Find the net force and direction in the picture below.

Answer:

v= s/t

Explanation:

250 km/ h =69.44m/s

S1=2 times 69.44 ≈ 139m

Next 2.5 seconds:

S2 = 100m

Average speed:

v=139m+100m/2s+2.5s = 239/4.5s = 53.2 m/s=192km/h

4 hours time it take a person to walk 18 km north at a velocity of 4.5 km/h.

The velocity of a person or object affects its direction of motion. Velocity is a scalar in its most fundamental form. It is the speed at which distance is changing. The issue is the frequency of relocation changes.

4.5 km/hr is not a velocity, just to be clear. Because it's only a speed, we can't tell which way he's walking.

It takes him north if he's walking that direction.

(18 km) / (4.5 km/hr) = 4 hours (rounded) .

It takes him longer if he's walking in any other direction.

He can never travel northward no matter how far he walks if the angle between north and the direction he is walking in is 90 degrees or more.

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Cl has a higher ionization energy because it takes less energy to add an electron to a valence shell that is nearly full and is denoted as option A.

This is defined as the minimum amount of energy which is required to remove an electron from a gaseous atom or ion.

Chlorine is on the same period with magnesium but has smaller radius and has a greater nuclear charge thereby resulting in the less energy needed to complete the octet configuration.

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Answer:

Where do you find the atoms with the largest atomic radius on the periodic table?

(answer) the lower right

Which has a higher ionization energy: chlorine (Cl) or magnesium (Mg)? Why? Select the best answer.

(answer) Cl; it takes much more energy to pull an electron away from a valence shell that is nearly full.

Where do you find the atoms with the strongest metallic properties on the periodic table?

(answer) the lower left

How did Mendeleev come up with the first periodic table of the elements?

(answer) He arranged the elements by different properties to find a pattern.

How does the Coulomb force affect charge interactions?

(answer) Like charges repel, and opposite charges attract.

Explanation:

i just finished the quick check UwU

Given,

On simplifying,

Thus,

Or

Thus, x=9 and x=-15

Therefore the correct answer is the third option

Answer:

300 J (Joules)

A Joule will measure "the amount of work done when a force of one newton is exerted through a distance of one meter"

Hope this Helps

Answer:

4 smaller disks

Explanation:

We are given;

Mass of smaller and larger disks = M

Radius of smaller disk = R

Radius of larger disk = 4R

Formula for moment of inertia about cylinder axis is:

I = ½MR²

Thus;

For small disk, I_small = ½MR²

For large disk, I_large = ½M(2R)² = 2MR²

We are told that moment of inertia of System A consists of two of the larger disks. Thus;

I_A = 2 × I_large = 2 × 2MR²

I_A = 4MR²

We are also told that System B consists of one of the larger disks and a number of the smaller disks. Thus;

I_B = I_large + n(I_small)

Where n is the number of smaller disks.

I_B = 2MR² + n(½MR²)

I_B = MR²(2 + n/2)

We are told that the moment of inertia for system A equals the moment of inertia for system B. Thus;

I_A = I_B

So;

4MR² = MR²(2 + n/2)

MR² will cancel out to give;

4 = 2 + n/2

Multiply through by 2 to give;

8 = 4 + n

n = 8 - 4

n = 4

Answer:

340 kg/m³

Explanation:

\(Relative density \: = \frac{density \: ofsubstance}{density \: of \: equal \: volume \: ofwater} \)

density of water = 1000 kg/m³

density of the liquid = 0.34 × 1000

= 340 kg/m³

Answer:

25N

Explanation:

100 - 75 = 25

That should be right if im not dumb...

The resultant of the given forces will be "25 N".

Another element applies a force on one component. This same concept of a force isn't restricted to living as well as non-living entities.

All objects can exert a force towards or against another item, as well as all objects might well be impacted by pressures.

According to the question,

The pair of forces,

Upward = 100 N

Downward = 75 N

Now,

The resultant pair will be:

= \(100-75\)

= \(25\) N (Upward)

Thus the response above is the appropriate.

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The gas state of a substance that is normally a solid or a liquid at room temperature occurs when the substance undergoes a phase change from solid or liquid to gas.

This phase change is known as sublimation for solids and evaporation for liquids. The temperature and pressure conditions at which sublimation or evaporation occurs depend on the substance's properties, such as its intermolecular forces and molecular weight. For example, dry ice (solid carbon dioxide) sublimes at -78.5°C and atmospheric pressure, while water (a liquid at room temperature) evaporates at 100°C and atmospheric pressure. The gas state of normally solid or liquid substances has many practical applications, such as in refrigeration, gas storage, and chemical synthesis.

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If the westernmost Gandalf Island has rocks dated at 32 million years old the average rate of motion of these islands is Distance from the rift and age of seafloor sample, option  A.

A piece of land enclosed by water is called an island. Although they are completely encircled by water, continents are not regarded as islands because of their size. Australia, the smallest continent, is larger than Greenland, the biggest island, by more than three times. In the oceans, lakes, and rivers of the world, there are many islands. Their size, environment, and types of living things all differ widely.

Some islands, like the Aleutian Islands in the American state of Alaska, are always chilly and covered with ice. Some are located in warm, tropical seas, like Tahiti. Thousands of kilometres separate many islands, like Easter Island in the South Pacific, from the closest continent. Other islands, like the Greek Cyclades in the Aegean Sea, are clustered together in what are known as archipelagoes.

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Complete question:

If the westernmost Gandalf Island has rocks dated at 32 million years old, calculate the average rate of motion of these islands.

-Distance from the rift and age of seafloor sample

-Type of rock and distance from the rift

-Age of the continent and depth of the water

-Age of the seafloor sample and age of the continent

Given,

The temperature in Fahrenheit, F=57.39 °F

The temperature can be converted from degree Fahrenheit to degree celcius using the formula,

On substituting the known values,

Thus 57.39 °F in degree celcius is 14.11 °C

Answer:

1400g/L

Explanation:

Change 25ml into litres.

Use the formula d=m/v

Devide 35g by 0.025L

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Actually Welcome to the Concept of the Rays of light.

Since we know that, The light ray on a shiny surface makes a angle with the normal, hence The Angle of incidence is equal to angle of reflection made with Normal Axis in the middle.

Thus Option c.) is correct.

C.) is the Answer.

The angle of reflection given the incident ray from the given diagrams is option C.

When a light ray strikes the shining surfaces, the part of the light gets refracted. The bouncing back of the light is called reflection. When the light strikes the surface is called an incident ray.

When the light ray incident on the surface, the light returns back to the same medium is called reflection. The laws of reflection are, the angle of incidence is equal to the angle of reflection, and the incident ray, reflected ray, and normal takes place in the same plane. The speed of light remains the same in the process of reflection.

The reflected light ray changes the path of direction in the same medium. When a light ray enters from one medium to another, the speed of light gets decreases.

Thus, the ideal solution is option C.

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Answer: True

Explanation: Light enters your eye through the lens which then hits the retina which is located in the back of your eye.

Based on my calculations for the final and initial kinetic energies, this is an inelastic head-on collision. In an inelastic collision, some of the kinetic energy is lost as the objects collide and stick together.

A head-on collision means the two objects collided directly into each other. Based on the given terms, it seems that the collision you are referring to is an "inelastic head-on collision." In such a collision, the kinetic energies are not conserved, and some of the initial kinetic energy is transformed into other forms of energy, such as heat or deformation. This differs from an elastic collision, where the total kinetic energy is conserved, and a perfectly inelastic collision, where the objects stick together and move as one after the collision.If the final kinetic energy cannot be determined, then we cannot determine the type of collision.

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The width of the slit is 482 nm. The first minimum in a single slit diffraction pattern occurs at an angle given by the equation sinθ = λ/b,

where θ is the angle between the center of the diffraction pattern and the location of the minimum, λ is the wavelength of the light, and b is the width of the slit.

In this case, we are given that the first minimum occurs at 59° for 620 nm light.

Using the equation, we can solve for the width of the slit as b = λ/sinθ. Plugging in the values, we get b = (620 nm)/(sin(59°)) = 482 nm. Therefore, the width of the slit is 482 nm.

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The gravitational potential energy of the Earth-Sun system is -2.2 x 10^33 joules. The negative sign indicates that it is a bound system with the potential energy being negative.

The gravitational potential energy between two objects can be calculated using the formula U = -GM m/r, where U is the gravitational potential energy, G is the gravitational constant, M and m are the masses of the two objects, and r is the distance between their centers of mass.

For the Earth-Sun system, the mass of the Earth (M) is approximately 5.972 x 10^24 kg, the mass of the Sun (m) is approximately 1.989 x 10^30 kg, and the average distance between them (r) is approximately 1.496 x 10^11 meters.

Plugging these values into the formula, we get:

U = -(6.67430 x 10^-11 Nm^2/kg^2) * (5.972 x 10^24 kg) * (1.989 x 10^30 kg) / (1.496 x 10^11 meters) = -2.2 x 10^33 joules

The gravitational potential energy of the Earth-Sun system is -2.2 x 10^33 joules. The negative sign indicates that it is a bound system with the potential energy being negative.

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Answer:

0.04 m / s

Explanation:

distance over time will get you your speed

When an object travels in a circle, it experiences a centripetal force which is directed towards the center of the circle. This force is given by:

F = m * v^2 / r

where F is the centripetal force, m is the mass of the object, v is its speed, and r is the radius of the circular path.

In this case, the mass of the vehicle is 1500 kg, the speed is 22 m/s, and the radius of the circle is 85 m. Plugging these values into the equation above, we get:

F = 1500 kg * (22 m/s)^2 / 85 m = 906.35 N

So, the centripetal force acting on the vehicle is 906.35 N.

The direction of the centripetal force is towards the center of the circle, which provides the necessary force to keep the vehicle moving in a circular path.

In conclusion, when a 1500-kg vehicle travels at a constant speed of 22 m/s around a circular track that has a radius of 85 m, it experiences a centripetal force of 906.35 N, which is directed towards the center of the circular path. This force is necessary to maintain the circular motion of the vehicle and prevents it from moving in a straight line.

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Answer:

22400 Joules

Explanation:

Apply the formula:

KE = 1/2 . 40 . 1120

KE = 20 . 1120

KE = 22400 Joules

Answer: B. 0 J

Explanation:

Answer:

D. The skier's weight, the force of friction between the skis and snow,

and the force of air resistance

Explanation:

If two objects, such as the the skier, and skies undergo a fast velocity downward, the net force is the total force or newtons which are all components of weight as apparent to mass and gravity, friction, which is the contact force of the skis on the snow, and air resistance which limits the air resistance is the opposite force acting on the object I'm the air relative to the density of air, cross sectional area of the object, the coefficient of drag which is based on the density of the object, it's area, and dynamic air pressure.

Answer:

When insulating materials rub against each other, they may become electrically charged . The material that gains electrons becomes negatively charged The material that loses electrons is left with a positive charge

Explanation:

The statement that is true about the situation where the sailboat ends up 7 miles to the west is that it describes displacement, which is a vector quantity (option A).

Displacement is the vector quantity which denotes distance with a directional component. This means that displacement is distance with direction.

On the other hand, distance is the amount of space between two points, usually geographical points, usually (but not necessarily) measured along a straight line. It is a scalar quantity, meaning that it has no direction.

This serves as the major difference between both terms: Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

According to this question, a sailboat ends up 7 miles to the west of a pier. This means that the magnitude is 7 while the direction is west of the pier, hence, it depicts displacement.

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What would happen as time goes on is that the object would continue moving along a straight line.

The statement of the Newton's law would draw our minds to the law of inertia. This implies that an object that is at rest would continue to be at rest unless it is acted upon by an unbalanced force.

We also know that if an object is in motion, the object would continue to be in motion unless the object is acted upon by an external force. With this said, we are told in the question that an object is on Earth, moving at speed of 50 m/s, and all the forces on it are perfectly balanced, and stay perfectly balanced.

Given the fact that all the forces that are acting on it are perfectly balanced, we would expect that the object would have to continue to move in the forward direction.

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The electric field E change if the distance between the test charge and the dipole tripled is B. C/3 Ep

Explanation:The electric field E created by an electric dipole moment p at a point on the axial line at a distance r from the center of the dipole is given by;

E = 2kp/r³

Where k is the Coulomb’s constant = 1/4πε₀εᵣ

Using the above equation, if the distance between the test charge and the dipole tripled (r → 3r), we can find the new electric field E’ at this new point.

E' = 2kp/r^3

where r → 3r

E' = 2kp/(3r)³

E' = 2kp/27r³

Comparing E with E’, we can see that;

E’/E = 2kp/27r³ / 2kp/r³

= (2kp/27r³) × (r³/2kp)

= 1/3

Hence,

E’ = E/3

= Ep/3C/3 Ep is the answer to the given question.

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Answer:

ii) Insulating materials that gain electrons when rubbed become negatively charged. c) An electric current is a flow of charge. d) An isolated metal object that is initially uncharged will gain charge if it is brought into contact with a charged object. e) A metal object is earthed by connecting it to the ground.

Explanation:

hope this helps you :)

Stars form from molecular clouds through a process known as stellar formation.

These clouds, characterized by low temperatures and high densities, provide the ideal conditions for atoms to combine and form molecules. With a mass range spanning from a few solar masses to millions of solar masses, molecular clouds serve as the birthplaces of new stars. The Pleiades cluster serves as a notable example of stars that have recently formed within such a stellar nursery.

The formation of stars from molecular clouds involves several key steps. Firstly, gravitational forces acting on regions of higher density within the cloud cause them to collapse under their own gravity. As the cloud collapses, it begins to fragment into smaller, denser clumps called protostellar cores. These cores continue to collapse, and their central regions become increasingly dense and hot. At this stage, they are known as protostars.

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Answer:

Hand soap: basic

chocolate milk: neutral

apple juice: acidic

shampoo: acidic

mouthwash: acidic

tap water: basic

Explanation:

Check your PH scale

1-6 = acidic

7 = neutral

8-14 = basic