Answers
Answer:
Coal, fossil fuels, electricity
Explanation:
Related Questions
When a force is applied to an object, its _____, the object _________________________________________________________.
Subject = Science
Answers
In order for radiation to transfer heat,
a electromagnetic waves must be transmitted
b objects must be in direct physical contact
c particles must circulate and move in a liquid or gas
d thermal energy must move from cold to hot objects
Answers
Answer:
b
Explanation:
i hope this is right bc im not sure
PLEASE HELP ME ASAP!!! THIS IS DUE IN 1 HOUR!!!
MONDAY-Explain how you find the volume of an object. (be detailed)
Answers
Veronica observes how the force of friction causes an object to slow down. She writes the following observation: When an object moves across a smooth surface, there is less friction created than when an object moves across a rough surface. When the object stops moving, friction is created. Which statement corrects the error(s) in Veronica's observations?
It is not smooth or rough surfaces that affects friction. It is the size of the push.
When an object moves across a rough surface, there is no friction.
When an object moves across a smooth surface, the friction increases.
When an object stops moving, there is no friction.
Answers
No surface is completely smooth, friction happens. There is higher friction between rougher surfaces. So, it is the wrong statement that smooth or rough surfaces do not affect friction.
What is friction?The resistance to motion of one object moving in relation to another is known as friction. It is not regarded as a fundamental force like gravity or electromagnetic.The interplay of small bumps on the surfaces of objects as they rub together is thought to be the primary source of friction, though scientists are not entirely certain of this. Particles that stick out above the rest can be found on even the most smooth surfaces. As the objects move, these high points collide and scrape against one another, creating resistance. Friction is brought on by this unwillingness to move.Sliding friction, fluid friction, and rolling friction are the three primary categories into which friction can be categorized. The items that are moving and the force being applied to them determine the type of friction.To learn more about friction, refer to
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can someone explain what these are used for our teacher never taught us about it
Answers
1st one so nonthing gets in your eyes
2nd one so nonthing gets on your shirt
3rd one is to wash your eyes when stuff gets in them
4th is when a fire breaks out and you use that to get rid of it
5th is for when someone is on fire you wave them with it
Sand at a beach becomes very warm after being exposed to sunlight for many hours due to what type of heat transfer?
A. Conduction
B. Convection
C. Raditation
Answers
Answer:
B
Explanation:
Answer:
C
Explanation:
When lie down on hot sand, the energy flows from the sand to your body by conduction. Conduction is the transfer of heat between two things that touch each other.
the difference between the three types of mechanical waves.
Answers
Hope this helps.
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Need this asap ill mark brainliest On the Internet, many authors post opinion articles on scientific topics. What are the benefits and drawbacks of these opinion articles in regard to scientific discussion?
Answers
Answer:
A benefit of the opinion of a scientific author is that you can see others points of view on a subject. A drawback is that they are using an opinion and most likely not stating unbiased facts.
Explanation:
Hope this helps
Answer:
Highlights:
*Researchers in the sciences do not see access to the scientific literature as an especially important problem.
*Authors consider factors such as journal reputation and the absence of publication fees when deciding where to submit their work. In contrast, free access is not a significant factor in their submission decisions.
Implications:
*While open access has the potential to expand the authorship and readership of the scientific literature, that potential has not yet been realized.
*Librarians who encourage scientists to publish in open access journals should be aware of the authors' priorities and perspectives. Authors in the sciences tend to focus on citation impact, reputation, and accessibility to a specialized readership—not breadth of readership, copyright, or access status.
*Journal publishers that charge publication fees may want to consider alternative sources of revenue. Authors' resistance to publication fees is a major barrier to greater participation in open access initiatives.
Explanation:
1. If the frequency of a wave increases from 2 Hz to 4 Hz without the wavelength changing, how will the wave speed change?
Answers
Answer:
Given expression: 6(2b-4). To find the value of 6(2b-4) at b= 5, we need to substitute the b=5 in the expression, we get….Therefore, the value of 6(2b-4) is 36, when b=5.
Explanation:
Given expression: 6(2b-4). To find the value of 6(2b-4) at b= 5, we need to substitute the b=5 in the expression, we get….Therefore, the value of 6(2b-4) is 36, when b=5.
In order for convection to transfer heat, particles need to
a circulate and move within a liquid or gas
b take contact with the heat source
c transmit electromagnetic waves
Answers
Answer:
Explanation:
the answer is a :)
What is the effect of this
A wave enters a new medium at an angle far from 90 degrees with the boundary between the two media.
Answers
Answer:
Waves transfer energy from one place to another without transferring matter. Wave motion (the movement of waves) can be shown by the vibrations of a spring or by water waves.
Hope this helps!! have a good day! :)
What type of spectrum is produced when electromagnetic radiation is emitted or absorbed as electrons change energy levels in an atom?
Answers
The type of spectrum is produced when electromagnetic radiation is emitted or absorbed as electrons change energy levels in an atom is hydrogen spectrum.
What is hydrogen spectrum?The hydrogen spectrum is given by the scientist Bohr and it consist of series name lyman, balmer, paschen, bracklet and p- fund as the electromagnetic radiations splits into this.
The lyman series is formed when electrons jumps from any hige energy level to n = 1 and will be same for balmer , pachen ,bracklet and p-fund are obtained when electrons jumps from any higher energy level to n = 2,3,4 and 5 respectively.
Therefore, type of spectrum is produced when electromagnetic radiation is emitted or absorbed as electrons change energy levels in an atom is hydrogen spectrum.
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Otis watches a cooking show on making mayonnaise. The chef dissolves salt and sugar in vinegar. She mixes in an egg yolk, and then mixes in oil until the ingredients are completely blended together. The chef says that it’s great on sandwiches and that it can be stored without separating.
Which best describes the purpose of the egg yolk in the recipe?
Answers
Answer:
It acts to hold the vinegar and oil together in a colloid.
Answer:
b
Explanation:
i took the test
In order for convection to transfer heat, particles need to
a circulate and move within a liquid or gas
b make contact with the heat source
c transmit electromagnetic waves
Answers
_________ energy is to the fission and fusion within an atom as ________ energy is to the fission of atomic compounds.
a. Chemical; Thermal
b. Nuclear; Chemical
c. Nuclear; Radiant
NEED HELP FAST
Answers
Answer:
Watch Naruto that's the answer
Explanation:
Which of these statements about heating up land and water is true?
Land and water are heated to the same temperature.
Land is heated through radiant energy.
Land heats up slower than water.
Land is heated by conduction.
Answers
Answer:
c
Explanation:
The correct statement regarding the heating up of land and water is " land heat up through radiant energy. Hence, option b is correct.
What is radiation?Radiation is the transfer of energy through space. The heat and light energy is reaching to the earth surface from the sun by radiation. Beside radiation, two other modes of heat transfer are conduction and convection.
Solids heats up by conduction in which the heat is transferred easily through the closed packed chain of molecules. Convection is the heat transfer mode for fluids. Where the hotter molecules rises up and make other molecules warmer.
The land heat up more fastly than water. Since the heat is transferring through the ground by conduction process and by convection in water. The heat radiated from sun warm up both land and water.
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Which device works by changing chemical energy to radiant energy?
A
desk lamp
B
flashlight
C
light bulb
D
solar panel
Answers
Energy neither be created or nor be destroyed, it can transfer one form to another form. chemical energy is converted into radiant energy is flashlight.
what is chemical energy?
Chemical energy is the energy of chemical substances that is released when they undergo a chemical reaction and transform into other substances.
Chemical energy is converted into electrical energy. i.e. in flash light usally there is a battery in flashlight, battery is made up of chemicals. chemical are in battery under go redox reaction and it converts chemical into electrical. i.e light is nothing but radiant energy.
In other desk lamp uses electric current supply, solar panel which convert solar energy in to electric energy. Light bulb glows by using electric current.
Thus, the electric energy in radiant energy is flashlight.
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Why is it important that we know the difference between viruses and bacteria?
Answers
Calculate the mass of a liquid with a density of 4.7 g/mL and a volume of 15 mL. help me plssssssssssssssssssssssssssssssssss
Answers
Answer:
70.5g
Explanation:
D=M/V
D=4.7 g/ml
V=15ml
plug into equation
4.7=m/15
multiply both sides by 15
m=70.5g
Answer:
70.5g/ml
Explanation:
density times volume
How does changing the Amplitude affect the energy of the wave?
Answers
When energy from the Sun reaches the air above land, the air warms and rises. Along a coastline, cooler air above the ocean flows toward the land to replace this rising air. Which of the following best describes these processes?
A. Conduction and Convection
B. Radiation and Convection
C. Conduction and Radiation
Answers
Ayala is making salad dressing. She mixes oil and vinegar in a blender until a smooth consistency is formed. Explain whether this is a heterogeneous or a homogeneous mixture and why.
Answers
Explanation:
ना रखो ज़रूरत सितारों की
ना खुवाइश रखो फालतू यारों की
बस एक दोस्त रखो हमारे जैसा
जो वाट लगा दे हजारों की
EASY How does the force of friction affect the motion of objects?
It causes the object to change direction.
It causes the object to create heat energy.
It causes the object to create kinetic energy.
It causes the object to slow down or stop.
Answers
Answer:
It causes the object to slow down or stop.
Explanation:
Friction is a unknown force pressing against another force slightly, making the moving object slow down.
What is the affect?
A wave enters a medium where its wave speed is higher.
Answers
Brent wants to fly a kite during a lightning storm at night. His friend warns him that this increases his chance of being struck by lightning. Which of the following helps to explain why this is true?
A.Lightning usually strikes at night.
B.Lightning usually strikes moving objects.
C.Lightning usually strikes objects made of fabric.
D.Lightning usually strikes objects high above the ground
Answers
Answer:
D
Explanation:
Answer:
D
Explanation:
The diagram shows a generator powered by a water turbine. Based on the diagram, what type of energy transformation takes place in the generator?
A
Mechanical energy is transformed into electrical energy.
B
Chemical energy is transformed into kinetic energy.
C
Electrical energy is transformed into potential energy.
D
Electrical energy is transformed into chemical energy.
Answers
Explanation:
The transformation takes place in the generator is mechanical energy is transformed into electrical energy. Hence option A is correct.
What is energy transformation?Energy transformation is defined as the conversion of energy from one form to another. The passage of energy from one place to another is known as energy transfer. When energy transforms, it goes from one type to another.
Hydroelectricity is a type of renewable energy that produces electricity by harnessing the force of moving water. Mechanical energy is transformed into electrical energy in a generator. Most generators create alternating current as their source of electricity. A generator spins when a turbine's blades rotate due to falling water, converting the mechanical energy of the spinning turbine into electrical energy.
Thus, the transformation takes place in the generator is mechanical energy is transformed into electrical energy. Hence option A is correct.
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What do you see happen when you decrease the frequency?
Answers
Hope this helps.
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According to the early classification system plants were put in the following categories: 1.______________________ 2. ______________________ 3.______________________
Answers
What did you have to look at it in order to correctly measure the amount of water in the graduated cylinder?
Answers
Answer:
Water sticks to the walls of the graduated cylinder, but only on the sides and not the middle. When students look at the surface, the water level is not straight.
Explanation:
meninges
meniscus
measles
metatarsle
How are strato volcanoes different from shield volcanoes?
Strato volcanoes are more explosive than shield volcanoes.
Strato volcanoes are only found by oceans and shield are not.
Shield volcanoes are always larger than strato volcanoes.
Shield volcanoes only produce ashes and strato volcanoes only produce lava.
Answers
Answer:
b
Explanation:
i got it right on USA Test prep
