A brick is sitting motionless on top of a wall. What type of energy does it have? (1 point)
A) geothermal energy
B) electromagnetic energy
C) potential energy
D) kinetic energy​

Answers

Answer 1

The block that is sitting motionless on top of a wall contains potential energy.

What is energy?

Energy is the ability to do work. There are several forms of energy. For the block that is sitting motionless on top of a wall, the block contains potential energy.

The potential energy is the block is used to do work when the block falls. The block can break a piece of glass on the floor due to the energy that it contains.

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Related Questions

Someone please help me, I know I already asked a question please don't think I not smart, but

#1. How are potential and kinetic energy related?


#2. How are sounds made?

Answers

Answer:

PE is related to the ability to do work, If an item is sitting on  a shelf

it has potential energy relative to its position on the floor, However, if the object were to fall it would hit the floor with a KE equal to the PE that it had sitting on the shelf.

Sounds are caused by compressional waves in  the air - when a piano key is struck or a TV is turned on, then compressional waves are produced in the surrounding air due to a disturbance. The human ear recognizes the disturbed air as due to the object that created the disturbance.

Gasses and plasma are called bank because their shape is always changing

Answers

Answer:

It is because gasses, liquids, and plasma are always changing shape they are named and classified as ‘fluid’.

A student draws the model shown below.



Which of these best compares the conditions at Location X and Location Y?
Answer

Answers

The statement that best compares conditions at Location X and Location Y is At Location x, there will be more daylight hours.

What are co-ordinate?

Generally, co-ordinates is the horizontal and vertical distances from the two reference axes are used to describe the position of a point on a coordinate plane

In conclusion, In the diagram, the student has created a model of the sun and the earth. Because the x point is pointing away from the sun, locations on point x receive more light than locations on point Y.

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If a bar magnet's nuetral region is broken in two, what will most likely occur?

Answers

Answer:

If a bar magnets neutral region is broken into two, the newly cut faces will become the new north or south poles of the smaller pieces.

Answer:

Explanation:

You will create two separate bar magnets. Let's say we have a bar magnet with a north pole at the top region, and a south pole in the bottom region. The magnetic field lines will run from the north pole to the south pole. If the bar magnet were broken into the two, the portion containing the north pole will now have a south pole at the point where it was broken. Similarly, the section containing the south pole will have a north pole at the point where it was broken.

The reason for this is because magnetic monopoles do not exist. There are electric monopoles, those are called electrons. But there are no magnetic monopoles. There is no such thing as a magnetic charge. Mathematically, this is captured in Maxwell's equations. The divergence of the magnetic field is always zero, which means there is no such thing as a magnetic monopole. There is nothing theoretically stopping a magnetic monopole from existing. A lot of theories actually favor it. We just have no proof of it, so we assume they dont exist.

what does Constant / Controlled Variable mean in science

Answers

Answer:

variable that doesnt change

Explanation:

contolled variable is that variable that does not change throughout the course of the experiment

define physical balance​

Answers

A physical balance is simply a weight measuring instrument. It is used to measure the weight of any unknown object with the help of the other object with known weight.

Explanation:

Hope it helps you!!

What does the quote means? And do you agree or disagree and if you could change it what would you say?

Answers

It means that if you lose something it will come back to you but if you throw something away because you are ‘destroying and hurting’ it, it won’t come back to you and when you throw something away it’s gone forever in the rubbish. Alternatively imagine it’s a kid if you lose it will try and find you if you treat it badly and throw it away it will leave. I agree with what this quote is saying and if I could change it I would say treat everything will respect because you’ll never know when you need it.

Hope that helped and it wasn’t too confusing

How much energy is given to each coulomb of charge that flows through a 1. 5-v battery?.

Answers

Answer:

1.5 jouls for 1 coulomb

Explanation:

energy(U)=charge(q)*potential(V)

so U for 1 coulomb U=1*1.5=1.5 jouls

and for 1 electron U=(1.6*10^(-19))*1.5= 2.4*10^(-19) jouls

Visible light has a range of wavelengths from about 400-750 nm. Which of these wavelengths is
most likely seen as the color red?

Answers

Answer:

600-750

Explanation:

The red color in the visible region lies in the wavelength of 600 – 750 nm. The visible light spectrum is the fraction of the spectrum that is visible to humans.

What is wavelength ?

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometers, and other units since it is a distance measurement.

The portion of the spectrum visible to the human light is known as the visible light Spectrum.

Visible light has a range of wavelengths from about 400-750 nm. The red color in the visible region lies in the wavelength of 600 – 750 nm.

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How to prepare for physics ATP exam o'levels?

Answers

Spend time on this subject. Physics may have some concepts which are difficult for students to understand in some cases. A key example is electricity and magnetism. Spend extra time on topics you find difficult and most of all, remember to do PAST PAPERS. These will be your light in the dark, your teachers, your friends. Continue to do them, and remember to leave one unsolved before your examinations. This will orient your mind for the examination and let you achieve the maximum marks possible.

i would appreciate your help​

Answers

Answer:

22.  C.  Pz > Py > Px

23.  B.  5.0 × 10⁴Pa

24.  B.  Upward thrust exerted by the liquid

25.  B.  The volume of the object immersed in the liquid decreases

26.  D.  When a body is wholly or partially immersed it experiences upthrust equal to the weight of the fluid displaced

Explanation:

22. The more you go deeper into the sea, the more the pressure of the water increases pushing down on you.

The reason why salt water is very dense is that when the salt dissolves in the water, it adds to the mass of the water, which makes the water more denser.

Due to this, we can assume that the water pressure exerted on the fish will be greater beneath the sea than the lake at the same depth.

Answer:   C. Pz > Py > Px

----------------------------------------------------------------------------------------------------------

23.

Given:

Density of water = 1000 kg m⁻³

Atmospheric pressure at sea level, Patm = 1.0 × 10⁵ Pa]

Depth of water in sea = 5m

To find the pressure exerted by the water on the fish, we use the formula: P = hpg

P = pressure

h = height or depth of water

p = density of water

g = gravitational field strength

We are given the depth and density, but not the gravitational field strength

Gravitational Field Strength:  Measures how much gravity there is

And since we live on earth, the gravitational field strength is 10 N/kg

Depth, h = 5m

Density, ρ = 1000 kg/m³

Gravitational Field Strength, g = 10 N/kg

Now we substitute these into the formula:

P = hpg

P = (5)(1000)(10)

Multiply 5 and 1000 to get 5000

P = 5000 × 10

Multiply 5000 and 10 to get 50000

P = 50000Pa

                                                                                                                                                                                                           

P = 5.0 × 10⁴Pa

Answer:   B. 5.0 × 10⁴Pa

----------------------------------------------------------------------------------------------------------

24. When a body is fully or partly immersed in a liquid, it undergoes an apparent loss in its weight due to upward thrust exerted by the liquid.

The upward thrust is the same as the weight of the fluid being displaced by an object.

Answer:   B. Upward thrust exerted by the liquid

----------------------------------------------------------------------------------------------------------

25.

When you add common salt to water it becomes denser, which can increase the mass and volume of the water. Due to water becoming denser, it can make an object thats less dense float. Also, density and volume are inversely proportional to each other, meaning that when density increases, volume decreases.

Answer:   B. The volume of the object immersed in the liquid decreases.

----------------------------------------------------------------------------------------------------------

26.

Achimede's principle states that:

Answer:   D. When a body is wholly or partially immersed it experiences upthrust equal to the weight of the fluid displaced.

4. Find the number of electrons transferred between two points kept at a potential difference of 20 V if 40 J of work is done​

Answers

Required answer :-

Number of electrons transferred are 1.25 × 10^19

Given :-

V = 20 Volt W = 40 J

We know that,

↠ W = P × t

↠ W = V × I × t

↠ W = V × Q/t × t

W = V × Q

On substituting values, we get

↠ 40 = 20 × Q

↠ Q = 40/20

Q = 2 c

↠ ne = q

↠ n = q/e

↠ n = 2/ 1.6 × 10^- 19

n = 1.25 × 10^19

Hence,

Number of electrons transferred are 1.25 × 10^19

What must be known to determine the direction of the magnetic force on a charge? check all that apply.

Answers

please check attachment hope it helps you।।

आपका दिन शुभ रहे।।

Question 7 of 10
Which of the following phrases best describes the term scientific model?
A. A simplified representation used to explain or make predictions
about something
B. The application of scientific knowledge to make predictions about
an object, system, or process
C. A physical copy of a scientific object, system, or process

Answers

Answer:

my answer to that question was c

Explanation:

What is the volume of the composite figure? 140 cubic inches 147 cubic inches 168 cubic inches 196 cubic inches.

Answers

The composite figure is a combination of a rectangular pyramid and a rectangular prism, hence its volume is 140in³.

Rectangular Prism and Pyramid

A rectangular prism is simply a three dimensional solid shape with six faces that are rectangles.

Volume of a rectangular prism is expressed as;

V = w × h × l

Where l is length, h is height and w is width

A rectangular pyramid is simply a three-dimentional object with a rectangular shaped base and triangular shaped faces that correspond to each side of the base.

The volume of rectangular pyramid is expressed as;

V = (1/3) × l × w × h

Where l is the base length, w is the base width and h is the height of the pyramid.

From the diagram below;

Length of rectangular prism Lprism = 7inWidth of rectangular prism Wprism = 3inHeight of rectangular prism Hprism = 4inLength of rectangular pyramid Lpyramid = 7inWidth of rectangular pyramid Wpyramid = 3inHeight of rectangular pyramid Hpyramid = 12in - 4in = 8in

First we calculate the volume of a rectangular prism.

V = w × h × l

V = 3in × 4in × 7in

V = 84in³

Hence, the volume of the rectangular prism is 84in³.

Next, we calculate the volume of rectangular pyramid.

V = (1/3) × l × w × h

V = (1/3) × 7in × 3in × 8in

V = (1/3) × 168in³

V = 56in³

Hence, the volume of the rectangular pyramid is 56in³.

Volume of the composite figure = Volume of prism + Volume of pyramid

Volume of the composite figure = 84in³ + 56in³

Volume of the composite figure = 140in³

Therefore, the composite figure is a combination of a rectangular pyramid and rectangular prism, hence its volume is 140in³.

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2. Following a strength training plan, someone who increases lean muscle mass by .5 pounds per month will achieve a weight gain of ______

a) 5 pounds in two months.
b) pound in one month.
c) 2 pounds in four months

Answers

Answer:

C

Explanation:

.5 lb/month   * 4 month = 2 lbs

what does the expression of the power consumed by an electric appliances by a DC current? What is this unit of this power in SI?​

Answers

Explanation:

dc stands for direct current it won't hurt u if u get in contact with dc but ac will be threatening to life

si unit is same as in ac (alternate current) and it is ampere or amp

what unit of the energy does a power company charge a consumer for

Suppose that you want to heat a gas so that its temperature will be as high as possible. Would you heat it under conditions of constant pressure or constant volume

Answers

According to Gay - Lussac's law, you should heat it under conditions of constant volume.

Ideal Gas

An ideal gas obeys the equation of state PV = nRT at all pressures, volume and temperatute.

According to Boyle's law, the volume of a gas is inversely proportional to the pressure while temperature is constant.

Also, according to Gay - Lussac's law, increase in temperature is direclty proportional to increase in pressure while volume remains constant.

Suppose that you want to heat a gas so that its temperature will be as high as possible. According to Gay - Lussac's law, you should heat it under conditions of constant volume.

Therefore, to heat a gas so that its temperature will be as high as possible, you should heat it under conditions of constant volume.

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Barton conducts an experiment using three metallic bars that might be magnets. the bars are labeled a, b, and c. the ends of each bar are numbered 1 or 2. 3 rectangles aligned horizontally end to end. the first has 1 a 2 on it. the second has 1 b 2 on it. the third has 1 c 2 on it. he places the end of one bar close to an end of a second bar and records his results in the table shown. a 3 column table with 3 rows. the first column is labeled end with entries a 1, a 2, b 2. the second column is labeled end with entries b 1, c 1, a 1. the last column is labeled result with entries attract, repel, attract. based on the data, which prediction should he expect to occur? a2 repels b1. c2 attracts b2. b1 repels c1. a1 attracts c2.

Answers

The prediction should the expect to occur will be C₂ attracts B₂. This is due to the fact that like charges repel while the unlike charges attract each other.

What is a magnet?

A magnet is an iron piece or of other material with its constituent atoms arranged in such a way that it shows magnetism qualities,

Like charge attracting different iron-containing objects or engaging itself in a magnetic field.

The given metallic bars are A, B, and C. Every end of the magnet is denoted with the 1 and 2.

The denotation to the magnet is given as;

A₁A₂

B₁B₂

C₁C₂

He places the end of one bar close to an end of a second bar. The end of magnets C₂ and B₂ are of unlike charges. As we know that the unlike charges attract each other.

So that the C₂ and B₂ due to the unlike charge ends attract each other.

Hence the prediction should the expected to occur will be C₂ attracts B

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Answer:

b

Explanation:

so you dont have to read the long one

Try moving the magnet in the different ways described in the table below,. Record your observations in the second column of the table. MotionMove the magnet straight through the coil, leading with the north pole. Once the magnet is completely through, move it back to its original position. Move the magnet straight through the coil, only this time leading with the south pole. Once the magnet is completely through, move it back to its original positionPut the magnet in the center of the coil, but don't move it. Put the magnet on the outside of the coil. Repeatedly move it up and down while outside of the coil. Keeping the magnet outside of the coil. Repeatedly move it back and forth horizontally.Place the magnet back inside of the coil. Now repeatedly switch the polarity of the magnet by pressing the button toward the bottom-right of the page over and over again.

Answers

Base on the experiment, we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

What is Faraday's law of electromagnetism?

Faraday's law of electromagnetism states that the negative rate of change of time (Δt) of the flux of the magnetic field (∅) through a surface is directly proportional to the flux (∅) of the electric field through a surface that has the loop as its boundary.

Electric generators are primarily designed and developed to use the properties of electromagnetism to convert kinetic energy (KE) that is possessed due to motion, into electrical energy. Thus, we can deduce that the mode of operation or working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

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Answer:we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

Explanation:

someone give me excuses for not having your pe kit

Answers

what the heck is a pe kit

What objects have orbital paths? A. the sun and stars
B. meteors and asteroids C. the planets and moons

Answers

Answer:

The planets and moons.

Explanation:

Planets follow an elliptical path around the sun (kinda oval shaped). Moons do the same to planets.

Explain Atmospheric Pressure and Wind

Answers

Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.
The pressure exerted by atmosphere is called atmospheric presssure

How many Watts of power does a model rocket engine have if it does 66 J of work on a model rocket in 0.9 seconds?​

Answers

Power developed by a model rocket engine will be 73.3 watts. Power is the ratio of the work done or the enrgy to the time period.

What is the power output?

The rate of the work done is called the power output. It is denoted by P.Its unit of a watt.

The given data in the problem is;

E is the energy = 66 J

P is the power output =?

t is the time period = 0.9 sec

The power output is given as;

[tex]\rm P = \frac{E}{t} \\\\ \rm P = \frac{66}{0.9} \\\\ \rm P = 73.3 \ watt[/tex]

Hence power developed by a model rocket engine will be 73.3 watts.

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Force f acts between two charges, q1 and q2, separated by a distance d. if q1 is increased to twice its original value and the distance between the charges is also doubled, what is the new force acting between the charges in terms of f? one quarterf one halff f 2f

Answers

The new force acting between the charges in terms of f given the data from the question is half f

Coulomb's law equation

F = Kq₁q₂ / r²

Where

F is the force of attraction K is the electrical constant q₁ and q₂ are two point charges r is the distance apart

How to determine the initial force Charge 1 = q₁Charge 2 = q₂ Electric constant (K) = 9×10⁹ Nm²/C²Distance apart (r) = dInitial force (F₁) = f =?

F = Kq₁q₂ / r²

F₁ = f = Kq₁q₂ / d²

How to determine the new force Charge 1 = 2q₁Charge 2 = q₂ Electric constant (K) = 9×10⁹ Nm²/C²Distance apart (r) = 2dNew force (F₂) =?

F = Kq₁q₂ / r²

F₂ = K2q₁q₂ / (2d²

F₂ = 2Kq₁q₂ / 4d²

F₂ = Kq₁q₂ / 2d²

F₂ = ½(Kq₁q₂ / d²)

But

f = Kq₁q₂ / d²

Therefore

F₂ = ½f = half f

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Answer:

C or 1/2

Explanation:

Question #14:

An engine using 1 mol of an ideal gas initially at 18.5 L and 402 K performs a cycle
consisting of four steps:

1) an isothermal expansion at 402 K from 18.5 L to 41.2 L
2) cooling at constant volume to 273 K
3) an isothermal compression to its original volume of 18.5 L
4) heating at constant volume to its original temperature of 402 K

Find its efficiency. Assume that the heat capacity is 21 J/K and the universal gas constant is 0.08206 L · atm/mol/K = 8.314 J/mol/K.

Answers

The efficiency of the engine through the four steps cycle is 83.4%.

What is the efficiency of a machine?

The efficiency of a machine is the ratio of useful work done by the machine and the work done on the machine expressed as a percentage.

The efficiency of the engine is given by:

[tex]ɛ=\frac {W} {Q}[/tex]

where;

W is the work done in the four steps,Q is the energy input

Since there at four steps in a cycle:

[tex]ɛ=\frac {W_1+ W_2+W_3+W_4} {Q_1+Q_2+Q_3+Q_4}[/tex]

The work done in the first step (isothermal expansion) is given by:

[tex]W_1=nRT_1\ln{\frac {V_2} { V_1}}[/tex]

where:

n= 1 mole, T1 = 402 K, V2 = 41.2 L, V1 = 18.5 L

Substituting the values:

[tex]W_1 = 1 × 8.314 × 402 \times ln{\frac {41.2} {18.5}} = 2676.01 J \\ [/tex]

Steps 2 and 4 are constant volume processes, therefore;

[tex]W_2=W_4=0[/tex]

The work done in the third step (isothermal expansion) is given by:

[tex]W_3=nRT_3\ln{\frac {V_4} { V_3}} [/tex]

where;

n = 1 mol, T3 = 273 K, V4 = 41.2 L, V3 = 18.5 L

Substituting the values:

[tex]W_3 = 1 × 8.314 × 273 \times ln{\frac {41.2} {18.5}} = 1817.29 J \\ [/tex]

[tex]W_3 = 1 × 8.314 × 273 \times ln{\frac {41.2} {18.5}} = 1817.29 J \\ [/tex]Heat enters the system only during steps (1) and (4).

The internal energy of the gas increases in step 4 but no work is done, while the internal energy is constant change in step 1 but work is done by the gas.

Thus;

[tex]Q_2=Q_3=0[/tex]

The heat that enters the system during the isothermal expansion is given by:

[tex]Q_1=W_1[/tex]

The heat that enters the system on step 4 at constant volume is given by:

[tex]Q_4=C_V(T_4-T_3)[/tex]

where:

Cv =21 J/K, T3 = 273 K, T4 = 402 K

Substituting the values:

[tex]Q_4= 21 × (402 - 273) = 2709 \: J[/tex]

Solving for efficiency, ɛ:

[tex]ɛ=\frac {2676.01+ 0+0+1817.29} {2676.01+0+0+2709} = 83.4\%[/tex]

Therefore, the efficiency of the engine is 83.4%.

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Hello people ~
When a comb rubbed with dry hair attracts pieces of paper. This is because the______

(a) comb polarizes the piece of paper

(b)comb induces a net dipole moment opposite to the direction of field

(c)electric field due to the comb is uniform

(d) comb induces a net dipole moment perpendicular to the direction of field​

Answers

[tex]\bold{Heya!}[/tex]

Answer :-

(b) comb induces a net dipole moment opposite to the direction of field.

Explanation :-

When a comb rubbed with dry hair it's attracts pieces of piece of paper. This is because the comb that induces of the dipole net that of the moment thatopposite of the field. And, This happens the field dueing to charge of the comb induces of the dipole moment in the paper of the molecules in the dielectric.

Hopefully This Helps ! ~

#LearnWithBrainly

[tex]\underline{Answer :}[/tex]

Jaceysan ~

Answer:

Option B

Explanation:

When a comb is rubbed with dry hair it induces some charge or its get charged either positive or negative

As paper remains in neutral hence it attracts the paper

Hence option B is correct

Name all the energy transfers that occur to make a solar-powered traffic light work (name what generates the energy, and what kind of energy it turns to):

Answers

Solar cells transfer energy from the photons in sunlight to the electrons in the solar cell. The more photons of sunlight absorbed by the solar cell, the greater the electric current.

Which force is responsible for holding the nucleus together via gluons.

Answers

The strong nuclear force holds together the protons and neutrons in the nucleus of an atom

How long does it take for a spaceship to get to the moon.

Answers

Answer:

about 3 days

It takes about 3 days for a spacecraft to reach the Moon. During that time a spacecraft travels at least 240,000 miles (386,400 kilometers) which is the distance between Earth and the Moon. The specific distance depends on the specific path chosen.

Explanation:

no explanation

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