what sign for δs do you expect when the pressure on 0.860 mol of an ideal gas at 350 k is increased isothermally from an initial pressure of 0.760 atm ?

Answer:

0.04 m/s2

Explanation:

Answer:

0.04 m/s2

Explanation:

Answer:

Below

Explanation:

They are not equivalent. but to find out the mass which weighs Newtons

   divide Newtons by 'g '         Newtons/ (9.81 m/s^2) = KG   (on earth)

Water reabsorption by increasing aquaporin insertion into membranes, increases facilitated diffusion of water into cells, while ADH inhibits water excretion by blocking aquaporin removal from the plasma membrane.

Aquaporins are a group of small, integral membrane proteins that function as water channels to facilitate the transfer of water through the plasma membrane. These proteins are ubiquitous in cell membranes and are found in many different cell types, including kidney cells. Aquaporin insertion into the membranes increases the facilitated diffusion of water into cells, thereby promoting water reabsorption.

Antidiuretic hormone, or ADH, regulates water balance in the body by controlling the amount of water that is excreted in the urine. When the body is dehydrated, ADH is secreted, which decreases urine output by blocking aquaporin removal from the plasma membrane. This increases water reabsorption, which helps to maintain water balance in the body.

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At aphelion, the Earth is 96% of the Earth-sun distance at aphelion which means that the correct statement is that at aphelion, because the gravitational attraction is lower, the speed of the Earth is higher and is denoted as option B.

This is referred to as the  farthest point in the orbit of a planet such as the earth from the sun.

In a a scenario where the Earth is 96% of the Earth-sun distance at aphelion, then it means that the orbit has almost been completed which means that a high amount of speed was involved in the process.

This is as a result of the gravitational attraction being lower which has an inverse relationship with the speed of the Earth which is why it was higher and is therefore the reason why option B was chosen.

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Answer:

One way to distinguish between samples of metal and nonmetal with the help of a hammer is by conducting a simple test called the "ring test." This test involves striking the sample with the hammer and listening for the sound it makes. Metals typically produce a clear, ringing sound when struck, while nonmetals produce a dull, thudding sound. Additionally, you can use a magnet to test if the sample is metal or not. If the sample is attracted to the magnet, it's likely to be a metal, if not it's likely to be a nonmetal.

Answer:

Reflection involves a change in direction of waves when they bounce off a barrier. Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

Explanation:

Answer:

The thermal efficiency, \(\eta _{reheat}\), of the Rankine cycle with reheat is 36.81%

Explanation:

p₁ = 8 MPa = 80 Bars

T₁ = 450°C = 723.15 K

From steam tables, we have;

v₁ = 0.0381970 m³/kg

h₁ = 3273.23 kJ/kg

s₁ = 6.5577 kJ/(kg·K) = s₂

The p₂ = 0.8 MPa

T₂ = Saturation temperature at 0.8 MPa = 170.414°C = 443.564 K

h₂ = 2768.30 kJ/kg

\(T_{2'}\) = 400°C = 673.15 K

\(h_{2'}\) = at 400°C and 0.8 MPa = 3480.6 kJ/kg

p₃ = 10 kPa = 0.1 Bar

T₃ = Saturation temperature at 10 kPa = 45.805 °C = 318.955 K

h₃ = 2583.89 kJ/kg

h₄ = \(h_{3f}\) = 191.812 kJ/kg

The thermal efficiency, \(\eta _{reheat}\), of a Rankine cycle with reheat is given as follows;

\(\eta _{reheat} = \dfrac{\left (h_{1}-h_{2} \right )+\left (h_{2'}-h_{3} \right )-W_{p}}{h_{1}-\left (h_{4}+W_{p} \right )+\left (h_{2'}-h_{2} \right )}\)

Therefore, we have;

\(\eta _{reheat} = \dfrac{(3273.23 -2768.30 ) + (3480.6 -2583.89 ) - 8.04)}{(3273.23 -(191.812 + 8.04) + (3480.6 -2768.30 ) } = 0.3681\)

Which in percentage is 36.81%.

Answer:

It works best when the compound is very soluble in a hot solvent, but very insoluble in the cold version of the same solvent. The compound must be a solid at room temperature.

Explanation:

Recrystallization is an appropriate technique for purification when the compound to be purified is a solid and is relatively pure to begin with.

It is also appropriate when the impurities are soluble in the solvent at room temperature and the compound to be purified is not. This allows for the impurities to be removed while the desired compound remains as a solid.

Additionally, recrystallization is appropriate when the compound has a relatively high melting point, as this prevents it from dissolving in the solvent at room temperature.

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Answer:

Circuit

Explanation:

because a roughly circular line, route, or movement that starts and finishes at the same place.

This question can be solved by using the concepts of electrical energy, electricity, circuit, and electric current.

The flow of electricity from one place to another is called "Electrical Energy".

The electric current or electricity is defined as the rate of flow of electric charges from one point to another point, along a path known as a circuit. Electrical energy is caused by the movement of electric charges or the electric current from one point to another point of the circuit.

Therefore, this flow of electricity or electric current from one place to another place is termed Electrical Energy.

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The attached picture shows examples of electrical energy.

Based on what we know, we can confirm that this effect is often referred to as the Parallax effect.

This effect explains the differences that we see when performing this experiment with the pencil. It attempts to explain the difference in the apparent position that we see when viewing the pencil from differing lines of sight. This has to do with the change in the angle we are viewing from when we switch eyes.

Therefore, we can confirm that this effect is often referred to as the Parallax effect.

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Answer:

Explanation:

Given:

V = 15 m/s

a = 2 m/s²

__________

A) t - ?

B) D - ?

С) V₁ - ?

   V₂ - ?

A) Willy equation of motion:

X₁ = V·t

Wheeler's equation of motion:

X₂ = a·t² / 2

X₁ = X₂

V·t = a·t² / 2

V = a·t / 2

Time:

t = 2·V / a = 2·15 / 2 = 15 s

B)

Distance:

D = a·t² / 2 = 2·15² / 2 = 225 m

C)

Speed Willy:

V₁ = 15 m/s

Speed Wheeler:

V₂ = a·t = 2·15 = 30 v/s

V₂ > V₁

Answer:

200J

Explanation:

Given parameters:

Mass of sledgehammer  = 6kg

Distance  = 2m

Force applied  = 100N

Unknown:

Work done = ?

Solution:

Workdone is the force applied to move a body through a certain distance;

   Work done  = Force x distance

 Work done  = 100 x 2 = 200J

Answer:

I THINK ITS B but I'm not suresorry

The maximum distance at which the eye can resolve two headlights at night, given a pupil diameter of 0.4 cm, is approximately 11,937.3 meters or 11.937 kilometers.

To calculate the maximum distance at which the eye can resolve two headlights at night, we can use the formula for the angular resolution of the human eye, which is based on the Rayleigh criterion:

θ = 1.22 * (λ / D)

Where:
θ = angular resolution in radians
λ = wavelength of light (average wavelength of visible light is approximately 550 nm, or 5.5 x 10^-7 meters)
D = diameter of the aperture (pupil diameter, given as 0.4 cm or 0.004 meters)

First, calculate the angular resolution:

θ = 1.22 * (5.5 x 10^-7 m / 0.004 m) = 1.678 x 10^-4 radians

Now, to find the maximum distance (d) at which the eye can resolve two headlights, we can use the formula

d = L / tan(θ)
Where:
L = distance between the headlights (assuming a standard separation of 2 meters)
Before calculating, we need to make sure that the angular resolution (θ) is in the same unit (radians) as the tangent function requires:
θ = 1.678 x 10^-4 radians
Now, calculate the maximum distance:
d = 2 m / tan(1.678 x 10^-4) ≈ 11937.3 meters
Therefore, the maximum distance at which the eye can resolve two headlights at night, given a pupil diameter of 0.4 cm, is approximately 11,937.3 meters or 11.937 kilometers.

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Answer:

Hecht.

Explanation:

Look at this table. Accleration of gravity means gravitational constant.

The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N

The gravitaional force between two objects can be obtained by using the following formula:

F = GM₁M₂ / r²

Where

The following data were obtained from he question:

The gravitaional force can be obtained as shown below:

F = GM₁M₂ / r²

F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²

F = 1.63×10³ N

Thus, the gravitational force is 1.63×10³ N

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Answer:

I can't see it because it's too blury. try to search it

The average acceleration of  John is 3.6 m/s.

As we know the acceleration of an object is the rate of change of its velocity concerning the time, it is a vector quantity which means it both has direction and magnitude, the orientation of the object depends on the orientation of the total force acting on the object.

As we  are given that the initial velocity, u= 0 ms/s( as it started with rest) and the time taken, t=  10 seconds,  the final velocity , v= 36 m/s.

As the formula, we can prefer the calculation of the acceleration  of an object, which is one of the equations of the motion

v = u+at

Here a=  v-u/t

       = 36-0/10

       = 3.6 m/s

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The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core

Nuclear fusion of hydrogen to form helium happens evidently in the solar and different stars. It takes area best at extremely high temperatures. Scientists are attempting to find methods to create controlled nuclear fusion reactions on earth.

Researchers at Lawrence Livermore countrywide Laboratory's country-wide Ignition Facility in California have spent over a decade perfecting their method and the feature now showed that the landmark test conducted on eight August 2021 did, in fact, produce the primary-ever successful ignition of a nuclear fusion reaction.

People had been capable of cause fusion, but in methods that might be uncontrolled, like in thermonuclear guns sometimes called hydrogen bombs. Fusion has additionally been proven in laboratories, but below conditions that eat a long way, extra strength than the reaction produces.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question we have

\(volume = \frac{150}{2} = 75 \\ \)

We have the final answer as

Hope this helps you

Viscosity of the fluid affects the settling velocity of the droplets travelling in a desalter.: As the viscosity of a fluid increases, so does the settling velocity of the droplets.

In a desalter, settling is the most common mechanism used to remove water droplets from the oil. The settling velocity of droplets in the desalter is affected by the viscosity of the fluid. Here are some ways how viscosity of the fluid affects the settling velocity of the droplets travelling in a desalter:

1. In general, as the viscosity of a fluid increases, so does the settling velocity of the droplets. This is because as the fluid becomes more viscous, the drag forces on the droplets decrease and they fall faster. The droplets settle more quickly in a viscous fluid.

2. The settling velocity of a droplet also depends on its size. Larger droplets fall faster than smaller droplets. Therefore, the size of the droplets in the desalter is an important factor to consider in determining their settling velocity.

3. Additionally, the density of the fluid also plays a role in the settling velocity of droplets. Denser fluids typically have higher settling velocities than less dense fluids.

In conclusion, the viscosity of the fluid in a desalter affects the settling velocity of droplets in many ways.

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Answer:

Fnet = 200 -150

=50N

towards left

Answer:

\(a = 7.69\: {m(s)}^{ - 2} \)

Explanation:

\(f = ma \\ a = \frac{f}{m} = \frac{500}{65} = \frac{100}{13} \\ a = 7.6923076923 \: {m(s)}^{ - 2} \)

Answer:

Explanation:

The kinetic energy of an object is given by the formula:

KE = 1/2 * m * v^2

where m is the mass of the object and v is its velocity.

Plugging in the given values, we get:

KE = 1/2 * 0.015 kg * (240 m/s)^2

= 1/2 * 0.015 kg * 57600 m^2/s^2

= 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Answer:

The kinetic energy (KE) of an object is given by the formula:

KE = (1/2) * m * v^2

where m is the mass of the object and v is its velocity.

Substituting the given values, we get:

KE = (1/2) * 0.015 kg * (240 m/s)^2

Simplifying, we have:

KE = 0.5 * 0.015 kg * 57600 m^2/s^2

KE = 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Explanation:

Answer:

250 / 2.5*10^2

Explanation:

Answer: I would say that the answer to your question is "Nature"

Explanation: Everything that you've listed is related to nature.

When solid ice cream melts it turns into liquid form.

            Ice cream initially is in solid form and when it melts it turns into liquid form. Melting of ice cream is reversible, when the temperature around the ice cream is more than the temperature needed to keep it in solid form, it turns into liquid and can be reversed back into solid form by keeping it back into the lower temperature.

           Also, the sugar lower its freezing point and ice cream has more air than its actual volume which allows it to melt faster at higher temperatures.

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