I NEED HELP QUICK PLEASE
Which of the following describes a likely energy transformation for a computer monitor?
potential energy to mechanical energy

light energy to electrical energy

electrical energy to sound energy

chemical energy to kinetic energy

Answers

Answer 1
It’s light energy to electrical energy
Answer 2

electrical energy to sound energy i think but im not sure


Related Questions

what are true about bonds​

Answers

Answer:

a.

Explanation:

A signal is sent from a nerve cell to a muscle cell.
What is this an example of?
A:Meiosis
B:Cellular respiration
B:intracellular communication
D:intercellular communication
PLEASE HELP

Answers

Answer:

D:intercellular communication

Explanation:

Cellular respiration and meiosis have nothing to due with communication between cells. Intracellular communication is communication within the cell, leaving intercellular communication left as the correct answer.

Sedimentary rock often contains
"strata". What are strata?

A. Large chunks

B. Noticeable layers

C. Grains of sand compacted together

D. Rocks from cooling magma

Answers

Answer:

Explanation:

Sedimentary rocks are formed from sediment grains deposited by water, wind or ice. They are always formed in layers, called “beds” or “strata”, and quite often contain fossils.

Strata are noticeable layers of rock built over time

Consider the equation below

plz help don't just give answer explain so i can understand

Answers

The equilibrium constant : Kc=[CO₂]

Further explanation

The equilibrium constant is the value of the product in the equilibrium state of the substance in the right (product) divided by the substance in the left (reactant) with the exponents of each reaction coefficient  

The equilibrium constant is based on the concentration (Kc) in a reaction  

pA + qB -----> mC + nD  

[tex]\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}[/tex]

Solid (s) and liquid (l) are not included in the calculation of Kc(only aq-aquoeus and g-gas)

From reaction

CaCO₃(s)⇔CaO(s)+CO₂(g)

Because CaCO₃ and CaO are solid, only CO₂ is included in the calculation

[tex]\tt Kc=[CO_2][/tex]

please help!!! i need help asap!!!
Newest crust is found at
a- divergent boundaries
b- subduction zones
c- continent-continent collisions

Answers

It’s A.................

Why have scientists reasoned that Earth's outer core is liquid?

Answers

Because it is extremely hot.

A compound with one phosphorous and five chlorine atoms would have the formula

Answers

Answer:

PCl5

Explanation:

1 Phosphorus (P)

5 Chlorine (Cl)

P1Cl5 =

PCl5

please mark brainliest

PCl(5)

Explanation:

P is phosphorous, chlorine is Cl

P(1atom) CL(5atoms)

We don't need to write the 1 atom for the P.

So PCl5

Make sure the 5 is the tiny lowercase.

The energy of a pendulum is recorded at different positions in the table below. Use the data in the table to determine the amount of kinetic energy the pendulum had at Position 2. dude i will give yall brainlest

Answers

Answer:

36.55 J

Explanation:

PE = Potential energy

KE = Kinetic energy

TE = Total energy

The following data were obtained from the question:

Position >> PE >>>>> KE >>>>>> TE

1 >>>>>>>> 72.26 >> 27.74 >>>> 100

2 >>>>>>>> 63.45 >> x >>>>>>>> 100

3 >>>>>>>> 58.09 >> 41.91 >>>>> 100

The kinetic energy of the pendulum at position 2 can be obtained as follow:

From the table above, at position 2,

Potential energy (PE) = 63.45 J

Kinetic energy (KE) = unknown = x

Total energy (TE) = 100 J

TE = PE + KE

100 = 63.45 + x

Collect like terms

100 – 63.45 = x

x = 36.55 J

Thus, the kinetic energy of the pendulum at position 2 is 36.55 J.

Which of the following statements regarding physical and chemical changes is true?

Answers

There’s no choices to pick from

What is the density of alunimium?

Answers

Answer:

2.7 g/cm³

Explanation:

Answer:

5000.9 mgl

Explanation:

bzbzbbxbdhuzuz

greater than
equal to
products
right

Answers

Answer:

.

Explanation:

A tank of oxygen has a volume of 40.0L and is held at a pressure of 159atm at 25∘C. What volume of O2 gas (in liters) would there be at normal body conditions, or 1.00atm and 37∘C?

Answers

Answer:

V2 = 6616 L

Explanation:

From the question;

Initial volume = 40L

Initial Pressure, P1 = 159atm

Initial Temperature T1 = 25 + 273 = 298K (Upon converting to Kelvin unit)

Final Volume, V2 = ?

Final Pressure, P2 = 1 atm

Final Temperature T2 = 37 + 273= 310K (Upon converting to Kelvin unit)

These quantities are related by the equation;

P1V1 / T1  = P2V2 / T2

V2 = T2 * P1 * V1 / T1 * P2

V2 = 310 * 159 * 40  /   (298 * 1)

V2 = 6616 L

Which of the following substances are soluble in water? Select all that apply.

a. NaCl
b. AgCl
c. AgNO3
d. KNO3

Answers

A, C and D are soluble in water.

What is solubility?

Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.

Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

AgCl is also not soluble in water because the forces favouring the formation of silver hydroxide (AgOH) are too weak to break the ionic bonds between silver and chlorine in AgCl. That means a bond between silver cation and the chloride ion is strong.

Silver nitrate is highly soluble in water but is poorly soluble in most organic solvents, except acetonitrile. It readily dissolves in water due to its strong ionic properties.

Potassium nitrate ([tex]KNO_3[/tex]) crystals were insoluble in water at room temperature. Heating the solution increases the solubility of the crystals in water.

Hence, A, C and D are soluble in water.

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How is electromagnetic spectrum ( wavelength & frequency) used to make calls on our cellphones?


Answers

Answer:

Cell phones use radio waves to communicate with cell towers, and these waves have wavelengths of approximately 10-1000 m, which are much too large to be ionizing. WiFi actually operates at quite precise frequencies, either 2.4 GHz or 5 GHz, which correspond to wavelengths of either 12 cm or 6 cm.

Explanation:

When the mobile phone is turned on, it emits radio waves that consist of radio frequency (RF) energy—a form of electromagnetic radiation moving at the speed of light. It works by transmitting radio wave signals to (and receiving these from) nearby base stations.

Gloria’s family built a new deck using building materials made from recycled plastic bottles. As they were heated, the plastics softened and were formed into new shapes. These plastics were ______________ solids, and their particles are arranged ________________ . These solids are different from __________________solids, which melt at a specific temperature. *
5 points
1. crystalline, vibrating, amorphous
2. amorphous, in no regular pattern, crystalline
3. amorphous, in a regular pattern, crystalline
2. crystalline, in no regular pattern, viscosity

Answers

Answer:2

Explanation:

Solid are divided into two based on arrangement of particles, one is amorphous solid and other is crystalline solids. Therefore the correct option is option 2.

What is amorphous solid?

Amorphous solid is a solid which is not crystalline and whose atoms are not arranged in regular pattern. particles are randomly arranged. Whereas in crystalline solids particles are arranged in a particular fashion. Example of amorphous solid is plastic, glass etc. Example of crystalline solids are all salts like sodium chloride.

Plastics are amorphous solids, and their particles are arranged in no regular pattern. These solids are different from crystalline solids, which melt at a specific temperature.

Therefore the correct option is option 2 that is amorphous, in no regular pattern, crystalline

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A teacher wrote the following part of a balanced chemical equation Cu+2AgNO3

Answers

Answer: Cu + 2AgNO3 -> 2Ag + Cu(NO₃)₂

Explanation: Assuming the teacher wants you to finish the other side of the balanced equation, here is how I would do it.

I would consider this a Single Replacement equation. This means Ag will be Replaced with Cu. Using the chart provided, it can be seen that (NO₃) has a charge of ⁻ ¹ . Therefore, it can be assumed that Ag as a ⁺¹ charge as well. However, copper has a charge of ⁺² (we know this because there are 2NO3 in the first equation and therefore there needs to be 2 when copper replaces it) so when replacing Ag with Cu, some butterfly subscript  multiplication needs to happen like the picture attached. So, finally, the equation is:

Cu + 2AgNO3 -> 2Ag + Cu(NO₃)₂

What sublevel has five orbitals?

Answers

Answer:

Explanation:

Option D is the correct answer

Answer:

3d

Explanation:

answer D

A gas is trapped in a 56 liter vessel. The temperature inside is 234 Celsius and thepressure is 1.1 atmospheres. What is the new pressure if the volume is compressed to54 liters and the temperature is lowered to 200 ​o​C?

Answers

Answer:

The new pressure is 1.06 atmospheres

Explanation:

We can calculate the new pressure from using the Combined gas law equation.

The combined gas law equation is

[tex]\frac{P_{1}V_{1} }{T_{1} } = \frac{P_{2}V_{2} }{T_{2} }[/tex]

Where [tex]P_{1}[/tex] is the initial pressure

[tex]V_{1}[/tex] is the initial volume

[tex]T_{1}[/tex] is the initial temperature

[tex]P_{2}[/tex] is the final pressure

[tex]V_{2}[/tex] is the final volume

and [tex]T_{2}[/tex] is the final temperature

From the question,

[tex]V_{1}[/tex] = 56 L

[tex]T_{1}[/tex] = 234 °C = (234 + 273.15)K = 507.15K

[tex]P_{1}[/tex] = 1.1 atm

[tex]V_{2}[/tex] = 54 L

[tex]T_{2}[/tex] = 200 °C = (200 + 273.15)K = 473.15K

Now, to determine [tex]P_{2}[/tex] (the new pressure), we will put the given values into the equation

[tex]\frac{P_{1}V_{1} }{T_{1} } = \frac{P_{2}V_{2} }{T_{2} }[/tex]

[tex]\frac{1.1 \times 56}{507.15}= \frac{P_{2} \times 54 }{473.15}[/tex]

∴ [tex]P_{2} = \frac{1.1 \times 56 \times 473.15 }{54 \times 507.15}[/tex]

Then,

[tex]P_{2} = \frac{29146.04 }{27386.1}[/tex]

[tex]P_{2} = 1.06[/tex] atm

Hence, the new pressure is 1.06 atmospheres.

what is the formula for Li1+ and F -1, and the IUPAC name for it too?

Answers

Answer:

stupid

13

Explanation:

1. What does the 1.00794 stand for?
1.
H
Hydrogen
1.00794?

Answers

Answer:

It stans for atomic mass

What do oxygen, silicon, and selenium have in common? How might this relate to their organization on the periodic table?

Answers

Answer:

They all belong to the p block in the periodic table

Explanation:

Let us examine the electronic configuration of each element;

Oxygen - [He] 2s2 2p4

Silicon - [Ne] 3s2 3p2

Selenium - [Ar] 4s2 3d10 4p4

A common thread that joins all the elements listed above is that they all belong to the p-block in the periodic table. They could be collectively referred to as p-block elements.

HELP ASAP I NEED HELP FAST PLEASE
Kinetic energy is often referred to the energy of

Question 1 options:

A)work


B)mass


C)motion
D)force


)
Question 2 (1 point)
Saving...
Which example has the least kinetic energy

Question 2 options:

A)a 10 kg rock rolling down a hillside at 100 m/s.


B)a 100 kg rock rolling down a hillside at 100 m/s.


C)a 1 kg rock rolling down a hillside at 1 m/s.


D)a 100 kg rock rolling down a hillside at 1 m/s.

Question 3 (1 point)
Saved
The law of conservation of energy states that

Question 3 options:

energy can be created but not destroyed.


energy can neither be created nor destroyed, only change forms.


energy can be destroyed but not created.


Question 3 (1 point)
Saved
The law of conservation of energy states that

Question 3 options:

A energy can be created but not destroyed.


B energy can neither be created nor destroyed, only change forms.


C energy can be destroyed but not created.


D energy never changes

Which is an example of an object increasing its kinetic energy

Question 4 options:

A a train stopped at the station.


B an airplane after landing on a level runway.


C a mouse running faster after spotting a cat.


D a rocket before launch.

Question 5 (1 point)
Identify when an object has a kinetic energy of zero joules.

Question 5 options:

A when an object is no longer in motion.


B when the energy has been destroyed.


C just after a ball it leaves your hand pitching a ball.


D as a pendulum swings downward.

Which is NOT an example of kinetic energy

Question 6 options:

A an elevator moving up to the 3rd floor.


B a skateboard rolling down a hill.


C an arrow after it has hit the target and is at rest.


D a skydiver as they decrease speed after opening their parachute.

Answers

Answer:

kinetic energy is referred to as the energy of motion (particles are always moving).  so the answer is c).

Write a causal question based on the information in the passage

Answers

Answer:

Casual is like hello sup dude

Explanation:

a muddy stream quickly flows downhill. When it reaches a flatter area, the stream moves more slowly, and the water clears.Explain why the stream changes appearance.

Answers

Answer: it calms it down and it dries and evaporates easier?

Explanation: I think that's how to explain it but I rlly dont want to get it wrong but i need points to ask a question

A piece of unknown metal absorbed 790.24 J of heat as it was heated from 40.0°C to 72.0°C. If the piece of metal weighed 55.0 g, what is the identity of the metal?

Answers

Answer:

Given metal is iron

Explanation:

Given data:

Heat absorbed = 790.24 J

Initial temperature = 40.0 °C

Final temperature = 72.0 °C

Mass of metal = 55.0 g

Identity of metal = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 72.0°C - 40.0°C

ΔT =  32 °C

790.24 J = 55 g ×c ×  32 °C

790.24 J = 1760 g. °C  ×c

c = 790.24 J /1760 g. °C

c = 0.449 J/g. °C

The specific heat capacity of iron is 0.449 J/g. °C thus, given metal is iron.

Fill in the blank with the correct number to balance the equation: 4Al + O2 → 2Al2O3. (Enter only a whole number.)

Answers

Answer:

3

Explanation:

You have to balance the atoms. On the right side there are 6 oxygen. In order to get the other side even you need a 3 coeficcient to get 6 oxygen on the left. That is the best way I can explain it.

The compound XCI is classified as ionic if X represents the element:
1.
H
2.
1
3.
Rb
4.
Br

Answers

Answer:Rb

Explanation:

The compound XCI is classified as ionic if X represents the element Rb (Rubidium). Therefore, option 3 is correct.

What do you mean by ionic bond ?

The term ionic bond is defined as the bond is formed when electrons are completely transferred from one element to another. One element in this bonding is always a metal, and the other is always a non-metal.

Chlorine is a group 17 and third period element. Chlorine has an atomic number of 17 and the element symbol is Cl.

The electronic configuration of the element chlorine is as follows :

1s₂,2s₂,2p₆,3s₂,3p₅.

Therefore, chlorine need one electron to become stable and form an ionic bond. Also, the ionic compound has the formula XCl which means that the valency of X is +1.

Thus, The compound XCI is classified as ionic if X represents the element Rb, option 3 is correct.

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Help, please!! If an object with a mass of 4.2 kg accelerates at 2.6 m/s2, what was the force exerted?

a.4.2n

b.10.92n

c.10.92kg

d.20n

Answers

10.92N

Force = mass x acceleration
4.2kg x 1.6m/s^2 = 10.92N


Why are ethics important when considering experiments?
A. A general sense of ethics ensures that everyone is aware of what's
right and what's wrong.
B. The scientific results would not be believable if they were obtained
unethically
C. Scientists would not be able to get funding if their experiments
were not ethical
D. It is important that people are not harmed for the sake of science,

Answers

Answer:

C. is the correct answer

Explanation:

I took the test

Covalent bonds normally form between which two types of elements?

Answers

Answer: Covalent bonds usually occur between nonmetals.  In Covalent bond elements share their electrons.

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