what is science and examples with it​

Answers

Answer 1

Answer:

science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

Explanation:


Related Questions

Which best summarizes a concept related to the work-energy theorem?
When work is positive, the environment does work on an object.
When work is negative, the environment does work on an object.
O When work is positive, the kinetic energy in a system remains constant.
When work is negative, the kinetic energy in a system remains constant.

Answers

Answer: When work is positive, the environment does work on an object

Explanation:

The correct option is a)When work is positive, the environment does work on an object.

What is positive and negative work done ?

If work is done on the system , positive work is done on the system because energy enters the system in case of positive work done .If work is done by the system , work done will be negative

According to work energy theorem , change in kinetic energy is equal to work done . when energy enters in the system that means final energy is greater than the initial energy of the system , which implies positive work is done on an object .

this implies , correct option is a)When work is positive, the environment does work on an object.

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The magnitude of vector A is 10. Which of the following could be the components of A?
a) Ax= 5 , Ay= 5
b) Ax= 6 , Ay= 8
c) Ax= 7 , Ay= 9
d) Ax= 10 , Ay= 10​

Answers

Answer: B. Ax = 6, Ay=8

Explanation:

How is spring force different in a compressed spring versus a stretched spring?

Answers

Answer:

if you pull on a spring and stretch it, then you do work. that's bc you're applying a force over a displacement. your pull is the force and the amount that you stretch the spring is the displacement. a spring can be stretched or compressed.

Where does the focal point of a convex mirror fall?
a. In front of the mirror.
b. Behind the curvature of the mirror.
C. At the vertex.
d. None of the above.

Answers

C)at the vertex of the mirror

What is the mass of 23 mL of a liquid that has a density of 1.5 g/mL?

Answers

Answer:

The answer is 34.5 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 23 mL

density = 1.5 g/mL

We have

mass = 23 × 1.5

We have the final answer as

34.5 g

Hope this helps you

parts of MECHANICAL WAVES

help please UwU

Answers

Answer:

waves

Explanation:

ocean

Ren runs a hamburger stand and needs to clean up a season’s worth of grease buildup on the range hood over his griddle. explain what he should look for in a cleaning product that can handle a layer of grease

Answers

grease cleanerrrrrrr

Answer:

A cleaning product that contains a base.

Explanation:

Ren should use a cleaning product that contains a base. This is because bases readily react with lipids (fats), the kind of compound that makes up grease. A base would break down the grease, forming soap, which would then easily wash away.

If a person is picking up a book with the force of 50 N and the gravity is pushing down with 15 N, what is the net force?

Answers

Answer:

[tex]the \: net \: force = \: 50 - 15 = 35.[/tex]

Answer:

Net force is going to be GREATER FORCE - LESS FORCE if they are working in opposite direction

so,

         50N - 15N = 35N

Which of the following is an example of a properly written testable hypothesis? *

A people should taste this new health food and see whether it makes them stronger

B When dog owners don't feed their puppies Brand A food, the puppies do not grow properly

C If Frederico had added the leaves to the compost pile last year, he wouldn't have to organic fertilizer

D if it is dark, then an owl will find a mouse by the sound the mouse makes​

Answers

Answer:

D. if it is dark, then an owl will find a mouse by the sound the mouse makes

what does the slope of the line represent on a velocity vs time graph

Answers

Answer:

The principle is that the slope of the line on a velocity-time graph reveals useful information about the acceleration of the object. If the acceleration is zero, then the slope is zero. If the acceleration is positive, then the slope is positive

Explanation:

1. If all other things remain equal, which of the following changes to a closed circuit would result in increased resistance to the flow of electric current?
Correct Answer: A) Reducing the thickness of the conductor
B) Replacing the conductor with a more conductive material
Incorrect Response: C) Reducing the length of the conductor
D) Reducing the temperature of the conductor

2. What term refers to producing magnetism by placing a body within a magnetic field?
A) Polarization
B) Natural magnetism
C) Incorrect Response: Artificial magnetism
D) Correct Answer: Induced magnetism

3. What two things must exist for an electric current to be produced?
A) A negatively charged electrode and a positively charged electrode
B) Incorrect Response: A pair of highly conductive materials and a conducting path between them
C) Correct Answer: An electric potential between two bodies and a conducting path joining the bodies
D) A source of voltage and an open circuit

4. If all other things remain equal, which of the following changes to a closed circuit would result in increased resistance to the flow of electric current?
A) Correct Answer: Reducing the thickness of the conductor
B) Replacing the conductor with a more conductive material
C) Incorrect Response: Reducing the length of the conductor
D) Reducing the temperature of the conductor

5. Three components in a parallel circuit have individual resistances of r1, r2, and r3. What formula can you use to determine the total resistance of the circuit?
A) 1/R= r1 + r2 + r3
B) Incorrect Response: R= 1/r1 + 1/r2 + 1/r3
C) Correct Answer: 1/R= 1/r1 + 1/r2 + 1/r3
D) R= r1 + r2 + r3

6. Which of the following materials commonly used in electronic devices is classified as a semiconductor?
A) Correct Answer: Silicon
B) Incorrect Response: Copper
C) Glass
D) Plastic

7. Which of the following explains why your hair stands on end when you rub it with a balloon?
A) The balloon creates friction, which sticks your hair to it.
B) Correct Answer: Electrons from your hair jump to the balloon, causing it to become negatively charged on one side.
C) Incorrect Response: Protons from your hair jump to the balloon, causing it to become negatively charged on one side.
D) Protons from the balloon jump to your hair, causing it to become negatively charged.

Answers

Answer:

1. A) Reducing the thickness of the conductor would result in increased resistance to the flow of electric current

2. D) Induced magnetism produces magnetism by placing a body within a magnetic field.

3.  C)  For an electric current to be produced, an electric potential between two bodies and a conducting path joining the bodies.

4. YOU REPEATED QUESTION 1&4.

5. C) 1/R= 1/r1 + 1/r2 + 1/r3

6. A) Silicon, commonly used in electronic devices, is classified as a semiconductor

7. B) Electrons from your hair jump to the balloon, causing it to become negatively charged on one side.

Explanation:

7. The balloon “steals” electrons from your hair, which causes one side of the balloon to become negatively charged. Since your hair lost electrons, it now has a partial positive charge. Opposite charges of static electric attract, causing them to stick together.

6. For a material to be considered a semiconductor, it must have a resistance to electric current that's too high to be considered a conductor but too low to be considered an insulator. Three common semiconductors used in electronic devices are silicon, germanium, and selenium.

5. If three components are arranged to form a parallel circuit, and the individual resistance of these components are r1, r2, and r3 respectively, the formula for finding the total resistance R is: 1/R= 1/r1 + 1/r2 + 1/r3.

4. YOU REPEATED QUESTIONS 1 & 4.

3. For an electric current to be produced, there must be an electric potential between two bodies and a conducting path joining the bodies. Two oppositely charged bodies won't produce a current unless there's a conduction path for the electrons to travel through.

2. Placing a piece of metal such as an iron bar into a magnetic field, thereby causing the bar to become magnetized, is known as induced magnetism. Typically, an object that has been magnetized in this manner will lose its magnetic properties quickly when removed from the magnetic field.

1.  The resistance to electric current increases as the cross-section of the conductor is reduced, as the conductor is lengthened, and as the conductor is heated. Replacing the conductor with a less-conductive material increases the resistance as well.

1 & 4. A) Reducing the thickness of the conductor would result in increased resistance to the flow of electric current.

2. D) Induced magnetism produces magnetism by placing a body within a magnetic field.

3. C)  The two things must exist for an electric current to be produced is an electric potential between two bodies and a conducting path joining the bodies.

5. C) The formula used to determine the total resistance of the circuit is 1/R= 1/r1 + 1/r2 + 1/r3

6. A) Silicon, commonly used in electronic devices, is classified as a semiconductor

7. B) Electrons from your hair jump to the balloon, causing it to become negatively charged on one side.

What is electric current?

The stream of positive charges which flow from the positive terminal to the negative terminal of the battery attached in a circuit.

1 & 4. An electric potential between two bodies and a conducting path joining the bodies is required to produce current.  If all other things remain equal, changes to a closed circuit that would result in increased resistance to the flow of electric current is reducing the thickness of the conductor.

The correct option is A.

2. If an iron bar placed into a magnetic field, it become magnetized, also known as induced magnetism. The term refers to producing magnetism by placing a body within a magnetic field is induced magnetism.

The correct option is D.

3. The two things must exist for an electric current to be produced is an electric potential between two bodies and a conducting path joining the bodies.

The correct option is C.

5. If three components are arranged to form a parallel circuit, and the individual resistance of these components are r1, r2, and r3 respectively, the formula for finding the equivalent resistance R is: 1/R= 1/r1 + 1/r2 + 1/r3.

The correct option is C.

6. A semiconductor must have a resistance to electric current . Three common semiconductors used in electronic devices are silicon, germanium, and selenium.

The correct option is A.

7. The balloon transfers electrons from your hair, which causes one side to become negatively charged. Hair lost electrons, it has a partial positive charge. Opposite charges of static electric attract, causing it to stick together. So, hair stands on end when you rub it with a balloon because electrons from your hair jump to the balloon, causing it to become negatively charged on one side.

The correct option is B.

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what is v^2=0.05-4.9 please i need this asap​

Answers

Answer:

v =2.02

Explanation:

v^2=0.05-4.9

v^2=-4.85

square root both side

v=2.02

^^^^this is a not a perfect square  

what is a blastocyst definition

Answers

Answer: Explanation:

Blastocyst, a distinctive stage of a mammalian embryo. It is a form of blastula that develops from a berrylike cluster of cells, the morula. A cavity appears in the morula between the cells of the inner cell mass and the enveloping layer.

All students perceive poor grades as disappointing.
Please select the best answer from the choices provided
Т
F

Answers

Answer:

False

Explanation:

if your having a bad day I LOVE YOU YOUR WORTH IT YOU MEAN THE WORD TO MEEYOU GET KISSES MWHAAAAA
THANK YOU FOR LIVING ILYYY

Answers

Answer:

O: girl- aww your so sweeet thanks for that!!!!! like fr ive

been feeling so sad):

You are riding a bicycle. If you apply a forward force of 172 N, and you and the bicycle have a combined mass of 51 kg, what will be the forward acceleration of the bicycle? (Assume there is no friction)​

Answers

Answer:

The answer is 3.37 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]acceleration = \frac{force}{mass} \\[/tex]

From the question

force = 172 N

mass = 51 kg

We have

[tex]acceleration = \frac{172}{51} \\ = 3.372549019...[/tex]

We have the final answer as

3.37 m/s²

Hope this helps you

Which scenario is an example of the transfer of thermal energy by
convection?
A. A person uses a hot iron to remove wrinkles from a shirt.
B. You warm your feet in front of a fireplace.
C. A cup heats up when you pour hot water into it.
D. Warm air in a hot air balloon rises and heats air at the top of the
balloon.

Answers

I think it would be, D. Warm air in a hot air balloon rises and heats air at the top of the  balloon.

The scenario that represents an example of the transfer of thermal energy by convection is the warm air in a hot air balloon rises and heats air at the top of the balloon. Thus, the correct option for this question is D.

What is Convection?

Convection may be defined as a type of process through which heat is significantly transferred by the movement of a heated fluid such as air or water. It involves the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperatures.

Thermal energy refers to the energy which is contained within a system that is responsible for its temperature. Heat is the flow of thermal energy.

This thermal energy gets transferred through the process of convection from the top of the balloon in an example of a hot air balloon. The concept of this works on the warm air that is filled in a balloon and this warm air rises and heats air at the top of the balloon.

Therefore, the correct option for this question is D.

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What type of energy do you seen In a windmill

Answers

Answer:

mechanical energy is in a windmill

I agree with the fact other people

force
(smaller)
large piston
small piston
distance
moved
distance
moved
A
force (greate
liquid that cannot
be compressed
The weight of the car is 5000N. The area of the piston (B) that lifts the car is 0.
(a) What is the pressure needed in the liquid to lift the car?​

Answers

Answer:

Answer is a force liquid that cannot be compresed

on edgenuity

Explanation:

1. Given a list of atomic model descriptions:
A: electron shells outside a central nucleus
B: hard, indivisible sphere
C: mostly empty space
Which list of atomic model descriptions represents
the order of historical development from the earliest
to most recent?
A) A, B, CBA, C, B
CB, C, A D) B, A, C

Answers

Answer: A: electron shells outside a central nucleus

B: hard, indivisible sphere

C: mostly empty space

Which list of atomic model descriptions represents

the order of historical development from the earliest

to most recent?

Explanation:

3

Atomic models have been proposed throughout history describing the possible arrangements of different particles inside the atoms.

The very first model for atom was given by Dalton known as the solid sphere model that was an indivisible hard sphere.The model given by Rutherford that was known as nuclear model  mostly included empty space.The model given by Shrodinger showed electron shells as being outside the central nucleus.

Thus, the correct order of atom model is B C A. Hence, the correct answer is option C.

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How does changing the force affect the sound?

Answers

Answer:

From a sound standpoint, higher tracking force reduces all other things being equal which might reduce the top end a bit and increase bass.

When a chocolate bar is a solid does it have low thermal energy?

Answers

Answer:

Tiny particles in solids, liquids and gases are always in motion. It is the motion of particles that creates a form of energy called thermal (heat) energy that is present in all matter. The particles in solids are tightly packed and can only vibrate. Matter in its solid state has the lowest amount of thermal energy (for that type of matter). Because solids have less thermal energy than liquids or gasses, the atoms in their solid state move very little.

Explanation:

So yes, chocolate has VERY low thermal energy

5.Projectile motion is free fall with an initial horizontal velocity. True or false

Answers

Explanation:

One of the interesting things about projectile motion is that the horizontal motion is independent of the vertical motion. Recall that in freefall, an object continually experiences a downward acceleration of 9.80ms2 but has no horizontal acceleration.

I need help with this problem

Answers

I also need help with this problem!!

is Babe Ruth?
And can you give me 3-5 sentences about her

Answers

1. Ruth first gained fame as a pitcher.

Although best remembered for swatting a prodigious 714 home runs and slugging .690, which remains a major-league record, Ruth was one of baseball’s most dominant left-handed pitchers in the 1910s. He won 89 games in six seasons with the Boston Red Sox, including 24 in 1917, and helped the team win three World Series titles. Ruth only pitched five games for the New York Yankees as his position switched to outfielder after being sold by Boston before the 1920 season.

2. He did not retire as a New York Yankee.

Ruth’s major-league career not only started in Boston, it ended there as well, but not with the Red Sox. Discarded by the Yankees as his performance waned, Ruth signed with the National League’s Boston Braves in 1935 in the hopes of becoming the team’s manager the following season. When it became clear that his skills had deteriorated and the promise would not be kept, Ruth ended his 22-year career after just 28 games in a Braves uniform.

3. Ruth was not a unanimous choice for the Baseball Hall of Fame.

A year after his retirement, Ruth was among the five initial inductees elected to the new National Baseball Hall of Fame under construction in Cooperstown, New York. In spite of Ruth’s amazing career statistics, 11 of the 226 voters left him off their ballots, and the “Sultan of Swat” trailed Ty Cobb as the leading vote-getter. Ruth’s plaque in Cooperstown refers to him as baseball’s “greatest drawing card,” and proving the point, the Hall of Fame last month opened a new exhibit on Ruth to coincide with the centennial of his first big-league season.

Explanation:

Answer:

He began his career as a pitcher: Ruth was both a left-handed pitcher and left-handed batter.

His father died in a fight with a family member

Ruth played for the Boston Red Sox (1914-1919), the New York Yankees (1920-1934) and briefly the Boston Braves (1935).

Explanation:

also babe ruth is a guy-

a car moving on a road passes by kilometer 218 at 10:15 am and milestone 236 at 10:30 am. determine an average scalar speed in km / h over this stretch.

Answers

Answer:

v?

Explanation:

v = ∆s / ∆t

v =?

∆s = 236 - 218 = 18km

=t = 10: 30 - 10:15 = 15 minutes to hour 15/60 = 0.25h

v = 18 / 0.25

v = 72km / h

speed of 72km / h

How is temperature related to the physical change of a substance?Which best describes why a liquid needs a container when a solid does not?

Answers

Answer:

C

i just took the test!

Answer:

Solids have definite shapes, and liquids fill their containers.

Explanation:

The ACTUAL answer

What is the direction of the net force that acts on an object undergoing uniform circular motion?
A. The direction of the force is opposite to the object's motion.
B. The direction of the force is the same as the object's motion.
C. The direction of the force is away from the center ot the object's circular path.
D. The direction of the force is toward the center of the object's circular path.​

Answers

Answer B. the direction of force is the same


From the frame of reference of car 2, what is the velocity of car

Answers

It’s is the last one d

A ball is thrown up in the air for 1 second and has a displacement of 5 m.
Assume the ball is under the influence of gravity. a = -10 m/s. Determine the
initial velocity of the ball.
d=yt+at

Answers

The ball drop 2kms in the air
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I need some 1 minute presentation topics can you help me out The election of which president helped lead the civil war please helppp!!!Consider the following intermediate chemical equations.C(s) +202(g) CO(g)CO(g)+302(g) CO2(g)How will oxygen appear in the final chemical equation?O O2(g) as a productO O2(g) as a reactantO O(g) as a productO 20(g) as a reactant Finding the Equation of a LineYou have discovered another alien.Move the sliders to change the slope and y-intercept.Create an equation to produce the correct line of travel.slope: 06What is the equation of the line that provides thecorrect path to rescue this alien?A. Y=5B. Y=x+5C. Y=-x+5D. Y=5x Why can you use fraction multiplication to check theanswer to a fraction division problem? How do you usemultiplication to check a division problem? Irina ran 0.25 mile in 2 minutes. At this rate, how many minutes will it take her to run 2 miles?Enter the correct answer in the box. 1. Summarize the phosphorus cycle? Does phosphorus go into the atmosphere? someone help please??Write a research essay that traces the long-term significance of one of the seminal American works you read in this unit and how it connects to current issues. Your purpose should be clearly stated and well-supported by your research. Be sure to consult and properly cite at least three reliable sources of information from a variety of perspectives. Use a balance of direct quotes and paraphrasing. Wind is BEST described as what is created when _____. Which of the following equations have no solutions?Choose all answers that apply:Choose all answers that apply:(Choice A)A-60x+32=-60x+6060x+32=60x+60minus, 60, x, plus, 32, equals, minus, 60, x, plus, 60(Choice B)B-60x+32=32x-6060x+32=32x60minus, 60, x, plus, 32, equals, 32, x, minus, 60(Choice C)C-60x+32=-60x-3260x+32=60x32minus, 60, x, plus, 32, equals, minus, 60, x, minus, 32(Choice D)D-60x+32=32x+6060x+32=32x+60 someone please i need help Which of the following is a current U.S. Senator from Tennessee? a Bill Lee b Marsha Blackburn David Briley d Nancy Pelosi ________is the movement of molecules from an area of high concentration to anarea of low concentration.ExocytosisActive TransportDiffusionEndocytosis Which unit is not a measurement of volume?cm^3OcmOmlOL Listed below are selected transactions of Blossom Department Store for the current year ending December 31. 1. On December 5, the store received $490 from the Selig Players as a deposit to be returned after certain furniture to be used in stage production was returned on January 15. 2. During December, cash sales totaled $821,100, which includes the 5% sales tax that must be remitted to the state by the fifteenth day of the following month. 3. On December 10, the store purchased for cash three delivery trucks for $110,300. The trucks were purchased in a state that applies a 5% sales tax. 4. The store determined it will cost $96,300 to restore the area (considered a land improvement) surrounding one of its store parking lots, when the store is closed in 2 years. Blossom estimates the fair value of the obligation at December 31 is $77,400. A 2-column table the first column is labeled Minutes per Week of Moderate/Vigorous Physical Activity with entries 30, 90, 180, 330, 420. The second column is labeled Relative Risk of Premature Death with entries 1, .8, .73, .64, .615.According to the data, how does a persons relative risk of premature death change in coloration to changes in physical activity?The risk of dying prematurely increases as people become more physically active.The risk of dying prematurely does not change in correlation to changes in physical activity.The risk of dying prematurely declines as people become more physically active.The risk of dying prematurely declines as people become less physically active What was the purpose of the Currency Act of 1763? I need help!!!-10 = -5 (v-4)a) 12b) 6 c) 3d) -8What's the answer I need to know?! What is the slope of the line that passes through the points M (-3,5) and N (1,8) NO ONE IS HELPING ME PLEASE IM FINNA CRY plz help like really helpTEXT:Here follow the precise words of the Admiral: As I saw that they were very friendly to us, and perceived that they could be much more easily converted to our holy faith by gentle means than by force, I presented them with some red caps, and strings of beads to wear upon the neck, and many other tries of small value, wherewith they were much delighted, and became wonderfully attached to us.QUESTIONS:2. Based on the excerpt from Encounter, what can be inferred about the impact of Columbus arrival on the Tano? What evidence from the text supports this inference? (List words or phrases from the text.)