It is essential to behave appropriately on social media and be _______ when you post anything.

Answer:

Power

Explanation:

Power is defined as the rate of doing work with reference to the time spent and the formula is force multiplied by velocity.

In this case, if two people lift identical stacks of books the same distance and one person does the job twice as fast, then it means the velocity in the case is doubled which will also lead to an increase in the Power .

The formula for power is Work divided by time taken, so P=W/T.

That case, involved power, since one of the people did work twice as fast, but, it was the same amount of work each person did, for the same distance (not exact distance, but usually the same)

The wavelength of the scattered radiation is approximately the same as the incident wavelength.

When X-rays pass through a material, they can scatter off the electrons within the material. This is known as Compton scattering. During this process, some of the energy of the X-rays is transferred to the electrons, causing them to move. As a result, the scattered X-rays have a longer wavelength than the incident X-rays.

The change in wavelength of the scattered X-rays can be calculated using the Compton formula:

Δλ = h/mc (1 - cosθ)

where Δλ is the change in wavelength, h is Planck's constant, m is the mass of the electron, c is the speed of light, and θ is the scattering angle.

In this problem, the incident X-rays have a wavelength of 0.0811 nm and scatter at an angle of 83.1 degrees. We can convert the angle to radians by multiplying by π/180:

θ = 83.1° × π/180 = 1.449 radians

Substituting the given values into the Compton formula, we get:

Δλ = (6.626 × 10⁻³⁴ J s)/(9.109 × 10⁻³¹ kg)(3 × 10⁸ m/s)(1 - cos 1.449)

Δλ ≈ 3.55 × 10⁻¹² m

The scattered wavelength is the sum of the incident wavelength and the change in wavelength:

λ' = λ + Δλ

λ' = 0.0811 nm + 3.55 × 10⁻¹²m.

λ' ≈ 0.0811 nm

Therefore, the wavelength of the scattered radiation is approximately the same as the incident wavelength.

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Answer:

60

Explanation:

(hint: speed = distance/time)

The average speed for this trip will be \(\rm 60 mile\ hr^{-1}\). The ratio of the total distance and time is average velocity.

The total distance traveled by an object divided by the total time taken is the average speed.

The average speed of an object indicates the pace at which it will traverse a distance. The metric unit of speed is the meter per second.

The given data in the problem is;

t is the time taken = 5 hour

d is the distance tyravelled=300 miles

The average velocity is found as;

\(\rm v_{avg} = \frac{d_{total}}{t{total}} \\\\\ \rm v_{avg} = \frac{300}{5} \\\\ \rm v_{avg} = 60 mile\ hr^{-1}\)

Hence the average speed for this trip will be \(\rm 60 mile\ hr^{-1}\)

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Answer:

This

Explanation:

Khan academy answer

The mass of the refrigerator can be calculated using Newton's second law of motion. Given that a force of 20 N causes the refrigerator to accelerate at 2 m/s², the mass of the refrigerator is 10 kg.

Newton's second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. Mathematically, it can be represented as F = m * a, where F is the force, m is the mass, and a is the acceleration.

In this scenario, a force of 20 N is applied to the refrigerator, resulting in an acceleration of 2 m/s². We can rearrange the formula to solve for mass, which gives us m = F / a. Plugging in the values, we have m = 20 N / 2 m/s², which simplifies to m = 10 kg. Therefore, the mass of the refrigerator is 10 kg.

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The kinetic energy of the truck is 44,287,500 J as per the given data.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it.

The kinetic energy (K) of an object can be calculated using the formula:

\(K = 0.5 Xm X v^2\)

Where,

m = mass of the object

v = velocity

Plugging in the values given in the question, we have:

\(K = 0.5 X 2900 X (55 m/s)^2\)

\(K = 0.5 X 2900 X 3025 m^2/s^2\)

K = 44,287,500 J (joules)

So, the kinetic energy of the truck is 44,287,500 J.

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Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

The answer for Eating food from a uranium glass plate is safer is Choice C which is food is irradiated / not contaminated.

It is safer to eat food from a uranium glass plate because the uranium added to the glass will always be in the oxidized form used to color it. The uranium added to the glass will also be not soluble thus it will not be radioactive.

Thus, the reason for eating food safely from the uranium glass plate is it will not be contaminated

The other two options(alpha cannot penetrate skin or body and contains a low percentage of uranium) will be wrong because the plate will be completely non-radioactive.

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The value of the force on particle 1 is -14.41 N.

The distance (r) of force F₁ in the diagram is 0.25 m.

The value of the force on particle 1 is calculated by applying Colomb's law as follows;

F₁ = (k q₁q₂) / ( r²)

where;

The value of the force on particle 1 is calculated as follows;

F₁ = (k q₁q₂) / ( r²)

F₁ = (9 x 10⁹  x 13 x 10⁻⁶ x 7.7 x 10⁻⁶) / ( 0.25²)

F₁ = -14.41 N

Thus, the value of the force on particle 1 is determined as -14.41 N.

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Answer:

balloon is rigid the amount of gas is constant inside the interior pressure of the balloon is constant and in these cities it becomes equal to or slightly higher than atmospheric pressure

Explanation:

Este ejercicio es referente a la mecánica de fluidos, usemos la expresión para la presión  

       P = ρ g h

En es el caso del balón  usemos la presión en la pared extrema, llamemos P la presión por el gas en el interior y P_ext la presión atmosférica del lugar

        cuando se llena el valor en una ciudad de baja altura la presión atmosférica es mas alta

          P_int1 < P_ext1

por lo cual la pared del balón no se mantiene rígida.

Cuando el balón es trasladado a una ciudad con mayor altura sobre el nivel del mar la presión exterior disminuye

       P_ext2 = ρ g h₂ < P_ext1

en promedio la presión disminuye con la altura  en 0,029 atm cada 250 m

por lo tanto como la cantidad de gas es constante en el interior la presión interior del globo es constante y en esta ciudades se hace igual o un poco mayor que la presión atmosférica, en consecuencia la pared del globo esta rígida

        P_int2 >P_ext2

Traslate

This exercise is related to fluid mechanics, let's use the expression for pressure

       P = ρ g h

In the case of the balloon, let's use the pressure on the extreme wall, let's call P the pressure for the gas inside and P_ext the atmospheric pressure of the place

        when the value is filled in a low-lying city the atmospheric pressure is higher

          P_int1 <P_ext1

therefore the wall of the ball does not remain rigid.

When the ball is transferred to a city with higher altitude above sea level, the external pressure decreases

       P_ext2 = ρ g h <P_ext1

on average the pressure decreases with height by 0.029 atm every 250 m

therefore as balloon is rigid the amount of gas is constant inside the interior pressure of the balloon is constant and in these cities it becomes equal to or slightly higher than atmospheric pressure, therefore the wall of the

        Pint 2> Pe

Answer:

artist

Explanation:

Answer:

Inner planets are small because the heat of the Sun baked off the hydrogen. The outer planets are large because they were colder and did not get the hydrogen baked off. Among the outer planets, they get smaller as you get further out because they formed nearer the edge of the cloud that supplied the material. There was just less to build from.

The distance to the first maximum on a screen beyond the slits is 0.009512 m.

It is given that,

The wavelength of the monochromatic light = 694 nm

It is given that, monochromatic light is incident on two parallel slits.

We have to determine the value of the distance y to the first maximum on a screen beyond the slits

As we know,

The distance to the first maxima is given as,

\(\mathrm{y} & =\frac{\lambda \mathrm{D}}{\mathrm{d}} \\\), y = distance to first maxima.

λ= wavelength of light

d = distance between slits

D = distance between slits and screen

From above given equation,

The value of distance y to the first maxima will be:

\(& =\frac{694 \times 10^{-9} \times 3.18}{0.232 \times 10^{-3}} \\\\ =0.009512 \mathrm{~m}\)

Hence the distance to the first maxima is 0.009512 m

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The missing diagram is attached:

Right description: Your hand does not experience a flow of cold from the ice.

Heat will transfer from a warmer object to a colder one if the temperatures of the two objects differ. For instance, when you hold an ice cube, heat from your warm hand is transmitted to the cold ice, melting it. Due to heat energy loss, your hand feels cold.

It is accurate to state that a rise in one object's thermal energy equals a decrease in the other's thermal energy, not temperature. The claim is true if the substance of the hot and warm objects is the same.

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The height, h to which the package of mass m bounces to depends on its initial velocity, v and the acceleration due to gravity, g and is given below:

\(h = \frac{v^{2}}{2g}\)

Perfectly elastic collisions are collisions in which the momentum as well as the energy of the colliding bodies is conserved.

In perfectly elastic collisions, the sum of momentum before collision is equal to the momentum after collision.

Also, the sum of kinetic energy before collision is equal to the sum of kinetic energy after collision.

Since some of the Kinetic energy is converted to potential energy of the body;

\(\frac{mv^{2}}{2} = mgh\)

\(h = \frac{v^{2}}{2g}\)

Therefore, the height to which the package m bounces to depends on its initial velocity and the acceleration due to gravity.

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The equation of the force between the two masses separated by distance r, is determined as Gmm/r².

The equation of the force between the two masses is determined from Newton's law of universal gravitation as shown below.

f = Gmm/r²

where;

Thus, the equation of the force between the two masses separated by distance r, is determined as Gmm/r².

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Answer: D. -5

It is -5 because you subtract 13 from 8 to get to the answer.

Answer:

d -5 m

Explanation:

bc 8 subtract by 13 = 5

Answer:

All extended structure compounds form cubes. Sodium and chlorine atoms both have cubical shapes. In the extended structure of NaCI, atoms are arranged in a cubical pattern

A resume is usually read for less than C. 30 seconds by an employer.

A resume is a document that presents your educational qualifications, experiences, and achievements that have taken place throughout your academic career and professional life. This document is crucial in a job application process, and it plays a key role in determining whether an employer is interested in interviewing you or not. Thus, it is necessary to write a well-written and a concise resume that catches the employer's attention in less than 30 seconds. This is because most employers go through many job applications and they do not have much time to read every resume thoroughly.

Therefore, it is essential to organize and format the resume in such a way that the key information and skills stand out. In addition, it is necessary to customize the resume to fit the job requirements of each job application, this can be done by researching the company and the job position to determine what skills and qualifications the employer is looking for. In conclusion, it is crucial to ensure that the resume is well-written, organized, and customized to fit the employer's requirements. So the correct answer is C. 30.

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Answer:

Tt can be calculated by copy

When a meter stick is moving directly towards you, your measurement of the speed of the headlight light will still be approximately 299,792 kilometers per second (the speed of light).

The speed of light is constant and doesn't change based on the observer's relative motion, according to the theory of special relativity developed by Albert Einstein. When the meter stick (or any object) with a headlight is moving towards you, the light emitted from the headlight travels at the same speed (approximately 299,792 km/s) as it would if the meter stick were stationary.

This is because the speed of light is the same for all observers, regardless of their motion or the motion of the light source. Thus, your measurement of the speed of the headlight light remains constant, irrespective of the movement of the meter stick.

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If the same pressure is exerted over a greater area, less force will result. Option A

This is because pressure is defined as force per unit area. If the area over which the pressure is exerted is increased, then the same amount of force is distributed over a larger area, resulting in a decrease in pressure.

This decrease in pressure results in a decrease in the force that is exerted.

A simple way to visualize this is to imagine pressing your hand against a wall. If you press with a small area, such as the tip of your finger, you will feel a greater force against your finger. However, if you press with the palm of your hand, which has a larger area, you will feel less force against your hand.

This principle is used in many everyday applications. For example, car tires are inflated to a certain pressure to distribute the weight of the car over a larger area, resulting in less force exerted on the road and better traction.

Similarly, snowshoes distribute the weight of a person over a larger area, allowing them to walk on top of deep snow without sinking in. So Option A is correct.

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True. If it is safe, you may travel at the posted 65mph when towing a trailer on a 65-MPH posted highway.
True. When towing a trailer on a highway with a posted speed limit of 65-MPH, you may travel at the posted 65-MPH if it is safe to do so.

Always ensure proper control and stability while towing, and adjust your speed as necessary for road conditions and traffic. This Ministry is primarily responsible for the development and maintenance of National Highways (NHs). The Ministry keeps on receiving proposals from various State Governments/Union Territories (UTs) for the declaration of State roads as new National Highways (NHs). The Ministry considers the declaration of some State roads as new NHs from time to time based on the requirement of connectivity, inter-se priority, and availability of funds.

The declaration of State roads as new NHs is considered based on well-established principles; the criteria for State roads for declaration as new NHs include roads running through the length/breadth of the country, connecting adjacent countries, National Capitals with State Capitals / mutually the State Capitals, major ports, non-major ports, large industrial centers or tourist centers.

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It is generally true that you can travel at the posted speed limit when towing a trailer, if it is safe to do so. However, some jurisdictions may impose lower speed limits for vehicles towing trailers. Safety and local traffic laws should always be prioritized.

The answer to your question, 'When towing a trailer on a 65-MPH posted highway, if it is safe, you may travel at the posted 65mph' is generally true. However, it is important to note that specific laws and regulations may vary depending on the jurisdiction or state you are in. Some jurisdictions may impose a lower speed limit for vehicles towing trailers regardless of the general speed limit. Safety must always be your primary concern, making sure the trailer is properly hitched, and the load is balanced to prevent swaying or instability at high speeds. It would be best to research the specific traffic rules and regulations in the area you plan on towing to ensure that you are abiding by all laws.

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1) They would collide with the walls more frequently

2) They would collide with the walked more frequently

We know that collisions occur when there is a bump of an object against an obstacle. In the case of the scenario that we have here, we have been told that there are 50 people walking in straight lines in a room. If we move the walls to half the size they would collide with the walls more frequently.

In the second case, if the people that were walking in a straight line now begin to run, the chances are that they would collide with the walls more frequently.

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Answer:

1. T₁ = 500 N

2. T₂ = 866 N

Explanation:

Please see attached photo for the diagram.

Thus, we can obtain obtained the value of T₁ and T₂ as follow:

1. Determination of T₁

Angle θ = 30

Hypothenus = 100 kg

Opposite = T₁ =?

Sine θ = Opposite /Hypothenus

Sine 30 = T₁ / 100

Cross multiply

T₁ = 100 × Sine 30

T₁ = 100 × 0.5

T₁ = 50 Kg

Multiply by 10 to express in Newton

T₁ = 50 × 10

T₁ = 500 N

2. Determination of T₂

Angle θ = 60

Hypothenus = 100 kg

Opposite = T₂ = ?

Sine θ = Opposite /Hypothenus

Sine 60 = T₂ / 100

Cross multiply

T₂ = 100 × Sine 60

T₂ = 100 × 0.8660

T₂ = 86.6 Kg

Multiply by 10 to express in Newton

T₂ = 86.6 × 10

T₂ = 866 N

Respuesta: T2 = 131.04K

Explicación: Dado lo siguiente:

Presión, P1 = 1.5 atm = 1.5 × 760 = 1140 mmHg

Presión, P2 = 1.2 atm = 1.2 × 760 = 912 mmHg

Volumen, V1 = 500cm3 Volumen, V2 = 300cm3

Temperatura, T1 = 273K Temperatura, T2 =?

Usando la fórmula de gas combinada:

P1V1 / T1 = P2V2 / T2

Ingresando nuestros valores:

(1140 × 500) / 273 = (912 × 300) / T2

T2 × (1140 × 500) = 912 × 300 × 273

T2 = 74692800/570000 T2 = 131.04K