Identify the scenario, where the crash sensor of a car can possibly send signals to inflate the airbag in automobiles.

Answer:

Explanation:

The collision between the 93kg fullback and the 127kg defensive tackle is an example of an inelastic collision. In an inelastic collision, the total kinetic energy of the system is not conserved as some of the energy is transformed into other forms such as heat or sound. The resulting final speed of both players would be 0m/s, indicating that they have come to a stop after the collision.

The action or do is the cause or applied force while the reaction is the after effect of the applied force.

Newton's Third Law of Motion states: "For every action, there is an equal and opposite reaction." This means that if an object A exerts a force on object B, then object B will exert an equal and opposite force back on object A.

Examples of Newton's Third Law of Motion include:

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Explanation:

No. Calculating the potential is difficult if the electric field disappears. Drawing an equipotential surface in this situation is therefore impossible.

Any sort of charge causes an electric field to be associated to a location in space. The strength and direction of the electric field are expressed by the value of E, also referred to as the electric field strength, electric field intensity, or simply the electric field.

The field lines never cross each other. The surface of the charge is parallel to the field lines. The number of field lines and the charge's magnitude are inversely correlated.

Fields at the centre will be equal and opposite because they will have the same charges at the opposite two corners. The centre will have a zero net field.

Therefore,  A positive point charge is pointed straight away by the electric field, and a negative point charge is pointed directly in.

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The statement that would best describe the forces acting on the rope is that forces are in equilibrium.

Equilibrium force refers to a state in which the net force acting on an object is zero, meaning the object is either at rest or moving at a constant velocity.

This means that the sum of all forces acting on an object is equal to zero and there is no net acceleration. The object is said to be in a state of mechanical equilibrium.

So if both teams are pulling on the rope, but the rope is not moving, it simply means that the rope is in equilibrium, that is all the forces are equal.

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1180.7 meters far the tuning fork has fallen when waves of frequency 657 Hz reach the release point while taking the speed of sound in air to be 343 m/s.

We can determine the distance fallen by the tuning fork by considering the time it takes for the waves of frequency 657 Hz to reach the release point. We know that the speed of sound in air is 343 m/s, so the distance traveled by the sound waves is equal to the speed of sound multiplied by the time elapsed.

Let "d" be the distance fallen by the tuning fork and "t" be the time elapsed. The frequency of the tuning fork changes due to its motion under the influence of gravity, and this change in frequency is related to the distance fallen:

= f

= [tex]683 Hz \sqrt{*[1 - (d * g) / (343 m/s)^2]}[/tex]

here, "g" is the acceleration due to gravity.

Setting this expression equal to 657 Hz and solving for "d":

= 657 Hz

= [tex]683 Hz * \sqrt{[1 - (d * g) / (343 m/s)^2]}[/tex]

Solving for "d":

= d

= [tex](343 m/s)^2 * [1 - (657 Hz / 683 Hz)^2] / g[/tex]

adding the values:-

= d

= [tex](343 m/s)^2 * [1 - (657 Hz / 683 Hz)^2] / 9.80 m/s^2[/tex]

= [tex](343 m/s)^2 * [1 - (657 Hz / 683 Hz)^2] / 9.80 m/s^2[/tex]

= [tex](119056 m^2/s^2) * [1 - (657 Hz / 683 Hz)^2] / 9.80 m/s^2[/tex]

= [tex](12149.6 m^2/s^2) * [1 - (657 Hz / 683 Hz)^2] / 9.80 m/s^2[/tex]

= [tex](12149.6 m^2/s^2) * (1 - (657 Hz / 683 Hz)^2) / 9.80 m/s^2[/tex]

= [tex]12149.6 * [1 - (657 Hz / 683 Hz)^2] / 9.80 m[/tex]

= [tex]12149.6 * [1 - (657 Hz ÷ 683 Hz)^2] / 9.80 m[/tex]

= [tex]12149.6 * (1 - 0.0384) / 9.80 m[/tex]

= [tex]12149.6 * 0.9616 / 9.80 m[/tex]

= 1180.7 m

Therefore, the tuning fork has fallen a distance of 1180.7 m when waves of frequency 657 Hz reach the release point.

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A 30 m/s fast automobile is spotted by a police officer as it travel. The police officer will have to drive a distance of 450 meters to catch up to the speedy car.

To determine the distance the police officer must drive to catch up to the speeding car, we can use the concept of relative velocity. The relative velocity of the police officer with respect to the speeding car while its travel is given by:

= v rel.

= [tex]v_o_f_f_i_c_e_r - v_s_p_e_e_d_e_r[/tex]

here,

v officer is the velocity of the police officer

v speeder is the velocity of the speeding car.

Since, the police officer is accelerating, we need to determine the velocity of the police officer as a function of time.

= v officer

= a * t

here,

a is the acceleration of the police officer

t is the time elapsed since the officer started driving.

We want to find the time t when the relative velocity is zero, meaning that the police officer has caught up to the speedy car.

= 0

= a * t - v speeder

Solving for t:

= t

= [tex]v_s_p_e_e_d_e_r / a[/tex]

Now that we have the time t,

= d

= [tex]v_o_f_f_i_c_e_r * t[/tex]

= [tex]a * t^2 / 2[/tex]

Replacing t from the previous equation:

= d

= [tex]a * (v_s_p_e_e_d_e_r / a)^2 / 2[/tex]

Replacing the values of

=> a = 6 m/s²

=> [tex]v_s_p_e_e_d_e_r[/tex] = 30 m/s:-

= d

= 6 * (30÷6)² / 2

= 450 m

So, the police officer will have to drive a distance of 450 meters to catch up to the speedy car.

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06255 seconds. 1 second. There are exactly two ropes. The first rope's initial wave has a wavelength of 6 meters and a frequency of 1.5 hertz.

the separation between the corresponding spots of two successive waves is known as the wavelength. Two points or particles that are "corresponding points" are those that have finished the same fractions of their periodic motion and are in the same phase. Ordinarily, the wavelength of transverse waves—those with points vibrating perpendicular to the direction of their advance—is calculated from crest to crest or from trough to trough; for longitudinal waves—those with points vibrating parallel to the direction of their advance—the wavelength is calculated from compression to compression or from rarefaction to rarefaction. The Greek symbol lambda () is commonly used to represent a wave's length. Wavelength is defined as the product of the speed (v) and frequency (f) of a wave train in a given medium.

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The statement given is true. The angular resolution of a telescope is never less than its diffraction limit.

The larger telescope will always have the higher spectral resolution than the smaller telescope while observing at the same wavelength. The angular resolution of a telescope is at no time smaller than its diffraction limit.

Generally, many telescopes are devices that gather all the light within some aperture of diameter d and bring it to a focus. The limit to the angular resolution of a telescope is settled by diffraction. The angular resolving power or the resolution of a telescope is the smallest angle among the close objects which can be seen clearly to be separate.

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Both are dangerous on their own, but as they float through the air in Southern California's sunny climate, the sun bakes them into a new molecule called ozone, better known as smog.

Smog development and infiltration over Los Angeles. haze and air pollution in the entire community.

Burning sulfur-containing fossil fuels, particularly coal, causes sulfurous smog, also referred to as "London smog," which is characterized by a high concentration of sulfur oxides in the atmosphere.

The two primary substances in automotive exhaust are nitrogen oxides, which are created in scorching internal combustion engines, and hydrocarbons, which are derived from gasoline.

Therefore, Both are dangerous on their own, but as they float through the air in Southern California's sunny climate, the sun bakes them into a new molecule called ozone, better known as smog.

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The roller coaster used 468KJ of potential energy that was then transformed to thermal energy.

visualise a roller coaster drive that converts potential energy to thermal energy The roller coaster's descent generates kinetic energy. The bottom of the roller coaster's track is where the highest kinetic energy is produced. As the object starts to rise, the kinetic energy turns into potential energy.

A roller coaster moves because potential energy is transformed into kinetic energy. As the roller coaster vehicles are driven to the top of the first hill, their potential energy increases. The cars fall, converting potential energy into kinetic energy.

The roller coaster ride transforms the stored potential energy at a height of 135m into kinetic and thermal energy.

P.E = K.E final + Thermal energy

mgh = 1/2mv² + TE

TE=> mgh - 1/2 mv²

=> 1500( 9.8x 135 - 1/2 x 45²)

=>465.75 KJ approximately

=> 468KJ

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The percentage that is the true weight of the goods being marked up by the shopkeeper is 3.22%

In physics, mass is a numerical value of inertia, a basic property of all matter. It generally refers to an object of matter in the universe opposition to change its speed or motion in answer to the force applied to it. Some examples of objects with mass include a table, a sofa, your bed, a baseball, a glass, and even air. The weight of an item defines that it is heavy or light.

Percentage change:

Wd=W′d ′

W( 61.8-1.01 )=W'( 61.8+1.01 )

W60.79=W'62.81

W'=W60.79/62.81

W'=0.9678W.

Now let find the percentage change as:

W-W'÷W 100%

=W-0.9678W÷W 100%

Percentage change=100%-96.78%

Percentage change=3.22%

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The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity.

How to define velocity?

It will take the trout 2.8 minutes to reach the boat.

Use the following formula to solve for the time it takes the trout to reach the boat:

time = distance/velocity

distance = 9,800 centimeters (the starting distance between the trout and the boat)

velocity = 3,500 centimeters per minute (the velocity of the trout swimming toward the boat)

put in the values:

time = 9,800 / 3,500

time = 2.8 minutes

So, it will take the trout 2.8 minutes to reach the boat.

The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity. Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is traveling along a path. In other words, velocity is a vector, whereas speed is a scalar value. Since it is a vector quantity, the definition of velocity requires both magnitude (speed) and direction.

We can say that forces produce changes in velocity because they alter an object's speed or direction. Keep in mind that acceleration is a modification of velocity.

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The ratio of car speeds at the bottom of the slope would be 2:1 for release heights of 15 cm and 60 cm, respectively. Thus, option D is correct.

The variable for velocity is also bold because it is a vector, as opposed to the variable for speed, which is italics since it is a scalar quantity.

Gravity continuously accelerates an object (increases its velocity) during free fall until it reaches terminal velocity. In particular, for every second that passes, gravity accelerates a falling item by 9.8 meters per second (m/s).

The rate at which the location of an object shifts in any direction. Speed is measured as the ratio of the distance travelled to the time it took to cover that distance.

Therefore, Similar to speed, velocity is measured in meters per second (m/s), but because it is a vector, you must also take direction into account.

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Wavelength is a physical property of some energies that corresponds to the distance between wave peaks (characteristics of light waves, distance between the peaks of consecutive waves).

The amplitude and wavelength of a wave are two physical properties. Measured from the wave's highest point (peak or crest) to its lowest point, the amplitude of a wave indicates its height (trough). Wavelength is the distance a wave travels between peaks.

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). The wavelength is more frequently described in nanometers (nm), which are units of 10-⁹ m, or angstroms (Å), which are units of 10-¹⁰ m, for infrared (IR), visible light (UV), and gamma radiation (γ)

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Increases it because it pushes it farther away, yet the absolute magnitude stays the same. It causes it to grow since it is being moved further away, but the magnitude in absolute terms remains constant.

In terms of physics, magnitude is just “distance or quantity.” It displays an object's size, direction, or motion in absolute or relative terms.

In physics, the term “magnitude of force” refers to the sum of all applied forces. If the star is more than 10 parsecs away, the apparent magnitude will be higher (dimmer) than the absolute magnitude, and m – M will have a positive value.

When all forces are pulling in the same direction, the force becomes stronger. If an object is subjected to a variety of forces acting in different directions.

Therefore, used to indicate the size or scope of something. In physics, the term “magnitude” often refers to a size or amount.

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Human body weight is equal to 600 N. Gravitational acceleration on earth: g = 10 m s 2 Man's weight on Earth is 600 kg. 10 sq . ft = 60 kg Since mass is consistent everywhere, we are aware of this.

What does gravity mean?

The attraction of items by the earth is known as gravitation. The earth's gravity causes objects that are hurled upward to reach a specific height before falling to the ground. 2. Space objects may be drawn to one another by gravity. the attraction force between the sun and the other planets.

Gravitational interaction: What is it?

The weakest of the four basic forces of nature, attraction between physical things having mass or energy is a natural phenomena. also known as gravity. the process or act of moving while being drawn to something. check out gravitational interaction. a movement in the direction of a source of desire: the middle classes' attraction.

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The magnitude of the force is -9.44 * 10^-13 * B where B is the magnetic field.

The force exerted on a charged particle in a magnetic field is given by the equation:

F = q * v * B

where q is the charge of the particle, v is its velocity, and B is the magnetic field.

Since an electron has a charge of -1.6 x 10^-19 C, the magnitude of the force exerted on it by the magnetic field is:

F = q * v * B = -1.6 x 10^-19 C * v * B

To find the velocity of the electron, we can use the equation for the work

done by an electric field on a charged particle:

W = q * V

where W is the work done, q is the charge of the particle, and V is the potential difference.

Since the work done is equal to the change in kinetic energy of the particle, we have:

W = (1/2) * m * v^2, where m is the mass of the electron

So,

q * V = (1/2) * m * v^2

Solving for v, we get:

v = sqrt(2 * q * V / m)

Plugging in the values, we get:

v = sqrt(2 * -1.6 x 10^-19 C * 100 V / 9.11 x 10^-31 kg) = 5.9 x 10^6 m/s

Finally, the magnitude of the force exerted on the electron by the magnetic field is:

F = q * v * B = -1.6 x 10^-19 C * 5.9 x 10^6 m/s * B = -9.44 * 10^-13 * B

The value of the magnetic field B must be specified in order to find the exact value of the force.

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The efficiency of a petrol car engine is 40%. The speed of the car is 9.0 m s−1 when the power developed by the engine is 20 kW. the car can go with one liter of petrol when driven at this speed is  9.0 m/s.

The amount of energy in one liter of petrol is 45 MJ. The efficiency of the engine is 40%. Therefore, the amount of energy converted to useful work is 18 MJ.   The power developed by the engine is 20 kW. Therefore, the time taken for the car to travel one kilometer is Time = (1 km)/(9.0 m/s) = 111.11 s  .

The amount of energy used to travel one kilometer is   Energy = (20 kW)(111.11 s) = 2222.2 kJ   Therefore, the amount of energy available from one liter of petrol is   Energy = (45 MJ)(1000 kJ/MJ) = 45000 kJ   The car can travel  Distance = (45000 kJ)/(2222.2 kJ/km) = 20.22 km with one liter of petrol when driven at a speed of 9.0 m/s.

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Answer:

A. Applied force

B. Normal force

C. Frictional force

D. Gravitational force

Explanation of the forces with examples shown in the diagram:

A. Applied force:- A pushing or pulling force used to move an object. A person or any other object in this situation applies a force to an object. A chair being moved to the opposite side of the room, as an example.

B. Normal force:- This force is applied to a moving object when it comes into contact with a steady object. A normal force is typically applied horizontally between two objects that are in touch. An illustration would be a book on a table or a person leaning against a wall.

C. Frictional force:- Friction is created as an object moves across a surface. Slider or static forces can cause friction. The characteristics of the two interacting surfaces determine friction. A ball rolling on the floor is one example, as is a book sliding over the table.

D. Gravitational force:- This is the force that causes the Earth, the moon, and other extraordinarily large objects to pull other objects toward them. Every object on Earth is subject to gravity, which pulls objects downward and toward the planet's centre.

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The answer is yes, but the polarity of the will be different from the battery's. Considering that only the common space between the two plates will be taken into account.

No charge is stored in capacitors. The imbalanced charge that is stored by capacitors. A capacitor's two plates will each have a charge of one coulomb, thus if one plate has one coulomb of charge and the other has one less, the total charge (added up across both plates) is zero.

The capacity to store electric charge is higher on larger plates. In light of this, capacitance rises as plate area does. The electrostatic force generated between the plates is inversely correlated with capacitance.

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The constant force required to cause the 0.5-kg slider to have a speed at position 2 is proportional to the square root of the product of the modulus of the spring and the mass of the slider, and is directly proportional to the speed of the slider at position 2.

The kinetic energy of the slider at position 2 can be expressed as:

[tex]Ek = 0.5 * m * v^2[/tex]

where m is the mass of the slider and v is its speed at position 2.

[tex]0.5 * k * x^2 = 0.5 * m * v^2[/tex]

[tex]k * x^2 = m * v^2[/tex]

[tex]x = sqrt(m * v^2 / k)[/tex]

The force required to compress the spring by a distance x is equal to:

[tex]F = k * x[/tex]

Substituting the value of x, we get:

[tex]F = k * sqrt(m * v^2 / k)[/tex]

Simplifying this expression, we get:

[tex]F = sqrt(k * m) * v[/tex]

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A voltmeter positioned between the positive thinking requires connection and the positive pin of the starter registers less than.01 volt when the engine is running. This reading's origin could

What is the purpose of a voltmeter?

voltmeter: a device for measuring voltage. The device used to measure the electric differences between two places in an electrical circuit is called a voltmeter. Digital voltmeters utilize an analog-to-digital converter to display voltage as a numerical value; analog voltmeters swing a pointer across a scale in response to the voltage of the circuit.

What kinds of voltmeters are there?

Voltmeter classification or types. We offer a variety of voltmeter kinds, most of them are based on the construction principle. PMMC Voltmeter (Permanent Magnet Moving Coil). Voltmeter for moving iron (MI). Voltmeter of the Electro Dynamometer kind. Voltmeter of the Rectifier Type Voltmeter of the induction kind. Voltmeter of the electrostatic variety.

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The water in the tank has become superheated and is in the vapour phase.

Water has a saturation pressure of 4.69 MPa at 260°C. The water pressure in the tank is 5.5 MPa, which is larger than the saturation pressure. So, the water in the tank has become superheated.

Superheated water is water that is in the vapour phase but at a temperature greater than its typical boiling point. This can happen when water is heated at a continuous pressure higher than the saturation pressure for that temperature. Despite being beyond the typical boiling point, the water molecules in this state have a lot of energy and are not condensing into a liquid.

Understanding the phase of water in a given circumstance is critical in a variety of engineering and scientific applications. Understanding the phase of water in a steam turbine, for example, is critical for effective operation and minimising equipment damage in power plants. Understanding the phase of water in food preparation can effect the quality and preservation of the product.

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The maximum angle at which the cup can be tilted without falling over is when the gravitational torque is equal and opposite to the torque produced by the weight of the cup acting on the point of contact with the table.

The maximum angle at which a cup can be tilted before it falls over depends on the ratio of the radius of the base of the cup to its height. If the cup is a uniform circular cylinder, then its center of mass is located at a distance of half the height of the cup from the origin. When the cup is tilted, the gravitational force acting on the cup produces a torque that tends to rotate the cup around the point where it touches the table.

By setting these two torques equal to each other and solving for the maximum angle, we can determine how far the cup can be tilted before it falls over.

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Answer:

16.37 kg.

Explanation:

The formula for kinetic energy is:

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

where KE is kinetic energy, m is mass, and v is velocity.

We are given KE = 4.33 × 10³ J and v = 23 m/s.

Plugging these values into the formula, we get:

4.33 × 10³ J = (1/2) * m * (23 m/s)^2

Simplifying and solving for m, we get:

m = 4.33 × 10³ J / [(1/2) * (23 m/s)^2]

m = 4.33 × 10³ J / (0.5 * 529 m^2/s^2)

m = 4.33 × 10³ J / 264.5 J/(kg·m^2/s^2)

m = 16.37 kg

Therefore, the mass of the car is approximately 16.37 kg.

Answer:

Explanation:

The kinetic energy of an object is equivalent to 1/2 times its mass times the square of its velocity. K.E. = 1/2(m)(v^2), m is in kg, and v is in m/s.

4,330J = (1/2)(m)(529)

m = 8,660/529 = 16.37kg

We find this to be a very small mass; but then there is no description of the car proper.

The momentum of a 2kg mass moving at 25 m/s is 50kgm/s.

Momentum in physics refers to the tendency of a body to maintain its inertial motion.

It is the product of its mass and velocity, or the vector sum of the products of its masses and velocities i.e.

p = mass × velocity

According to this question, a 2kg mass is moving at 25 m/s. The momentum of the body can be calculated as follows:

Momentum = 2kg × 25m/s

Momentum = 50kgm/s

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If the Earth were moved to four times its current distance from sun , then size of gravitational force of Sun on  Earth would be 16 times smaller.

The Gravitational Force between two objects is proportional to the product of their masses and inversely proportional to square of distance between them.

It is denoted mathematically as :  F = G×(m₁×m₂)/r²  ;

where F is = gravitational force, G is = gravitational constant , m₁ and m₂ are the masses of the two objects, and r is = distance between them.

If the Earth were moved to 4 times its current distance from the Sun, the distance between them would increase by a factor of 4,

So,  gravitational force will decrease by a factor of = 4² = 16.

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Answer: Yes

Explanation: It has space in its valence shell for an additional electron.

The answer to this question is yes, a neutral hydrogen atom does have an attraction for an additional electron. This attraction arises from the fact that the positively charged proton in the nucleus of the atom attracts negatively charged electrons. When an additional electron is brought near the hydrogen atom, it will be attracted to the positively charged proton in the nucleus. The attraction between the proton and the electron is quantified by Coulomb's law.

Neutral hydrogen atoms consist of a single proton in the nucleus and a single electron in the outer shell. The electron is negatively charged, while the proton is positively charged. Thus, the electron and the proton are attracted to each other by the electromagnetic force, creating a stable neutral atom. The question asks whether the neutral hydrogen atom has an attraction for an additional electron.

Coulomb's law states that the force between two charged particles is proportional to the product of their charges and inversely proportional to the distance between them. In the case of the hydrogen atom, the force between the electron and the proton is given by:

F = kq1q2/r^2

where F is the force, k is Coulomb's constant, q1 is the charge of the electron, q2 is the charge of the proton, and r is the distance between them.

Since the electron has a negative charge and the proton has a positive charge, their product (q1q2) is negative, which means the force between them is attractive. As the distance between the electron and the proton decreases, the force between them increases. Therefore, when an additional electron is brought near the hydrogen atom, it will be attracted to the positively charged proton in the nucleus.

However, there is a limit to how many electrons can be added to a hydrogen atom. When a second electron is added, it will be repelled by the first electron, and the repulsive force between the two electrons will become stronger than the attractive force between the electron and the proton. This means that adding a second electron to a hydrogen atom requires more energy than adding the first electron. In fact, the energy required to add a second electron is so high that it is unlikely to occur under normal conditions. Therefore, a neutral hydrogen atom can attract an additional electron, but it can only form a negative ion with a single additional electron.

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"A magnetic disturbance on the sun's surface is called sunspot." The correct option is D.

The Sun's gases are constantly moving, which stretch and twist the magnetic fields. This motion creates a lot of activity on the Sun's surface, known as solar activity.

Sunspots are areas of lower surface temperature linked with concentrated magnetic field flux and vigorous magnetic activity on the Sun's photosphere that are darker than the surrounding photosphere regions on the visible solar disc. They typically come in opposite magnetic polarity pairs.

A geomagnetic storm is a significant disruption of the magnetosphere that happens when energy from the solar wind is exchanged very effectively into the space environment around Earth.

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The required speed of the cyclist 1 is 16 mile per hour and the speed of the cyclist 1 is calculated to be 32 mile per hour.

Distance between cyclists is given as 144 miles.

If v is the speed of one bicycle, the speed of the other cyclist is twice as fast.

Speed of second cyclist = 2 × v

Time taken by them to meet each other is 3 hr

The relative velocity between them as they approach one another is given by

Relative speed is equal to v + 2v = 3v.

We have,

Distance = Time × Velocity

144 = 3 × 3 v

9v = 144

v = 16 mile per hour

Thus, speed of cyclist 1 is v = 16 mile per hour, speed of cyclist 2 is 2v = 32 mile per hour.

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