Answer: B:)
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1.Compare how waves are used to send information.
2. Describe methods of communication.
3. Identify modern methods of communication.
Answer:
1:Radio waves are used to carry satellite signals. These waves travel at 300,000 km/s (the speed of light).
2:The standard methods of communication are speaking or writing by a sender and listening or reading the receiver. Most communication is oral, with one party speaking and others listening. ... A mixed message occurs when a person's words communicate one message, while nonverbally, he or she is communicating something else.
3: Today means of communication has increased such a lot that we can receive or send messages from or to far off places. Various means of communication which we use in the modern world are Posts and Telegraphs, Telephone, Radio and Television, Telex, Fax, Pagers, Email, Newspapers and cinema.
How does Earth's gravity affect the motion of the moon and satellites
Answer: well it keeps the international space station in orbits around the earth and gravity keeps the moon keep orbiting the earth
Explanation:
How did the iron filing patterns show attractive forces between magnetic poles?
When the magnet is placed on the glass, it is attracted to the iron filings. The pattern of the iron filings shows that the lines of force that make up the magnetic field of the magnet. Also, The lines of force of north and south poles attract each other whereas those of two north poles fend off each other.
Answer:
When the magnet was placed on the glass, it attracted the iron filings. The pattern of the iron filings shows the lines of force that make up the magnetic field of the magnet. ... The lines of force of north and south poles attract each other whereas those of two north poles repel each other.
Explanation:
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Objects too far away from the Sun do not orbit it. Explain why this occurs.
Answer:
The Sun's gravitational pull is not as strong as objects get farther away
Explanation:
Answer:
The answer would probably be gravitational pull
Explanation:
The farther an object is from the sun and the slower it will orbit the sun. If an object is closer from an other star than to the sun, or the field of attraction of this star is stronger than the one of the sun, this object will not orbit the sun at all.
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An ice cube melting into water is an example of: options:
A. physical change
B. nuclear change
C. chemical change
QUESTION 2
Non-metals are found where on the periodic table?
A. Everywhere
B. Center
C. Lower left side
D. Upper right side
A. physical
D. Upper right
Answer:
1.) A, a physical change
2.) D, Upper right side
Explanation:
1.) Changing states does not atomically change the chemical build up of any object. Water is still water whether as liquid H2O, ice, or water vapor. Since it is only changing how an object looks and not the chemically make up, melting and freezing constitutes as physical changes
2.) Non-metals are elements that do no share the traits and characteristics of a metal. Most non-metals classify as a gas. This includes : helium, hydrogen, oxygen, carbon, nitrogen, and sulfur just to name a few.
Where are all these elements found on the table? The right sides of the periodic table.
What property describes the ability of a material to be flattened into thin sheets by hammering? options:
A. flammability
B. boiling point
C. ductility
D. malleability
Answer:
d. malleability
Explanation:
i think
WITHOUT FRICTION, what happens to the skater if you release him from a height ABOVE the track?
PLEASE go to the simulation to try this out!
Answer:
B, he will fly off the other end
Explanation:
there is too much potential energy that transforms into kinetic energy for him to stay on the track.
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What is being compared in the simile from this excerpt?
Answers:
A. Alice is comparing the idea of finding a creature with her name to a missing dog poster.
B. Alice is comparing the wood where things have no names to the woods from her old world.
C. Alice is comparing losing her old name to gaining her new name.
D. Alice is comparing having a nice name to having an ugly name.
Answer:
b
Explanation:
help please fill in the blank
When you look at the Sun through a filtered telescope, the visible portion of the Sun appears blotchy.
These blotches are called (BLANK)
. The layer of the Sun where these occur is called the (BLANK)
.
Answer:
sunspots; photosphere
Explanation:
The nucleus is found in the center of an atom options: True False
what is santa's average speed when visiting houses if he visits 800 million houses over 48 hours?
Well, "speed" normally = (total distance covered) / (time to cover the distance).
In this case, we don't know the total distance that Santa has traveled, so the question can be answered only if we're willing to consider some other meaning of "speed".
Maybe we could say that in this case, "speed" means the average rate at which he visits houses. Then ...
Speed of visits = (total houses visited) / (time to visit them).
Speed of visits = (800 million houses) / (48 hours)
Speed of visits = 16.67 million houses per hour.
That's 277.8 thousand houses per minute
That's 4,630 houses per second
you observed that a solar powered toy moved when you shines a flashlight on it select all of the statement below that accurately explain how this happened
light from the flashlight carried energy.
there was energy in the toy that was activated by the light
energy from the flashlight was absorbed by the toy
the flashlight absorbed energy from the toy.
I believe it's light from the flashlight carried energy, and
there was energy in the toy that was activated by the light
A solar powered toy moved when you shines a flashlight on it. this is explained by:
light from the flashlight carried energy.energy from the flashlight was absorbed by the toy.What is solar energy?Solar energy is the radiation that the Sun emits that has the ability to create heat, trigger chemical reactions, or create electricity. The total solar energy incident on Earth is far greater than the global energy needs at the moment and in the future. This highly diffused source might potentially provide all of the energy required in the future if properly harnessed.
As the solar powered toy moved when you shines a flashlight on it, it absorbed the energy from the flashlight and light from the flashlight carried energy.
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Read this excerpt from Through the Looking-Glass by Lewis Carroll.
“That would never do, I'm sure,” said Alice: “the governess would never think of excusing me lessons for that. If she couldn't remember my name, she'd call me ‘Miss!’ as the servants do.”
“Well, if she said ‘Miss,’ and didn't say anything more,” the Gnat remarked, “of course you'd miss your lessons. That's a joke. I wish YOU had made it.”
“Why do you wish I had made it?” Alice asked. “It's a very bad one.”
But the Gnat only sighed deeply, while two large tears came rolling down its cheeks.
“You shouldn't make jokes,” Alice said, “if it makes you so unhappy.”
Then came another of those melancholy little sighs, and this time the poor Gnat really seemed to have sighed itself away, for, when Alice looked up, there was nothing whatever to be seen on the twig, and, as she was getting quite chilly with sitting still so long, she got up and walked on.
Question:
How does Lewis Carroll’s use of opposites appear in this excerpt?
Answers:
1#. Alice says that her governess would never excuse her from her lessons, even if she 2#. did not have a name.
3#. The gnat jokes that Alice would have to miss her lessons if the governess called her “Miss.”
4#. The gnat makes jokes, but they seem to cause him unhappiness rather than joy.
5#. The gnat disappears after he lets out one last sigh and Alice looks up at the tree.
Answer:
4
Explanation:
Answer:
D
Explanation:
how far can i throw a child in a walmart
Use the following table of a school bus during morning pickups to calculate its average speed between 0h and 2.34h.
hint from my teacher: use the equation for average speed
Answer:
Hi there, this image is your answer
PLEASE HELP ME ASAP!!! THIS IS DUE IN 20 MINUTES!! Tell if Rusting (Oxidation) is a Physical or Chemical Change. Also, explain what it means and give an example.
I WILL GIVE BRAINLIEST TO THE BEST ANSWER!!!
Redox reaction is the oxidation of iron, which forms iron oxide, also known as rust. This reaction can be symbolized with the following equation: 2Fe + 3O2 forms Fe2O3. Notice the iron atoms and oxygen molecules combine to form a new compound, which makes this reaction a chemical change.
How is the kinetic energy of the particles that make up a substance different
after it changes state?
O A. The kinetic energy is greater after a substance changes from a
plasma to a gas.
O B. The kinetic energy is greater after a substance changes from a
liquid to a solid.
O C. The kinetic energy is less after a substance changes from a liquid
to a gas.
O D. The kinetic energy is less after a substance changes from a gas to
a liquid.
Answer:
a
Explanation:
i think
Mechanical energy s the TOTAL potential energy and kinetic energy in an object. TRUE OR FALSE???
Answer:
TRUE
Explanation:
The mechanical energy of an object can be the result of its motion and/or the result of its stored energy of position.
Read this excerpt from Through the Looking-Glass by Lewis Carroll.
“This must be the wood,” she said thoughtfully to herself, “where things have no names. I wonder what'll become of MY name when I go in? I shouldn't like to lose it at all—because they'd have to give me another, and it would be almost certain to be an ugly one. But then the fun would be trying to find the creature that had got my old name! That's just like the advertisements, you know when people lose dogs—‘ANSWERS TO THE NAME OF “DASH”: HAD ON A BRASS COLLAR’—just fancy calling everything you met ‘Alice,’ till one of them answered! Only they wouldn't answer at all if they were wise.”
What is being compared in the simile from this excerpt?
ANSWERS:
A. Alice is comparing the idea of finding a creature with her name to a missing dog poster.
B. Alice is comparing the wood where things have no names to the woods from her old world.
C. Alice is comparing losing her old name to gaining her new name.
D. Alice is comparing having a nice name to having an ugly name.
Answer:
A
Explanation:
The answer is A. :)
how is mitochondria like the digestive system?
The mitochondia takes in nutrients and then breaks it down like the digestive system.
Explanation:
Using a periodic table, the symbol Ag stands for: A. Silver B. Cesium C. Potassium D.Gold RIGHT ANSWER GETS BRAINLIES
A. Silver is the answer
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ASAP HELP PLS
Amy has a mass of 30 kg, and she is riding a skateboard traveling 5 meters per second.
What is her momentum?
5 kg⋅m/s
6 kg⋅m/s
30 kg⋅m/s
150 kg⋅m/s
Answer:
A is correct
Explanation:
Momentum is the product of mass and velocity of the moving object. The momentum of Amy weighing 30 Kg riding with 5 m/s is 150 Kg m/s.
What is momentum?Momentum is a physical quantity measuring the product of mass and velocity of a body. There are both linear momentum and angular momentum. Angular momentum is the momentum associated with a rotating body.
Momentum of a body increases with increase in mass and velocity.
The mass of the girl is given 30 Kg riding with a velocity of 5 m/s. Thus her momentum can be calculated as:
p = m v
= 30 Kg × 5 m/s
= 150 kg m/s.
Therefore, the momentum of Amy is 150 Kg m/s.
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Look at this image of a star cluster.
Which type of star cluster is shown?
A .open
b .binary
c .globular
b .eclipsing
Answer:
The answer is open
Explanation:
its is open because it's a open star cluster
The type of star cluster is open. The correct option is A.
What is star cluster?Star cluster is a large group of stars which are held together by the mutual gravitational attraction. There are two types of star cluster: Open and globular.
The open star clusters have stars arranged in random manner. The globular star cluster have the stars arranged in spherical way.
Thus, the correct option is A.
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Select the ALL correct sentences on the image.
Matthew throws a ball straight up into the air. It rises for a period of time and then begins to drop. At which points in the ball’s journey will gravity be the greatest force acting on the ball?
Answer:
The ball falling down
Explanation: Because once the ball starts going down it means that the applied force on the ball is no longer higher than the gravitational force on the ball.
Answer:
when the ball reaches maximum height
Explanation:
Saturn isn’t the only planet with rings, but they are the most beautiful ones.
Fact or Opinion?
Answer:
opinion
Explanation:
i could call somthing beautiful ex. a bird but call another bird ugly
Why is the principle of periodic motion used in pendulum and quartz clocks?
[please answer fast I will mark you as the brainliest :-) ]
Answer:
A pendulum of given length always takes the same time to complete one oscillation. The time period of a pendulum of given length is constant. Thus, the periodic motion of pendulum has been used to make pendulum clocks for measuring time.
Explanation:
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A science teacher shows his students an image of a volcanic mountain range and informs them it was created by the movement of Earth’s tectonic plates. He asks his students to explain how this occurred. Which student’s explanation is best?
Student A
An oceanic plate converged with an oceanic plate. Both plates subducted, forcing lava upward towards the surface of the Earth causing a volcanic eruption which created the mountains.
Student B
A continental plate converged with a continental plate. Neither plate subducted so lava was forced upward towards the surface of the Earth causing a volcanic eruption which created the mountains.
Student C
An oceanic plate converged with a continental plate. The more dense, continental plate sank below the less dense oceanic plate causing magma to rise up through a weak spot in Earth’s crust to create volcanic mountains.
Student D
An oceanic plate converged with a continental plate. The more dense, oceanic plate sank below the less dense continental plate causing magma to rise up through a weak spot in Earth’s crust to create volcanic mountains.
A.
Student B
B.
Student A
C.
Student C
D.
Student D
Answer:
Student B
Explanation:
I think
Answer:
student b
Explanation:
2 spheres are made from the same material. One is smaller and one is larger. Is the smaller sphere made up of smaller atoms than the larger sphere?
Answer:
No
Explanation:
It’s just made up of less atoms.
Breaking a pencil in half is an example of: options:
A. nuclear change
B. physical change
C. chemical change