At what point of thermometric scale does Kelvin scale reading coincide with Fahrenheit scale

Brian's acceleration was \(0.2 m/s^{2}\). This means that his velocity increased by 0.2 m/s every second during the 4 seconds.

To find Brian's acceleration, we can use the formula: acceleration = (change in velocity) / (time taken)

The change in velocity is the difference between his final velocity and initial velocity: change in velocity = final velocity - initial velocity

So, we have: change in velocity = 2 m/s - 1.2 m/s = 0.8 m/s

The time taken is: time taken = 7 s - 3 s = 4 s

Now we can plug in these values to find the acceleration: acceleration = (0.8 m/s) / (4 s) = \(0.2 m/s^{2}\)

Therefore, Brian's acceleration was \(0.2 m/s^{2}\). This means that his velocity increased by 0.2 m/s every second during the 4 seconds.

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Phil Physiker throws two balls, one straight up and another straight down, both with the same speed from the edge of a cliff. Since the balls are thrown with the same speed, they will experience the same gravitational force acting on them.

However, the initial velocity for each ball will be opposite in direction.For the ball thrown upwards, the initial velocity is positive, and it will slow down due to gravity until it reaches its peak height and then falls back down. For the ball thrown downwards, the initial velocity is negative, and it will accelerate due to gravity as it falls.

Despite their different initial velocities, both balls will hit the ground with the same final velocity. This is because the distance they fall, the gravitational force acting on them, and their mass are the same. The only difference is the time it takes for each ball to reach the ground. The ball thrown upwards will take longer because it must first decelerate, stop at the peak, and then accelerate downwards, while the ball thrown downwards only accelerates during its fall.

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Answer:

right    

Explanation:

The up and down forces cancel

  then you are left with a    -200    and a  + 400

     resulting in a + 200   (to the right)

Answer:

Explanation:

Total energy supplied is,

E = V*I*t

=12 V x 60 A.h (3600 s/ 1 h)

=2.592*10^6 J

Answer:

975 m/s^2

Explanation:

The formula for rate of acceleration is

(Final velocity - intial velocity)/ time taken

If you plug in your data you will get 975 m/s^2

(1600 m/s -1210 m/s )/.4 s = 975 m^2

The bandwidth of the periodic composite signal is drawn as a range between 100 Hz and 2100 Hz , The data rates for sending a digital signal using one harmonic, three harmonics, and five harmonics on a TV channel with a 6 MHz bandwidth would be 6 MHz, 18 MHz, and 30 MHz .

For the first question

Draw the bandwidth of a periodic composite signal, we need to consider the highest frequency component present in the signal.

We have two sine waves one with a frequency of 100 Hz and the other unspecified. Since the bandwidth is given as 2000 Hz, we can assume that the second sine wave has a frequency of 2100 Hz (2000 Hz above the first sine wave frequency).

Draw the bandwidth, we can create a graph with frequency on the x-axis and amplitude on the y-axis.

We plot the amplitude values for the two sine waves at their respective frequencies (100 Hz and 2100 Hz). The bandwidth will be the range between these two frequencies on the x-axis.

For the second question

The data rate for a digital signal transmitted using one harmonic, three harmonics, and five harmonics can be calculated by multiplying the channel bandwidth by the number of harmonics used. Since the bandwidth is given as 6 MHz, the data rates would be as follows:

One harmonic: 6 MHz

Three harmonics: 18 MHz

Five harmonics: 30 MHz

The data rate increases with the number of harmonics used because each harmonic contributes additional information to the signal, allowing for a higher data transmission rate.

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Answer:

It doesn't change. It stays the same.

I hopes this helped you and if it did I'm glad I helped someone!!!

Explanation:

Answer:

shiny

Explanation:

Answer:

COLD

Explanation:

Hot glass looks the same as cold glass.

The static friction force of the pavement on the wheels will not do any work on the skateboard.

Static friction is a variable resisting force that is equal and opposite to the external force until it exceeds the motion threshold when sliding begins.

If the skateboard is rolling at a constant speed without any other forces acting on it, then there is no tendency to slip between the wheel and the surface, so there is no frictional work. Friction will only try to prevent slipping between the 2 surfaces.

On an inclined plane, the wheels will tend to slide down, and if there were no friction, it would again slide between the wheels and the inclined surface. Perhaps friction will always try to counteract the slip, so here it acts upward on the slope to try to prevent the skateboard from sliding down the slope. This has the effect of applying a moment to the skateboard causing it to roll.

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The volume of water increases when it freezes due to a unique property known as the anomalous expansion of water. Most substances contract and become denser as they transition from a liquid to a solid state. However, water defies this trend.

When water molecules cool down, they start to form stable hydrogen bonds with neighboring molecules. In the liquid state, these hydrogen bonds are constantly forming and breaking.

However, as the temperature drops below 4 degrees Celsius, the water molecules slow down, allowing more stable hydrogen bonding to occur.

In the process of freezing, the water molecules arrange themselves in a hexagonal lattice structure, with each molecule bonded to four neighboring molecules.

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Answer:

M. Magnetism is a property of individual atoms.

Explanation:

when a magnet is broken into pieces the new pieces behave like the original magnet this observation shows that magnetism is the property of individual atoms.

Answer:

Imp_{1-2}=5000[kg*m/s]

Explanation:

In order to solve this problem, we must use the principle of conservation of momentum, which is defined as the product of mass by Velocity.

It must be defined that the impulse after the force is applied is equal to the momentum before the impulse applied on the body.

ΣPbefore = ΣPafter

P = momentum = m*v [kg*m/s]

In this way, we will construct the following equation.

\((m_{1}*v_{1})+ Imp_{1-2}=(m_{1}*v_{2})\)

where:

m₁ = mass of the object = 200 [kg]

v₁ = velocity of the object before the impulse = 15 [m/s]

v₂ = velocity of the object after the impulse = 40 [m/s]

Now replacing:

\((200*15) + Imp_{1-2} = (200*40)\\Imp_{1-2}=5000[kg*m/s]\)

Answer:

Atomic number

Explanation: He organized the elements into a periodic table by ATOMIC NUMBER

According to the question The horizontal velocity of the body is greatest in value at mid-stance for running. the correct option is C

Walking and running are two different ways of travelling by foot, but there are some key differences between them. Running entails a period of time when both feet are in the air and a period of time when both feet are in contact with the ground. When one foot is in contact with the ground, walking always has at least one foot in contact with the ground, whereas running requires both feet to be off the ground for a portion of the stride cycle. These differences affect the way that force is applied to the body, particularly the legs and feet.

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The internal energy of the system how the evaporation of sweet cools down the body of the athlete after exercising are mentioned below.

What is evaporation ?

The water cycle's crucial step is evaporation. When a liquid transforms into a gas, evaporation takes place. As rain puddles "disappear" on a hot day or when wet clothing dries in the sun, it is simple to envision. The liquid water in these instances is evaporating into a gas known as water vapor rather than actually dissipating.

What is energy?

Examples and Definitions of Energy (Science) The capacity to work comes from energy. Energy types include chemical, nuclear, and electrical energy. Science and engineering both depend on the idea of energy. Here is a look at the classification of energy as well as its description and examples.

Therefore, The internal energy of the system how the evaporation of sweet cools down the body of the athlete after exercising are mentioned above.

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Answer:

Electron, proton and neutron

Explanation:

In each and every atom they are consist of electron, proton and neutron.

The power conducted by the resistor, given that it carries a current of 0.8 A is 19.2 Watts

Mechanical Power can be defined as the rate at which energy is consumed. This is also true for Electrical power, since it gives an expressing of the rate in which Electrical energy is consumed. Electrical power is expressed mathematically as:

Power (P) = voltage (V) × current (I)

P = IV

With the above formula, we can determine the power as illustrated below:

from the question given above, the following data were obtained:

Power (P) = voltage (V) × current (I)

P = IV

P = 24 × 0.8

P = 19.2 watts

Thus, the power conducted by the resistor which carries the current of 0.8 A is 19.2 Watts

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Answer:

The phrase "resultant displacement" refers to the overall or net displacement of an object or particle after undergoing multiple displacements or motions.

When an object or particle undergoes multiple displacements, each displacement can be represented as a vector with magnitude and direction. The resultant displacement is the vector sum of all these individual displacements, taking into account both their magnitudes and directions. It represents the overall change in position or location of the object or particle.

The resultant displacement can be calculated by adding the individual displacement vectors using vector addition techniques such as graphical methods or vector algebra.

It provides a concise description of the final displacement achieved by an object or particle after undergoing various motions or displacements.

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Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago.

Answer:

At the top of the roller coaster, there is a lot of potential energy. When it comes to the bottom, the roller coaster loses its potential energy and gains kinetic energy as it is going very fast here.

The kinetic energy of a roller coaster as it approaches its lowest point will be maximum and loses its potential energy.

The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.

According to the law of conservation of energy, the total energy is defined as the sum of kinetic energy and potential energy.

Total energy = kinetic energy+potential energy

Potential energy is due to the position.While the kinetic energy is due to the velocity.

There is a maximum potential energy at the top of the roller coaster. As it nears the bottom, the roller coaster loses potential energy and acquires kinetic energy due to the high speed.

Hence,the energy of the body by the virtue of its motion is known as the kinetic energy of the body

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Answer:

Explanation:

in your textbook, they have a formula like this:

g=mass of earth*G/R^2

G=6.67*10^-11

apply to this

we have g=6*10^2*4*6.67*10^-11/(6.4*10^3*1000)^2=9.78

A fuel is compressed from a volume of two.00 l to 1.00 l at a consistent pressure of 2.00 atm. The work done on the gas during this compression process is 2.00 L atm.

So, ΔV = (1.00 L - 2.00 L) = -1.00 L (since the volume decreases during compression).

Substituting those values into the components, we get:

W = - (2.00 atm) x (-1.00 L)

W = 2.00 atm x 1.00 L

W = 2.00 L atm

Compression is the process of reducing the size of a file or data by encoding it in a more efficient way. The goal of compression is to minimize the amount of storage space required to store data or to reduce the amount of time needed to transmit data over a network.

Compression works by identifying patterns in the data that can be represented in a more concise form. For example, if a file contains repeated sequences of data, compression algorithms can represent those sequences with a shorter code that refers back to the original sequence. Lossless compression preserves all the original records, at the same time as lossy compression discards a number of the data so as to achieve higher stages of compression.

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The final speed of the car at the given conditions is 30.1 m/s.

The given parameters:

The change in the energy applied to the car is calculated as;

\(\Delta E = E_1 - E_2\\\\\Delta E = 22,000 \ J \ - \ 3,666.67 \ J\\\\\Delta E = 18,333.33 \ J\)

The final speed of the car is calculated as follows;

\(\Delta E = \frac{1}{2} m(v_f^2 - v_0^2)\\\\v_f^2 - v_0^2 = \frac{2\Delta E}{m} \\\\v_f^2 = \frac{2\Delta E}{m} + v_0^2\\\\v_f = \sqrt{ \frac{2\Delta E}{m} + v_0^2} \\\\v_f = \sqrt{ \frac{2\times 18,333.4}{1700} + (21)^2} \\\\v_f = 30.1 \ m/s\)

Thus, the final speed of the car at the given conditions is 30.1 m/s.

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The dark lines observed in the __spectrum__ of a hot light bulb when a cool gas is placed in front of it reveal valuable information about the properties of the gas and its interaction with light.

These dark lines are known as absorption lines or Fraunhofer lines, named after the German physicist Joseph von Fraunhofer who first observed them in the early 19th century.

The absorption lines occur because the atoms or molecules of the cool gas can absorb specific wavelengths of light. Each chemical element or compound has a unique set of energy levels that its atoms or molecules can occupy.

When light passes through the cool gas, the atoms or molecules in the gas can absorb photons of specific energies that match the energy differences between these levels.

As a result, the absorbed photons are removed from the incident light, leading to dark lines at those specific wavelengths in the observed spectrum.

The positions and patterns of these dark lines provide a characteristic fingerprint of the gas present. By comparing these lines to known spectral patterns, scientists can identify the elements or compounds in the gas.

Moreover, the intensity or depth of the absorption lines can reveal information about the density or concentration of the gas.

The greater the concentration of absorbing particles in the gas, the deeper and more pronounced the absorption lines will be.

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The complete statement is "Suspension is a type of construction where the main load-bearing elements are hung from suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed. "

Generally, A suspension speaks to the holding up of material by apply of another force against gravitational force.

In conclusion, Suspension is a type of construction where the main load-bearing elements are hung from suspension cables.

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Answer:

3 m/s east

Explanation:

I took a test a got it right

Answer:

3 m/s east

Explanation:

Answer:

C. 199.9 s

Explanation:

3 minutes = 3×60 = 180 seconds.

the turtle moves in that time 180×10 = 1800 cm.

in other words the rabbit gave it that much head-start (it does not matter if that was at the begin of in the middle of the race).

the rabbit moves with 10×10cm/s = 100cm/s.

the rabbit needs therefore 1800/100 = 18 seconds for the

1800 cm.

at that time the turtle has added another 18×10 = 180 cm.

for which the rabbit needs 180/100 = 1.8 seconds.

during that time the turtle has added 1.8×10 = 18 cm.

and so on.

in formal mathematics this looks like this :

1800 + 10x = 100x

after x seconds of the rabbit running both will have run the same distance, and it is a tie.

1800 = 90x

x = 20 seconds

so, at that point, the rabbit was actively running for 20 seconds and raced 20×100 = 2000 cm

and the turtle was actively running for 180 + 20 = 200 seconds, and also covered 200×10 = 2000 cm.

but our question tells us that the turtle won by 10 cm.

so, the race was over a little bit before these 200 seconds (for a tie).

this means, the rabbit could not run the last 10 cm for the tie (because the race was over and the turtle had won).

the rabbit would have needed 10/100 seconds for these 10 cm.

as speed = distance/time

we need to divide distance by speed

distance/1 / distance/time

to get time.

so,

10cm/1 / 100cm/s = 10s/100 = 1/10 s

so, we need to deduct this 1/10 s from the 200 seconds of the turtle (and also from the 20 seconds for the rabbit).

the race lasted of course the whole time the turtle was running (while the rabbit was resting, officially still participating in the race with speed 0 for 3 minutes).

and so, the race was 199.9 s long.

The solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma.

The solar wind, which is a stream of charged particles (plasma) emitted by the Sun, exhibits characteristics of a highly ionized plasma. As it travels from the Sun to the Earth, the solar wind encounters variations in temperature, density, pressure, and speed. In this case, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, the solar wind can be classified as a highly ionized plasma.

During a Coronal Mass Ejection (CME), eruptive phenomena on the Sun's surface cause a sudden release of a large amount of plasma and magnetic fields into space. This disturbance leads to an increase in the temperature of the solar wind to around 10^7 K and an increase in its speed to approximately 10^3 km/s. This enhanced energy and velocity result in a significant disruption of the solar wind's flow, making it a turbulent fluid.

Turbulent fluids are characterized by chaotic and irregular motion, with strong fluctuations and mixing. The increased temperature and speed during a CME generate turbulent behavior within the solar wind, leading to the disruption and mixing of plasma particles along its trajectory.

To determine the type of fluid flow, the Reynolds number (Re) is often used. It relates the flow's characteristics, such as velocity and length, to the fluid's viscosity. In this case, since the solar wind is a plasma and has negligible viscosity, the Reynolds number is extremely high, well above the turbulent threshold of 4000. Therefore, the solar wind with increased temperature and speed due to a CME can be classified as a turbulent fluid.

In summary, the solar wind, with a constant temperature of 1.3x10^5 K and a speed of 450 km/s, is a highly ionized plasma. However, during a Coronal Mass Ejection (CME), the temperature and speed of the solar wind increase significantly, leading to turbulent fluid behavior.

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