a diatomic ideal gas undergoes an isothermal expansion from a volume of 1.1 m3 and pressure 63 kpa to a final volume of 2.8 m3. calculate the change in the internal energy in kj

Answer:

\(a=0.96\ m/s^2\)

Explanation:

Given that,

Mass of cabinet, m = 45 kg

Two horizontal force of 25 newtons and 18 newtons respectively in the same direction.

When the forces are acting in same direction, the net force is equal to the sum of forces i.e.

F = 25 N + 18 N = 43 N

Let a is the aceleration of the cabinet

So,

F = ma

\(a=\dfrac{F}{m}\\\\a=\dfrac{43}{45}\\\\a=0.96\ m/s^2\)

So, the acceleration of the cabinet is \(0.96\ m/s^2\).

No, the distance to a star cannot be determined strictly by the intensity of its radiation.

Stars emit radiation in the form of electromagnetic waves across the entire electromagnetic spectrum. This includes everything from radio waves, microwaves, and infrared radiation to visible light, ultraviolet radiation, X-rays, and gamma rays. The specific types and amounts of radiation emitted by a star depend on its temperature, size, age, and other properties.

Most of the radiation emitted by stars is in the form of visible light, which is what allows us to see them in the night sky. The colors of stars, ranging from red to blue, indicate their temperature, with cooler stars appearing redder and hotter stars appearing bluer.

In addition to visible light, stars also emit ultraviolet radiation, which can cause damage to living cells and is absorbed by the Earth's atmosphere. X-rays and gamma rays are also emitted by some stars, particularly those that are very hot or undergoing extreme nuclear reactions, and can only be detected with specialized telescopes.

The radiation emitted by stars plays an important role in shaping the universe, influencing the formation and evolution of galaxies, stars, and planets. It is also the source of energy that powers life on Earth, as it is ultimately responsible for driving photosynthesis in plants and other organisms.

Here in the Question,

The intensity of a star's radiation can provide valuable information about its properties, such as its luminosity and surface temperature, distance estimation requires additional measurements and calculations.

One way to determine the distance to a star is through the method of parallax. This involves observing the apparent shift in a star's position against the background of more distant stars as the Earth moves in its orbit around the Sun. The amount of shift is measured and used to calculate the star's distance.

Another method is the use of standard candles, which are objects of known intrinsic brightness, such as certain types of supernovae or Cepheid variable stars. By comparing the observed brightness of a standard candle with its known intrinsic brightness, astronomers can determine its distance based on the inverse square law of radiation, which states that the intensity of radiation decreases with the square of the distance.

Therefore, while the intensity of a star's radiation provides important information about its properties, it is not sufficient to determine the star's distance, which requires additional measurements and calculations.

To learn about thermal energy click:

https://brainly.com/question/14193449

#SPJ2

Answer:

a = 30 km / h²

Explanation:

Dado que

Velocidad inicial, u = 70 km / h

Velocidad final, v = 95 km / h

Tiempo, t = 30 s = 0.1 h

Lo sabemos

v = u + a t

a = aceleración

Ahora poniendo los valores en la ecuación anterior

\(95 = 70 + a \ times 0.1 \)

\(a = \ dfrac {95-70} {0.1} = 30 \ km / h ^ 2 \)

Por lo tanto, la aceleración será

a = 30 km / h²

Answer:

True

True

Explanation:

The time constant of the damping in this scenario is approximately 196.563136 seconds.

To find the time constant of the damping in seconds, we can use the formula:

t = -Δt / ln(A/A0)

Where:

- t is the time constant

- Δt is the change in time (in this case, 3 minutes, which is equal to 180 seconds)

- A is the final amplitude (2 m)

- A0 is the initial amplitude (5 m)

- ln denotes the natural logarithm

Substituting the given values into the formula, we have:

t = -180 / ln(2/5)

To calculate the time constant, let's substitute the given values into the formula:

t = -180 / ln(2/5)

t ≈ -180 / ln(0.4)

t ≈ -180 / (-0.9162907319)

t ≈ 196.563136 s

Learn more about pendulums at https://brainly.com/question/29835989

#SPJ11

The sample of the solid in grams is 5.5g

HOW TO CALCULATE SPECIFIC HEAT CAPACITY:

Q = m × c × ∆T

Where;

Q = quantity of heat absorbed/released (cal)

m = mass of the substance (g)

c = specific heat (cal/g°C)

∆T = change in temperature (°C)

Q = 7.90Kcal = 7900cal

m = ?

c = 11.5 cal/g°C

T1 = 135K = 135K − 273.15 = -138.1°C

T2 = 260K = 260K − 273.15 = -13.15°C

∆T = -13.15 - (-138.1) = 124.95°C

m = Q ÷ c∆T

m = 7900 ÷ (11.5 × 124.95)

m = 7900 ÷ 1436.93

m = 5.5grams.

Therefore, the sample of the solid in grams is 5.5g.

Learn more: https://brainly.com/question/21643161?referrer=searchResults

Answer: I think the answer is d

Explanation: sry if wrong

Answer:

5 m/s north

Explanation:

Average velocity is total displacement over total time. Displacement means change in position or a distance between initial position to final position.

In mathematically, average velocity can be expressed as:

\(\displaystyle{\vec{v}_\sf{average}} = \dfrac{\sum \vec{s}}{\sum t}}\)

Where \(\displaystyle{\vec v}\) is velocity, \(\displaystyle{\vec s}\) is displacement and \(\displaystyle{t}\) is time. You may notice the sigma notation \(\displaystyle{\sum}\), that denotes the sum of displacement and time (total displacement and total time).

A runner travels 250 meters north 50 seconds. Therefore, we know that the displacement changes from origin position (0 meter) to 250 meters up the north. Therefore, the displacement is 250 meters north and time is 50 seconds.

Therefore, substitute in the formula:

\(\displaystyle{\vec{v}_\sf{average}} = \dfrac{250}{50}}\\\\\displaystyle{\vec{v}_\sf{average}} = 5 \ \, \sf{m/s \ \, north}}\)

Therefore, the average velocity is 5 m/s north.

Equation of motion: To find the equation of motion and the oscillation frequency of a mass-spring system, we'll use Newton's second law of motion.

Force (F) = mass (m) × acceleration

F = ma

The force acting on a spring is given by Hooke's law:

F = -k x

where k is the spring constant and x is the displacement from the equilibrium position.

Thus, combining these two equations gives us the following equation of motion for a mass-spring system:

ma = -k x

Rearranging this, we get:

m(d²x/dt²) + k x = 0

This is the differential equation of motion of the mass-spring system.

Oscillation frequency:

The oscillation frequency can be calculated using the equation:

f = (1/2π) √(k/m)

where f is the frequency, k is the spring constant, and m is the mass.

Lagrange function:

The Lagrange function for a mass-spring system can be written as:

L = T - VL

is the difference between the kinetic energy (T) and potential energy (V) of the system.

The kinetic energy of the system is given by:

T = (1/2) mv²where m is the mass and v is the velocity.

The potential energy of the system is given by:

V = (1/2) kx²

where k is the spring constant and x is the displacement from the equilibrium position.

L = (1/2) mv² - (1/2) kx²

Equation of motion:

Using the Euler-Lagrange equation, the equation of motion for a mass-spring system can be derived.

It is given by:

d/dt (∂ L/∂v) - ∂L/∂x = 0

Substituting the values from the Lagrange function:

L = (1/2) mv² - (1/2) kx²∂L/∂v = m v ∂L /∂x = -k x.

To know more about equation visit:

https://brainly.com/question/29657983

#SPJ11

Answer:

Given Mas (m) =63kg

velocity (v) =4.3m/s

momentum (p) =?

p=mv

63kgx4.3m/s

270.9kg.m/s

the momentum =270.9kg.m /s

If a ball of mass 0.63 kilograms is moving at 4.3 meters/seconds, then the momentum of the ball would be 2.709-kilogram meters/second.

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle.

Momentum = mass of the object × velocity of the object

As given in the problem we have to calculate the momentum of the ball if it has a mass of 0.63 kilograms and moving with a speed of  4.3 meters/seconds,

The momentum of the ball = 0.63× 4.3

                                             =2.709 kilogram meters/second

Thus, the momentum of the ball comes out to be 2.709-kilogram meters/second.

To learn more about momentum from here, refer to the link;

brainly.com/question/17662202

#SPJ2

In Ampere's law, B· ds = μ₀i, the integration must be over any: closed path.

So, the correct answer is D.

Ampere's law states that the integral of the magnetic field (B) around a closed path is equal to the product of the permeability of free space (μ₀) and the total current (i) enclosed by the path.

Mathematically, it is represented as B·ds = μ₀i.

In this equation, the integration must be over any "D. closed path."

This closed path is often referred to as an Amperian loop.

It is important that the path is closed because it ensures that the net magnetic field around the loop is considered, taking into account both the sources and sinks of the magnetic field.

Learn more about Ampere's law at

https://brainly.com/question/31829445

#SPJ11

Answer:

Heat

Explanation:

Because chemical energy is stored, it is a form of potential energy. When a chemical reaction takes place, the stored chemical energy is released. Heat is often produced as a by-product of a chemical reaction – this is called an exothermic reaction.

Hope this helped.

Explanation:

Answer Should be B.

Its in Form of Heat.

Answer:

kamalong with me to the butter fly and bee

Answer:

A

Explanation:

An object reaches top velocity for its mass, then it falls at that same speed until a force acts on it

Answer:

ancient astronomy is back in the 1600s and is really old and modern astronomy is present and astronomy today

Time period and technology are the main differences between ancient and modern astronomy.

The main differences between ancient and modern astronomy is the era in which they were created and developed. The ancient astronomy developed by Greeks and technology for study is very old. The first documented records of systematic astronomical observations occurs in Assyro-Babylonians around 1000 BCE.

While on the other hand, modern astronomy refers to the astronomy that is developed in this modern period and use advance technology. Modern astronomy includes many elements of the motions as well as characteristics of moving bodies so we can conclude that time period and technology are the main differences between ancient and modern astronomy.

Learn more: https://brainly.com/question/18659457

System B is in a saturated liquid phase. This is because when the pressure is lower than the saturated vapor pressure, the substance can no longer exist in the vapor phase and instead condenses into the liquid phase.

A saturated liquid is a fluid that is at its boiling point, meaning that any further decrease in pressure without a temperature change will cause it to start boiling. In other words, the pressure of the liquid is equal to the vapor pressure of the liquid at the given temperature. This means that the liquid is “saturated” with vapor and any further decrease in pressure will cause the liquid to vaporize.

To know more about pressure please refer:

https://brainly.com/question/29341536

#SPJ4

The deflection of the pointer when the power supply is turned on is expected to be towards the positive side. Here's why A galvanometer is an instrument that is used to measure the flow of current in a circuit. It consists of a coil that is placed inside a magnetic field.

When a current passes through the coil, it experiences a force that causes it to move.The direction of the movement of the coil depends on the direction of the current passing through it. If the current is flowing in one direction, the coil will move in one direction. If the current is flowing in the opposite direction, the coil will move in the opposite direction.The deflection of the pointer in a galvanometer depends on the direction of the current flowing through the coil. When the power supply is turned on, a current will start flowing through the coil in the galvanometer. Since the coil is placed inside a magnetic field, it will experience a force that causes it to move.

The direction of the force that the coil experiences is determined by the direction of the current flowing through it and the direction of the magnetic field. Since the magnetic field is fixed, the direction of the force depends on the direction of the current. If the current is flowing in one direction, the force will be in one direction. If the current is flowing in the opposite direction, the force will be in the opposite direction.The deflection of the pointer will be towards the positive side if the current flowing through the coil is in the same direction as the magnetic field. If the current is flowing in the opposite direction, the deflection will be towards the negative side.

To know more about galvanometer visit :

https://brainly.com/question/30922468

#SPJ11

The mass of the car is calculated as 1021.86 kg. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Given information: Acceleration of the car = 1.83 m/s²

Force acting on the car = 1870 N

We know that Force = mass × acceleration

According to the question, we need to find the mass of the car. We can calculate the mass of the car by using the formula: mass = Force / acceleration

Putting the values in the above equation, we get mass = 1870 N / 1.83 m/s²

So, the mass of the car is: mass = 1021.86 kg

Therefore, the mass of the car is 1021.86 kg.

To know more about mass, refer

https://brainly.com/question/86444

#SPJ11

Sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.

We know that sound is a wave whose medium of propagation isthrough matter. Hence, sound move faster in a dense object than in a less dense object.

As such, sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.

Learn more about density: https://brainly.com/question/12980705

When you are inhaling, the intrapulmonary pressure is less than the atmospheric pressure.

What is intrapulmonary pressure? Intrapulmonary pressure (P pulmonale) is the pressure inside the lungs, which decreases when the diaphragm and intercostal muscles contract, expanding the lung volume and lowering the air pressure inside the lungs.

The air is then compelled to move from the region of higher pressure outside the body to the region of lower pressure inside the lungs.

According to Boyle's law, which states that the pressure of a given mass of gas is inversely proportional to its volume at a fixed temperature, the decrease in intrapulmonary pressure during inhalation results in the air being drawn into the lungs.

What happens when we inhale? Inhalation, also known as inspiration, is the process of breathing in air, which involves the diaphragm contracting and flattening, and the intercostal muscles contracting to increase the thoracic cavity's size. This reduces intrapulmonary pressure and causes air to be drawn into the lungs.

To know more about  intrapulmonary pressure, refer here:

https://brainly.com/question/15300008#

SPJ11#

A photon with a wavelength of 250 nm falls within the ultraviolet (UV) region of the electromagnetic (EM) spectrum.

The EM spectrum ranges from high-energy gamma rays with very short wavelengths to low-energy radio waves with very long wavelengths. In between, there are various regions including X-rays, ultraviolet, visible light, infrared, and microwave.

The UV region is the region of the EM spectrum that has shorter wavelengths and higher energies than visible light. It is located between the visible and X-ray regions and is divided into three subregions: UV-A (320-400 nm), UV-B (280-320 nm), and UV-C (100-280 nm). A photon with a wavelength of 250 nm falls within the UV-C region, which has the shortest wavelengths and the highest energy photons within the UV region.

To learn more about photon Click here:

brainly.com/question/29254702

#SPJ4

Psychological research gives us information about the research that psychologists conduct for systematic study and for analysis of the experiences and behaviors of individuals or groups.

There are two ways in which psychological research is based and that is the research being androcentric and ethnocentric. Examples of this include the theory of personality and the attachment of the theory.

There are many more biases is well in psychological research which are Citation bias, Language bias, and Outcome reporting bias. The citation bias includes whether the research receives citations or not. Language bias includes when research is published in one language over another. The outcome reporting bias includes that when only some outcomes are reported from a study.

So we can conclude that there are two ways in which early psychological research was biased and that are; when research is androcentric and ethnocentric.

Learn more about Psychology here: https://brainly.com/question/12011520

#SPJ1

Answer:

hi

Explanation:

bye

\(\\ \rm\longmapsto I=\dfrac{Q}{t}\)

\(\\ \rm\longmapsto Q=It\)

\(\\ \rm\longmapsto Q=2.72\times 9.88\)

\(\\ \rm\longmapsto Q=26.87C\)

The amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

Electric charge is quantized, meaning it exists in discrete amounts and is measured in coulombs (C). The elementary charge, represented by the symbol "e," is the charge of a single proton or electron, approximately equal to 1.602 x 10^-19 coulombs. Protons carry a positive charge, while electrons carry an equal but opposite negative charge.

When electric charges are stationary, they create an electric field around them. When charges are in motion, they produce a magnetic field in addition to the electric field, leading to electromagnetic effects.

Charge is a fundamental property of matter that determines its interaction with electric and magnetic fields and is crucial to understanding and explaining various electrical and electromagnetic phenomena in the natural world.

To calculate the amount of charge that flows past a point in the wire use the equation:

Q = I * t

Where:

Q is the charge (in Coulombs)

I is the current (in Amperes)

t is the time (in seconds)

Given:

Current (I) = 2.72 A

Time (t) = 9.88 s

Substitute these values into the equation to find the charge:

Q = I t

Q = 2.72 A * 9.88 s

Calculating the product:

Q = 26.8976 C

Therefore, the amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

To know more about flows

https://brainly.com/question/28494347

#SPJ2

Answer:

A

Explanation:

The kinetic energy decreases to half its original value.

This question can be solved by using the equations of motion.

a) The initial speed of the arrow is was "9.81 m/s".

b) It took the arrow "1.13 s" to reach a height of 17.5 m.

a)

We will use the second equation of motion to find out the initial speed of the arrow.

\(h= v_it + \frac{1}{2}gt^2\\\)

where,

vi = initial speed = ?

h = height = 35 m

t = time interval = 2 s

g = acceleration due to gravity = 9.81 m/s²

Therefore,

\(35\ m = (v_i)(2\ s)+\frac{1}{2}(9.81\ m/s^2)(2\ s)^2\\\\v_i(2\ s)=19.62\ m\\\\v_i = \frac{19.62\ m}{2\ s}\)

vi =  9.81 m/s

b)

To find the time taken by the arrow to reach 17.5 m, we will use the second equation of motion again.

\(h= v_it + \frac{1}{2}gt^2\\\)

where,

g = acceleration due to gravity = 9.81 m/s²

h = height = 17.5 m

vi = initial speed = 9.81 m/s

t = time = ?

Therefore,

\(17.5 = (9.81)t+\frac{1}{2}(9.81)t^2\\4.905t^2+9.81t-17.5=0\)

solving this quadratic equation using the quadratic formula, we get:

t = -3.13 s (OR) t = 1.13 s

Since time can not have a negative value.

Therefore,

t = 1.13 s

Learn more about equations of motion here:

brainly.com/question/20594939?referrer=searchResults

The attached picture shows the equations of motion in the horizontal and vertical directions.

The magnitude of the horizontal net force required to bring the car to a halt in a distance of 50.0 m is 2370 N.

What is force?

Force is a quantity that describes the interaction between two objects or systems. It is a vector quantity, meaning it has both magnitude (size or strength) and direction. Forces can cause changes in an object's motion, shape, or internal energy.

The magnitude of the horizontal net force required to bring the car to a halt in a distance of 50.0 m can be calculated using the equation:

force = (mass * velocity^2) / (2 * distance)

where mass is the mass of the car, velocity is the initial velocity of the car, and distance is the distance over which the car is brought to a halt.

Plugging in the given values, we get:

force = (1580 kg * 150 m/s^2) / (2 * 50.0 m)

force = (237,000 N) / 100

force = 2370 N

Hence, the magnitude of the horizontal net force required to bring the car to a halt in a distance of 50.0 m is 2370 N.

To learn more about force from the given link:

https://brainly.com/question/25239010

#SPJ4

Answer:

Percent Error  =  67.86%

Explanation:

The percent error can be calculated using the following equation:

                              | measured value - true value |
Percent Error  =  -------------------------------------------------  x 100%
                                              true value

In this equation,

---> The "measured value" is the value found after performing an experiment.

---> The "true value" is the value you expect to find after performing an experiment.

In this case,

---> measured value = 4.5 g/cm³

---> true value = 14.0 g/cm³

                              | 4.5 g/cm³ - 14.0 g/cm³ |
Percent Error  =  ----------------------------------------  x  100%     <----- Insert values
                                         14.0 g/cm³

                               | -9.5 g/cm³ |
Percent Error  =  ------------------------  x  100%                 <----- Subtract
                                 14.0 g/cm³

                                  9.5 g/cm³
Percent Error  =  ------------------------  x  100%                 <----- Take absolute value
                                 14.0 g/cm³

     
Percent Error  =  0.6786  x  100%                                 <----- Divide

Percent Error  =  67.86%                                              <----- Multiply
                                 

Answer:

3.6 Km..........................................

Answer:Adolescent chastity can be defined as the absolute abstinence from sex and anything related to sex, such as, kissing, touching, fondling

Explanation: