According to the vespr model, the best arrangement of a given number of electron domains is _______.

Answer:

Electricity is the rate at which electrical energy is converted into motion, heat, or other forms such as electromagnetic fields.

307.4 μW/m² average magnitude of the poynting vector 5.00 mi with an average power of 250 kw?

S-average=power/area

power=250 kw

area=4π(8045)²

S-average=250/4π(8045)²

S-average=307.4 μW/m²

Power is produced when a force causes a displacement. Power has no bearing on how long it takes for a force to cause a displacement. The process's pace might range from swiftly concluding to taking some time. For example, it takes an abnormally long time for a rock climber to elevate her body a few meters over the cliff's edge. On the other hand, a trail hiker may swiftly raise her body a few meters if she selects the faster path up the mountain. Despite making the same amount of work, the hiker completes the task far quicker than the rock climber..

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The output force that only lifts the load is 484 N

Calculation

For this case, the relationship between the two forces is given by

[tex]F_{1} =nF_{2}[/tex]

Where,

F1: output strength

F2: input force

n: mechanical advantage

Then, replacing the values ​​we have:

[tex]F_{1} = 2.2*220[/tex] = 484 N

Hence, the output force that only lifts the load is 484 N

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The height of the cliff is 121.75 m.

An equation of motion, describes the behavior of a physical system in terms of motion as a function of time. More specifically, the equations of motion describe the behavior of a physical system as a set of mathematical functions related to dynamic variables. The equations of motion are:

For the given case we will use the following equation:

s = ut + 1 / 2 gt²

s = Height of the cliff

u = Initial velocity of rock (5 m/s)

a = Gravitational acceleration (9.8 m/s²)

t = Time (4.5 sec.)

s = (5 × 4.5) + ( 1 / 2 × 9.8 × 4.5² )

s = 22.5 + 99.25

s = 121.75 m

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The capacitor with a larger capacitance will allow the bulb to remain lit for a longer period of time as compared to the capacitor with a smaller capacitance. We first created the largest capacitance by decreasing the separation and increasing the area and connected it to 1.5 V.

We then disconnected it and connected it to the bulb and observed how it was glowing. Then we obtained the lowest capacitance by increasing the separation and decreasing the area and again connected it to 1.5 V.  Again, we disconnected it and connected it to the bulb and observed how it was glowing.

If you place a capacitor in a circuit containing a light bulb and a battery it will first charge the capacitor, and during that charge a non-zero current will flow through the circuit, lighting the light bulb. Capacitors can carry more current as the frequency of the supply voltage increases. As we have seen, alternating current can flow through a circuit with capacitance. The apparent resistance of a capacitor in an AC circuit is less than its DC resistance.

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The time taken to reach the maximum height, given that the ball has an initial velocity of 22 m/s is 0.62 s

The time taken to reach the maximum height can be obtained by using the following formula:

t = uSineθ / g

Where

Now, we shall determine the time taken to reach the maximum as follow:

t = uSineθ / g

t = (22 × Sine 16) / 9.8

t = 0.62 s

Thus, the time taken is 0.62 s

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The submerged fraction of a person when floating gently in fresh water is 0.989. The fraction of a person is submerged when floating gently in salt water with a density of 1027 kg/m³ is 0.963

fs = ρo / ρf

fs = Submerged fraction

ρo = Density of object

ρf = Density of fluid.

a ) For fresh water,

ρo = ρp = 989 kg / m³

ρf = ρw = 1000 kg / m³

fs = 989 / 1000

fs = 0.989

b ) For salt water,

ρo = ρp = 989 kg / m³

ρf = ρs = 1027 kg / m³

fs = 989 / 1027

fs = 0.963

Therefore,

a ) In fresh water, the submerged fraction is 0.989

b ) In salt water, the submerged fraction is 0.963

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Answer: It is zero

Explanation: Without kinetic energy a plate cannot move. It is impossible.

The distance the skier will go before they stop is 10193.68m.

Given ; Mass =100kg

coefficient of kinetic friction μ=0.05m

u=100m/s

v=0

μg=a

a= μg=0.05 x 9.81=0.4905 m/s²

v²-u²=2as

[v²-u²]/2a= s

-100²/2(0.4905)

s=10193.68m (neglecting the negative sign)

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The potential energy of a 25 kg bicycle resting at the top of a hill 3 m high will be 735 J

potential energy = m*g*h

where

m = mass

g = acceleration due to gravity

h = height

potential energy = 25 * 9.8 * 3 = 735 J

The potential energy of a 25 kg bicycle resting at the top of a hill 3 m high will be 735 J

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The de-Broglie wavelength of the baseball is 1.27×10⁻²⁵nm

λ=h/m

h is the Planck Constant =6.63×10⁻³⁴Js

m = mass = 148×10⁻³

=0.148kg

v= velocity =35.1m/s

λ=6.63×10⁻³⁴/0.148×35.1

λ=1.27×10⁻³⁴m

λ=1.27×10⁻²⁵nm

When learning about quantum mechanics, the de Broglie wavelength is a crucial idea. De Broglie wavelength is the wavelength that is connected to an object in relation to its momentum and mass. Typically, a particle's force and de Broglie wavelength are inversely related.

Some people believe that matter has both a wave- and a particle-like nature. De Broglie wavelength, so named after the discoverer Louis de Broglie, are the characteristics of a physical object that fluctuate in time or space while acting like waves. Matter waves are another name for it. It is strikingly reminiscent of the experimentally demonstrated dual nature of light, which exhibits both particle and wave behavior.

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James Bond should must wait for 6.82 second before jumping in order to safely make it into the car.

The speed of the car of the bad guy is 30m/s.

The speed of the helicopter of James Bond flying is 100m/s. Helicopter is flying at a height of 120m and it is behind 440m of the car.

The speed of the helicopter relative to the car is 70m/s.

So, with the speed James Bond has to jump into the car which is at a depth of 120m and at horizontal distance of 440m.

Assuming that James bond jump directly vertically down into the car.

We can write,

Time taken by the helicopter to cover the distance of 440 meters.

Time = distance/relative speed

Time = 440/70

Time = 6.82 seconds.

So, James Bond should wait for 6.82 seconds.

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Answer: an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis

just took the test

an upward-sloping line drawn on a graph with acceleration shown on the y-axis and force shown on the X-axis best describes a graph that would represent the relationship shown in the table

A graph is represented as pictorial form  the of data or numeric values in an organized manner which enables user to represent large amount of data in visual form.

There are 2 types of questions and the features of graphs are interpretation of given graphs or selecting a graph based on a verbal description.

The bar graphs are the most common type of graph, other graphs are dot plots, histograms, line graphs and scatterplots.

A Bar Graph is represented as the graphical display of data using rectangular bars of different parameters like heights, The structure can be represented  in the y axis contains values, and the x axis contains categories or time periods.  

A dot plot is a simple graphical representation  which shows the frequency with which items appears in a data set and present data on the x axis.

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The highest rate of speed a person can reach is called maximum speed.When athletes alter the magnitude or direction of their motion, or both.

The maximum speed the stone can attain is 8.366 m/s

Data;

   Mass = 10kg

   radius of tangential path = 7m

   Tension = 100N

Centripetal Force

The centripetal force of the stone can be calculated as

Fe =mv/r

v² = Tr/m

v=√Tr/m

v=√100*7/10

v=8.366 m/s

The tension acting on the string is given as

The maximum speed the stone can attain is 8.366m/s

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We cannot. The precise location of the electron cannot be predicted. The likelihood of where an electron will land can be predicted.

Only the likelihood of an electron being present at different sites can be predicted. The probability distribution can even tell you the average location of several electrons, but quantum theory cannot tell you the precise location of the electron. It can only give you a rough sense of where the one electron will end up.

The wave effectively splits into two new waves as it travels through both holes, each of which spreads out from a different slit. Then, there is interference between these two waves. A peak and a trough may occasionally cross paths where they cancel one another out.

The double-slit experiment, which was conducted to study the characteristics of light in the eighteenth century, has subsequently been found to illustrate the duality of photons as well as the ideas of superposition and quantum interference.

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222.22 m/s is how fast these waves are moving. Relationship between wave speed, wavelength, frequency, and period.

The equation wave speed = frequency x wavelength describes the relationship between wave speed, wavelength, frequency, and period.

Reason: A. Given that we are aware that the formula for calculating a wave's speed is:

v = f, where v is the wave's speed.

f = the wave's frequency

A wavelength is

Here, stands for the separation between adjacent wave crests.

f = 1/Time Period = (1/1 hr)(1 hr/3600 s) f = 2.77 x 104 s1 = 800 km = 8 x 105 m

Therefore,

v = (2.77 x 10⁻⁴ s⁻¹)(8 x 10⁵ m)

v = 222.22 m/s.    

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In the period 6 inner transition element series, the 4f orbitals begin to be filled after the element Lanthanum(La) and Cerium(Ce).

The d and f Block elements in the groups of 3 to 11 are also called transition elements and inner transition elements respectively. 4f and 5f orbitals of f-block elements are steadily in the latter of two long periods.

Inner transition element:

Inner transition elements are those elements in which the last electron enters the f-orbital. The elements in which the 4f and the 5f orbitals are progressively filled are called f-block elements. These includes lanthanoids( Z = 58 - 71) and actinoids (Z = 90 - 103).

Therefore period 6 inner transition elements begin with Lanthanum and Cerium.

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Solution: given that; velocity (v)=60km/hr, distance (d)=500km, time (t)=? From velocity=distance/time....... :. 60=500/t, cross-multiply..... 60t=500, divide both sides by 60...... 60t/60=500/60, t=500/60, t=8.33~. Therefore the bus took 8hours, 33 minutes to cover the distance of 500km.

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The difference in the force exerted by the ground during a race between these two species is 259.25

Forces are influences that can change the movement of an object. A force can change the velocity of an object with mass, i.e. accelerate it. Forces can also be described intuitively by pushing or pulling. A force has both magnitude and direction and is a vector quantity.

Force exerted by the lion:

Normal force = mg

170 = m × 9.8

m = 17.34 kg

Forward force = ma

= 17.34 × 10.0

= 173.4 N

Total force = Normal force + Forward force

Total force = 170 + 173.4

= 343.4 N

Force exerted by the man:

Normal force = mg

75 = m × 9.8

m = 7.65 kg

Forward force = ma

= 7.65 × 10.0

= 76.5 N

Total force = Normal force + Forward force

Total force = 7.65 + 76.5

= 84.15 N

The difference in the forces exerted by these species is:

343.4 N - 76.5 N = 259.25 N

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Using the concepts of gravitation, we find that it is true that tides are the periodic short term change in the height of the ocean surface at a particular place, generated by the long wavelength progressive waves that are caused by  interaction of gravitational force of the moon and sun.

Gravitational force is one of  basic forces of nature. It is a force that acts between two bodies and it is always attractive in the nature. Gravitational force is the force with which the objects are attracted to the centre of  earth. The motion of the planets and the moon are  governed by this force

Kepler’s first law All the planets will revolve around the sun in an elliptical orbit with the sun at one of the focus.

Hence, tides are the periodic short term change in the height of  the ocean surface at a particular place, generated by the long wavelength progressive waves that are caused by  interaction of gravitational force of the moon and sun is true.

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9.8m is the wavelength  of the automobile. The distance between identical points (adjacent crests) in adjacent waveform signal cycles carried in space or along a wire is defined as the wavelength.

The distance between identical points (adjacent crests) in adjacent cycles of a waveform signal carried in space or along a wire is defined as the wavelength. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).

A spectrum is the range of wavelengths or frequencies for wave phenomena. The term started with the visible light spectrum, but it is now used to refer to the full electromagnetic spectrum, as well as a sound or vibration spectrum.

wavelength=1470/150

                 =9.8m

In a series of waves, the distance between one peak and the next, or between one dip and the next. It is also one of the "yardsticks" used in radiation measurement.

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Copernicus adopted the heliocentric view because it better explained the movements of the heavens mathematically.


Copernicus' heliocentrism could eliminate Ptolemy's epicycles because retrograde motion could be seen as the result of a combination of Earth and planetary motions and velocities.

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Answer:

The answer is photons.

(a)  The diver's velocity when he hits the water is 13.795 m/s.

(b) The diver's net force while in the water was -3092.7N.

Newton's second law states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration an of its center of mass, F = ma.

The three equations of motion are: v = u + at, v2 = u2 + 2as, and s = ut + 12at2.

Given

A 65-kg diver jumps off a 9.7-m tower

(a) Using newton's equation of motion,

v² = u² + 2gs     ......... (1)

Where v = final velocity,

u = initial velocity,

s = height of the tower,

g = acceleration due to gravity.

Given: s = 9.7 m, u = 0 m/s (height jump), g = 9.81 m/s2.

Substitute into equation 1

v² = 0² + 2×9.81×9.7

v² = 190.314

v = √(190.314)

v = 13.795 m/s.

As a result, the driver's velocity when he hits the water is 13.795 m/s.

(b)

F = ma.    ......... (2)

Where F is the force applied to the diver, m is the diver's mass, and an is the diver's acceleration below the water's surface.

Also using

v² = u² + 2as .........  (3)

When the diver enters the water, u = 13.795 m/s, and when the diver comes to a complete stop, v = 0 m/s.

Given are the following values: s = 2.0 m, u = 13.795 m/s, and v = 0 m/s.

Substitute in equation 3

0² = 13.795²+2(2a)

0 = 190.30203 + 4a

-4a = 190.30203

a = 190.30203/-4

a = -47.58 m/s²

Also given: m = 65 kg,

Substitute into equation 3

F = (-47.58)(65)

F = -3092.7

The Force is negative because it acts against the diver's motion.

As a result, the net force exerted on the diver while in the water equals -3092.7N.

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The speed limit for a curved stretch of road with the coefficient of friction between the wheels and the road is 0.7 when the road is dry and 0.3 when the road is wet is √ 2.94 r m / s

Fc = m ac

Ff = μ N

N = m g

Fc = Centripetal force

m = Mass

ac = Centripetal acceleration

Ff = Frictional force

μ = Co-efficient of friction

N = Normal force

μ = 0.3 ( Wet value to taken to provide zero skidding under any condition)

g = 9.8 m / s²

The only force that is providing the centripetal force is frictional force.

m ac = μ m g

ac = 0.3 * 9.8

ac = 2.94 m / s²

ac = v² / r

2.94 = v² / r

v = √ 2.94 r m / s

Therefore, the speed limit for the curved stretch of road is √ 2.94 r m / s. She should perform her calculations with the coefficient of friction for wet pavement.

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When rock on Earth's surface is broken into smaller pieces, forming loose material  is called Weathering.

Physical weathering and chemical weathering are the two basic types of weathering. On this page, we discuss mechanical weathering (and more).

Rocks naturally fracture at a number of different levels. The borders between mineral grains can be a source of weakness in the rock. Sedimentary rocks are frequently stratified, and the layers are occasionally not tightly bonded together. As larger, more massive rocks are exposed by erosion, joints (cracks with no relative motion across them, merely spreading) may form in the rocks. These rock fissures become wider due to physical deterioration. Of course, biological weathering refers to weathering caused by living creatures.

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0.209T minimum magnetic-field magnitude is needed to balance the pull of gravity.

The weight of the mass suspended is equal the force produced by the current  carrying conductor in the magnetic field and this is the force needed to balance the pull of gravity

Fm = mg = BIL................................... Equation 1

Make B the subject of the equation

B = mg/IL.................................. Equation 2

Where B = magnetic Field, m = mass, g = acceleration due to gravity, I = Current, L = Length of the wire.

Given: m = 0.05 kg, I = 13 A, L = 0.18 m,

Constant: g = 9.8 m/s²

Substitute into equation 2

B = (0.05×9.8)/(13×0.18)

B = 0.49/2.34

B = 0.209T

The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field.

In the vicinity of a magnet, an electric current, or a shifting electric field, there is a vector field called a magnetic field where magnetic forces can be seen. Electric charges in motion and the intrinsic magnetic moments of elementary particles connected to the fundamental quantum characteristic known as spin create a magnetic field. As parts of the electromagnetic force, one of the four fundamental forces of nature, magnetic field and electric field are interdependent.

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If there is no air resistance, what is the net if there is 10 n of air resistance, what is the net force,the net force of an object is 0N and acceleration is 6N.

When compared to displacement and velocity, acceleration is like the wrathful, flaming dragon of motion variables. People may be terrified of it, it might be harmful, and if it's enormous, it draws your attention. When you're in a fast-turning corner in a car or go-kart or when you're in a plane during takeoff, you can feel your own acceleration.

Since velocity depends on both speed and direction, you can only accelerate by changing either one or the other, if not both. The object will be moving faster if the acceleration is pointing in the same direction as the velocity. Additionally, the item will slow down if the acceleration is pointing in the opposite direction from the direction of the velocity.

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In a car crash test, whether you let the car slam the wall or let the car plow into a tub of gelatin, the impulses are the same. However, you and your car will experienced greater force if the car slam the wall.

The impulse is defined as the change in momentum.

I = Δp = m . Δv

Where:

I = impulse

p = momentum

m = mass

v = velocity / speed.

From the Newton's second law of motion:

m = F/a

Where:

F = force

a = acceleration

Hence,

I = F / a . Δv

I = F . Δv/a = F . t

Where t = time period of the exerted force.

The initial and the final velocities of the car are the same for both cases. Hence, from the definition of impulse as the change of momentum, the impulses on both cases are the same. However, if the car experienced sudden stop, which means the force exerted on it in only a very short time, the exerted force on the car will be very large.

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