please help me eseghgtrhj

Answers

Answer 1

The correct answer is C.

Related Questions

How does freezing and evaporation affect salinity?

Choose ALL that apply

Select 3 correct answer(s)
Question 1 options:

When that water melts in the spring, the salinity decreases.

none of the choices

When ocean water evaporates, the salinity increases.

When ocean water freezes, the salinity of water increases.

Answers

The answer is C, because the water molecules are evaporating and the salt molecules are staying the same.

How are both electromagnetic and mechanical waves used when people communicate with each other?

Answers

Unlike mechanical waves, which require matter, electromagnetic waves can travel through empty space, as well as through liquids, solids, and gases. There are many similarities between light waves and mechanical waves. They can both be measured by their amplitude, wavelength, and frequency.

Electromagnetic and mechanical waves used when people communicate with each other, this done by an antenna(sender & receiver)

What is antenna ?

An antenna is a metallic structure that produce or/and receives electromagnetic waves it is available in different shapes. There are different types of antennas which are Short Dipole antenna, Dipole antenna, Loop antenna, Monopole antenna.

when input of the Dipole antenna is connected to the electric signals having certain frequency. Due to change in the electric signal, there is fluctuation in polarity of dipoles in dipole antenna and that change in the dipole produces electromagnetic wave.

when electromagnetic wave is received by the dipole antenna, dipoles in the antenna get affected by electromagnetic waves, dipoles fluctuate at frequency of received electric signals and produces electric signals of same frequency as electromagnetic wave.

Sound wave is mechanical wave. sound wave is converted in electric signals by using microphone, it gets amplified and given to to input of the antenna(Transmitter). This antenna converts Electric signal into electromagnetic wave. This converted electromagnetic wave is received by another antenna(receiver). this antenna converts electromagnetic wave into electric signals, this signals are amplified and given it to the speaker.

Hence this is how people use electromagnetic and mechanical waves for communication.

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Observe: Click Reset. Select Lights on and turn off Show rulers. Select Longitudinal waves. Check that the Amplitude is 10.0 cm, the Frequency is 1.00 Hz, and the Tension is 2.0 N. Set the Density to 1.0 kg/m, and click Play.
What is the motion of the hand?

Turn the lights off. What is the motion of the green dot?

Follow the motion of a single compression of the wave. How does the compression move?

Answers

Answer:

1 The hand is moving at a steady up and down motion.

2 The green dot is moving in a trait up and down motion

3 It is moving in a waving and calming motion

Explanation:

What is the average kinetic energy of an object's particles?

Question 3 options:

Heat

Thermal Energy

Thermodynamics

Temperature

please include explanation

Answers

What is the average kinetic energy of an object's particles?

the answer is temperature

The answer is Temperature!

Which factors affect the gravitational force between objects? Check all that apply.

difference in speed of objects
direction of movement of objects
distance between objects
masses of the objects
volumes of the objects

Answers

Answer:

difference between objects, volumes of objects, masses of objects

Explanation:

i think thats it

Answer:

Which factors affect the gravitational force between objects? Check all that apply.

difference in speed of objects ---- wrong

direction of movement of objects ----- wrong

distance between objects ---- correct

masses of the objects ---------- correct

volumes of the objects --- wrong

Explanation:

i risked my grade for this an hopefully people finds this helpful

PLEASE HELP!!!!
An object with a weight of 42 N is placed in a pool. The object displaces 37 N of water. The object will:
a) sink
b) be buoyed up
c) stay in place

Answers

I would say A Because it weighs more than the water

John throws a baseball from a standing position. Which of the three possible paths will the ball follow?

Path A
Path B
Path C

Answers

Answer: C

Explanation:

Bro this is common sense. Throw something across the room and watch it. It isnt going to be repulsed and fly up. It also isnt going to continue on forever. It will clearly fall and hit the ground

C because i said so .

Which component of a galaxy is found in the space between the stars and gives the appearance of bright, colorful clouds?(2 points)
1. Clouds
2. Gas
3. Object
4. Star

Answers

Answer:

stars

Explanation:

Answer: 4: stars

Explanation:

Scientists discovered how to use x-rays over 100 years ago. They found that x-rays
could pass through soft parts of the human body but were stopped by hard body
parts. How do doctors use x-rays today?
A.to find injuries
B.to cure diseases
C.to prevent illnesses
D.to protect body parts

Answers

A - to find injuries

A is the answer , bc doctors use it to look for any broken parts of the body or any damage parts

What is a main difference between Mars and Saturn?

1. Mars has a relatively longer distance from the sun and many more moons than Saturn.
2. Mars has a relatively shorter year and a higher atmospheric temperature than Saturn.
3. Saturn has many more rings and a relatively higher atmospheric temperature than Mars.
4. Saturn has many more rings and a relatively shorter year than Mars.

Answers

Answer:

Explanation:

mars has a shorter year because when it revolves around the sun, it takes less time than, saturn who is millions of miles away from mars, longer. Also, mars is closer to the sun than saturn

The main difference between Mars and Saturn is Mars has a relatively shorter year and a higher atmospheric temperature than Saturn. Hence B option is correct.

What is Mars ?

One of our solar system's most studied planets is Mars. Mars is the fourth planet from the sun and features two peculiar moons in addition to a distinctive rusty red look.

Inside our solar system, there is a frigid, arid planet called the Red Planet. While it has a relatively thin atmosphere, the dusty, (as far as we can tell) dead planet is everything from boring.

Extreme dust storms may cover the whole planet, the atmosphere's carbon dioxide can get so frigid that it turns straight into snow or ice, and marsquakes—a Mars-version of earthquakes—regularly rumble the surface. Consequently, it is not surprising that scientists are still fascinated by this little red pebble.

Hence option B is correct.

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Mike is doing a project for science class. He is making an analogy of a cell and relating it to the structure and function of a city. He is looking for a building to represent the mitochondria. Which building in a city has a similar function and would best represent the role of the mitochondria in the cell?

Answers

Answer: Mitochondria are organelles that make energy for a cell; they are inherited from ... In this chapter, we will look at the structure and function of the eukaryotic cell. ... to functions of a city to emphasize that all parts are needed. ... We begin by looking at ... cell, as he peered through a primitive microscope of his own construction.

You should have drawn the coaster following a straight line after it slipped off the track. Since that is the path it would take without the track, there must be an unbalanced force causing it to accelerate (turn) around the bend. What direction is that force pointing? Draw a top-view sketch of the force vectors below.

Answers

Answer:

uhhh... cool story bro?

Explanation:

Apple juice in a bottle has a volume of 475 cubic centimeters and a mass of 494 grams .Calculate its destiny

Answers

Oakoqmsoqpslqpwpwpw I honestly don’t know why is y’all middle school so difficult

A biologist studied the trees in a nature preserve. She found that there were 4 different types of trees—pine, pecan, maple, and oak. The table below shows how many of each type of tree she found. Which circle graph is correct for the data in the table?

Answers

The fourth chart is the correct one.

Here I made a video for u explaining hope this helps

Based on Newton’s 3rd Law of motion, if an archer shoots an arrow at the target, the action force is the bowstring against the arrow. Explain where the reaction force can be found.

Answers

Answer: the reaction force is the arrows push against the bow sting

Explanation:the two objects must react the same , bowstring and arrow.

If you were an engineer of an actual roller coaster, what information would you need to know to ensure that your coaster would be safe?

Answers

To ensure the roller coaster is 100% safe you would have to make sure that the acceleration is a a good force so it can be safe and you have to know how to uses the forces correctly like for example a big change in speed or direction it will make a bigger acceleration and a slower speed or a small change in direction would be a smaller acceleration.

Look in the comments. I d a r e y o u

Answers

Answer:

Where is the comments??

Explanation:

Answer:

Explanation:

The pressure on an iceberg is greatest at the top of the iceberg. Question 2 options: True False

Answers

Answer:

false

Explanation:

False. The pressure at the bottom points of the iceberg is greater pressure than the top of the iceberg

The table below shows the characteristics of three components of the solar system labeled A, B, and C. Which choice identifies the components in the correct order?

A Made of ice, rocks, gas, and dust
Revolves around a star
Has a tail of dust and gas

B Revolves around a star
Smaller than a plane
revolves around a star

C Revolves around a star
Rotates on its axis
large body of rock or gas

1. Comet, asteroid, planet

2. Comet, planet, star

3. Planet, asteroid, moon

4. Star, planet, comet

Answers

It’s going to be number 1 one

Answer:

Explanation:

The most thrilling roller coasters usually contain vertical loops. What keeps the riders in their seats when they go upside-down?

Answers

The thing that goes over your head and basically holds you down so you don’t fall out

Why are there variations of traits within a population?

Answers

Answer:

The variation and distribution of traits in a population depend on genetic and environmental factors. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis.

Explanation:

Hope this helps!

Answer:

Explanation:

The gravity of Earth is attracting a person towards the center with 500N of gravitational force. The person is exerting a reactionary force on the Earth with how much force? Explain your thinking behind this.

Answers

Answer:

500n

Explanation:

Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.

The transfer of heat between objects that are touching is called what?

Question 5 options:

Conduction

Convection

Radiation

Relativity

please include explanation

Answers

Answer:

conduction if i hold a hot cup the cup is giving heat which comes in contact with my hands warming my hands

Conduction is heat transfer between two objects that are touching each other. When two objects touch and one has a higher temperature than the other; heat is transferred to the object with the lower temperature. When you touch something hot it feels hot because heat is being transferred from the object to your hand.

Which object has the most Kinetic Energy, and why?
A giant rock slowly rolling down a hill
A giant rock quickly rolling down a hill
A small rock slowly rolling down a hill
A small rock quickly rolling down a hill
I MOST IMPORTANTLY NEED AN EXPLANATION

Answers

A small rock quickly rolling down a hill because as the velocity or speed increases the particles in the rock start to increase kinetic energy. The particles start to act up and create more energy. Also because the small rock would go faster than a giant rock because of Newton's second law. Can I have brainliest pls?

Answer:A giant rock quickly rolling down a hill can I have brainlis?

Explanation:

Rice in a bowl has a volume of 84 cubic centimeters and a mass of 63 grams . Calculate its destiny

Answers

Answer:

0.75

Explanation:

Answer:

0.75

Explanation:

Help me please it’s urgent

Answers

Answer:

I Think A But Im Not Sure About It

the correct answer is A

What is the best explanation for seasons?
1 point
A. The Sun orbits the Earth
B. The Earth spins once a day, causing day and night
C. The Earth is tilted, causing the incoming sun's rays to hit the rounded surface of the Earth at different angles in opposite hemispheres.
D. The Earth is father away from the Sun at times and closed at other times.

Answers

C is the correct answer! Trust me i promise lol

I believe the answer for this question is C.

the purpose of a nuclear power plant is to transform nuclear energy to electricity. this is done in steps starting with a nuclear reaction which generates heat to produce steam. the steam in turn is used to turn a generator which finally produces electricity. which answer best illustrates these energy transformation.

A. nuclear --> mechanical --> chemical --> electrical
B. thermal --> nuclear --> mechanical --> electrical
C. mechanical --> thermal --> nuclear ->electrical
D. nuclear --> thermal --> mechanical --> electrical

Answers

it's D, nuclear to thermal to mechanical to electrical

Energy order is nuclear --> thermal --> mechanical --> electrical.

What is thermal energy?

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process.

Mechanical energy, also known as kinetic energy or potential energy, is the energy that an object possesses when it is in motion or the energy that an object stores due to its position. Renewable energy is also fueled by mechanical energy.

Energy order is nuclear --> thermal --> mechanical --> electrical.

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HElP thank you pLeAsE

Answers

Answer:

Cell membrane

Explanation:

I've done this before

Which of the following metals is most reactive?

A. aluminum

B. sodium

C. copper

D. calcium

Answers

Answer:

A. aluminum

Explanation:

Aluminium is soft, lightweight and ductile with excellent thermal and electrical conductivity. It is highly reactive, though the metal is protected by a surface layer of inert transparent oxide (Al2O3) that forms rapidly in air, providing excellent corrosion resistance.

a aluminum because sodium isnt really one so cross that out calcium cross that out copper nah but aluminum yes

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