Which of the following units is used to express electrical charge?
A: Newton
B: Coulomb
C: Joule
Answers
Answer:
B. Coulomb
Explanation:
Related Questions
Mandeep climbs up a 10 meter ladder with a force of 4 Newtons in 20 seconds. What is his power output?
40 Nm/sec
2 Nm
2 Nm/sec
40 Nm
Answers
Explanation:
Work Done = Force * Displacement
= (4N)(10m) = 40J.
Power = Work Done / Time
= (40J)/(20s) = 2J/s = 2 Nm/sec.
Answer:
40 m
Explanation:
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
What would happen to the digestion process if enzymes were not present
Answers
Answer: It would take 2.3 billion years for the biological reaction without the presence of enzymes. It’s because, without them, your body can’t break down foods so that nutrients can be fully absorbed. Every organ, every tissue, and every 100 trillion cells in our body rely upon the reaction of metabolic enzymes and their energy component.
Explanation:
I hope this helps
Without enzymes, the body would not be able to break down complex carbohydrates, proteins, and fats into their component molecules. This means that these nutrients would not be absorbed by the body and would be excreted as waste.
Additionally, the lack of enzymes would make it difficult for the body to digest and absorb vitamins and minerals. This could lead to malnutrition and other health problems over time.
Overall, the absence of enzymes from the digestive process would severely impair the body's ability to extract nutrients from food and could have negative consequences for overall health and well-being.
As Elevation increases which three things decrease?
Answers
Answer:
When the altitude is increasing, the total atmospheric pressure decreases, and then the partial pressure of oxygen is also decreasing (assuming a constant proportion of O2 in air). You will then obtain a decrease of DO concentration with altitude elevation (at constant temperature and constant water composition of course).
Explanation:
You will then obtain a decrease of DO concentration with altitude elevation (at constant temperature and constant water composition of course).
Use the data in the table to explain how you could determine the volume of the block.
Answers
To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
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•Then I should :calculate the time of the block to fall
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
ANSWER QUICKLY PLEASE!
How do the masses of objects affect the gravitational force between them?
Answers
Answer:
the larger the mass, the greater the gravitational pull of an object
Explanation:
hope this helps I think that's what u meant lol
A student is flying west on a school trip from Winnipeg to Calgary in a jet that has an air velocity of 792 km/h.The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h [N] is _____° S of W. (give your answer with the correct number of significant digits and do not include units)
Answers
Answer:
The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] is 4.5° S of W
Explanation:
The given parameters are;
Velocity of Jet = 792 km/h
Direction of jet velocity = West
Velocity of wind = 62.0 km/h
Direction of wind velocity = North
Therefore, the jet has to have a component of 62.0 km/h South of West to compensate for the wind velocity
The direction of the plane, θ° South of West (S of W) to compensate for the wind is given as follows;
\(Tan \left (\theta \right )= \dfrac{62}{792} = \dfrac{31}{396}\)
Therefore;
\(\theta = tan^{-1}\left (\dfrac{31}{396} \right ) = 4.476^{\circ} \approx 4.5^{\circ}\)
The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] = 4.5° S of W.
The direction the plane would have to fly to is : 4.5° south of west
Given data :
Jet velocity = 792 km/h
wind velocity = 62 km/h
Given that the direction of the jet velocity is west and the direction of the wind velocity is north.
The direction of component velocity of the Jet would be 62 km/h south of west
Determine the direction ( ∅ ) of the plane south of westTan ( ∅ ) = 62 / 792
Therefore ( ∅ ) = Tan⁻¹ ( 62/792 )
≈ 4.5° S of W
Hence we can conclude that The direction the plane would have to fly to is : 4.5° south of west
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Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:
Answers
Answer's C
Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Please help with the chart.
Answers
Multicellular: An organism with multiple cells
Eukaryotic: A cell that contains a nucleus
Prokaryotic: A cell with no nucleus
Autotrophic: An organism that has the ability to make their own food
Heterotrophic: Organism that cannot create their own food
Asexual reproduction: When an organism has the ability to create offspring without the help of another organism
Sexual Reproduction: When two organisms create an offspring using the gametes
Two similar fans are operating in a room. Fan 1 makes a squeaking noise while running. Fan 2 is silent.
Which fan is more energy efficient?
a. Fan 1, because Fan 2 cannot convert energy into sound.
b. Fan 2, because the silence indicates there is no energy transfer going on in the fan.
c. Fan 1, because the noise indicates there is no energy transfer going on in the fan.
d. Fan 2, because Fan 1 converts some energy to sound.
Answers
Answer:
Fan 1, because Fan 2 cannot convert energy into sound.
Explanation:
When Two similar fans are operating in a room. Fan 1 makes a squeaking noise while running. Fan 2 is silent. Then Fan 2 has more energy efficiency because Fan 1 converts some energy into sound. Therefore correct answer is D.
What is energy ?Energy is nothing but the ability to do work. there are different energies in different form which are thermal energy, mechanical energy, electric energy and sound energy etc.
According to first law of thermodynamic, Energy neither be created nor be destroyed. it can only be transferred from one form into another form.
in case of Fan 1, Electric energy is given to it but it makes a squeaking noise while running. It means that it transfer some amount of total energy in sound energy and remaining for mechanical energy. Fan 1 can not transfer all the energy in the mechanical energy, there is loss in the energy in the form of sound.
in case of Fan 2, it is silent, it is converting all the electric energy into mechanical energy. there is no loss of energy. hence it is more energy efficient.
Hence option D is correct.
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Density of water is 1000 kg/m^3. What will be the volume of 35000 kg water?
Answers
Volume = 35000/1000
Volume = 35m^3
Which layer of the atmosphere do most planes fly in?
A. Troposphere B. Stratosphere C. Mesosphere D. Thermosphere E. Exosphere
Answers
Answer:
It is the Stratosphere.
Explanation:
Brainliest?
How do we know there has not been an increase in the number of earthquakes? Officials from the U.S. Geological Survey, the government agency that keeps track of earthquakes, point to statistics. On average, there have been no more earthquakes so far in 2010 than there were in previous years.
What Happens During Earthquakes?
In reality, it's not the number of quakes that has gained our attention, but the devastating impact quakes can have. Earthquakes are very natural—it's inevitable that they'll happen because of the way the planet works. The earth's surface is made up of tectonic plates that fit together like puzzle pieces and are always moving past each other. When two of the plates' edges get caught, stress builds up at the fault line—the crack between the plates. When the plates are finally able to break free of each other, the stress is released, and an earthquake occurs. Earthquakes of varying strengths happen every day, usually at fault lines. Some of these quakes have a high magnitude, while others are relatively weak. But it's often where an earthquake takes place that determines whether it will be something that goes largely unnoticed, or a disaster that affects thousands of people.
What Is Changing?
In the past, earthquakes were not as much of a problem because Earth's population was smaller, and cities were less populated.
"Look at some of the big [earthquakes] recently," said Debarati Guha-Sapir of the World Health Organization. Guha-Sapir cited some earthquakes that took place in areas where the population had increased in recent years, making the quakes more serious. "Had the Izmit or Bhuj quakes [of 1999 and 2001] happened 30 years ago, the events would have been relatively insignificant, as the [populations] of these cities were a third of what [they were when the earthquakes happened]. Increasing population density makes a small event into a big one."
Some of the earthquakes that took place in early 2010 occurred in highly populated areas, as well. More people are moving into megacities that happen to be built on fault lines—and many cities are on fault lines. Of the 130 cities with more than one million people, more than half are in earthquake zones, making them more prone to earthquakes.
In many of these cities, officials have drawn up laws requiring that buildings be designed and constructed to endure earthquakes. But some cities, particularly those in developing countries, lack the resources to do this. There, people are rapidly putting up substandard buildings that can't withstand the force of the shaking earth. For example, the Haiti earthquake took place near the nation's crowded capital. There was a great deal of destruction because there were "too many people crammed into a city that wasn't meant to have that many people and have an earthquake," said University of Miami geologist Tim Dixon.
Another reason quakes seem worse is that we're paying more attention. Everyone noticed when the Haiti earthquake was quickly followed by the Chile earthquake. Many people watched the news and the Internet for updates on these disasters, unable to believe that they were seeing two major earthquakes in such a short period of time. But eventually, the earth will have a period when earthquakes are minor or in unpopulated areas. Then people won't notice quite so much anymore.
"People are paying attention to the violent planet we've always lived in," said Dennis Mileti, a seismic researcher. "Come back [at a time when] there have been no [noticeable] earthquakes, [and] most people will have forgotten [about them] again."
According to the article, what is one reason why it seems as if the world is experiencing more earthquakes than usual?
Answers
Answer: because there has not been one in years
Explanation: there was not on now 2023, 2022, 2021, 2020, and 2019
Answer:
The number of earthquakes has not increased because earthquakes didn't happen in the USA for a while.
Explanation:
(you can just say a color)
Answers
Answer:
I think its red
Explanation:
divide the distance 8000 by the hours 10 to get 800
Answer:
Red.
Explanation:
If you divide the distance by the time, you will discover that the airplane traveled 800 miles per hour.
Pls mark Brainliest with the crown.
Which technological advancement made the Pony Express unnecessary?
Steamships
Cotton Gin
Telegraph
Steel Plow
Answers
Answer: Option (C) is correct, Telegraph
Explanation: Hope it helps!
Good luck!!!
Which is the source of variations in a population of organisms? No files or links 8th Grade. Please help ASAP.
A- Changes in enviroment
B- Changes in genes
C- The interaction of genes with an enviroment
D- The interaction of individuals with an enviroment
Answers
Please Help Me!!!!!!
Answers
Answer:
C: Electrical to chemical
the electricity turns into chemical energy to light the candle.
In order to ride a bike up a hill with increasing speed—
the rider’s pedal force must be less than friction and the force of gravity
the rider’s pedal force must be equal to than friction and the force of gravity
the rider’s pedal force must be greater than friction and the force of gravity
It is impossible to ride up a hill with increasing speed.
Answers
Answer: the rider’s pedal force must be greater than friction and the force of gravity
Explanation:
This is because if the pedal force was less, you would go slower, and it is obviously not impossible to ride up a hill without increasing speed. But if the force was greater, your speed would increase.
1. Sketch a picture of the components of a galaxy. Write the name of our galaxy as the title of your drawing.2. Investigation3. Ervin is a current 5th grade student. One weekend he went on a trip to the beach with his family. After arriving at the beach, his mother put sunscreen on him to protect him from the Sun. Ervin and his older brother decided to go swimming in the ocean. While swimming his brother pointed out how large the Sun appeared. Later in the day, the Sun was covered up by dark clouds. When the Sun got covered, Ervin decided to stop swimming.At school on Monday, Ervin’s class was learning about the Sun. Ms. Chabert, his teacher, posed 3 questions to the class. Ervin was excited because he was able to use what he learned about the Sun at the beach to answer each question correctly. Use what YOU know about the Sun to answer the questions that Ervin’s teacher posed to the class. Answer in complete sentences please.A. Is the Sun a star?B. Why does the Sun appear large and bright?C. Is the Sun the largest star in the sky?D. What types of energy does the Sun give off?E. How does energy help us on a daily basis?
Answers
What is friction? Help plsss. Most accurate one will get brainliest!
Answers
Answer:
Explanation:
Friction is a force which opposes the relative motion of two objects in contact.
Answer: The resistance that one surface or object encounters when moving over another
Explanation: The action of one surface or object rubbing against one another.
Example: Sally rubbed the two sticks TOGETHER that is an example of friction.
WILL RATE BRAINLIEST!!!
When you use electricity in your home,
which resources are powering it?
Research the energy resources used
to power your state’s electrical grid
(that’s what supplies your home with
electricity). In the space below or on
a separate sheet of paper, create an
informative handout to provide to the
people of your state.
Include the following information in your handout:
• Which state do you live in?
• What is the population of your state?
• What percent of the electricity in your state comes from
nonrenewable resources?
• What percent of the electricity in your state comes from
renewable resources?
• What percent of the electricity in your state comes from
nuclear energy?
• Which renewable resource is used the most in your state?
• What is an interesting fact about energy usage in your
state?
I live in United Arab Emarates/Dubai
Answers
Powering Your Home: Understanding Energy Resources in Dubai, United Arab Emirates
Dubai, one of the seven emirates of the United Arab Emirates, is a rapidly growing city with a population of over 3.3 million people. With the increase in population and development, the demand for electricity has also risen significantly. Have you ever wondered where the electricity that powers your home comes from? In this handout, we will provide you with information about the energy resources used to power the electrical grid in Dubai.
Nonrenewable Resources:
Dubai relies heavily on nonrenewable resources such as natural gas and oil to generate electricity. As per Dubai Electricity and Water Authority (DEWA), in 2020, 94% of the electricity generated in Dubai came from natural gas and 6% from coal.
Renewable Resources:
Dubai has been working to diversify its energy mix by investing in renewable resources. According to DEWA, 6% of Dubai's electricity in 2020 was generated from renewable sources, such as solar and waste-to-energy. DEWA has set a target to increase the share of renewable energy in Dubai's energy mix to 75% by 2050.
Nuclear Energy:
Dubai is also investing in nuclear energy to diversify its energy mix. The first nuclear power plant in the UAE, the Barakah Nuclear Energy Plant, started operations in 2020. It is expected to generate 5.6 GW of electricity and will contribute to reducing carbon emissions.
Most Used Renewable Resource:
Dubai has the world's largest single-site solar energy project, the Mohammed bin Rashid Al Maktoum Solar Park. It is a key component of Dubai's clean energy strategy, and its capacity is expected to reach 5 GW by 2030. The solar park uses photovoltaic solar panels to convert sunlight into electricity.
Interesting Fact:
Dubai is home to the world's tallest building, the Burj Khalifa, which has been designed to be energy-efficient. It uses a combination of technologies such as a high-performance glass facade, an efficient air-conditioning system, and a double-decker elevator system that reduces energy consumption by 20%.
Conclusion:
Dubai's energy mix is currently dominated by nonrenewable resources, with natural gas being the primary source of electricity generation. However, the city is making significant strides to increase the share of renewable energy and diversify its energy mix. By investing in nuclear energy and the Mohammed bin Rashid Al Maktoum Solar Park, Dubai is working towards achieving its goal of becoming a sustainable city and reducing its carbon footprint.
Answer: Windmills and solar panels
Explanation: It is used by solar energy from energy and friction with the atmosphere and CO2
Which graph below best shows how the speed of the molecules in ice cream change as it melts? _____________
Answers
Answer:
1
Explanation:
Because as the temperature increases so does the speed of the molecules because in a solid the molecules are packed very tight and close together allowing for little movement in a liquid the molecules are packed as close
To each other allowing for more movement meaning in a liquid the molecules move faster than a solid
Answer: it’s number 2
Explanation:
help on these 2 pls ASAP!!!!!!
BTW ITS A SCI QUESTION
Answers
Answer:
Net force
I think it’s balanced force
I WILL GIVE U BRAINLIEST PLSS HELP You have two balloons. You rub each balloon on your hair and your friends hair. You and your friends hair then sticks to the balloon because of static electricity. The balloon is positively charged and your hair is negatively charged so they attract. What would happen if you tried to put the balloons together?
Answers
Answer: The balloon is charged by rubbing it on your hair. When you put it near a neutral object (paper, Styrofoam or puffed rice cereal), the electrons in the object repel away from the balloon and the protons are attracted to the balloon. This movement of the electrons causes the neutral object to get a low positive charge.
Explanation:
Please Help T-T
1. The process by which fractures in rocks are enlarged due to plant roots is known as-
A. plant fracturing
B. root wedging
C. plant enlarging
D. none of the above
2. The burning of fossil fuels contributes to which of the following?
A. mechanical weathering
B. lower levels of carbon dioxide
C. acid rain
D. all of the above
3. Which of the following is not an agent of weathering?
A. soil
B. glaciers
C. wind
D. precipitation
4. The breakdown of rock material in its current location is known as-
A. erosion
B. weathering
C. deposition
D. landslide
Thank you so much for your help!
Answers
Answer:
1) B. root wedging
2) D. all of the above
3) A. soil
4) B. weathering
:)
Explanation:
2. Lower levels of carbon dioxide
3.Glaciers
4.Erosion
Dominant alleles are almost always represented with the uppercase form of a letter. True or false?
Answers
Answer:
True
Explanation:
Dominant alleles are always represented with uppercase letters
What is an ecosystem? Group of answer choices An ecosystem is all different populations of animals in an area. An ecosystem is a community of plants and animals and their physical surroundings. An ecosystem is a single example of a particular species of plant or animal. An ecosystem is all the organisms of a particular kind of species and their surroundings.
Answers
Answer: An ecosystem is a community of plants and animals and their physical surroundings
Explanation: An ecosystem is a geographic area where plants, animals, and other organisms as well as weather and landscape work together to form a bubble of life. Ecosystems contain biotic and abiotic factors both. Biotic factors include plants, animals, and other organism
Answer: An ecosystem is a community of plants and animals and their physical surroundings.
Explanation: Ecosystem plays an essential role for the existence of living organisms in the planet Earth. A balanced ecosystem is attained as a result of various reasons it includes the live ratio of diverse varieties of organisms in a particular ecosystem, necessary physical, biological, and chemical conditions that promotes the living of organisms, and the balanced atmosphere attained as the result of temperature, wind, and humidity.
As all the above mentioned properties are necessary for maintaining a sustainable ecosystem, it is clearly understood that an ecosystem is a community of plants and animals and their physical surroundings.
What is a major drawback of nuclear energy? (1 point)
Answers
Answer:
Nuclear waste
Explanation:
It is extremely radioactive and can remain radioactive for hundreds of years.
Nuclear disasters are also very important and one of the major downsides of nuclear energy. Take Chernobyl for an example, the radiation produced by nuclear energy can cause plants animals and humans to suffer from diseases, mutations, and malfunctions. They also cosmetically damage skin and the environment with chemicals.