Construction workers attach ropes and pulleys to wooden timbers on an old bridge.
They use the rope and pulley system like the one in the diagram below to move the
timbers away from each other, in order to dismantle the bridge.

Answers

Answer 1

Answer:

It is a safe and efficient method.

Explanation:

This method of dismantle the bridge is also a good one but there are some other methods also that are used instead of rope and pulley system such as destroy the bridge by using bombs at the base of pillars and cutting of each part in order to dismantle the bridge. This rope and pulley system is also an efficient way to dismantle the bridge so that's why the engineers used this method instead of other methods due to its safe method.


Related Questions

What is the definition of totipotent?

Answers

Answer:

This is what it means,

Explanation:

of an immature or stem cell) capable of giving rise to any cell type or (of a blastomere) a complete embryo.

"totipotent embryo cells can differentiate into a hundred different cell types specialized to form such tissues as skin, marrow, and muscle"

Answer:

(of an immature or stem cell) capable of giving rise to any cell type or (of a blastomere) a complete embryo.

Explanation:

24. The use of both pollen and spores in forensic studies is based on:
a. Baird's principle of exchange.
c. Lockhart's principle of exchange.
b. Locard's principle of exchange.
d. None of these choices.

Answers

B . Locard’s principle of exchange.

The answer options are on the picture with the map.


1. Location of the letter (1) in the word Atlantic Ocean (East of the U.S)

2. Location of the word ocean in Indian Ocean

3. Location of the northern boundary in Florida

4. Location of the letter (o) in Arctic Ocean (on the left side of the map)

Answers

Answer:

Base your answer to the following question on the cross section below and ... C) 40 km toward the Mid-Atlantic Ridge ... According to the cross section, every 1 million years, the ocean floor bedrock ... Rifting of tectonic plates in eastern North America ... Which world map shows the locations where most earthquakes

Explanation:

hey guys, imma get straight to it:

17. Location of the letter (i) in the word Atlantic ocean (east of the U.S.)

A. 60 degrees east longitude

18. Location of the word ocean in Indian ocean

C. 15 degrees south latitude

19. Location of the northern boundary of Florida

D. 30 degrees north latitude

20. Location of the letter (O) in Artic Ocean (on the left side of the map)

B. 60 degrees west longitude

what they meant by i is the letter, on the map you look at the letter i and pinpoint it. same with O, hope this helps you out.

HELP PLEASE!!
help me match each vocabulary!!

Answers

I’m pretty sure ancho’s got the answer

Study the organ systems in the diagram below.
rema
The organ system that filters and removes waste from the human body

Answers

Answer:

The urinary system filters and removes waste from the human body

Which of The following are challenges to implementing sustainable farming practices? Select two correct answers.

a. increased need for fertilizer
b. lack of pollinating insects
c. higher initial costs
d. increased erosion
e. increase labor costs

Answers

Answer:

I think its A and E

Explanation:

^^^^^^

The challenges to implementing sustainable farming practices: higher initial costs;  increase labor costs.

What is  sustainable agriculture?

It is an integrated system which includes both plant and animal farming practices, which hence has a minimum effect on the environment. It involves using substances of natural origin and hence meets the needs without causing an adverse impact on the environment.

What are its advantages?It prevents pollution since the waste remains in the farm's ecosystem.There is a reduction in the production of waste, and the waste of one is used in the other.It saves energy as there is a lower requirement for non-renewable resources.It doesn't use agrochemicals.It involves methods that reduce soil erosion, like managing irrigation, covering the soil with tillage.What are its disadvantages?It takes more effort since the use of machines is minimal.Limited use of land and hence, mass production is not possible.What are the challenges?New farmers have to struggle with high labor demand since it involves less use of machines and hence more workers are required.Before harvesting their first crop, young farmers require a huge sum of up-front capital, which is even more for biologically diverse farms.

Hence the correct options are (c) and (e) higher initial costs;  increase labor costs.

To learn more about sustainable farming here,

https://brainly.com/question/15840377

#SPJ2

Scientists have discovered a new molecule found in the blood of wallabies. The molecule contains only carbon, hydrogen, and oxygen. After further examination, scientists discovered that the C, H, and O are in a 1:2:1 ratio. This molecule is most likely a ________.?

Answers

Answer:

carbohydrate

Explanation:

The molecule discovered by scientists in the illustration is most likely to be a carbohydrate.

Among all the biomolecules, only carbohydrates have the molecular formula of ([tex]CH_2O[/tex])[tex]_n[/tex]. On the other hand, carbohydrates generally contain carbon (C), hydrogen (H), and oxygen (O) in the ratio 1:2:1.

Since the molecule discovered by the scientists has C, H, and O in the ratio 1:2:1, then, it is, therefore, best thought of as a carbohydrate.

What organisms in the ocean absorb the most carbon dioxide?
A. fish
B. ocean mammals, like whales and dolphins
C. algae and marine plants
D. coral

Answers

Answer:

im pretty sure its C

Explanation:

C. Algae and marine plants

Please help me with this but also take your time

Answers

all of the above can be considered ecosystems

Hello,

The answer is D. An ecosystem is anything living in that area. All answers have thing living, for example fish and insects.

Which of these organisms is capable of cellular respiration?
1. Kelp
2. Urchins
3. Otters

Answers

Answer:

Otters

Explanation:

Cellular respiration is the process of the cells inside the body breaking up the sugars and then the mitochodria turns it into energy for the cells. ... Inside the otter diffusion happens throughout the lungs.

(Really need help asap)

How can we, as a society of consumers, help fish stay a renewable resource?

A. Ban all fishing
B. All become vegan
C. Buy fish raised in fish farms
D. Buy aquariums​

Answers

Answer:

Fish go brrrrrrrrrr

Explanation: The answer is C so we can refill the fish supply without directly harming the fish in the ocean

Answer:

I just took the test its C. Buy fish raised in fish farms.

Explanation:

In the diagram below, cell division is represented by what letter?
A
D
B.
с
a
A

Answers

Answer:

Uhm I think D or C Maybe?

Explanation:

It's hard to look at and tell what you mean

A is G1

B is S

C is G2

D is cell divison

Complete the statement. (two words) A machine can help a person to​

Answers

Answer:

Pesistently:Efficiently

Explanation:

How would someone with diabetes know they need medical help?

Answers

You may be diagnosed with diabetes because you go to the doctor for: persistent infections or a slow-healing wound. complications that are associated with prolonged high blood sugar levels, such as numbness or tingling in your feet. heart problems.

HELP I NEED FAST PLZZZ Belinda wrote the following phrase to describe the movement of particles in a state of matter.

"Marbles glide past one another."

Which state of matter did Belinda most likely describe?

Answers

Answer:

Liquid

Explanation:

Its liquid!!!

Can Someone Help Me Please

Answers

Answer:

its a

Explanation:

it genetics thats get passed down from parents

Answer:

A. The passing of characteristics from parent to offspring

Explanation:

What direction will the unseen roots go in each image when the pot is
knocked over and put back up over time.

Answers

Answer:

left and right

Explanation:

how many chromosomes are in each daughter cell after meiosis 2​

Answers

Answer:

30 chromosomes

Explanation:

Each daughter cell will have 30 chromosomes

What part of the cardiovascular system is directly responsible for nutrient transport?

Answers

Answer:

Circulatory system

Explanation:

It is the body's delivery system, concerned with circulating blood to deliver oxygen and nutrients to every part of the body.

Answer:

blood

Explanation:

I took the test on edg.

which method of heat transfer is what caused the green house effect on earth

Answers

Answer:

Radiative transfer

Explanation:

The greenhouse effect is a phenomenon of radiative transfer, the process by which the energy of light waves is exchanged in matter. Radiative transfer dictates what energy is reflected, absorbed, and emitted.

Raccoons living in cities have learned to open the lids of garbage cans. This
is an example of an
?
O Physiological adaptations
O Structural adaptations
O Behavorial adaptations
O Selective breeding

Answers

Answer:I think the first one

Explanation:

Answer:

its behavorial adaption

Explanation:

Phycological adaption is less of what they are doing and more of how theybare doing it

and

structural adaption is how they adapt to their habitat

selective breeding just wouldnt make sense in this scenario

therefore the answer is behavoral adaption

hope this helps

Every monarch butterfly migrates. This statement _______. A) is true B) can be made true by change "Every" to "No" C) can be made true by deleting "monarch" D) can be made true by changing "Every" to "The final generation

Answers

Answer:

The answer is option A "Is True"

Explanation:

The Monarch is notable for its capacity to travel significant stretches, and the migrations in North America are one of the best common marvels on the planet. This butterfly is additionally periodically recorded from the English Isles, making it our biggest and most extraordinary traveler butterfly.

Each fall, a great many ruler butterflies move 3,000 miles from their favorable places in northeastern North America to spend the colder time of year in the timber lands of southwestern Mexico. Every movement is by new generation, so they can't gain from others. All things being equal, they depend on their qualities. Their antennae have a genetic clock that reveals to them when to move and to explore they measure the sun's situation not too far off with their eyes.

Why is it important to use renewable energy? And why does it help with climate change?

Answers

There is no path to protecting the climate without dramatically changing how we produce and use electricity: nearly 40% of US CO2 pollution comes from power plants burning fossil fuels. ... Renewable energy minimizes carbon pollution and has a much lower impact on our environment. And it's having its moment in the sun.

Answer:

Its important because using the fossil fuels is overheating the planet, and were just wasting something we will never get back, and renewable will make the planet cleaner. This will help because it will dis-polute the air and the ozone layer would be fixed and protect us from the suns rays of radiation with no more holes.

Explanation:

Hope this helps!

PLEASE THIS IS NOT DIFFICULT I WILL MARK BRAINLIST



4. Explain why transcription must occur in the nucleus.



5. Why does a cell need to carry out transcription before translation?

Answers

Answer:

4. Transcription takes place in the nucleus. It uses DNA as a template to make an RNA molecule. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. Translation reads the genetic code in mRNA and makes a protein.

5. Transcription needs to occur before translation because the product of transcription, messenger RNA (mRNA), is the starting material for translation.

True or false: even when your
research does not support your
hypothesis, the hypothesis has value.
O True
OFalse

Answers

The answer is False!!!!!!!!!!!!!!!

Which of the following is a nonrenewable resource?
A.wind
B. Natural gas
C.biomass
D.hydropower

Answers

the answer to this question is C :)

Answer: C biomass

Explanation:

What are the Reactants of Respiration?

a
Water and sunlight
b
Carbon dioxide and Sunlight
c
Food and Oxygen
d
Carbon dioxide and water

Answers

Answer:c.food and oxygen

Explanation:A and B are wrong because respiration does not need sunlight. D us wrong because CO2 are products if respiration, not reactants.

Can anyone help me in this question!!!

Answers

Answer:

its b

Explanation:

merry christmas

What are the sense organs in the human body?

Answers

Answer:

The sense organs in the human body are  the eyes, ears, nose, tongue, and skin. The sense organs are the body organs by which humans are able to see, smell, hear, taste, and touch or feel. The five sense organs are the eyes (for seeing), nose (for smelling), ears (for hearing), tongue (for tasting), and skin (for touching or feeling).

(I'm so sorry if it's wrong)

Hope this helps!

would the answer be B?

Answers

Answer:

yes it should be B.

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