A piece of steel is 10.8 m long at 22°C. It is heated to 1202°C, close to its melting temperature. How much longer is the heated piece of steel?

Potential energy plus kinetic energy are combined to form mechanical energy. According to the principle of mechanical energy conservation, mechanical energy is constant in an isolated system when only conservative forces are acting on it.

E mechanical = U + K

E mechanical = mechanical energy

U = potential energy

K = kinetic energy

Mechanical energy, also known as kinetic energy or potential energy, is the energy that an object possesses when it is in motion or the energy that an object stores due to its location.

Renewable energy is also fueled by mechanical energy. In order to efficiently produce electricity or convert energy, many sources of renewable energy depend on mechanical energy.

Applying,

Mechanical Energy (M.E.) = ((1/2)mv²) + (m × g × h)

                                          = ((1/2)*100*45²)+(100*9.8*12)

                                          = 101250+ 11760

                                          = 113010 J

m is the object's mass, v is its speed, g is its gravitational acceleration, and h is its height above the ground.

To know more about mechanical energy, click on the link below:

https://brainly.com/question/24443465

#SPJ9

A highly charged child's balloon is not dangerous because none of the  above choices  are correct  

Since The static electricity in a balloon cannot harm you, though it can give you an annoying jolt. Static electricity is a gathered charge caused by an imbalance of electrons and protons on things around us. Rubbing two materials together may quagmire off a particle or two as they touch. This makes an imbalance in one of the materials, which sits there holding up for an opportunity to adjust itself when something with a comparing lopsidedness comes near sufficient. The adjusting release causes a pop of electricity or an inactive release. Since this voltage is fair sitting there's, it called static. Because it looks to move to something else, the movement classifies it as current electricity, and not static. Static power within the off-base situations, in any case, may be unsafe. A few areas have a solid reason for disposing of these small charges.

To know more about static electricity refer to the  link https://brainly.com/question/12791045?referrer=searchResults.

#SPJ4

A. the moving charge induces a magnet field

B. the energy of the charge pushes on the compass

C. the electrons heat up the wire, causing the compass to deflect

Extra care should be taken while installing the Liquidtight flexible nonmetallic conduit in such weather conditions. Option(C) is correct.

It is a limit for Liquidtight flexible nonmetallic conduit that it cannot be used in direct sunlight unless marked for this application. Liquidtight flexible nonmetallic conduit can only be used outdoors if it is explicitly marked for outdoor use and is exposed to sunlight without causing damage.

Any exposure to direct sunlight may cause the conduit to degrade, which may result in safety concerns. It can become brittle in extremely cold temperatures: It is a limit of Liquidtight flexible nonmetallic conduit that it can become brittle in extremely cold temperatures. It is a limitation of Liquidtight flexible nonmetallic conduit that, in extremely cold weather, it may become brittle and lose its capacity to flex.

When the temperature drops below a certain level, the material begins to harden, making it vulnerable to cracking or shattering. Therefore, extra care should be taken while installing the Liquidtight flexible nonmetallic conduit in such weather conditions.

To know more about Sunlight visit :

https://brainly.com/question/30035680

#SPJ11

Answer:

Explanation:

Given,

Speed of a car = 25 km

Converting 25 km into m

\( \sf{1km = 1000m}\)

\( \sf{25 \: km = 25 \times 1000m = 25000m}\)

Time taken ( t ) = 15 minutes

Converting minutes into seconds

\( \sf{1 \: minutes = 60 \: seconds}\)

\( \sf{15 \: minutes = 15 \times 60 sec = 900 \: seconds}\)

Finding the speed of the car

\( \boxed{ \sf{speed = \frac{distance \: travelled}{time \: taken} }}\)

\( \sf{ = \frac{25000 \: m}{900 \: s} }\)

\( \sf{ = 27.78 \: m/s}\)

Hope I helped!

Best regards!!

Answer:

Density of the mixture = 855.56kgm-3

Explanation:

Density = Mass / Volume

Volume of Liquid X = 0.5m³

Density of Liquid X = 900kgm-3

Mass of Liquid X = Density × Volume

= 900kgm-3 × 0.5m³ = 450kg

Volume of Liquid Y = 0.4m³

Density of Liquid Y = 800kgm-3

Mass of Liquid Y = Density × Volume

= 800kgm-3 × 0.4m³= 320kg

As X and Y are mixed, we add their masses and volumes together:

Mass = 770kg

Volume = 0.9m³

Now we can find the density of the mixture:

Density = 770kg / 0.9m³ = 855.56kgm-3 (rounded to the 2nd decimal)

Answer:

A and d

Explanation:

Mixture and solid

0.77 m/s2 directed 35° south of west

net force = (-17,-12)

net force = mass * acceleration

(-17,-12) = 27 * (x-acceleration,y-acceleration)

(x-acceleration,y-acceleration) = (-17/27,-12/27) = (-0.629629629..., -0.444...)

angle of acceleration = tan^-1 (-0.444.../-0.629629...) = 35.21759 degrees below negative x-axis.

magnitude of acceleration = sqrt((-0.629629...)^2 + (-0.444...)^2) = 0.77069 (5dp)

We need the relationship between force and velocity

There are two ways

Let me use the second way

\(\\ \sf\longmapsto p=mv\)

\(\\ \sf\longmapsto p\propto v\)

According to Newton's second law

\(\\ \sf\longmapsto F=\dfrac{dp}{dt}\)

\(\\ \sf\longmapsto F\propto p\)

Now

\(\\ \sf\longmapsto F\propto v\)

Key words:-

The internal resistance of a 12 V e.m.f cell is 5 10 2, and it is connected via an unknown resistance. When the circuit is closed, the terminal voltage difference is 2.2 V, such as R=5, the voltage differential drops to 1.8 V.

The difference in potential between a cell's two electrodes in a closed loop is known as the terminal voltage differential of a cell. When current is pulled from a cell, the value of the terminal potential difference is lower than the cell's emf.

The term "terminal potential difference" refers to the difference in potential between two electrodes in a closed circuit, or while current is being pulled from the cell.

To  know more about voltage visit:

https://brainly.com/question/13521443

#SPJ1

sectors are the amount of resources

Answer:

The name of the highly Electropositive element goes first.

e.g

\(Cl_{2}O \: = > \: dichloride \: oxide\)

Chlorine is more Electropositive than Oxygen.

e.g

\(NO_{2} \: = > \: nitrogen \: dioxide\)

Nitrogen is more Electropositive than Oxygen

Answer:

Correct 40 m/s

Explanation:

Answer:

It will be in liquid state loosing it's magnetic property.

Explanation:

Iron melts at 1538°C after loosing it's magnetic property at 770°C.

Gas is the state of the iron ball when it is heated at 2000 degrees Celsius.

An iron ball is in the state of matter known as a gas when heated to a temperature of 2000 degrees Celsius. Iron changes from a solid to a liquid at its melting point, which is about 1538 degrees Celsius, at this extraordinarily high temperature. Beyond its melting point, iron continues to absorb heat until it reaches its boiling point, or around 2862 degrees Celsius, where it turns from a liquid to a gas.

The iron has crossed its melting point but has not yet boiled at 2000 degrees Celsius. As a result, it is liquid, with the iron being in a molten state. Since the iron no longer has a solid structure, it may now flow freely, just like other liquids do.

It's critical to remember that heating iron to such high temperatures involves a lot of energy, and that handling things or materials at such temperatures safely demands tremendous caution. It exists as a solid at lower temperatures, below iron's melting point, and as a gas at higher temperatures, above iron's boiling point.

Hence, gas is the state of the iron ball when it is heated at 2000 degrees Celsius.

To learn more about gas, here:

https://brainly.com/question/14812509

#SPJ3

The proton experiences an acceleration of \($6.60\times10^{10} \text{m/s}^2$\) in a uniform electric field of 691 N/C, and it takes \($3.48\times10^{-5}$\) s to reach a velocity of \($2.30\times10^{6}$\) m/s. During this time, the proton travels a distance of \($4.36\times10^{-10}$\) m and has a kinetic energy of \($3.07\times10^{-12}$\) J.

(a) The magnitude of the acceleration experienced by the proton can be determined by using the equation for the force on a charged particle in an electric field, which is F = qE, where F is the force, q is the charge of the particle, and E is the electric field strength. For a proton, the charge is equal to the fundamental charge, which is \($1.602\times10^{-19} \text{C}$\). Therefore, the force on the proton is \($F = (1.602\times10^{-19} \text{C})(691 \text{N/C}) = 1.106\times10^{-16} \text{N}$\)

The acceleration of the proton can be determined using the equation F = ma, where m is the mass of the proton. Thus, \($a = F/m = \dfrac{1.106\times10^{-16} \text{N}}{1.6726\times10^{-27} \text{kg}} = 6.60\times10^{10} \text{m/s}^2$\).

(b) To find the time it takes for the proton to reach the given speed, we can use the kinematic equation v = u + at, where u is the initial velocity (which is 0 m/s), v is the final velocity (\($2.30\times10^{6} \text{m/s}$\)), a is the acceleration (\($6.60\times10^{10} \text{m/s}^2$\)), and t is the time. Rearranging this equation gives \($t = \dfrac{v-u}{a} = \dfrac{2.30\times10^{6} \text{m/s}}{6.60\times10^{10} \text{m/s}^2} = 3.48\times10^{-5} \text{s}$\).

(c) The distance the proton has moved in this time interval can be calculated using the kinematic equation \($s = ut + \dfrac{1}{2}at^2$\), where s is the distance traveled. Substituting the known values, we get \($s = \dfrac{1}{2}(6.60\times10^{10} \text{m/s}^2)(3.48\times10^{-5} \text{s})^2 = 4.36\times10^{-10} \text{m}$\)

(d) The kinetic energy of the proton can be calculated using the equation \($KE = \dfrac{1}{2}mv^2$\), where KE is the kinetic energy, m is the mass of the proton, and v is the velocity of the proton. Substituting the known values, we get \($KE = \dfrac{1}{2}(1.6726\times10^{-27} \text{kg})(2.30\times10^{6} \text{m/s})^2 = 3.07\times10^{-12} \text{J}$\).

To learn more about acceleration

https://brainly.com/question/12550364

#SPJ4

Answer:

Explanation:

A scalar quantity is a physical quantity that has only one characteristic - a numerical value.

The scalar value can be positive or negative.

Examples of scalar quantities: temperature, mass, volume, time, density.

A vector quantity is a physical quantity that has two characteristics:

1) a numerical value that is always positive (vector modulus);

2) direction.

Examples of vector physical quantities: speed, acceleration, force.

The potential energy of two point charges when they are twice as far apart will be 1/4U.

The potential energy between two point charges depends on the distance between them. The relationship between potential energy (U) and distance (d) is given by the equation:

U ∝ 1/d

This means that as the distance between the charges increases, the potential energy decreases.

In the given scenario, if the charges are initially a distance d apart and the potential energy is U, and then they are moved to a distance 2d apart, we can determine the new potential energy.

Since the potential energy is inversely proportional to the distance, doubling the distance will result in a quarter (1/4) of the initial potential energy. Therefore, the potential energy when the charges are twice as far apart is U/4.

Hence, the correct option is U/4.

learn more about potential energy

https://brainly.com/question/13548111

#SPJ11

the complete question is:

If the electrical potential energy of two point charges is U when they are a distance d apart, their potential energy when they are twice as far apart will be U/4. U/2. U 2U. 4U

Answer:

5Hz

Explanation:

I hope that by stating f you mean frequency

so I think people in this app just like to give answers without explaining so let me try to explain to you why

first of all, you must know the formula

just insert the values in

50 = 10 x frequency

50/10 = frequency

5 = frequency

Answer:

12.39m/s²

Explanation:

use the formula a=v-u

t

Answer:

192 cm.

Explanation:

Step 1:

4 cm. × 6 cm. × 8 cm.    Equation

Step 2:

24 cm. × 8 cm.    Multiply

Answer:

192  Multiply

Hope This Helps :)

A force on a magnet occurs when it is moved near a coil of wire due to electromagnetic induction.

When a magnet is moved near a coil of wire, the changing magnetic field created by the movement of the magnet induces an electric current in the wire. This induced current, in turn, generates its own magnetic field, which opposes the change in the original magnetic field according to Lenz's law. This interaction between the magnetic fields creates a force on the magnet.

The force on a magnet when moved near a coil of wire results from the electromagnetic induction and the interaction of magnetic fields due to the induced current in the wire.

To know more about Lenz's law, visit:

https://brainly.com/question/12876458

#SPJ11

ANSWER

EXPLANATION

We want to find out how wings help a plane to fly.

The wings of an airplane are there to help lift the plane. They are shaped to make air move faster over the wings.

They are used for lifting, landing, turning and controlling the airplane. The curve on the wings make the air move faster than the air at the bottom of the wings which appropriates Bernoulli's principle to push the plane into the air.

Answer:

yes makes sense

Explanation:

Answer:

where m < M is delivered to the space station. Soon after, the space station's orbit is adjusted so that it is 50 km ...

A payload of mass m, where m<M, is delivered to the space station.

The maximum mass that the vehicle is capable of moving is referred to as the mass's payload. The carrying capacity of a packet or other transmission data unit is referred to as a payload.

The phrase, which has military roots, is frequently used in relation to malicious code that can be executed and cause harm. A payload is a section of code that runs when hackers take advantage of a weakness. In other words, it's a module for an exploit.

It typically consists of a few commands that will execute on the targeted operating system in order to steal data and carry out other malicious deeds (such as keyloggers).

Therefore, A payload of mass m is sent to the space station, where m<M.

Learn more about the payload, refer to:

https://brainly.com/question/7137877

#SPJ2

The Oort cloud is the proximate source of observed nearly parabolic, so-called 'new' comets entering the planetary region, and is also the presumed source of the long-period comet flux and the majority of Halley-type comets (HTCs).

The oort cloud is important for understanding the formation of the solar system.

It is believed to be an important source of comets that can provide valuable information about the conditions and processes that were present in the early solar system.

Here,
The Oort Cloud is important for understanding the formation of the solar system because it is believed to be a reservoir of icy bodies that formed early in the solar system's history. These icy bodies, which include comets, are thought to have played a key role in the early evolution of the solar system by delivering water and other volatile materials to the inner solar system, including the early Earth.

By studying the composition and properties of comets from the Oort Cloud, scientists can gain insights into the formation and evolution of the solar system and learn more about the conditions that were present in the early solar system.

Learn more about oort clouds here:
https://brainly.com/question/23368033
#SPJ6

Answer:

D

Explanation:

We have:

vi = initial speed = 4 m/s

vf = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Apply:

Replace with the values given:

Answer: 4.2 m/s^2

The Acceleration of the car is 4.2 m/s.

We will use the formula of acceleration.

a = vu - vi / t

Given:

vi = initial speed = 4 m/s

vu = final speed = 25 m/s

t= time = 5 s

a = acceleration = ?

Now, we will put the given values in the formula,

a = vu - vi / t

a = 25 - 4 / 5

a = 21 / 5

a = 4.2 m/s

Therefore, the Acceleration of the car is 4.2 m/s.

To know more about Acceleration:

https://brainly.com/question/18717714

The magnitude of the magnetic field cannot be determined without additional information about the wave.

In order to determine the magnitude of the magnetic field at a particular instant and point in space, we need more information about the wave.

Specifically, we need to know the frequency of the wave, as well as the speed of light in the medium through which the wave is traveling.

This is because the relationship between the electric and magnetic fields in an electromagnetic wave is determined by Maxwell's equations, which are dependent on these factors.

Without this additional information, we cannot calculate the magnitude of the magnetic field.

For more such questions on magnitude, click on:

https://brainly.com/question/24468862

#SPJ11

Answer:

chloroplast

Explanation:

Endosymbiosis theory explains the origin of chloroplast and mitochondria in the eukaryotic organisms.

When the pro-eukaryotes engulfed the blue-green algae or photosynthetic bacteria, these bacteria formed the symbiotic relationship with the pro-eukaryotes. These photosynthetic bacteria transformed into the chloroplast organelles of the eukaryotes which can capture the sunlight and use it in the synthesis of glucose molecules. These eukaryotic cells later formed the plant kingdom.