiencing are due to mitochondrial disease.

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Where are the tube like structures that connect fungi cells?

Answers

Answer:

What are Hyphae

Explanation:

Hyphae are long tubular structures resembling garden hoses. ... Hyphae perform a variety of functions in fungi. They contain the cytoplasm or cell sap, including the nuclei containing genetic material. Hyphae absorb nutrients from the environment and transport them to other parts of the thallus (fungus body).

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Miss Hawaii

which unit of geologic time began 65.5 million years ago and continues to the present?

Answers

The Cenozoic Era

I hope that helped :)

What is an argument in favor of using embryonic stem cells over adult stem cells?

A. Embryonic stem cells can differentiate into many more types of cells.

B. Embryonic stem cells are never really living.

C. Adult stem cells cannot be cultured.

D. Adult stem cells reproduce much faster than embryonic stem cells.

Answers

Answer:A

Explanation:

The ES cells is pluripotent, and the adult stem cell is unipotent.

the connective tissue covering around a fascicle is the

Answers

Answer:

a layer of connective tissue called the perimysium.

Explanation:

Which of the following is the central issue underlying a problem that needs to be addressed

Answers

Answer:

you didnt list the options

Explanation:

????????????????????

Answers

Answer:

That would be the sun, because of its gravitational pull its what pulled the other planets closer, then making our solar system. However, the sun was formed after the solar nebula, but thats not an option, so the next thing made was the sun. I hope this helps you! :D

Answer:

Answer is the sun

Explanation:

hope it helps u❤

watson and crick were the first to suggest that dna is

Answers

Answer:

they suggested that DNA could make exact copies of itself

Explanation:

The two had shown that in DNA, form is function: the double-stranded molecule could both produce exact copies of itself and carry genetic instructions.Watson and Crick developed their ideas about genetic replication in a second article in Nature.

the thin strand of pia mater that helps to anchor the spinal cord to the coccyx is the

Answers

Answer:

filum terminale

The filum terminale is a thin strand of pia mater that helps anchor the conus medullaris to the coccyx

8. What muscle is immediately medial to the brachioradialis?

Answers

The brachioradialis’ proximal part is medically covered by the distal part of the brachialis muscle, while the tendon of biceps brachii passes deep to it, on it’s way towards the radial tuberosity.

describe a mature community. how does a mature community develop?

DUE IN 30 MINUTES HELP

Answers

Answer: simply has organisms*living things) that are well adapted to live together in the same area over time.

Can someone pls help me with this 2 questions!!

Answers

Answer:

water contracts and ice sinks

Answer:

For #2, water expands when it freezes, therefore it floats!

Explanation:

Water first condenses when it freezes until it reaches about 4 degrees Celsius, where it then slowly expands by about 9%. It also floats! You can observe this yourself by placing ice into a glass full of water.

Ice floats because it is less dense than the water below.

when did anton van leeuwenhoek invent the microscope

Answers

Answer:

1666

Explanation:

What is so interesting about the hydrothermal vent system?

Answers

Answer:

They support unique ecosystems and their communities of organisms in the deep ocean. They help regulate ocean chemistry and circulation. They also provide a laboratory in which scientists can study changes to the ocean and how life on Earth could have begun.

Explanation: hey are old, preserve a lot of old organisms, and help the ecosystem

what happens when layers of rock with different densities collide?​

Answers

When plates of differing densities collide, the plate that is more dense goes under the less dense plate. Trenches and volcanic mountains form.

2. What muscle (with two heads) allows you to flex your arm?

Answers

Answer:

Answer is Biceps brachi.

Answer:

Biceps Brachii

Explanation:

how does one chromatid compare to its sister chromatid?

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Answer:

One chromatid compares to its sister chromatid because when a chromatid is replicated, a sister chromatid is formed. The sister chromatid will be a genetically identical copy to the chromatid because the cell being replicated will also be genetically identical.

Explain why roots are not needed in marine algae?

Answers

Because they lack vascular system !

Sulfur dioxide _____.
A.) creates a reddish-brown haze in the sky
B.) is a secondary air pollutant
C.) has an irritating odor and is colorless
D.) is relatively harmless to the environment
Answer is C

Answers

Answer:

C.) has an irritating odor and is colorless

Explanation:

Sulfur dioxide is a chemical compound that's very toxic, non-flammable, colorless, and has a pungent odor. It's chemical formula is [tex]SO_2[/tex].

..If two solutions are isotonic to each other, then...

Answers

Answer:

They have the same concentration.

Explanation:

Isotonic, by definition, means that the two solutions are of equal concentration

which statement concerning ATP and activity within the cell is correct?

Answers

ATP stands for Adenosine Di Phosphate.ATP is known as power currency of cell It's found in MitochondriaMitochondria is known as power house of cell.

Which of the following statements is true?

Answers

The answer is c.
RNA is single stranded


This is the answer because DNA is double stranded

DNA does not contain uracil

RNA does not contain deoxyribose sugar
hope this helps!!

Plz if I am right put a brainliest

Answer:

The First one, second and forth are false

and the 3 one is true

Explanation:

The DNA is doble stranded in a double helix structure. There are 5 nucleobases (adenine (A), cytosine (C), guanine (G), thymine (T), and uracil(U)), only the first 4 are present in the DNA whilist the U substitutes the T in RNA.

The DNA has deoxyribose sugar while RNA has ribose sugar, that's what gives the doble stranded and single stranded form respectively.

A cooler area appearing from time to time on the sun's surface, appearing dark by contrast with its surroundings.​

Answers

Answer:

Are you talking about a sunspot?

Explanation:

males are more often affected by x-linked traits than are females because ________.

Answers

Answer:

A male with a mutation in a gene on the X chromosome is typically affected with the condition. Because females have two copies of the X chromosome and males have only one X chromosome, X-linked recessive diseases are more common among males than females.

Explanation:

Hope this helps you a lot!

what is the organ responsible for the production of bile

Answers

Answer:

Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.

Explanation:

Answer:

the organ producing bile is pancreas

how to find percentage change in mass
and how to find change in mass if you're only given the mass before and mass after? ​

Answers

Answer:

Mass Difference= Final Mass- Initial Mass

To find the “Percent Change in Mass,” divide the “Mass Difference” by the “Initial Mass.”

Explanation:

Why is sustainable use of natural resources important?

Answers

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The use of resources should be sustainable because many non renewable resources like coal and petroleum can be exhausted if they are over exploited.

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