As the planets orbit the sun, they are never far from the ____ on the celestial sphere

Answer:

DistaNcE chanGes iN relAtiOn tO TiMe Bc ThE fuRthEr yOu Go ThE mOrE TiMe goeS bY

Answer:

The correct answer is "6.015×10⁴ J/K".

Explanation:

The given values are:

Mass of water,

= 10 kg

Latent heat of boiling,

= 2257 kJ

Constant temperature,

= 100°C

The entropy change will be:

= \(\frac{mass\times latent \ heat \ of \ boiling}{temperature}\)

On substituting the values, we get

= \(\frac{10\times 2257\times 1000}{(273+100)K}\)

= \(\frac{22,570,000}{373K}\)

= \(6.051\times 10^4 \ J/K\)

Answer:

Just now because this video is not working properly what I have to download free fire and pinni today aakash will be able and pinni today aakash and pinni today and I am not sure if you know that I will show

A white dwarf is an extremely dense object, with the mass of the sun compressed into the size of the moon. This means that the gravitational force on the surface of the white dwarf is much greater than the gravitational force on the surface of the sun or the moon.

The weight of an object is equal to its mass multiplied by the gravitational force at the surface of the celestial body. The formula for weight is W = mg, where W is weight, m is mass, and g is the gravitational force at the surface of the celestial body.

To find the weight of a 65 kg person on the white dwarf, we need to know the gravitational force at the surface of the white dwarf. The gravitational force at the surface of a celestial body is given by the formula g = GM/R^2, where G is the gravitational constant, M is the mass of the celestial body, and R is the radius of the celestial body.

For a white dwarf with the mass of the sun (M = 1.989 x 10^30 kg) and the size of the moon (R = 1.737 x 10^6 m), the gravitational force at the surface is:

g = (6.674 x 10^-11 N m^2/kg^2)(1.989 x 10^30 kg)/(1.737 x 10^6 m)^2 = 1.67 x 10^12 N/kg

The weight of a 65 kg person on the white dwarf is:

W = (65 kg)(1.67 x 10^12 N/kg) = 1.09 x 10^14 N

So, a 65 kg person would weigh 1.09 x 10^14 N on the white dwarf. This is equivalent to about 1.09 x 10^11 kg or 109 billion kg. This is an extremely large weight, and it would be impossible for a human to survive on the surface of a white dwarf.

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Answer:

its density decrease

Explanation:

Explanation: As the molecules of a liquid are cooled they slow down. As the molecules slow down they take up less volume. Taking up less room because of the molecules lower energy causes the liquid to contract.

Answer:

A & F

Explanation:

As the liquid cools down, it means the temperature decreases the density of the liquid increases in most o the cases.

Now the volume is inversely proportional to the density of substance so density increases.

Answer:

m=6.25kg

Explanation:

Force= mass × acceleration

50=m×8

make m subject of the formula...

m=50/8

m=6.25kg

Answer:

\(\boxed {\boxed {\sf 6.25 \ kilograms}}\)

Explanation:

According to Newton's Second Law of Motion, force is the product of mass and acceleration.

\(F= m \times a\)

We know the force is 50 Newtons and the acceleration is 8 meters per second squared. Let's convert the units to make the problem and unit cancellation easier.

1 Newton is equal to 1 kilogram meter per square second (1 kg*m/s²), so the force of 50 N is equal to 50 kg*m/s².

Now we know 2 values:

Substitute the values into the formula.

\(50 \ kg *m/s^2= m \times 8 \ m/s^2\)

Since we are solving for the mass, we must isolate the variable, m. It is being multiplied by 8 meters per square second and the inverse of multiplication is division. Divide both sides by 8 m/s².

\(\frac {50 \ kg *m/s^2}{8 \ m/s^2}= \frac{m \times 8 \ m/s^2}{8 \ m/s^2}\)

\(\frac {50 \ kg *m/s^2}{8 \ m/s^2}= m\)

The units of meters per square second (m/s²) cancel.

\(\frac {50 \ kg }{8 }=m\)

\(6.25 \ kg =m\)

The mass is 6.25 kilograms.

Answer:

the thermal energy absorbed is 46,893 J

Explanation:

Given;

mass of the water, m = 145 g = 0.145 kg

initial temperature of the water,  t₁ = 23 ⁰C

final temperature of the water, t₂ = 100 ⁰C

specific heat capacity of water, c = 4,200 J/kg.⁰C

The thermal energy absorbed is calculated as;

H = mcΔt

H = 0.145 x 4,200 x (100 - 23)

H = 46,893J

Therefore, the thermal energy absorbed is 46,893J

Answer:

drop of food coloring in a glass of watercolors the water through diffusion. ... At night, however, the stomata simply remain open and CO2 enters the plant through diffusion. Flower Feathers

Explanation:

When two bodies contact each other without slipping and the points in contact move along different paths, the tangential components of acceleration will be different. This means that the bodies will have different accelerations along the tangential direction.

Tangential acceleration refers to the component of an object's acceleration that is parallel to the object's velocity vector. As an object moves, its velocity vector changes in direction, and thus the direction of its acceleration vector also changes.

The tangential acceleration is the part of this vector that is parallel to the velocity vector. It is also referred to as the longitudinal acceleration.

When two bodies make non-slip contact and the points of contact travel along distinct routes, the tangential components of acceleration diverge. This indicates that the bodies' accelerations will differ along the tangential direction.

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The best physical property to focus on for the first step in separating the mixture would be magnetism, therefore the correct answer would be option C.

An area where the magnetic force is being applied might be described as a magnetic field. This area could be found around a magnet, magnetic substance, or electric charge.

The magnet's N-pole and S-pole have the strongest magnetic fields for a basic bar magnet. A magnet's north pole serves as the source of the magnetic field, which ends at the south pole.

As given in the problem Katie's teacher has given her a sample that contains a mixture of salt, sand, and iron fillings. She is instructed to separate the mixture into three individual components.

The first step in separating the mixture would be to separate iron fillings with the help of the property of magnetism as iron fillings are the magnetic material. therefore the correct answer would be option C.

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The time required for a sample of radioactive tritium to lose 76.0% of its activity is 24.6 years.

To calculate the time required for a sample of radioactive tritium to lose 76.0% of its activity, we can use the half-life formula. Tritium has a half-life of 12.3 years, which means that in 12.3 years, half of the initial amount of tritium will decay.

So, if we want to find out how long it takes for 76.0% of the tritium to decay, we can use the following formula:

time = (ln 2/ln(1/2)) x half-life x (ln(initial activity/final activity)).

Plugging in the values, we get time = (ln 2/ln(1/2)) x 12.3 x (ln(1/final activity)).

Since we want 76.0% of the activity to decay, we can set final activity = 0.24 (1-0.76), which gives us a time of approximately 24.6 years.

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Answer:

Because it has more texture and is solid. Its like glass

Explanation:

Answer:

Why is ice more reflective (has higher albedo) than liquid water? They're both the same substance (water). Is something quantum mechanical involved?

Explanation:

In fact ice is slightly less reflective than water. The reflectivity is related to the refractive index (in a rather complicated way) and the refractive index of ice is 1.31 while the refractive index of water is 1.33. The slightly lower refractive index of ice will cause a slightly lower reflectivity. In both cases the reflectivity is about 0.05 i.e. at an air/water or air/ice surface about 5% of the light is reflected.

Answer:

The enthalpy change of the water during the process is 1.4 kJ/kg

Explanation:

The enthalpy change of the water during the process can be determined from

\(\Delta H = \frac{\Delta P}{\rho} + C_{p} \Delta T\)

Where

\(\Delta H\) is the enthalpy change

\(\Delta P\) is the change in pressure

\(\rho\) is the density

\(C_{p}\) is the specific heat

and \(\Delta T\) is the temperature change

From the question

\(\Delta P\) = 900 kPa - 100 k Pa

\(\Delta P\) = 800 kPa

\(\rho\) = 1 kg/L = 1kg/dm³ = 1000 kg/m³

\(C_{p}\) = 4.18 kJ/kg.°C

\(\Delta T\) = 0.15 °C

∴\(\Delta H = \frac{\Delta P}{\rho} + C_{p} \Delta T\)

\(\Delta H = \frac{800}{1000} +4.18 \times 0.15\)

\(\Delta H = 0.8 + 0.627\\\)

\(\Delta H = 1.4 kJ /kg\)

Hence, the enthalpy change of the water during the process is 1.4 kJ/kg

Answer:

1. B- kinetic to gravitational potential energy

2. A-gravitational to kinetic energy

Explanation:

When the train goes up the hill, the kinetic energy decreases (the speed decreased) due to the pull of gravity.

When the train goes down the hill, the speed increases (kinetic energy increases) and since the object is coming downwards the gravitational potential energy decreases

As the train went up the hill, Kinetic energy was converted into Gravitational potential energy, and As the train went down the hill, Gravitational potential energy was converted back into Kinetic energy. The correct option for both is B.

The conversion of energy refers to the process of changing energy from one form to another. Energy can be converted from one form to another, but it cannot be created or destroyed. This is known as the law of conservation of energy. Therefore, the total amount of energy in a closed system remains constant, even though it can be converted from one form to another.

Energy can be converted between different forms, such as mechanical, thermal, electrical, chemical, and nuclear energy. For example, when a car moves, the energy from the fuel is converted into mechanical energy to make the car move. When a light bulb is turned on, electrical energy is converted into light and heat energy. When food is digested, chemical energy is converted into mechanical and thermal energy.

The efficiency of energy conversion is an important factor in many processes, and the goal is often to maximize the amount of useful energy that can be obtained from a given amount of energy input. Energy conversion is an important concept in physics, engineering, and many other fields, as it helps us understand and analyze various physical processes and phenomena.

Here in the Question,

As the train went up the hill, Kinetic energy was converted into Gravitational potential energy. Because As the train goes up the hill, it gains height, and its potential energy increases. At the same time, its speed decreases due to the work done by gravity against the train's motion, causing a decrease in kinetic energy. Therefore, the kinetic energy of the train is converted into gravitational potential energy.

As the train went down the hill, Gravitational potential energy was converted back into Kinetic energy. Because As the train goes down the hill, its height decreases, and its potential energy decreases. At the same time, its speed increases due to the work done by gravity in the direction of the train's motion, causing an increase in kinetic energy. Therefore, the potential energy of the train is converted back into kinetic energy.

Therefore the correct answer to both questions is option B.

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Answer:

Explanation:

The strength of the force of friction depends on two factors: how hard the surfaces push together and the types of surfaces involved. What factors affect the gravitational force between two objects? Two factors affect the gravitational attraction between objects: mass and distance.

Answer:

We can solve this problem by using the concept of relative motion. Let's assume that the first boy is running in the clockwise direction and the second boy is chasing him in the counterclockwise direction.

Since the second boy always remains on the radius connecting the center of the circle and the first boy, the distance between them is always equal to the radius of the circle, which is 28 m.

Let's denote the distance covered by the first boy as S1 and the distance covered by the second boy as S2. We know that the first boy is running with a constant speed of 4 m/s, so we can write:

S1 = u*t1

where t1 is the time taken by the first boy to complete the chase.

The second boy is moving with a constant velocity of 4 m/s towards the first boy, so we can write:

S2 = V*t2

where t2 is the time taken by the second boy to catch up with the first boy.

Since the second boy is always moving on the radius connecting the center of the circle and the first boy, the distance covered by him is equal to the distance on the circumference of the circle covered by the first boy, minus the distance covered by the first boy along the radius. We can write:

S2 = S1 - 2*pi*R

where pi is the mathematical constant pi (approximately equal to 3.14).

Substituting the values of S1 and S2, we get:

u*t1 = V*t2 + 2*pi*R

Since the time of chase is (10 + x) sec, we can also write:

t1 + t2 = 10 + x

We have two equations and two unknowns (t1 and t2), so we can solve for them. First, we can solve for t2:

t2 = (u*t1 - 2*pi*R) / V

Substituting this in the second equation, we get:

t1 + (u*t1 - 2*pi*R) / V = 10 + x

Simplifying this equation, we get:

t1*(1 + u/V) = 10 + x + 2*pi*R/V

Finally, we can solve for t1:

t1 = (10 + x + 2*pi*R/V) / (1 + u/V)

Substituting the given values of R, u, and V, we get:

t1 = (10 + x + 56*pi) / 20

Simplifying this expression, we get:

t1 = 2.8*pi + 0.5*x + 2.8

Therefore, the time taken by the first boy to complete the chase is 2.8*pi + 0.5*x + 2.8 seconds.

Explanation:

this gives me nightmare

The persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

Tο determine the speed at which the persοn is mοving, we can use the cοncept οf relative velοcity.

Let's cοnsider the hοrizοntal and vertical cοmpοnents separately:

Hοrizοntal Cοmpοnent:

The persοn is walking due East, which is perpendicular tο the Nοrth directiοn οf the car. Therefοre, the hοrizοntal cοmpοnent οf the persοn's velοcity dοes nοt affect the speed at which the persοn is mοving away frοm the car.

Vertical Cοmpοnent:

The persοn is 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur. This indicates that the persοn's vertical pοsitiοn is changing with time. Since the persοn is mοving in the Sοuth directiοn and the distance is increasing, the persοn's speed can be determined by the rate οf change οf the vertical distance.

Given that the distance is increasing at a rate οf 55 miles per hοur, the persοn's speed in the Sοuth directiοn is 55 miles per hοur.

Therefοre, the persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

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The horizontal force exerted by air resistance on the bucket is 5,210 N.

The horizontal force exerted by air resistance on the bucket is the parallel force on the cable carrying the bucket.

The magnitude of this force is calculated as follows;

Fx = mg cosθ

where;

Fx = (590 x 9.8) x cos(25.7)

Fx = 5,210 N

Thus, the horizontal force on the bucket is determined from parallel force on the rope.

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Momentum is a product of the mass and velocity of particles in motion while impulse is the rate of change of the momentum of particles/objects when a force acts on the object.

The impulse of the collision in system A is twice the impulse of the collision in system B

Impulse is given as J = F.dt

In case of impulse 1,

it is F(1-0.5) = 4* 0.5 = 2 Ns

In case of impulse 2,

it is = 2(2.5 - 1.5) = 2Ns

We saw that, both the impulses are calculated to be 2Ns.

Therefore, both the impulses in the graph are same.

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Answer:

current must flow and chemical energy must take place

Answer:

Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

Answer:

A. Cilvil court.........

Civil court  would you go to if you wanted to declare bankruptcy. The correct option is A.

Thus, According to the United States Bankruptcy Code, bankruptcy proceedings are typically filed in a federal bankruptcy court.

The federal court system includes these courts, which deal with Chapter 7, Chapter 11, and Chapter 13 bankruptcy cases.

The additional alternatives (U.S. Court of Appeals, Supreme Court, and U.S. District Court) are not the main courts where bankruptcy cases are generally filed.

Thus, Civil court  would you go to if you wanted to declare bankruptcy. The correct option is A.

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Answer:

Kinetic energy is the energy obtained from movement while potential energy is the energy in something when it is at a height or has been manipulated in some way; it has work done to it.

Explanation:

Kinetic energy is, like I said, energy gained through movement or action. When an object stops moving, it converts into a different type of energy. Energy cannot be destroyed or created. An object with potential energy has a reference. A reference determines how high it is. The higher and heavier an object is, the more potential energy it has.

Hope this helps!

The magnitude of the acceleration due to gravity on this distant planet is approximately 9.8 m/s².

To determine the acceleration due to gravity on the distant planet, we can follow these steps:

1. Find the time period (T) of one oscillation:
Since the pendulum completes 100 oscillations in 360 seconds, the time period for one oscillation is:
T = 360 s / 100 oscillations = 3.6 s

2. Use the formula for the period of a simple pendulum:
T = 2π√(L/g)
where L is the length of the pendulum (1.20 m) and g is the acceleration due to gravity.

3. Solve for g:
Square both sides of the equation:
T² = 4π²(L/g)
Now, isolate g:
g = 4π²L/T²

4. Substitute the known values:
g = (4 * π² * 1.20 m) / (3.6 s)²
g ≈ 9.8 m/s²

The magnitude of the acceleration due to gravity on this distant planet is approximately 9.8 m/s².

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The number of oscillations of the toy in a second is 1.25.

The given parameter:

The frequency of an object is calculated as follows;

\(f = \frac{n}{t} \\\\\)

where;

The number of oscillations of the toy in a second is calculated as follows;

\(1.25 = \frac{n}{1} \\\\n = 1.25\)

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Electrical energy which is provided to the pump is transformed into gravitational potential energy and into sound in equal portions. Thus, the correct option is C.

The principle of conservation of energy establishes that the energy cannot be created nor it can be lost alone. Energy can only be transformed, based on the principle of conservation of energy, the mechanical energy of the system is established as formed by the kinetic energy and the different in potential energies.

In this case, the electrical energy of the system is transformed into kinetic energy to raise the water temperature, when it reaches a height level where its actual speed is zero, all the mechanical energy is transformed into gravitational potential energy.

Therefore, the correct option is C.

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Your question is incomplete, most probably the complete question is:

Ahmad uses an electric pump to raise water to a reservoir on his farm. The pump is very noisy, and Ahmad’s uncle, who is an engineer, told him that only 50\%50%50, percent of the energy it consumes is delivered as gravitational potential energy to the water. When Ahmad turns off the pump, he notices that when he touches it, it has not warmed up.

What happened to the electrical energy provided to the pump?

a. It mostly transformed into gravitational potential energy, and a small portion transformed into sound.

b. It mostly transformed into sound, and a small portion transformed into gravitational potential energy.

c. It transformed into gravitational potential energy and into sound in equal portions.

d. It mostly transformed into sound energy and gravitational potential energy, and a small portion disappeared.

Explanation:

Wave motion

ex...longitudinal wave.

Answer: v = 43.98 m/s

Explanation: 22 + 15.7x1.4 = 43.98.

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A plot of the binding of oxygen to myoglobin as a function of po2 gives a hyperbolic shape; a similar plot for hemoglobin gives a sigmoidal shape.


The binding of oxygen to myoglobin follows a hyperbolic relationship with po2. This means that as the po2 increases, the binding of oxygen to myoglobin increases until it reaches a plateau. On the other hand, the binding of oxygen to hemoglobin follows a sigmoidal relationship with po2. Initially, there is a slow binding of oxygen to hemoglobin, but as the po2 increases, there is a rapid increase in the binding until it reaches saturation.

This sigmoidal shape is due to the cooperative binding behavior of hemoglobin, where the binding of one oxygen molecule increases the affinity of hemoglobin for subsequent oxygen molecules.

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Answer:

d = 375 m

Explanation:

The speed of sound is constant in any medium, therefore we can use the uniform motion relationships

          v = x / t

          x = v t

In this case it indicates that the time since the sound is emitted and received is t = 0.50 s, in this time the sound traveled a round trip distance

           x = 2d

          2d = v t

          d = v t/2

let's calculate

          d = 1500 0.5 / 2

          d = 375 m