Which factor distinguished uranus from all other planets?.

Answer:

The Average kinetic Energy of all the atoms and molecules of substance

Explanation:

When two objects of different masses are subjected to a force of the same strength, the one with less mass will experience a higher change in velocity.

Each object pulls the other when two objects come into contact. Imagine using a bat to strike a softball. The ball is pushed away by the bat when it collides with it. The bat experiences force from the ball as well.

Even if two colliding objects have masses that are very different from one another, they will nevertheless exert equal forces on one another. An object always experiences an impetus and a shift in momentum during a collision. The impulse that an object encounters during a collision is equal to its variation in speed.

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Answer: 24.39 N

Explanation:

Given

Torque required to open the lid is \(\tau =2\ N.m\)

diameter of lid \(d=8.2\ cm\)

Force exerted by fingers and thumb forms a couple. So, torque can be written as

\(\Rightarrow \tau= F\times 2r\\\Rightarrow 2=F\times 8.2\times 10^{-2}\\\\\Rightarrow F=\dfrac{200}{8.2}\\\\\Rightarrow F=24.39\ N\)

Thus, the magnitue of each force is 24.39 N

The substante that is insoluble and floats is the wood chip and the one that is insoluble is a sugar cube.

Solubility is a property that a substance has to dissolve in another that is called a solvent, this can also depend on the conditions of the temperature to which the solution can be exposed and also the pressure. The solubility will depend on the properties of each of the components, it is not always the same in all types of solutions.

When no more of the solute can dissolve in a solution, the solution is said to be saturated.

Therefore, we can confirm that the substante that is insoluble and floats is the wood chip and the one that is insoluble is a sugar cube.

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Answer:

When objects fall to the ground, gravity causes them to accelerate.

Alien astronomers deduce planets through careful observations of the Sun's motion, detecting periodic variations and deviations indicating the presence of gravitational influences by planets.

Alien astronomers could deduce the existence of planets in our solar system by observing the Sun's motion through careful and long-term observations. Here's how:

1. **Periodic Variations:** Alien astronomers would notice periodic variations in the Sun's position or apparent motion relative to the background stars. These variations would indicate the presence of celestial bodies exerting gravitational influences on the Sun.

2. **Deviation from Predicted Path:** The Sun's motion would deviate from what is expected if only the gravitational interaction between the Sun and other celestial objects, such as nearby stars, were considered. The observed deviations would suggest the presence of massive bodies that are not visible directly.

3. **Recurring Patterns:** Over time, alien astronomers would detect recurring patterns in the Sun's motion. These patterns would repeat at regular intervals, indicating that certain celestial objects have consistent and predictable positions relative to the Sun.

4. **Complex Orbital Dynamics:** By analyzing the precise nature of the Sun's motion, including its speed, direction, and deviations, alien astronomers could deduce the existence of multiple planets. The complexity of the Sun's motion would suggest the gravitational interactions of various planetary bodies with the Sun.

5. **Correlations with Other Celestial Bodies:** Alien astronomers would also examine the motion of other celestial bodies, such as the Moon or nearby stars, and look for correlations or gravitational influences between these objects and the Sun. Such correlations would further support the presence of planets in our solar system.

By studying the Sun's motion over an extended period, alien astronomers would be able to deduce the existence of planets in our solar system, even without directly observing them. These deductions would be based on the gravitational effects and complex dynamics resulting from the interactions between the Sun and the planets orbiting around it.

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Answer:

x = v₀ cos θ   t ,   y = y₀ + v₀ sin θ t - ½ g t2

Explanation:

This is a projectile launch exercise, in this case we will write the equations for the x and y axes

Let's use trigonometry to find the components of the initial velocity

              sin θ = \(v_{oy}\) / v₀

              cos θ = v₀ₓ / v₀

              v_{y} = v_{oy} sin θ

              v₀ₓ = vo cos θ

now let's write the equations of motion

X axis

         x = v₀ₓ t

         x = v₀ cos θ   t

        vₓ = v₀ cos θ

Y axis

        y = y₀ + \(v_{oy}\) t - ½ g t2

        y = y₀ + v₀ sin θ t - ½ g t2

        v_{y} = v₀ - g t

       v_{y} = v₀  sin θ - gt

        \(v_{y}^{2}\) = v_{oy}^2 sin² θ - 2 g y

As we can see the fundamental change is that between the horizontal launch and the inclined launch, the velocity has components

Any line that starts with a # character is a comment in the /etc/ file.

The /etc/ directory is a standard directory on Unix-like operating systems that contains configuration files for the system and applications. The # b at the beginning of a line indicates that the line is not a configuration setting but a comment meant for human readers to understand the purpose or context of the settings that follow it.

Comments in configuration files are important for several reasons. They can provide information about the purpose of a configuration setting, document the changes made to a file, or explain the reasoning behind a particular configuration choice. Additionally, comments can be used to temporarily disable a setting without having to delete it from the file.

In summary, lines that start with a # character in the /etc/ file are comments and are not processed as configuration settings by the system.

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In Unix and Linux systems, any line that starts with a # character is considered as a comment i.e., it's for annotation and not executed, particularly in the /etc/ file.

In Unix and Linux systems, any line that starts with a # character is a comment in the /etc/ file. This simply means that the system will not execute this line as it is meant for user annotation or explanation. For instance, you might see a line like '# This line explains the following command' which is meant to give clarity to anyone reading the file but would not have any impact on the system operations.

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Answer: solute: sugar, coffee powder, salt, cocoa powder, liquid detergent, monosodium glutamate (vetsin).

solvent: cow's milk, water, fruit extract

Explanation:

A solution is a mixture that is made up of two or more substances including solute and solvent.

The solute is one which can be dissolved in a liquid part that is solvent. The solute can be liquid or solid. Solutes are sugar, salt, coffee powder, cocoa powder, liquid detergent, monosodium glutamate.

The solvent is one which dissolves in it solute particles or molecules. Solvent are cow's milk, water, and fruit extract.

xscl determines the width of each interval on the x-axis, xmin and xmax set the range of data to be included, and ymax determines the maximum height of the bars on the y-axis. Adjusting these parameters allows you to customize the appearance and representation of the data in the histogram on the TI-83/84 calculator.

a. The significance of xscl (x-scale) in constructing a histogram on the TI-83/84 calculator is that it determines the width of each interval or bin on the x-axis. It specifies the numerical difference between consecutive values on the x-axis. By adjusting xscl, you can control the level of detail and the width of the bars in the histogram.

b. The values of xmin (minimum x-value) and xmax (maximum x-value) determine the range of data to be included in the histogram. They specify the boundaries of the x-axis and define the interval within which the data will be grouped. It's important to choose xmin and xmax to encompass the entire range of the data while avoiding unnecessary empty space on the graph.

c. The significance of ymax (y-axis maximum) in constructing a histogram on the TI-83/84 calculator is that it determines the maximum value on the y-axis. It sets the upper limit for the height of the bars in the histogram. Choosing an appropriate ymax ensures that all the bars are visible within the graphing window and prevents any bars from being cut off due to insufficient vertical space.

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Despite being massless, photons do have momentum, and it is directly related to their wavelength. This relationship is described by the equation p = λ, where p is the momentum of the photon, λ is its wavelength, and h is Planck's constant. This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

The fact that photons have momentum has been demonstrated through various experiments, such as the Compton scattering experiment, which showed that photons can transfer momentum to electrons. The momentum of photons is also important in understanding phenomena such as the Doppler effect, where the wavelength of light is affected by the motion of the source or observer.

It is important to note that while photons have momentum, they do not have mass, which sets them apart from other particles such as electrons. This means that the momentum of a photon cannot be calculated using the classical formula p = mv, where m is the mass of the particle and v is its velocity. Instead, the momentum of a photon is entirely determined by its wavelength.

In summary, while photons are massless, they do have momentum, which is related to their wavelength through the equation p = λ. This relationship has been demonstrated through various experiments and is an important aspect of understanding the behavior of light.

Therefore, This relationship was first proposed by Einstein in his theory of the photoelectric effect. The correct answer is (d).

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Answer:

130m/s^2 and 1.22s

Explanation:

From V = u+at

Where V, u, a, and t are the final velocity, initial velocity, acceleration and time respectively.

v = 6.75m/s

u = 3.5m/s

t = 0.250secs

a = ?

V = u+at

6.75= 3.5+a(0.250)

6.75-3.5 = 0.250a

3.25=0.250a

Divide both sides by 0.250

3.25/0.250= 0.250a/0.250

a = 130m/s^2

The acceleration of the will be 130 meter per second

Question 2

Speed = distance/time

Given that speed= 4.25m/s

Distance = 5.2m and time = ?

4.25m/s = 5.2m/t

Cross multiply

4.25×t = 5.2

Make t the subject by dividing both sides by 4.25

4.25t/4.25 = 5.2/4.25

t = 1.22s

Hence the time taken will be 1.22 seconds

Answer:

Archimedes Principle states that "any body completely or partially submerged in water is acted upon by an upthrust force which is equal to the magnitude of Weight of the body."

Answer:

We know that due to upthrust ,objects tend to lose weight when immersed in liquid.

This law is applicable for the gaseous medium too.The weight of the displaced liquid =pgv where p is density of liquid ,g is acceleration due to gravity and v is volume of displaced liquid.

Hope this helps...

Good luck on your assignment..

Given the total energy in the wire, current and time elapsed, the potential difference is 50 Volts.

The electric power is expressed as P = VI.

Where V is the potential difference, I is the electric current and P is the electric power.

Also, the consumption of energy per unit of time is called power. It is expressed as P = E / t

Given that;

First, we determine the power.

P = E / t

P = 500J / 5s

Power = 100W

Next, we determine the potential difference.

P = V × I

V = P / I

V = 100W / 2.00A

V = 50V

Given the total energy in the wire, current and time elapsed, the potential difference is 50 Volts.

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The Potential difference is 50 Volts.

The potential difference is a measure of the energy given to the charge carriers in a circuit

We know that  the electric power is expressed as P = VI.

V is the potential difference

I is the electric current
P is the electric power.

Also we know that power is expressed as P = E / t

Given

Current( I) = 2.00A ,time t = 5s

Total energy E = 500J

To find the power

P = E / t  = 500J / 5s = 100W

Now , To find the potential difference.

P = V × I (By rearranging it)

V = P / I

V = 100W / 2.00A = 50 V

Therefore , the total energy in the wire, current and time elapsed, the potential difference is 50 V.

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Answer:

d= 1.5 g/cm3

Explanation:

datos

m= 30g

v= 20cm3

d=?

formula

d= m / v

solución

d= 30g / 20cm3 = 1.5g/cm3

White lights can sometimes be found on red buoys.

Hence, Option C is correct answer.

Thus from the above conclusion we can say that White lights can sometimes be found on red buoys.

Hence, Option C is correct answer.

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Answer:

Approximately \(0.29\; {\rm m \cdot s^{-1}}\).

Explanation:

Make use of the fact that total momentum is conserved in collisions.

The momentum of an object of mass \(m\) and velocity \(v\) is \(p = m\, v\).

The momentum of the two trolleys before the collision would be:

Thus, the total momentum of the two trolleys right before the collision would be \(2\; {\rm kg \cdot m \cdot s^{-1}}\).

Since the two trolleys are stuck to one another after the collision, they could modelled as one big trolley of mass \(m = 3\; {\rm kg} + 4\; {\rm kg} = 7\; {\rm kg}\).

The momentum of the two trolleys, combined, is conserved during the collision. Thus, the total momentum of the new trolley of mass \(m = 7\; {\rm kg}\) would continue to be \(v = 2\; {\rm kg \cdot m \cdot s^{-1}}\) shortly after the collision.

Rearrange the equation \(p = m\, v\) to find the velocity of the two trolleys combined:

\(\begin{aligned}v &= \frac{p}{m} \\ &= \frac{2\; {\rm kg \cdot m \cdot s^{-1}}}{7\; {\rm kg}} \\ &\approx 0.29\; {\rm m \cdot s^{-1}}\end{aligned}\).

The true statements are, the silver coin lost electrons and the wool cloth lost protons.

A positive charge is an ion with excess proton. In this process the atom deficient number of electron as compared to protons.

When a silver coin is rubbed vigorously against a wool cloth, the silver coin which is a metal will loss electron, having excess number of protons and becomes positively charged in the process.

Thus, the true statements are;

the silver coin lost electrons and the wool cloth lost protons.

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Answer:

The total frictional force equals 60 N

Explanation:

We know that F - f = ma where F is the applied force, f is the frictional force, m the mass of the object and a its acceleration.

Now, since the cart moves with constant velocity, its acceleration is zero. So, a = 0.

So F - f = ma

F - f = m(0) = 0

F - f = 0

So, F = f

From the above, we see that the frictional force equals the applied force which is equal to 60 N.

So, f the total frictional force equals 60 N

Answer:

wave

Explanation:

A wave is defined as the disturbance that causes the movement of energy. The energy is transferred as the waves move from one place to another. A medium is required for the transfer of energy. Usually a wave travels through air or water. The process is carried on at a specific speed that is termed as the speed of propagation.

We have that the see-saw will be balance if a weight of \(x=15kg\) is added to Nural's side of the see-saw

\(x=15kg\)

From the Question we are told that

Wan’s mass is \(M_w=45 kg\)

Nurul’s mass is \(M_n= 30 kg.\)

Generally

The Will be balance when the weight on both sides of the see-saw are equal

\(M_w=M_n+x\)

\(45=30+x\)

\(x=45-30\)

\(x=15kg\)

In conclusion

The see-saw will be balance if a weight of \(x=15kg\) is added to Nural's side of the see-saw

\(x=15kg\)

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At each end of a long bone is an expanded portion called an "epiphysis," which articulates (or forms a joint) with another bone.

An epiphysis is a rounded or flat surface located at the ends of a long bone and is covered by a layer of smooth articular cartilage. This cartilage provides a low-friction surface that allows for smooth and pain-free movement between the bones at the joint. The epiphysis is separated from the main shaft of the bone (the diaphysis) by the epiphyseal plate, a layer of hyaline cartilage that allows for growth in children and adolescents. The epiphysis and diaphysis are joined together by a strong and flexible tissue called the epiphyseal line, which eventually fuses in adulthood and forms a solid connection between the two parts of the bone. The epiphysis and diaphysis work together to provide strength, stability, and support to the bones of the skeleton, and the joints formed by the articulation of the epiphysis and another bone play a crucial role in enabling movements such as walking, jumping, and twisting.

In short, an epiphysis is an expanded portion at the end of a long bone that articulates with another bone to form a joint, and it plays an important role in the movement and stability of the skeleton.

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Answer:

105 seconds

Explanation:

Given,

Speed ( s ) = 7 m/s

Time ( t ) = 15 seconds

To find : Distance ( d ) = ?

Formula : -

d = s x t

d = 7 x 15 = 105 seconds

Answer:

Explanation:

\(\sf \boldsymbol{ \sf Formula } : \\\\ \LARGE\boxed{\boxed{\rm S=V\cdot t }}\)

Where :

The strong man accelerates the boulder of mass 264 kg at 4.1 m / s² if he uses a force of 2452 N.

W = m g

W = Weight

m = Mass

g = Acceleration due to gravity

m = 264 kg

g = 9.8 m / s²

W = 264 * 9.8

W = 2587.2 N

F = 2452 N

W = Normal force, N = 2587.2 N

\(f_{k}\) = μ N

\(f_{k}\) = Kinetic frictional force

μ = Co-efficient of kinetic friction = 0.53

\(f_{k}\) = 0.53 * 2587.2

\(f_{k}\) = 1371.22 N

∑ \(F_{x}\) = m a

F - \(f_{k}\) = m a

2452 - 1371.22 = 264 * a

a = 1080.78 / 264

a = 4.1 m / s²

Therefore, the strong man accelerates the boulder at 4.1 m / s²

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Answer:

The correct answer is 1.3Hz

Answer:

15 m/s

Explanation:

0.3 + 0.2 = 0.5

0.5 * 10 = 5

5 + 10 = 15

The magnetic flux through the loop when it is perpendicular to the solenoid is 0.012 Wb.

The magnetic flux through a loop is given by the formula Φ = BAcos(θ), where B is the magnetic field, A is the area of the loop, and θ is the angle between the magnetic field and the normal to the loop. In this case, the loop is perpendicular to the solenoid, so θ = 0 degrees. The area of the loop can be calculated as the area of a circle with diameter 6.0 cm, which is \(A = \pi \times (d/2)^2\), where d is the diameter.

Therefore,

\(A =\pi \times (6.0 cm / 2)^2 = 9\pi cm^2\)

The magnetic field inside the solenoid is given as 0.20 T. Plugging these values into the formula, we have

Φ = (0.20 T)(9π)cos(0°)

Since cos(0°) = 1, the equation simplifies to

Φ = (0.20 T)(9π) = 1.8π T.

Evaluating this expression numerically gives Φ ≈ 5.65 T·cm^2, which, rounded to two significant figures, is 0.012 Wb.

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Given that the car speeds up at a steady 1.3 m/s2, and the magnitude of the centripetal acceleration is equal to the tangential acceleration. We can use the following equations in order to determine the time required to attain the magnitude of centripetal acceleration equal to tangential acceleration.  

The centripetal acceleration of an object moving in a circle is given by the formula;\(a_c = v^2/r\) Where v is the speed of the object and r is the radius of the circle.

Therefore, t = 5.7/1.3

= 4.385 seconds. So, the time after which the magnitude of the centripetal acceleration is equal to the tangential acceleration is 4.385 seconds (rounded to 2 decimal places).

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The intensity of the sonic boom depends on a variety of factors, including the size and speed of the object creating it, as well as the distance between the object and the observer.

A shock wave is a type of propagating disturbance that moves through a medium at supersonic speeds. It is created when an object, such as an airplane or a bullet, moves faster than the speed of sound in that medium. As the object moves, it creates a pressure wave that moves ahead of it, compressing the air in front of it and creating a region of high pressure. When the object passes by, the compressed air rapidly expands outward, creating a region of low pressure. This rapid change in pressure creates a sharp, "shock" wave that moves through the air at supersonic speeds.

A sonic boom is a specific type of shock wave that is created when an object travels through the air faster than the speed of sound. When an airplane moves faster than the speed of sound, it creates a pressure wave that moves ahead of it, compressing the air in front of it and creating a region of high pressure. As the airplane continues to move, this pressure wave moves outward in all directions, eventually reaching the ground. When it does, the pressure wave creates a sudden, loud noise that is heard as a sonic boom.

The sonic boom is created by the sudden change in pressure as the shock wave passes by. Because the shock wave moves at supersonic speeds, the pressure changes occur very rapidly, creating a sharp and distinct sound. The intensity of the sonic boom depends on a variety of factors, including the size and speed of the object creating it, as well as the distance between the object and the observer.

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Answer: Matter is anything that takes up space and has weight. A solid keeps it shape, a liquid takes the shape of its container and a gas fills its container.