A teacher pushed a 98 newton desk across a floor for a distance of 5 meters in 4 seconds what was his power

Answers

Answer 1
W=98(5)cos(0)
=490J
P=W/t
=490/4
=122.5W

Related Questions

Which shows that the results of an experiment are reliable?
A. The experiment creates ideas for new experiments.
B. The experiment can be repeated with the same results.
C. The experiment uses a very simple procedure.
D. The experiment supports the hypothesis.

Answers

The answer should be D
Hope this helps have a great day

the larvae of honey bee are voracious feeder why​

Answers

Answer: because of larva

Explanation: Larva. After three days, the egg hatches into a worm-like form called a larva. The worker bees feed the larva royal jelly for the first few days and then switch to honey and pollen. An exception to this is a future queen: this larva continues its diet of royal jelly.

what are the main pros of cloning

Answers

Answer:

Pros of Cloning

1. Help to Eliminate Defective/Weak Genes.

2. It is a Logical Step in Reproductive Technology.

3. It’s an Invention that can Change the Globe in a Positive Way.

4. Improve Recovery in Traumatic Injuries.

5. Bring out a New and Genetically modified Genes.

6. Eliminate Infertility.

7. Cures Disorders.

Explanation:

Albison Energy

Sources:

Blackall LL, Burrell PC, Gwilliam H, Bradford D, Bond PL, Hugenholtz P. The use of 16S rDNA clone libraries to describe the microbial diversity of activated sludge communities. Water Science and Technology. 1998 Jan 1;37(4-5):451-4.

LaBar M. The pros and cons of human cloning. Thought: Fordham University Quarterly. 1984 Aug 1;59(3):319-33.

Cerf NJ, Grangier P. From quantum cloning to quantum key distribution with continuous variables: a review. JOSA B. 2007 Feb 1;24(2):324-34.

It can help prevent the extinction of species. As many organisms in the planet approach endangerment and extinction, cloning appears to be a possible solution to restore populations. ...
It can help increase food production. ...
It can help couples who want to have children.

when we observe an organism or environment what are we observing A. changes B. similarities C. colors​

Answers

Answer:

II really have no idea but it might be A?

Explanation:

If I'm wrong I'm so sry T-T

Answer:

A. changes

Explanation:

i took the test and i got it correct trust me

The name of the process that takes place when sugars are broken down in the absence
of oxygen is

Answers

Carbohydrate metabolism

Answer: fermentation

Explanation:

If oxygen is absent during the second stage of cellular respiration, fermentation will occur

hope this helps :)

Based on the model, students can conclude all the following valid claims EXCEPT

Answers

Answer:the nucleus carries a positive electrical charge

Thank you! have a good day.

6
An antibiotic label says to take it for fourteen days. If we stop taking the medication after ten days, what would most likely
happen to the bacteria in our body?
A The bacteria causes the human immune system to stop producing antibodies to fight disease.
B A population of bacteria resistant to the antibiotic appears.
The strain of bacteria allows the human immune system to build up resistance.
The bacteria builds up a resistance to all types of antibiotics, turning into a "superbug".

Answers

Answer:

B

Explanation:

This actually happened to me! Since you don't fully kill off all the bacteria, they will mutate and become resistant to the medication. The 14 days ensures that the bacteria will all be killed whereas 10 days allows the stronger organisms to grow and reproduce(where they typically are immune/build an immunity)

which lunar phase occurs when the moon is directly across from the sun with the Earth in the middle. During this phase we see light reflected off the entire near side of the moon

Answers

That would be a full lunar eclipse

What factors affect gravitational force?

Answers

Answer:

[tex]mass \\ weight \\ presence \: of \: other \: field \: forces[/tex]

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

HEELLPPP QUICKKK PLSSSS
10 points

Answers

Answer:

a

I THINK SORRY IF WRONG NOT 100% SURE

Explanation:

it is a because the other guy said so

2. Which of the following statements is true of tertiary
consumers in an ecosystem?
A) There are more secondary consumers than
tertiary consumers.
B) They are caten by secondary consumers.
C) They contain the most biomass out of all of the
trophievels.
D) They are the largest trophic level.
E) This level of the food chain has the highest
amount of diversity.

Answers

The answer would be B.
Hope this helps have a great day:)

They attract secondary consumers, this applies to the tertiary consumers of the ecosystem.

What do you mean by ecosystem?

An ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are interconnected through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into the plant tissue.

The term "ecosystem" was first used in 1935 in a publication by British environmentalist Arthur Tansley. The term was coined by Arthur Roy Clapham, who coined the word at Tansley's request.

The main ecosystem types  are forest, desert, rainforest, grassland, tundra, savanna, and mountain ecosystems.

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Blood isn't the only natural system that uses acid/base buffers. Limestone is made of calcium carbonate. How would you expect the pH of a lake with limestone bedrock to compare to other lakes after several years of acid rain?​

Answers

Since the lime stone acts as a filter I believe the pH would be around 4 to 9 it wouldn’t be too acidic because of the lime stone and it wouldn’t be too alkaline because there’s no chemicals in it

What would eventually happen to a cell left in a hypotonic solution?
a. The cell would not change
b. The cell would shrink and shrivel
C. The cell would get bigger and eventually explode

Answers

Answer: C. The cell would get bigger and eventually explode :) hope this helps

Answer:

I am pretty sure its C

Explanation:

the cell get bigger and explodes

explain how animal cells differ from plant cells with respect to the effects of net water movements

Answers

Answer:

Terms in this set (4) Animal cells do not have a cell wall, meanwhile plant cells do have a cell wall. As a result, water passes freely in an animal cell due to osmosis. In a hypotonic solution, there is more free water outside the cell than inside the cell.

You never have to worry about wastewater becoming contaminated because it can run through local treatment plants, true or false?

Answers

A person still have to be worried about wastewater becoming contaminated even though it passes through local treatment plants.

Wastewater refers to the water they has been used. It consists of the substances like human waste, oils, chemicals , food scraps etc.  

Even though used water runs through local treatment plants, it should be noted that not all the solid waste are removed as some of the waste will still end up getting into nearby rivers or streams and this can result in contamination when one eventually uses such water.

In conclusion, one still has to be worried even though the wastewater runs through local treatment plants. Therefore, the correct option is False.

Read related link on:

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Answer:

False

Explanation:

which of the following would be a quantitative observation
a. the attractiveness of the tail feathers of a male peacock is compared
b. butterfly wings are assessed to see which is the most orange in appearance
c. the height of radish seedlings is measured
d. the odor of different plants is compared to see which smells the worst

Answers

Answer:

c. the height of radish seedlings is measured

Explanation:

Quantitative measurements revolve around the quantity of things and exact measurements. The measured height of a radish seedling is the perfect example of that.

Memory technique:

Quantitative observations involve quantity (numbers).Qualitative observations involve quality (descriptions, features, i.e. color, smell, shape)

how can vaccinating individual people will help protect a whole population from malaria

Answers

Answer:

This is where Herd Immunity comes into play. Herd Immunity occurs when enough people become immune to a disease that it is unlikely to spread, even to those not vaccinated. Though you should get vaccinated if you can just to be safe.

Explanation:

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Which sentence correctly explains the process and conditions needed for sleet to form? (15 pointsss :)

Group of answer choices:

A. During thunderstorms and extremely cold temperatures, water droplets freeze in layers and form balls or chunks of ice.

B. Both the temperature of the cloud and the temperature of the air must be below freezing in order for the flakes to fall from the sky.

C. A liquid form of precipitation that is formed in above freezing temperatures becomes heavier as it falls the ground in the form of raindrops.

D. Ice crystals melt as they fall through a warm layer of air and then refreeze into small ice pellets as they pass through a colder layer of air.

Answers

green was not the impostor

Explanation:

u are all idiots

Answer:

gerijddhbdykbzdkvci

Buffers are substances that help resist shifts in pH by (From the close reading exercises)

A. releasing H+ to a solution when acids are added.

B. donating H+ to a solution when bases are added.

C. accepting H+ from a solution when acids are added.

D. both donating H+ and accepting H+.​

Answers

Answer:

Buffers are substances that help resist shifts in pH by both donating H⁺ and accepting H⁺ (option D).

Explanation:

A buffer is a chemical substance capable of balancing the pH of a solution, when the balance is altered by the addition of an acid or a base. They are also called cushioning solution, and can be formed by an acid and its base conjugated, with a specific range of action.

The presence of a buffer in a solution has the ability to release hydrogen ions (H⁺) or accept them, helping to balance the pH, in the presence of a base or an acid, respectively. That is, a buffer can yield H⁺ to a solution when there are few or accept H⁺ when its content is high.

The other options are not correct because:

    A. Buffers do not release H+ into a solution when acids are added, but accept them.

     B and C.  Giving up H+ to a solution when bases are added or accepting H+ from a solution when acids are added are effects that buffers can potentially do, which is described in the text above.

C) Explain the difference in how the plant and the woman get glucose molecules to use for energy

Answers

Answer:

Ok:

Explanation:

The woman eats and digests food to get glucose while the plant can undergo photosynthesis which forms glucose.

The plant and the woman utilize different mechanisms for accumulating glucose in their body to use for energy.

What is Glucose?

Glucose may be defined as the main type of sugar in the blood which provides immediate energy to the body's tissues to perform metabolic activities.

Plants utilize the process of photosynthesis to construct their food
(glucose) with the help of carbon dioxide and water in the presence of sunlight, while the woman eats food products which are then digested into the stomach, and glucose is synthesized which is then transported into the bloodstream.

Therefore, it is well described above.

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At which point in the graph has the population reached carrying capacity?

A. Point B
B. Point A
C. Point C
D. Point D​

Answers

A. Point B is the answer

Which organelle should be listed under both in the diagram?

Answers

Answer:

animal and plant cells

8. A scientist noticed that the number of salamanders in ponds in Manatee County was
declining. This was a(n): (1 point)
O Hypothesis
O Theory
O Observation
Control

Answers

observation is the answer

hope this helps

Please answer quickly!!!!!

Which property of argon makes it useful for potassium-argon dating?

It decays into potassium.

It is an unstable element.

It remains trapped in rock.

It is useful only for dating newer rock.

Answers

Answer:

The correct answer is c, plz give me brainlest

Explanation:

got 100 percent on the quiz

A property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.

What is Radioactive dating?

Radioactive dating may be defined as a type of methodology for dating rocks and minerals with the help of radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks.

Potassium-argon dating is a method of determining the time of origin of rocks by estimating the ratio of radioactive argon in order to radioactive potassium in the rock. This dating method is typically based on the decay of radioactive potassium-40 to radioactive argon-40 in minerals and rocks.

Therefore, a property of argon that makes it useful for potassium-argon dating is that it decays into potassium. Thus, the correct option for this question is A.

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Which best describes the permeability of a membrane?
O A. The total thickness of the membrane
B. The flexibility of the membrane
C. The number of molecules in the membrane
D. The ability to allow materials to cross a membrane

Answers

Answer:

D

Explanation:

D. is correct because the membrane works like a security guard and only allows certain materails to cross the membrane. The definition of permeability is the state or quality that allows something to pass through.

Permeability is a standard of easy motion of liquid and gases through a membrane or material. They allow the transportation and exchange of gases in a cell.

The statement that best describes the permeability of a membrane is:

Option D. The ability to allow materials to cross a membrane.

This can be explained as:

Permeability is a physical property of membranes and substances that allows the other molecules to move through them.

It acts as a barrier from substances entering and exiting the cell or membrane and maintains the balance in a system.

Therefore, permeability is the allowance of materials across the membrane.

To learn more about permeability follow the link:

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Paleomagnetism is the study of

Answers

Answer:

B

Explanation:

ancient study of both rocks and earth as a whole

B. Over the last 100 years

HELP FOR BRAINLIEST!

Answers

for me its glitched or word cut off i see no picture or question :/

Compared to the Sun, the star Betelgeuse is
A. Less luminous and warmer
B. Less luminous and cooler
C. More luminous and warmer
D. More luminous and cooler

Answers

The answer to that is A

Red supergiant star Betelgeuse is around 764 times as massive as the Sun. To put that into perspective, the diameter of Mars' orbit around the Sun is 328 times that of the Sun. Thus, option A is correct.

What is the comparison of Sun and star Betelgeuse?

Betelgeuse is 640 light years away from the sun. Given that the star is only 10 million years old, it will die young like earlier supergiants.

The sun, in contrast, is only approximately halfway through its life and is nearly 4.6 billion years old.

Betelgeuse is one of the gleaming stars in the night sky and can be seen clearly on the right shoulder of the constellation Orion.

Betelgeuse is a red supergiant that is 1,400 times bigger than our Sun and thousands of times brighter.

Therefore, Compared to the Sun, the star Betelgeuse is  Less luminous and warmer.

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1. Define the following terms:
a.Producer
b.Autotraph
c.Consumer
d.Heterotroph
e.Chemosynthesis
f.Photosynthesis

2. How does the stability of an ecosystem depend on its producers?

3. What are two process used by producers to obtain energy?

4. There are very few producers that live deep below a lake's surface. Suggest an explanation for this patter.

5. Could producers survive without consumers? Why or why not?

Answers

Explanation:

Autotroph are known as producers

(1) Producer: An organism that makes it's own food it is the first Link any food chain[ green plants]

(2) Autotroph: An organism capable of synthesizing its own food from non-living substances using light or chemical energy.

(3) Consumer: An organism that eats other organisms

(4) Heterotroph: Organisms that obtain its food and energy by taking in living or once living material, usually plant or animal matter.

(5) Chemosynthesis: Process by which some organisms, such as certai (1) Producer: An organism that makes it's own food it is the first Link any food chain[ green plants]

(2) Autotroph: An organism capable of synthesizing its own food from non-living substances using light or chemical energy.

(3) Consumer: An organism that eats other organisms

(4) Heterotroph: Organisms that obtain its food and energy by taking in living or once living material, usually plant or animal matter.

(5) Chemosynthesis: Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates

(6) Photosynthesis: A process plants use to turn sunlight into food

How does the stability on an ecosystem depend on its producers?
they provide the basis for an ecosystems energy

What are the two processes used by producers to obtain energy?
photosynthesis and chemosynthesis

Few producers live deep below a lakes surface, suggest an explanation for this pattern
since sunlight is where most of the energy in an ecosystem comes from, there is less sunlight deep in a lake meaning less organisms can survive

Could producers survive without consumers?
without consumers, there would be too many producers and they would all compete with each other until they died out


I did this on quizlet, hope this helps!

Which text would MOST likely require the strongest reading skills?

A: a list of library books

B: a newspaper article

C: rules for a gym membership

D: a restaurant menu

Answers

Answer:

C

Explanation:

The terms and conditions of contracts are very complex and hard to understand.

C, rules for a gym membership
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