a 50 kg skater pushed by a friend accelerates 5 m/s^2. how much net force did the friend apply?

Answers

Answer 1

Answer:

250

Explanation:


Related Questions

WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!
Which of the following DOES NOT add carbon dioxide to the atmosphere.
Group of answer choices

planting trees

burning wood

cooking with gas

riding in a bus

Answers

planting trees

Explanation:

its just planting not respiring

explain how the equations for photosynthesis and cellular respiration compare.

Answers

Answer:

In Photosynthesis, carbon dioxide and water is yielded to glucose and oxygen. In respiration, glucose and oxygen is yielded to carbon dioxide and water.  C6H12O6 (glucose) + O2(oxygen) → CO2(Carbon Dioxide) + H2O(water) + ATP energy.

Explanation:

The equations of photosynthesis and cellular respiration compare in such a way that one seems like the opposite of the other.

In photosynthesis, inorganic materials such as water and carbon dioxide are used to generate carbohydrates according to the following equation:

[tex]6CO_2 + 6H_2O + energy ---> C_6H_1_2O_6 + 6O_2[/tex]

In cellular respiration, carbohydrates are broken down to generate energy with water and carbon dioxide being by-products according to the equation below:

[tex]C_6H_1_2O_6 + 6O_2 ---> 6CO_2 + 6H_2O + energy[/tex]

Thus, the two processes are chemical opposite of each other. The starting materials of photosynthesis are the products of cellular respiration and vice versa.

More on photosynthesis and respiration can be found here: https://brainly.com/question/1388366

In an experiment, the variables that are kept the same between the experimental group and the control group are called ________.

A) Outliers

B) Constants

C) Dependent Variables

D) Independent Variables

Answers

Answer:

B. Constants

Explanation:

Constants are the factors that stay the same throughout the entire experiment no matter which group. The definition of a constant is "a situation or state of affairs that does not change." this furthers the point that constant is the correct answer because they don't change in the experiment.

B) I believe? Normally I'd say controlled variable

how do atoms become charged and how do they balance those charges

Answers

Answer:

Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations. Most metals become cations when they make ionic compounds.

Explanation:

1. Question: What effect does the amount of water have on plant growth?
Hypothesis:
If, then, because

Answers

Answer:

If a plant's soil has too much water, the roots can rot, and the plant can't get enough oxygen from the soil. If there is not enough water for a plant, the nutrients it needs cannot travel through the plant. A plant cannot grow if it doesn't have healthy roots, so the proper balance of water is key when growing plants

Explanation:

The hypothesis of this scientific question will state: IF the amount of water increases, THEN the plant growth will also increase.

WHAT IS HYPOTHESIS:

Hypothesis is a testable explanation of a phenomena. It is used in the scientific method to provide a possible answer to a scientific question.

The hypothesis, which is subjected to testing via experimentation, shows the relationship between the independent variable (cause) and dependent variable (effect).

The question of this experiment is as follows: 'What effect does the amount of water have on plant growth'. This means that the independent variable is the amount of water and the dependent variable is the measurable growth of plant.

Therefore, the hypothesis will read as follows: IF the amount of water increases, THEN the plant growth will also increase.

Learn more: https://brainly.com/question/3853376?referrer=searchResults

Why do you think we see phases of the Moon?

Answers

Answer:

Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness. The phases we see result from the angle the Moon makes with the Sun as viewed from Earth. ... We only see the Moon because sunlight reflects back to us from its surface.

Explanation:

The chemical energy stored in ATP during photosynthesis is released during the dark phase to _____.

produce O 2
produce CO 2
release energy for the "light."
produce carbohydrate from CO 2

Answers

answer-

produce carbohydrate from co2

Which two methods do scientists use to gather information ??

Answers

Answer: Experiments and observations

Explanation:

Hope this helps

Loss of habitat leads to a loss of generalist species, followed by a loss
of generalist species?
True or False?

Answers

Answer:

It is true

Explanation:

for example the pond is dry .where will the animals that live in that pond stay

Answer:

Explanation:

this seems like a good answer to me

You wan to study the effect of different types of water on the growth of plants you choose the same type of plants. All plants are planted in the same type soil, placed in the same location, exposed to the same room temperature. You water each plant with one of the four different types of water (salt water, regular water, sugar water and distilled water.) after a two-week period, the height of the plants is measured. What is the manipulated, responding, controlled variable

Answers

Answer:

The correct answer is -

The manipulated - type of water

Responding - the height of plants

Controlled variable- regular water

Explanation:

The manipulated or independent variable is in scientific research is a variable that is changed or manipulated to see the response of the responding variable or dependent variable.

In this case type of water, plants get, is manipulated as a different type of water is provided to different plants. So variable that is measured or showing response to the manipulated variable is, is responding variable that is the height of the plants.  

The controlled variable is a variable that is set to see or compare the difference in normal condition and manipulated conditions that is regular water here in this case.

some (blank) transport materials into and out of the cell.
A-proteins
B-carbohydrates
C-lipids
D-nucleic acid​

Answers

the answer is c, lipids, :)

Answer:

c lipids

Explanation:

construct a dialogue between your friend about the online class​

Answers

do you like online?
no

Answer:

Them: Do you like online school?

Me: Yes its kinda fun.

Them: why?

Me: Because i can watch anime all day without them knowing

Why is the law of gravity an example of a universal law?


A) Gravity exists for masses in a closed system only.


B) Gravity exists between any two masses.


C) Gravity exists between small masses in an open system only.


D) Gravity exists only on the earth and the moon.

Answers

Answer:

B because when you have gravity and earth it pushes down on the earth!

Explanation:

Answer B

Explanation

Which part of the diagram illustrates a protein?
1. D
2. А
3. В
4. С

Answers

Answer:

A

Explanation:

C and D are wrong and I got it right

In the given image labeling A is representing protein. The correct option is 2.

What is protein?

Protein is an essential component of a healthy diet. Proteins are composed of chemical 'construction blocks' known as amino acids.

Amino acids are used by the body to build as well as repair muscles and bones, in addition to produce hormones and enzymes. They can also be employed as a source of energy.

Protein-rich foods involve meat, fish, livestock, eggs, lentils, and soy products such as tofu or soy products.

Individuals can also choose from this list of delicious high protein foods to ensure that individuals meet their requirements at each meal.

In the given image,

A is protein.B is amino acids.C is amine group.D is side chain.

Thus, the correct option is 2.

For more details regarding protein, visit:

https://brainly.com/question/17095120

#SPJ2

What kind of waves can travel through both matter and empty spcace

Answers

Answer:

An electromagnetic wave

Explanation:

An electromagnetic wave is a transverse wave that can travel across space as well as through matter. When it travels through space, it doesn't lose energy to a medium as a mechanical wave does.

Answer:

EM (electromagnetic) Waves

Explanation:

Light Waves (AKA EM waves) can travel through both matter and empty space. Light waves transmit energy by compressing the particles in mediums. Light waves can travel with and without mediums.

*light waves are the same as electromagnetic waves, they are the same thing*

how do you expect the period of a planet to change as its average distance from the sun increases?

Answers

Answer:

The closer a planet is to the sun, the stronger the sun's gravitational pull on it, and the faster the planet moves.

Different microscopic organisms cause different diseases. When a dangerous microscopic organism is transferred from one person to many people, the disease it carries will spread. Why is this considered a theory instead of a hypothesis or a law? It is a statement of fact about how nature works instead of an explanation. It provides an explanation for many observations and accepted hypotheses. It describes how to test a possible explanation of one specific relationship. It has not changed over time even though new technology has been developed.

Answers

Answer:

The correct answer is - it provides an explanation for many observations and accepted hypotheses.

Explanation:

The theory is well tested or substantiated explanation for the observation of the natural phenomenon, that included or incorporated various laws, hypothesis, or facts.

It is not just a possible explanation but a well-tested and proven explanation with the help of scientific experiments in a scientific method.

Thus, the correct answer is -  it provides an explanation for many observations and accepted hypotheses.

Answer:

Explanation:

the answer is B. for a short answer

Which statement about natural selection is true?

Answers

I really think its D

When a flu virus enters the body, the immune system creates antibodies made of polypeptide chains to fight the virus. The specific shape of the protein allows it to bind to the virus and deactivate it. How does the antibody's primary protein structure create the specific shape to bind to flu viruses?

Answers

Answer and explanation:

Antibodies are structures made of four polypeptides, two light (L) chains and two heavy (H) chains that join together and form a molecule shaped like a "Y". This structure is possible thanks to the disulfide bonds that bind light chains and heavy chains together. While the stem of the Y is constant and doesn't change ("constant region"), the tips of the Y, composed of 110-130 amino acids and called "the variable region", vary greatly among the different antibodies and are responsible for the high specificity of these molecules.

This is why we could say that the primary structure of this protein is given by disulfide bridges that twist the antibody and allow it to bind to a protein from the flu virus.

Arieanna is a crime scene investigator for the St. Louis MPD Crime Lab. Whenever bodily fluids, such as blood, are left
at a crime scene, her job is to take a sample back to her lab and test the DNA for matches. Which type of
macromolecule is she testing?
-)))
A)
Proteins
B)
Carbohydrates
Lipids
D)
Nucleic Acids

Answers

B) carbohydrates not going to be d)

1. In the water cycle, matter does not move in any specific direction during

Answers

Answer:

Precipitation

Explanation:

Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth.

How does a decrease/decline in a top predator impact biodiversity in an ecosystem?

Answers

Answer:

The most obvious result of the removal of the top predators in an ecosystem is a population explosion in the prey species. ... When prey becomes more scarce, the predator population declines until prey is again more abundant. Therefore, the two balance each other. When the predators are removed, prey populations explode.

i will give you 10 points if you answer this question!which major ecosystem of the United States is represented by the area shown in red?

O Alpine
OTundra
OGrassland
O Deciduous forest​

Answers

i’m almost 90% positive that it’s tundra because it is a very cold place

Answer:

b) Tundra

Explanation:

Tundra is the major ecosystem of the United States represented by the area shown in red of Alaska. Because, they are very cold and snow fall regions. Hence, option (b) is the correct answer.

Codominance Problem:

In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as terminate (black and white spotted).

A black chicken and a white chicken mated. What is the probability the offspring will be terminate (black and white spotted) chickens?

Answers

Answer:

25% black 50% spotted 25% white

Explanation:

Please help! Thank you!

Answers

Answer:

organ

Explanation:

organ might be the answer

it’s organ i think ! :)

What is the letters of the complimentary base pairs to convert this DNA strand in to an RNA strand: GCTGCA

Answers

Answer: CGACGU

Explanation: Remember the base pairing rules: cytosine with guanine and adenine with uracil (in the absence of thymine, which mRNA does not have). To compliment the given strand, you'd have to choose the base that would pair with each individual nucleotide.

Hope this helps,

Lacia

what is the role of chloroplasts in photosynthesis​

Answers

Answer:

Explanation:

The primary function of photosynthesis is to convert solar energy into chemical energy and then store that chemical energy for future use.

Which statement is true?

Answers

Answer:

both a and b are correct

Explanation:

opposites attract

Answer: D) none of the above are true.

Explanation: opposites attract, meaning both A and B are incorrect. Positively charged objects attract negatively charged objects and vice versa.

Students investigate how soil pH affects the height of tomato plants. Each of six tomato plants receives the same amount of

light each day and is planted in the same size pot and given the same amount of water. Each plant is planted in soil with a

different pH What is the dependent variable in the investigation?

Сь

Ос

Od

The size of the pot in which the plants are grown

The pH of the soil in which the plants are grown

The amount of water given to the tomato plants

The height to which to tomato plants grow

Answers

Answer:

The height to which to tomato plants grow

Explanation:

In an experiment, the dependent variable is the variable that the experimenter measures. It is the variable that responds to changes made to the independent/manipulable variable.

According to this question, students investigate how soil pH affects the height of tomato plants. The different pH each plant receives is the independent variable while the HEIGHT OF THE PLANTS that responds to the soil pH or that is measured by the students is the DEPENDENT VARIABLE.

Which statement is true of tropical rainforests?

Answers

Answer:

D

Explanation:

A rainforest is a forest that receives heavy rainfall. The most notable rainforests are in the tropics or subtropics. They have extraordinary biodiversity.

The biggest rainforest is the Amazon rainforest and is considered to be the lungs of Earth due to the amount of oxygen it supplies.

Answer:

D..................................

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