Physics Middle School

___________ telescopes are the cheapest and easiest to produce.
A.
Refracting
B.
Reflecting

Answers

Answer 1

Answer:

B reflecting

have a great day

Answer 2

Answer: Its B

Explanation: I just took the test

Related Questions

Please helpppp meee 20 pts
Identify the arrows that show the correct direction of heat transfer.

Answers

Answer:

The arrow pointing up from the hand and the arrow pointing diagnoly from the cup

Explanation:

That is what I THINK lmk if I'm right

Heat transfers in weird ways but it is complex i have no clue what i jus wrote but thanks fir the points luv

Uhhh-

Is radioactive atoms a type of electromagnetic radiation?

Yes or no?

Answers

Answer:

Yes :) rjhehrhrhridjrieuuririeirurhryyrur

Answer:

no

Explanation:

What's the difference between radioactivity and radiation? As we have seen, radioactive decay is a property of a particular nucleus. In comparison, radiation is a possible consequence of many processes, not just radioactivity. ... non-ionising radiation: essentially the low-energy parts of the electromagnetic spectrum.

Everyone has different strengths and abilities in sports. A. True B. False
its GYM class

Answers

Answer:

a true

Explanation:

I’m pretty sure it’s true

Please help me!
Heat always flows from a BLANK 1 place to a BLANK 2 place.
Blank 1:
higher, lower, colder, hotter
Blank 2:
higher, lower, colder, hotter

Answers

Answer:

higher hotter lower colder

Explanation:

fu89r7tuhydf8giogyi;sg;jkvjkxcgvd'tfwesgreukdflhdioyhggjbksgha

ANSWER ASAP GIVING BRAINLIEST AND OTHER STUFF!

Please answer the following with 5 or more sentences:
How does the velocity of a moving object depend on the choice of frame of reference?

Answers

Imagine you threw and caught a ball while you were on a train moving at a constant velocity past a station. To you, the ball appears to simply travel vertically up and then down under the influence of gravity. However, to an observer stood on the station platform the ball would appear to travel in a parabola, with a constant horizontal component of velocity equal to the velocity of the train. This is illustrated in Figure 1 below.

(Path of the ball as seen by an observer on the train and an observer at the station.)

The different observations occur because the two observers are in different frames of reference. A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.

The laws of physics are the same in all inertial frames (this is known as Galilean invariance). Put in another way, there is no experiment that you could do to determine which reference frame you are in (Einstein used this hypothesis to devise the theory of Special Relativity). This means that we can address problems in any reference frame to give an equivalent solution.

Facts found from https://isaacphysics.org/concepts/cp_frame_reference

Please help! No links or spam, I will report.

Answers

Answer:

Need points

Explanation:

bleh

Why is cellular respiration essential for homeostasis? (4 points)

To create energy that the cell can use

To make air in the body

To remove oxygen from tissues

To make new types of cells

Answers

1Cellular respiration supports homeostasis to maintain the stability of body. ATP is produced during cellular respiration that provides energy to perform several body functions such as muscle contraction and nerve conduction which are responsible for the maintenance of homeostasis
2. The only form of energy a cell can use is a molecule called adenosine triphosphate (ATP). Chemical energy is stored in the bonds that hold the molecule together. ADP can be recycled into ATP when more energy becomes available
3. The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.
4. The regulation of tissue oxygenation is based at the start from the ability of the respiratory system to fully oxygenate the arterial blood which the heart then delivers to the peripheral tissues. The need for different levels of respiration varies with the physiologic state of the organism (e.g., sleep, excitement, exercise). The respiratory system must try to maintain constant levels of O2, CO2 and H+ in the arterial blood which then ensures relatively constant levels of these important substances in the interstitial fluid. For O2, one needs an adequate supply to meet cellular metabolic requirements. For CO2 and H+, one needs to maintain the acid–base status of the body's cells
5. New cells are created from a process called cell division. The new cells are produced when a cell, called the mother cell, divides into new cells called daughter cells. When two daughter cells have the same number of chromosomes as the original cell, the process is called mitosis
To create energy that the cell can use hope this helped x

If you were a meteorologist, what information would you like to know to predict if a tornado were to form? Explain why that information would help you.

Answers

Explanation: Moisture, temperature, and something known as wind shear, where the wind changes in strength and direction with height.

Some populations have cooperative relationships. This is where:

A. members of the same species compete for resources
B. member of different species compete for resources
C. members of the same species work together for survival
D. members of different species work together for survival

Answers

C. Members of the same species work together for survival

Some populations have cooperative relationships. This is where members of the same species work together for survival, therefore the correct answer is option C.

What are biomes?

Biomes can be defined as regions specified by particular biological and geographical communities that evolved because of the shared regional climate of that region.

In the natural world, symbiotic partnerships can take one of three main forms: parasitism, commensalism, or mutualism. Mutual benefit: both parties win.

There are certain populations that work together. The right response is option C since this is a situation in which individuals of the same species collaborate in order to survive.

To learn more about biomes from here, refer to the link given below ;

brainly.com/question/11491362

#SPJ2

Can anyone help me plz

Answers

Answer:

B and A

Explanation:

B & A

:...,,,,,.......................

Please helppppp ASAP mark you Brainliest
1. Answer choice: (natural selection, diversity, scientific theory of evolution, genetic variation) and (environmental factors, inherited, inherited, extinct)

2. Answer choice: (national selection, diversity, environmental factors, extinct)

3. Answer choice: (national selection, genetic variation, inherited, environmental factors) and (genetic variation, extinct, diversity, inherited)

Answers

Answer:

Explanation:

The DIVERSITY explains how experimental factors both work to help populations respond the the environment over time

Whether a species has stopped existing recently or in ancient history it is still considered extinct  

genetic variation is a result of inherited factors from parent to offspring

Which of these conclusions is most likely correct about the location from where the fossil was discovered?
It was a sea which was replaced by a forest.
It was a forest which was replaced by a sea.
It is mainly covered with salt water bodies.
It is mainly covered with fresh water bodies.

Answers

It was sea which was replaced by forest

Answer:

A.

Explanation:

Millions of years ago, most of the foests we see today used to be oceans. In modern-day we find fossils in the ground from those old eras long ago, back when there were only sea creatures on earth and we find these.

In Hans Oersted’s experiment, why did a compass needle move when an electric current flowed through a nearby wire?

A. The compass conducted electricity.
B. The current created a magnetic field around the wire.
C. The compass was broken.
D. The current changed Earth’s magnetic field.

Answers

D. The current changed earths magnetic field

Answer:

B. The current created a magnetic field around the wire

Explanation:

Hans Oersted discovered the magnetic effect of the electric current. In his experiment, he discovered that when the electric current flowed through a wire a magnetic field was created and the wire acted as a magnet.

(*) Sorry for my late answer but I hope this helps others that are looking for this.

100%  in the test ;)

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

1.
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 does the relationship between the digestive system and other body system tell you about the body's need for homeostasis, that is, the ability to keep the body's internal environment stable and within normal limits?
need an answer ASAP!!!
brain list to the first answer
for 50 points

Answers

The body continuously tries to maintain homeostasis. Therefore, the digestive system eliminate waste from your body along as providing the body with the nutrients needed. It balances out your every meal.

label the three planes and axis of movement on the figures. define each plane and axis of movement and axis of movement and give an example of how it relates to dance and everyday movement.

Answers

Answer: it = kobe

Explanation

Which of these are affected by Earth’s magnetic field?

A. a magnetized needle floating in a dish of water
B. a piece of magnetite hanging from a string
C. all of the above
D. a bar magnet hanging from a string

Answers

I believe it is “C” all of the above, I hope this helps you!

All joints of this answer includes, Which means that none of these Are incorrect, In form of answer yes. But in magnet, The answer is C, All of the above.

A pendulum is constructed from a 7.58 kg bowling ball hanging on a 3.00m long rope. The ball is pulled back until the vertical height is 0.877 m. What is the potential energy of the ball?

Answers

Answer:

A 7.58

Explanation:

Oil stores ______ energy.
A Heat
B Chemical
C Mechanical
D Electrical
NO LINKS I WILL PERSONALLY SEND YOU USERNAME TO BRAINLY'S EMAIL ADDRESS!

Answers

Answer:

B. Chemical

Explanation:

The energy in fossil fuels (coal, oil, gas) is Chemical Potential Energy. Fossil fuels come from decayed living matter that has stored energy in its chemical bonds (bonds of atoms and molecules). Coal, petroleum, natural gas, and propane are examples of fossil fuels that store chemical energy.

The correct answer is b:))!!
Have a great day

Calculate the kinetic energy of a 2.2 kg brick when it has a speed of 4.9 m/s.

A.
1.2 J
B.
17 J
C.
26 J
D.
220 J

Answers

Answer:

Kinetic energy of the brick is 26.4 Joule

Explanation:

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

A parked car begins to roll down a hill, what can you conclude from that observation?
A force was required to start the car rolling.
The rolling friction is equal to the car’s weight.
The rolling friction is greater than the force of the car’s weight against the hill.
The car will stop when a force equal to the weight of the car is applied against the car.

Answers

Answer:

I think you answered that yourself

Explanation:

The needle in a compass ___________.
A. all of the above
B. keeps pointing in the same direction when you turn the compass points toward Earth’s magnetic north pole
C. is a magnet

Answers

The needle in a compass_____.The answer is A.

WILL MARK BRAINLIEST

Sancia's class is studying rocks and minerals. Sancia has found this rock on the school playground. "I think this rock is made of mostly one mineral," said Sancia's teacher.She gave Sancia the mineral chart you see here. What evidence would be of little use to Sancia? What characteristic would be most useful to her when classifying the mineral?


A) least useful - color; most useful - streak
B) least useful - hardness; most useful - color
C) least useful -streak; most useful - hardness
D) least useful - hardness; most useful - cleavage

Answers

bbbbbbbbbbbbbbbbbbbbbbbbbbbb

The unicorn suddenly ran through the school at 5.6 m/s and it has a mass of 450 kg. What is the unicorn’s kinetic energy?

Answers

Answer:

KE = 567000 J

planation:

The kinetic energy of the unicorn can be find out from its mass and velocity. The kinetic energy of unicorn is 7056 J.

What is kinetic energy ?

Kinetic energy is a form of energy on an object generated by virtue of its motion. It is related to the mass and velocity of the object by the expression written below:

Ke = 1/2 m v²

When an object starts moving from rest, its potential energy converts to kinetic energy. As the mass and velocity increases, kinetic energy increases.

Given that, m = 450 kg

v = 5.6 m/s

then , Ke = 1/2 450 kg × (5.6 m/s )² = 7056 J.

Therefore, the kinetic energy of the unicorn is 7056 J.

Find more on kinetic energy:

https://brainly.com/question/26472013

#SPJ2

What physical property could you use to identify the mineral, no matter how big a piece you found?  A) color B) density C) mass D) shape

Answers

B) Density because every single mineral has a diff density

Answer:

A and B

Explanation:

You can identify a mineral by its appearance and other properties. The color and luster describe the appearance of a mineral, and streak describes the color of the powdered mineral. Each mineral has a characteristic density. Mohs Hardness Scale is used to compare the hardness of minerals.

A broken flower is an example of an inherited trait of a plant.

True Or False

Answers

False because a inherited trait is something they get from their parent plants.

ANSWER ASAP GIVING BRAINLIEST AND OTHER STUFF!

Please answer the following with 5 or more sentences:
How does the velocity of a moving object depend on the choice of frame of reference?

Answers

Answer:

if i was to have a 10kg toy car and it was moving away from you it would get smaller like you was backing up.

Explanation:

velocity means speed-

not for sure im new here so sorry if i'm wrong  

What is the correct term for the flow of charged particles?

A. electricity
B. electric force
C. electric force
D. electric chargeelectric charge

Answers

Answer:

I would say electric current, but since that isnt a given choice, i would choose electricity.

Explanation:

an electric force is an attraction between two charged particles, not the flow.

electric charge is the cause of the electric force.

again im not sure, hope this helps!

The correct term for the flow of charged particles is known as electric current or electricity. Hence, option A is correct.

What is Electrical energy?

Charged material experiences a force when exposed to an electromagnetic field because of the fundamental characteristic of electric charge. It's conceivable for electrical ions to be positive or negative. Two charges that are opposed to one another repel one another.

An object with no net charge is said to be "neutral." Classical electrodynamics refers to the older theory of how charged particles interact, and it is still valid for problems that do not necessitate accounting for quantum phenomena.

The net charge of an isolated system, which is the total of the negative and positive charges, cannot change since electrical current is a conserved property. Electric charge is carried by subatomic particles.

Therefore, it concludes that flow of charged particles is termed as electricity.

To know more about Electrical Energy:

https://brainly.com/question/16182853

#SPJ2

plz help a smol bean out (no links btw)

Answers

Hey! If this is on big ideas get a app called “Slader” It has answers to all math problems just like up the book you use > save it > type in the section you are doing > and look for the problems you are doing.

(no links or files) How can an electromagnetic wave transmit energy?

A. Electromagnetic waves are vibrations in a medium. These vibrations carry energy.
B. Electromagnetic waves themselves are packets of energy. They transmit their energy if they are absorbed by an object.
C. Electromagnetic waves are vibrations in a medium. These vibrations carry both matter and energy to distant locations.
D. Electromagnetic waves are heat rays. They transmit their energy to objects they hit.

Answers

Answer:

Charged particles—such as electrons and protons—create electromagnetic fields when they move, and these fields transport the type of energy.

Explanation:

Answer:A. Electromagnetic waves are vibrations in a medium. These vibrations carry energy.

Explanation:

Other Questions
1. A disease has spread among lily pads in a pond ecosystem. Which is trueabout the immediate impact of this disease?A. Small fish that rely on lily pads for protection will decrease in populationB. The large fish population will increaseC. The water temperature will decreaseD. The frog population will increaseFood Web2. What would be true if the rabbit populationDiagramincreased?A. The bacteria population would increaseB. Hawk population would increase, snakepopulation would decreaseC. Wolf and hawk populations mightincrease, grasses would decreaseD. The grasshopper population wouldincrease3. What do the arrows represent in the food web?A. The transfer of energy from one organism to anotherB. Where each organism lives in the ecosystemC. Which animals eat each otherD. Which organisms receive direct sunlight A factory manufactures 9 x 105 packs of gum each month. They send these out to 16 different distribution centers. If each distribution center gets the same number of packs, how many are sent to each center? Someone please help me and explain it in simple words please and thank you. Are you planning to sell (avoir l'intention de vendre) these items at the end of the semester? Write ai l'intention de vendre, the correct direct object pronoun that replaces the cue in parentheses and n' pas (when needed) to complete each statement to make it true for you. Make sure to write the words in the correct order. Follow the model.Modle:(votre ordinateur)J'ai l'intention de le vendre./Je n'ai pas l'intention de le vendre.1. (vos livres)Je/J' enter answer.2. (votre canap)Je/J' enter answer.3. (vos tasses et vos assiettes)Je/J' enter answer.4. (votre tlphone portable)Je/J' enter answer.5. (votre tlvision)Je/J' enter answer.6. (votre lampe de bureau)Je/J' enter answer. True or False. Gandhi fought against the caste system and renamed the untouchables help? :) What fraction multiplication sentence could this model represent? Ill give brainliest Some one help me please Im struggling with 1-2 how do I work it out Need help ASAP with 10 Select the correct answer.Fiona is working on a template for her magazine article. She needs to submit an image of a mountain with an ice cap for her work on global warming. She also has some content in written form to go along with the image. How should Fiona include the text in the final template that would be ready for print?A. convert the text into markup languageB. divide the text in different fonts as requiredC. divide the text according to priority of contentD. convert the text into an artistic fontE. convert the text into a graphical format Marx saw human reason as the most fundamental aspect of society.True or False The population of Linton is 12 times as greatas the population of Ellmore.The combinedpopulation of both townsis 9,646 people. Whatthe population of Linton How did France react to Germany's halting payments? The Gardner Company, a client of your firm, has come to you with the following problem. It has three clerical employees who must perform the following functions:a. Maintain the general ledgerb. Maintain the accounts payable ledgerc. Maintain the accounts receivable ledgerd. Prepare checks for signaturee. Maintain the cash disbursements journalf. Issue credits on returns and allowancesg. Reconcile the bank accounth. Handle and deposit cash receiptsAssuming equal abilities among the three employees, the company asks you to assign the eight functions to them to maximize internal control. Assume that these employees will perform no accounting functions other than the ones listed. Which graph shows no correlation?A)B)C)D) John does not want to spend all of his money at one time so he puts the $150 pair of Nikes on a 3 month payment plan. How much money does he have to pay each month for the shoes? Was the American containment policy successful in Asia, why? HELP ME PLS I NEED HELP ALSO I NEED A SHOW YOUR WORK BUT PLS HELP 36.3 convert decimal into percent multiply it by 100. Describe the different services that state, county, and local governments provide their citizens. Explain why different levels of government are necessary.