Why do electromagnetic waves not require a medium for travel?A) because electromagnetic waves travel too fast for stationary particles to move with them
B) because electromagnetic waves transmit energy without compressing the particles of the medium
C) because electromagnetic waves generate their own particles for compression and use these for movement
D) because electromagnetic waves move in two-dimensional space, the particles of mediums exist in 3-D space

Answers

Answer 1

Answer: The answer is B) because electromagnetic waves transmit energy without compressing the particles of the medium. Electromagnetic waves are not like mechanical waves (ex. sound waves) because they do not need a medium to propagate. Electromagnetic waves continuously propagates as electric fields and magnetic fields generate each other.

Answer 2

Answer:

Answer:

B) because electromagnetic waves transmit energy without compressing the particles of the medium

Explanation:

Electromagnetic waves are the combination of electric and magnetic field which will oscillate perpendicular to each other. And the propagation of wave here is perpendicular to both electric and magnetic field.

So here in this type of wave propagation we do not require any medium as this is propagation of electric and magnetic field.

So here no need of compression or rarefaction of medium molecules and hence it do not need any medium to travel

so here correct answer is

B) because electromagnetic waves transmit energy without compressing the particles of the medium

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Streams of electrically charged particles flowing at high speeds from the sun make up the

Answers

That's the so-called 'solar wind'.

As a liquid is added to a beaker, the pressure exerted by the liquid on the bottomof the beaker
A decreases
B stays the same
C increases

Answers

Answer: c) increases

Explanation:

Pressure increases with decreasing height

Forces of attraction limit the motion of particles most inA. a solid.
B. a liquid.
C. a gas.
D. both b and c

Answers

Answer:

Solids

Explanation:

Solids have definite shapes and definite volumes. The forces of attraction between the molecules of a solid substance are strong and the intermolecular spaces are very small. Due to this, the motion of molecules within a solid substance are very difficult that they only vibrate in their positions.

For liquids, they have definite volumes and indefinite shapes. The forces of attraction between the molecules of a liquid are intermediate and the the intermolecular spaces are intermediate as well. Due to this, the motion of molecules within a liquid substance is not as difficult as it is within solids.

Finally, for gases, they have indefinite shapes and indefinite volumes. The forces of attraction between the molecules of a gas are weak and the intermolecular spaces are large. Due to this, the motion of particles of gas is very easy.

Hope this helps :)

Final answer:

The forces of attraction limit the motion of particles most significantly in solids because particles in a solid are closely packed and have stronger forces of attraction, which hold them tightly in fixed positions.

Explanation:

The forces of attraction between particles limit motion most significantly in a solid (Option A). In a solid, particles are closely packed together and have the least amount of freedom to move, compared to particles in a liquid or gas. This is because the forces of attraction in a solid are very strong, holding particles tightly in fixed positions. In contrast, particles in liquids and gases have more freedom to move as the forces of attraction are weaker.

However, this does not mean that particles in a liquid or gas do not experience forces of attraction. They do, but the forces are weaker in comparison to solids, allowing for more movement. Hence, solids are the state of matter in which forces of attraction limit the motion of particles most.

Learn more about Forces of Attraction here:

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A DUI conviction not only affects the driver involved but also his or her ___________A. friends.
b. family.
c. Both A and B

Answers

Answer: option C

Explanation:

A DUI (driving while under the influence of alcohol or drugs) conviction means that a person has been found guilty, of either DUI or has been found guilty of driving with a 0.8% or more blood alcohol concentration. If a person is found guilty, the DUI conviction will remain on record of driving for 75 years. A DUI conviction not only affects the driver and his/her personal relationships. Conviction can also lead to imprisonment, which will also have a negative effect on family and friends.

Your answer would be both A and B, so c.

If Sarah melts 10g of tin. What mass of melted tin would she have at the end of the experiment?

Answers

Answer:

10g

Explanation:

The experiment is about melting of tin. When solid tin is melted, it retains the amount of substance it originally has and we expect it to still be 10g.

Mass is the quantity or amount of matter contained in a substance. For most chemical processes, the law of conservation of matter is always succinctly observed.

The law states that "matter is neither created nor destroyed in a chemical reaction or process". Although melting is a phase change, we can adapt this law to the process. Owning to no loss of matter in the melting procedure, the amount of substance remains the same.

Therefore, we are left with about the same mass of substance we started with which is 10g.

Answer:

10g

Explanation:

As the Law of Conservation of Mass states that " Mass can neither be created nor be destroyed in a chemical reaction".

Though melting of tin isn't a chemical change, the same logic is applied here...

Hence,

The mass of tin will be 10 g itself...

The basic building block of life is

Answers

The basic building block of life is molecules, more specifically macromolecules. There are four different macromolecules which could all be described as the building blocks of life, namely carbohydrates, proteins, nucleic acids and proteins.

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