Physics Middle School

For numbers 2 and 3, which one is compression and which one is rarefaction?

Answers

Answer 1

Compression is above the equilibrium and rarefaction is below

Related Questions

Out of aluminum,copper,steel,and glass.Which material do you think will be the best thermal conductor?

Answers

I believe it is copper

what does cleaning bleach and carbon monoxide have in common

Answers

BOTH CHEMICALS ARE VERY HARMFUL TO THE ENVIRONMENT. BOTH CHEMICALS ARE HARMFUL TO HUMANS AND IN SOME CASES FATAL. THESE CHEMICALS ARE COMMONLY FOUND IN OR NEAR EVERY HOUSE IN AMERICA SEEING THE CO COMES FROM OUR CARS AND TRUCKS, AND BLEACH IS ONE OF THE MOST COMMON CLEANING AGENTS USED AND CA BE FOUND IN ALMOST EVERY STORE.

Answer:

Both chemicals are very harmful to the environment. They are also very harmful to human and can be very fatal. These two chemicals ae commonly found in every home.

Explanation:

easy

what measurement changes based on the strength of gravitational force?

Answers

The weight of an object is the strength of the gravitational force on it.
So if the gravitational force changes, the object's weight changes.

PLEASE HELP ASAP!!!!!
What type of climate is most likely expected in locations between the poles and the equator that have high amounts of water vapor in the air?

Dry
Low humidity
No rain
Seasonal storms

Answers

Seasonal rainstorms because there is a lot of water vapor in the air causing it to always be moist.

Answer:

answer D

Explanation:

why you ask because its asking you the water vapor

and asking you the amount of water im confused a bit i hope it helps

a plane travels 2.5 km at an angle of 35 degrees to the ground and then changes Direction and travels 5.2 km and an angle of 22 degrees to the ground what is the magnitude and direction of the Plains total displacement

Answers

We can solve for the resultant x and y components by using the sine and cosine functions.

resultant x = 2.5 cos 35 + 5.2 cos 22 = 6.87 km

resultant y = 2.5 sin 35 + 5.2 sin 22 = 3.38 km

The resultant displacement is calculated using hypotenuse equation:

displacement = sqrt (6.87^2 + 3.38^2)

displacement = 7.66 km

The resultant angle is:

θ = tan^-1 (3.38 / 6.87)

θ = 26.20°

Therefore the magnitude and direction is:

7.66 km, 26.20° to the ground

Is it possible for you to take a hike and have the distance you cover be equal to the magnitude of your displacement?

Answers

Distance can be equal to displacement ... if the motion is all in a straight line ... but distance can never be greater than displacement.

Yes, it is possible that the distance can be equal to the displacement. a further explanation is given below.

A intervals metric that is taken somewhere across a track could be determined as the Distance, and the measurement of just a specific duration or short timeframe could be considered as a Displacement.Whenever you walk down the road throughout the one manner, the distance, as well as the size of the whole movement, become equivalent or comparable.

Thus the above answer is right.

Learn more about distance and displacement here:

https://brainly.com/question/13210415

A meter stick flies by with an apparent length of 60 cm. What is it's velocity in m/s? Not sure which formula to use

Answers

Solution:

Starting with g equal to (1/0.6), solve for v.

v = 0.8c = 2.4E8 m/s

Starting with g equal to (1/0.6), solve for v.

Both artists and scientists contribute to our understanding of the world around us. Identify the ways that art and science are similar. Check all that apply.

Answers

What are the options to choose from?

Answer:

the answer to this would have to be 1,2 and 4

Explanation:

i just did it

Which of the following cools the air in a household refrigerator

Answers

There are no choices but the answer willbe mostly for the liquids

Liquids I think hope that helps

Which of these uses the principle of superposition of rocks to compare the age of fossils?
A. Carbon half-life
B. Radioactive dating
C. Relative dating
D. Uranium half-life

Answers

The answer is C. relative dating I think

Answer 1-8 please
Thanks

Answers

The answers are as follows:
1. B.
A typical atom is made up of three different particles, which are electron, proton and neutron. The proton and the neutron are located inside the nucleus of the atom while the electron orbit round the nucleus.
2. C
The number of proton in an atom determines the atomic number of that atom. Atom are positively charged particles and they do no participate in chemical reactions. The number of proton of an element remain constant at all time while the number of neutrons and the electrons in the atom may change.
3. B.
The first periodic table was created by Dmitri. He arranged the periodic table in such a way that, elements with similar properties fall into the same column in his periodic table. This was because, he arranged the periodic table on the basis of their physical and chemical properties.
4. A
The elements in the periodic table are arranged in horizontal row and vertical column. The column on the periodic table divides the elements into groups.
A row of element on the periodic table is called PERIOD. For elements on the same period, they have the same number of atomic orbitals.
5. A
Chemical symbol refers to the one or two letters which are used to represent a particular element. Chemical symbols are derived in a variety of ways. The chemical symbols make it possible for one to recognize an element quickly and to write it in an abbreviated form when writing chemical equations.
6. A.
An object is said to be ductile if it can be pulled into a long wire. It refers to an element's capacity to be pulled into a thin wire without the element been deformed. This is one of the properties of metals. Ductability makes it easier for one to work with a metal.
7. C
When metals atoms react with other atoms, the metal atoms lose electrons, this is because, metals usually have a low number of electrons in their outermost shells, which they always preferred to donate in order to achieve octet form.
8. B
Particle accelerator is a machine that accelerate elementary particles to very high energies, thus producing beam of charged particles which can be used for a lot of different purposes.

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?

Answers

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?

[tex]F = ma F = 4.5 x 9[/tex]

40.5 N

f=ma
f=4.5*9

40.5 N
hope this help

Looking at this skier. If ht travels from point A to point B, then turns around and stops at point C, what is her total displacement?

A:180 m
B:320 m
C:100 m
D:40 m

Answers

D. I just answered that question for someone else

D. 40 m is the correct answer

which have more kinetic energy a 100g ball,a 200g ball, or a 500g ball explain

Answers

Answer:

500g ball have more kinetic energy.

Explanation:

Due to mass is directly proportional to kinetic energy.

why did dalton devise his own element symbols

Answers

__1803: __English chemist-physicist John Dalton starts using symbols to represent the atoms of different elements.

Final answer:

John Dalton created his own element symbols to visually represent the atoms and their combinations as part of his atomic theory. These symbols were crucial for the systematization of chemistry and preceded other symbol systems such as those of G. N. Lewis, which illustrate valence electrons and chemical bonding.

Explanation:

John Dalton, an English scientist, devised his own element symbols as part of his pioneering work in atomic theory. Dalton's atomic theory posited that elements are composed of indivisible atoms, that matter combines in fixed ratios, and that compounds always have consistent proportions. His element symbols, depicted in Dalton's book A New System of Chemical Philosophy, were an early attempt to represent these atoms and their combinations visually. These symbols laid the groundwork for the systematization of chemistry and were a precursor to later representations such as the Lewis dot symbols. Unlike Dalton's symbols, Lewis dot symbols focus on representing the valence electrons of atoms to predict chemical bonding and formation, as G. N. Lewis published in 1916.

Without Dalton's work, our understanding of the chemical composition of matter and the development of subsequent theories of chemical bonding, such as those proposed by G. N. Lewis, might have been significantly delayed. Dalton's dedication to empirical evidence and experimentation set his atomic theory apart from the philosophical ideas of ancient Greeks like Democritus and Leucippus, contributing greatly to the advancement of modern science and chemistry.

how do I figure out the GPE of an object on the ground? question 28.

Answers

In this scenario, only conservative force is acting on the ice-cream hence energy is conserved.
Now, you know that ice-cream was held at a height of 1.75 m from ground. Taking ground( h= 0 meters) as reference,

Total energy of ice-cream before it fell = Total energy after it reached the ground.

Once ice-cream falls, all its GPE is converted into kinetic energy. Kinetic energy will be maximum just before it hits the ground. And since ice-cream is inelastic substance, it will come to at rest. That is, its GPE will be zero on the ground

Describe what would happen if, while wearing rollerskates, you pushed as hard as you could against a wall. Why does this happen?

Answers

You would roll backwards. This is because the wall is stationary while with you having the roller skates on makes you unstationary. The force you put on the wall does nothing to the wall but instead goes back to push you. Again this is because the wall is stationary and is not going anywhere.

If you were wearing roller skates and pushed as hard as you could against a wall you would be slung backwards. This happens from you pushing yourself & from gravity .

suppose a ball has a potential energy of 5 J when you dropped it. What would be its kinetic energy just as it hit the ground?

Answers

As an object falls from rest, its gravitational energy is converted to kinetic energy. Kinetic energy in Joule would be equal to its initial potential energy.

P.E = K.E = 5 J

Answer:

10 J

Explanation:

Help me please

True or false

1) an atom has no mass

2) an electron is the largest part of an atom

3) all atoms have the same mass

4) all protons have the same mass

5) all oxygen atoms have the same mass

6) an oxygen atom has the same atomic number as a hydrogen atom

7) to find the atom mass of an atom, we add the protons an electrons

8) the atomic number of an atom is the number of neutrons it has

9) atoms of the same kind that have different numbers of neutrons are called isotopes

10) atomic number = atomic mass

Answers

1. False
2.False
3.False
4.True
5. True
6. False
7.True
8.False
9. True
10. False

#4 and #9 are true.
#10 is true IF it's an atom of Hydrogen.
The other 7 statements are false.

Which of the following is not an intensive physical property?

Electrical conductivity

Mass

Density

Freezing point

Answers

Answer:

Below

Explanation:

Electrical conductivity (I believe)

On a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water at 1.5s later. Ignore air resistance. What is the height of the bridge?
I did it but I don’t know if it’s right

Answers

The only equation you need is the Δy = v₀t + 1/2at², and in this case, v₀t = 0 because the swimmers are starting from rest. Therefore, Δy = 1/2at², and that is 1/2 x (10m/s²) x (1.5)² = 11.25m.
With sigfigs it is 11m.

When on a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water 1.5 seconds later. Ignore air resistance, then the height of the bridge would be 11.03 meters.

What are the three equations of motion?

There are three equations of motion given by Newton,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem, when on a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water 1.5 seconds later. Ignore air resistance,

By using the Second equation of motion,

S = ut + 1/2×a×t²

S = 0 + 0.5*9.81*1.5²

S = 11.03 meters

Thus, the height of the bridge would be 11.03 meters.

To learn more about equations of motion here, refer to the link;

brainly.com/question/5955789

#SPJ2

Does the sun give plants the nutrients to grow yes or no!!!

Answers

Your is going to be yes.

Answer:

yes it is

Explanation:

thankyou ii really need these points

What best describes the goals of scientific investigation and technological development?

Answers

Scientific investigation aims to advance knowledge of the world around us so as to encourage technological development with the intended purpose of finding cures for disease, protecting natural resources, and enhancing human's productivity in all areas.

Answer:

D. Scientific investigation aims to design and implement an experiment to learn new information, whereas technological development aims to design a product to solve a problem.

Explanation:

Which is the largest and the main artery of the circulatory system

Answers

Pulmonary The main artery of the human circulatory system is called the aorta. It comes directly off of the heart, carrying oxygenated blood to other arteries that carry it to… the body's cells. About the thickness of your thumb, it is also the largest artery.

Plz mark brainliest! Have an awesome day!

I would say the pulmonary artery is the largest and the main artery. It carries oxygen-poor blood.

besides mass , another factor that affects force

Answers

I would say direction because force needs to be directed

Force, mass, & acceleration are needed in the equation

so your answer is acceleration

hope this helps

Scientist make inferences about the structure and properties of the inner earth by __________

A) studying volcanoes
B) boring into the earth to explore for oil
C) analyzing seismic waves
D) monitoring ocean tides

Answers

I think it's A most likely

Choose correct answer

Answers

C is the correct answer urwelcom

Answer: The answer would be the primary purpose is to construct a logical argument.

A testable idea or explanation that leads to a scientific investigation is called a what

Answers

A testable idea or explanation that leads to a scientific investigation is called a hypothesis.

The answer is Hypothesis.

The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.1 years?

Answers

263.1 is exactly three half-life, so the remaining portion is (1/2 x 1/2 x 1/2) of the original sample. That's 1/8 which is 12.5% .

Answer:

12.5

87.5

Explanation:

list two food chains in the food web.

Answers

Grass-Rabbit-Snake-Hawk
tree-deer-Mountain lion
hope this helps

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