is a television the most cost efficient communication?
Answers
Answer:
yes
Explanation:
Related Questions
Science
Cite Evidence Based on observations in your daily life, what evidence can you cite that supports the conclusion that some wavelengths of infrared (heat), visible light, and ultraviolet light pass through the barrier?
Answers
Answer:
UV radiation is widely used in industrial processes and in medical and dental practices for a variety of purposes, such as killing bacteria, creating fluorescent effects, curing inks and resins, phototherapy and suntanning.
Explanation:
Astronomers study objects as large as galaxies. Chemists study objects that can be as small as an atom. Which of the following is common to scientists working in different fields of science?
A. both fields use the same technology
B. both fields require the same basic knowledge
C. both fields are based on the same experiments
D. both fields use the same basic scientific methods
Answers
Answer:
A. both fields use the same technology
Explanation:
Please Help Me!!!!!!
Answers
Answer:
C: Electrical to chemical
the electricity turns into chemical energy to light the candle.
pleeaseeee helllp A geologist finds a large rock containing a fern fossil. This kind of fern grew on land in hot, moist climates.
What does this tell the geologist about the area at the time the rock was formed?
The area was covered by an ocean.
The area was muddy and wet.
The area was hot and tropical.
The area was snowy and cold.
Answers
Answer: The area was hot and tropical.
Explanation:
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:
I need help plz and thank you. This is past due and I will mark brainiest
Assignment Directions:
Choose 3 out of the 4 written assignments below to complete.
1. In a short paragraph, argue whether Abner Doubleday invented baseball.
2. Why was the decade 1920-1929 called the “Roaring Twenties”? Include a description of life during that era with the body of the essay to include three of the ten categories you outlined in your online notes.
4. Write an essay on a player in the Hall of Fame. Describe why they were inducted, their contribution to the game, the position and team they played for, and the year they played. Include anecdotes on the era they played.
Assignment Guidelines:
Written work must include accurate details
State a clear topic sentence for each paragraph
Include details and examples
Include a clear point of view
Submission Requirements:
Submit 3 of the 4 choices, each with its own title
When submitting written assignments please remember to:
• Submit the assignment question(s) and your responses.
• Proof-read for spelling, grammar, and punctuation.
• Remember complete sentence structure.
• Paragraphs need to have minimum of six sentences.
Answers
Answer:
reproduced in print form for non-profit educational use with. Reading ... 2. I had them in my backpack. 3. Help me look for them. 4. We don't want to get lost. 5. I'm so ... Commas set off introductory words, such as yes, no, and thank you. Rewrite ... Correct each run-on sentence below by writing it as a compound sentence. 1.
Explanation:
This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.
Answers
Answer:
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Explanation:
Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Give one example when it might be important to know how much gravitational potential energy is stored by an object. Why is it important?
Answers
Answer:
A possible situation in knowing the gravitational potential energy of an object is to find it's maximum kinetic energy. It can be important if I would want to calculate the velocity the object will be having if the potential gravitational energy will be converted into kinetic by using the formula.
What fraction of the Moon model was always lit up by the light in your model?
Answers
Answer:10
Explanation:
In the context of the Moon model, the fraction of the Moon that was always lit up by the light is half, or 1/2.
The explanation for this is that the Moon model discussed previously most likely depicts the Moon's phases as seen from Earth. The phases of the moon are caused by distinct areas of the lit side of the moon that are visible from Earth at various times during its orbit.
The Sun always illuminates half of the Moon's surface, leaving the other side in darkness. From Earth, we can only see the bright portion; the unlit portion is invisible. Different phases result from variations in the visible fraction of the lighted half of the Moon as it revolves around the Earth.
Therefore, the fraction of the Moon that was always lit up by the light is half, or 1/2.
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why do you think the moon appears to change shape as it revolves around the earth?
Answers
Explain what happens as the heart grows bigger.
Answers
Initially, the heart may grow bigger as a compensatory mechanism to try to keep up with increased demands for blood and oxygen. For example, if a person engages in regular exercise, their heart may enlarge to accommodate the increased demand for blood and oxygen to the muscles.
However, if the heart continues to grow over time, it can become less efficient at pumping blood and may develop structural abnormalities that increase the risk of heart failure, arrhythmias, and other complications.
In some cases, cardiac hypertrophy may be reversible if the underlying cause is treated, such as by managing high blood pressure or heart disease. However, if left untreated, hypertrophy can lead to irreversible damage to the heart muscle and may require more aggressive interventions, such as medication, surgery, or other medical procedures to manage the condition.
Suggest one way energy can be transferred without being transformed.
Answers
I don’t know if this is right though so don’t take my word for it
hey if your answering this can you just answer the number 14 I already got the rest
thanks
Answers
1. if i start with 48 ml of water in a graduated cylinder, after submerging an object the water level rises to 63 ml, what is the volume of the object.
2. if i start with 36 ml of water in a graduated cylinder, after submerging an object the water level rises to 43 ml, what is the volume of the object
Answers
63-48
= 15 ml
Since the water rises 15 ml in the graduated cylinder, its volume is 15 ml^3
2. 43 -36
=7ml^3
What type of presentation us easier to plan using a site map?
A. a presentation that lets users link our from a “home” page or slide
B. an animation created digitally using a program like Flash
C. a slide show that starts on slide one and goes slide by slide to the end
Answers
Answer:
I believe that the answer would be A
Explanation:
because there is all of the examples I found online have a home page.
A. a presentation that lets users link our from a “home” page or slide
Plss help me fast and finish all directions. Correct Drawing/picture plss. Make sure the drawing is clear so I can snip it and paste it.
Draw a Roller Coaster Track that starts with one large hill, then is followed
by a Valley and another, smaller hill. Draw a cart in four positions on the track as outlined below.
i. Draw the first cart at the top of the first hill. Label it A.
ii. Draw the second cart going down the first hill into the valley. Label it B.
iii. Draw the third cart at the bottom of the valley. Assume that the height of the cart in this position is zero. Label it C.
iv. Draw the last cart at the top of the second, smaller hill. Label it D.
Answers
Answer:
Ive left an image here for use, I hope its helpful
Explanation:
I have left two images and i hope i am answering your question.
Answer:
crop it if you want idc
Explanation:
HELP WITH THESE TWO PROBS PLEASE
Answers
Answer:
1. She is moving at a speed of \(147.18 ms^{-1}\).
2. The speed of the golf ball is \(78.1 m/s\).
Explanation:
1. We can say , at any moment the skydiver is having a kinetic energy of \(1/2 mv^2\)
(where, \(m\) is her mass and \(v\) is the velocity at that point)
Given, \(1/2mv^2 =704000\)
and, \(m = 65KG\)
So, putting the values we get,
\(v=147.18 ms^{-1}\)
2. \(KE=\frac{1}{2} mv^2\)
\(143.3J =\frac{1}{2} (.047)v^2\)
\(v^2=6097.9 m^2/s^2\)
\(v=78.1 m/s\)
Energy can only be converted from one form to another.
Agree/Disagree, why?
Answers
Answer:
Agree - energy can never be created or destroyed, it can only convert from one form to another (this is the Law of Conservation of Energy)
hope this helps! <3
AGREE !
First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed
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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What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
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.
(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.
This Is Chemistry Question, My Laptop Got Lag When I was Posting It :( Explain The Rutherford Atomic Model
Answer Should Be given With Headings!
Answers
Explanation:
that’s hard
Answer:
Rutherford conducted an experiment (α-particles scattering) in order to find the arrangement of electrons and protons in an atom. This experiment led to the discovery of nucleus in an atom.
Explanation:
Rutherford bombarded a thin gold foil (about 0.00004 cm thick) with alpha particles in an evacuated chamber. These particles got scattered and were allowed to to strike on a circular zinc sulphide coated screen. He observed a flash of light on the screen where the alpha particles struck. From this experiment, he made the following conclusions.
Observation 1: Most alpha particles (α-particles) pass straight through the gold foil without any deflection from their original paths.
Conclusion: There is a lot of empty space in the atom.
Observation 2: A few alpha particles were deflected, at small angles and a few at large angles.
Conclusion: There is a small positively charged object at the centre of the atom. He said this because as alpha rays are positively charged it can pass through only negatively charged particles and get deflected by the same charge. He concluded that the small positively charged object present within the atom is called the nucleus.
Observation 3: Very few alpha particles completely rebounded on hitting the gold foil.
Conclusion: The nucleus is dense and hard. It is located at the centre of the atom.
(Refer the picture given in the question)
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When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
Select the statement(s) that accurately characterize sound and light waves
sound and light wave are a repeating disturbance
Both sound and light waves need a medium to travel.
Sound and light travel in waves.
Sound and light waves carry energy.
Sound and light waves carry matter.
Answers
Answer:
All but number 5
Explanation:
A wave is a repeating disturbance or movement that transfers energy through matter or space, sound cannot travel through a vacuum and neither can light. light and sound travel in waves which is what makes them a repeating disturbance
All of the above except for 5
Explanation:
Explore the intricacies and conceptual challenges of the Holographic Principle in the context of the AdS/CFT correspondence. Investigate the fundamental ideas behind the holographic duality proposed by Juan Maldacena, which suggests an equivalence between a higher-dimensional gravitational theory and a lower-dimensional quantum field theory. Analyze the mathematical foundations and implications of this principle, including the idea that all the information contained within a region of space can be encoded on its boundary. Assess the potential revolutionary impact of the Holographic Principle on our understanding of quantum gravity, black holes, and the nature of spacetime itself.
Answers
Answer:
The Holographic Principle, proposed by physicist Gerard 't Hooft and further developed by Juan Maldacena, is a fascinating concept in theoretical physics that has sparked significant interest and research. In the context of the AdS/CFT correspondence, it suggests that a gravitational theory in a higher-dimensional space can be mathematically equivalent to a quantum field theory in a lower-dimensional space.
At the heart of the Holographic Principle is the idea that the information and dynamics of a higher-dimensional theory can be fully captured by its boundary, implying that the entire bulk can be "holographically" encoded on the boundary. This concept challenges our conventional understanding of the relationship between space, gravity, and quantum mechanics.
The holographic duality proposed by Maldacena specifically relates a gravitational theory in Anti-de Sitter space (AdS) with a conformal field theory (CFT) in one fewer dimension. In this correspondence, the gravitational theory describes a curved space-time with gravity, while the CFT is a quantum field theory without gravity but living on the boundary of the AdS space. The holographic duality suggests that the two theories are mathematically equivalent and provide equivalent descriptions of the same physical phenomena.
The mathematical foundations of the AdS/CFT correspondence involve advanced concepts from string theory and quantum field theory. String theory postulates that fundamental particles are not point-like entities but rather tiny vibrating strings. By considering these strings propagating in a higher-dimensional space, theorists discovered that they naturally give rise to gravity. The holographic duality emerged as a surprising consequence of studying string theory in the AdS space.
The implications of the Holographic Principle are profound. First and foremost, it suggests a deep connection between gravity and quantum mechanics, two fundamental pillars of modern physics that have been notoriously difficult to reconcile. The holographic duality provides a framework to study strongly interacting quantum systems in terms of gravity, enabling insights into the nature of black holes, the behavior of matter in extreme conditions, and other phenomena that are challenging to analyze using traditional methods.
The Holographic Principle also has potential implications for our understanding of black holes. It proposes that the information that falls into a black hole is not destroyed, as suggested by the Hawking radiation phenomenon, but rather encoded on its event horizon. This idea, known as the "holographic encoding of information," has stirred intense debates and ongoing research in the field of black hole information paradox.
Furthermore, the Holographic Principle challenges our traditional notions of spacetime. It suggests that spacetime, as we perceive it, might emerge as an approximation or an emergent property from a more fundamental description involving quantum information. This notion aligns with the concept of "entanglement entropy," which measures the entanglement between quantum states and has been linked to the geometry of spacetime.
The potential revolutionary impact of the Holographic Principle lies in its potential to provide a unified framework for understanding quantum gravity and resolving long-standing mysteries in theoretical physics. It opens new avenues for studying the nature of black holes, the behavior of matter in extreme conditions, and the fundamental structure of the universe. However, it is important to note that the Holographic Principle is still an area of active research, and many aspects of its implications and applications continue to be explored and refined by physicists.
There are two groups of waves with the same amplitude. One contains waves of short wavelength and the other has waves of long wave-length, Which waves have the most energy?
Answers
short wavelength
Explanation:- wavelength is directly proportional to frequency short wavelength have higher frequency & long wavelength have lower frequency a higher frequency wave have more energy than a lower frequency wave with same amplitudeI HOPE THAT THIS ANSWER HELPS YOUplease fill in the blank
Answers
Answer:
I'm not going equal ieu heya
Rahim is watching his favorite football team on television. In order to work, the television must be plugged into an electrical outlet. When the television gets turned on, what is the main energy transformation demonstrated by the television?? heres the answer choices A. heat energy into electrical energy
B. electrical energy into heat energy
C. electrical energy into light energy
D. light energy into electrical energy
Answers
C.) electrical energy into light energy
Explanation;
The television produces light energy by transforming electrical energy into light energy. Light energy comes from the vibration of electrically charged particles.
Hope this helps :)
What are the forces and direction of the forces acting on the egg as it falls?
Answers
Answer:
GRAVITATIONAL FORCE AIR RESISTENCE
Explanation: