Select the correct answer from each drop-down menu. complete the sentence to describe the distance and ruler postulates. between every pair of distinct points, there is a positive unique number called the , which can be determined as the of the corresponding real numbers of the two points.

Fetch is the distance over which the wind blows over open water generating mechanical waves; option D

Waves are disturbance which occur in a substance or medium which project energy as they travel along a particular plane or direction.

There are two types of waves:

Mechanical waves are waves which involve the disturbances that occur in particulate matter and which require a material medium for their transmission.

Fetch is an area of ocean or lake surface over which the wind blows in a constant direction, thus generating waves.

In conclusion, mechanical waves require material media for transmission.

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The dripping faucet onto the wave causes the frequency to stay the same throughout, it just moves up and down.

When a wave is passed through the single slit, diffraction occurs. The light spreads out and after it passes through the slit, it interferes with itself.

Answer:

no :)

Explanation:

ezzzzzzzzzzzzzzzzzzzz

Liquid water is not itself wet, but can make other solid materials wet. Wetness is the ability of a liquid to adhere to the surface of a solid, so when we say that something is wet, we mean that the liquid is sticking to the surface of a material.

The electric field 4cm from the wire is

[tex]É = 10nc { }^{ - 1} [/tex]

Given:

charge is distributed uniformly along a long straight wire.

electric field 2cm from the wire is 20n/c

To find:

electric field 4cm from the wire

what is electric field?

Electric field is the region around charge particle or charged body in which if another charge is placed it experiences electrostatic force.An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

[tex]E  ∝ \frac{1}{r} [/tex]

[tex] \frac{E}{É} = \frac{r2}{r1} [/tex]

[tex] \frac{20}{ É } = \frac{4}{2} [/tex]

[tex]É = \frac{40}{4} [/tex]

[tex]É = 10nc {}^{ - 1} [/tex]

thus the electric field 4cm from the wire is

[tex]É = 10nc { }^{ - 1} [/tex]

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The energy (in j) of one photon of this radiation is  [tex]2.518*10^{-23}[/tex]J

Given,

frequency = 3. 8 x [tex]10^{10}[/tex] hz, h = Planck's constant = 6.626*[tex]10^{-34}[/tex]Js

E=frequency*Planck's constant=3. 8 x [tex]10^{10}[/tex] hz*6.626*[tex]10^{-34}[/tex]Js=[tex]2.518*10^{-23}[/tex]J

In physics, energy is the quantifiable attribute that is transferred to a body or to a physical system, and it can be seen as heat and light as well as while work is being done. The law of conservation of energy asserts that although energy can change its form, it cannot be created or destroyed. Energy is a conserved quantity. The International System of Units (SI) uses the joule as the unit of measurement for energy, which is defined as "the energy transferred to an object by the work of moving it a distance of one metre against a force of one newton."

A radio wave has a frequency of 3. 8 x 1010 hz. what is the energy (in j) of one photon of this radiation? (use scientific notation in your answer: 1. 0e29)

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Answer:

            2500W

Explanation:

                     P = W/t

             As we know that

                  W = mgh

             so:

                     P = mgh/t    

            put values

                      P = (200)(10)(25) / 20

                       P = 2500W

According to contemporary scientific understanding, the thought that the Milky Way Galaxy energy is home to a civilization millions of years more developed than ours is. one reasonable solution to Fermi's paradox.

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Tangential speed of the tip of the bat is 2.2 m/s

Given:

angular speed = 2 rad/s

radius of ball = 1. 1-m

To Find:

tangential speed

Solution: Tangential velocity is the linear speed of any object moving along a circular path. A point on the outside edge of a turntable moves a greater distance in one complete rotation than a point near to the center.

The rate of variation in the matter's tangential velocity along a circular path is known as tangential acceleration.

A tangent line traced to the circle at the location of the object points in the direction of the velocity vector at any given time.

Here, v is Tangential speed t is the time ω is angular speed and r is radius

Vt = ω r

V = 2 x 1.1

V = 2.2 m/s

Hence the Tangential speed is 2.2m/s

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The cost of operating the iron is $2186.49.

To find the answer, we have to know about the power.

              [tex]cost=power(kW)*t(hours)*(price/ kWh)[/tex]

                        [tex]P=IV=5.2*240=1248W[/tex]

                     [tex]t=2*365*24hours=17520hours.[/tex]

                  [tex]cost=1248*10^{-3}*17520*0.10} =\$2186.49[/tex]

Thus, we can conclude that the cost of operating the iron is $2186.49.

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Earth is a good example of inertial frame of reference.

To find the answer, we have to know about the Inertial frame of reference.

Thus, we can conclude that, Earth is a good example of inertial frame of reference.

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The possible reasons why there is no planet between mars and Jupiter are the asteroid belt. But near the asteroid belt, a moon of mars is near with a big asteroid.

The asteroid belt is one of the proposed explanations for that there is no planet between Mars and Jupiter. However, a Mars moon is close to a large asteroid near the asteroid belt.

The asteroid belt is defined as a torus-shaped area in the Solar System lying roughly between Jupiter and Mars' orbits. It is home to a large number of solid, irregularly shaped things of various sizes, but far smaller than planets, known as asteroids or minor planets.

The asteroid belt is significant because it is the source of the majority of asteroids that pass close to Earth and constitute a possible threat to life on the planet, particularly human constructions.

Therefore, One of the possible theories for the lack of a planet between Mars and Jupiter is the asteroid belt.

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The magnitude of the electric field on the master charge is 1.008 x 10¹⁰ N/C, and the force on the test charge is 5.04 x 10⁹ N.

E = kq/r²

where;

E = (9 x 10⁹ x 0.63)/(0.75²)

E = 1.008 x 10¹⁰ N/C

F = Eq

where;

F = (1.008 x 10¹⁰) x (0.5)

F = 5.04 x 10⁹ N

Thus, the magnitude of the electric field on the master charge is 1.008 x 10¹⁰ N/C, and the force on the test charge is 5.04 x 10⁹ N.

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With more turns of wire within the coil, the greater the strength of the static magnetic field around it.

Electromagnetic induction uses the relationship between electricity and magnetism whereby an electric current flowing through a single wire will produce a magnetic field around it. If the wire is wound into a coil, the magnetic field is greatly intensified producing a static magnetic field around itself forming the shape of a bar magnet giving a distinct North and South pole.

Likewise, if we kept the bar magnet stationary and moved the coil back and forth within the magnetic field an electric current would be induced in the coil. Then by either moving the wire or changing the magnetic field we can induce a voltage and current within the coil and this process is known as Electromagnetic Induction and is the basic principle of operation of transformers, motors and generators.

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A 60-m long wire is coiled so that it makes a coil containing 140 square loops, one on top of each other. if the wire carries a current of 21 a, the magnetic dipole moment of the coil will be 0.24 Am2

Dipole moment = i * A

Area = ?

given total length of the wire = 60 m number of square loops = 140total length of the wire  =  n * ( circumference of one loop) circumference of one loop = total length of the wire   / n  = 60 / 140 = 0.429 m circumference of one loop  = 4 * (side of the square )                                  0.429 = 4 * a a = [tex]0.107 m[/tex]

Area of  loop = [tex]a^{2}[/tex]=  [tex](0.107)^{2}[/tex]  = [tex]0.01145 m^{2}[/tex]

Dipole moment = i * A  = 21 * 0.01145 = 0.24 A  [tex]m^{2}[/tex]

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Perfect question! So to start,

⇒ Concepts: Relative, Velocity

(Relative: - adjective- existing or having its specific nature only by relation to something else; not absolute or independent. -noun- something having, or standing in, some relation or connection to something else).

Velocity:

(1) Rapidity of motion or operation; swiftness; speed.

(2) The time rate of change of position of a body in a specified direction

(3) The rate of speed which something happens; rapidity of action or reaction.

Now, let's get onto relative velocity.

Assume you are operating a vehicle and pass another vehicle from behind. Actually, what happens is that the driver of the car behind you notices the one approaching from behind and ultimately turns around. Although the driver in front perceives it that way, the person on the ground does not see the automobile as driving backward. Relative velocity is what it is.

When riding in a car, bus, or train, you may see that numerous exterior objects are moving backward, including trees, buildings, and other objects. But are they actually regressing? No, you're very sure that the only thing moving while the trees are still on the ground is your car. What gives, therefore, that the trees seem to be going backward? Also, even if your fellow passengers are moving, they will look immovable to you since they are moving.

It's because you and your other passengers are moving in unison within your frame. It follows that you and the passengers are moving at the same speed. The trees are still, but you are moving. Trees are therefore moving relative to you and the other passenger at a certain speed. The velocity differential between you and the tree is that relative velocity.

Thank you,

Eddie

Answer:

Correct option is D)

Steel

Answer:

Steel gives

Explanation:

Glass: 50−90GPa

Rubber:0.01−0.1GPa

Steel:200GPa

Copper: 117GPa

The Sun's apparent yearly path across planet Earth's sky against the background stars wouldn't be described as the celestial equator.

A solar system can be defined as a collection of the outer and inner planetary (astronomical) bodies alongside the Moon that are in orbit around the Sun, in slightly elliptical orbits.  

Basically, there are nine (9) planets in the solar system and these include;

Based on astronomical records and information, we can infer and logically deduce that the Sun's apparent yearly path across planet Earth's sky against the background stars wouldn't be described as the celestial equator.

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The feather fell at the same rate as the hammer.

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

Gravity accelerates both objects at the same rate, but if no other force than gravitational force act on the object , and as we know that air resistance affect the rate of fall but at moon their is no air  resistance. Hence their is no other force acting on the feather and hammer than the gravitation force of moon .

Because the Apollo crew were essentially in a vacuum, there was no air resistance,  the feather fell at the same rate as the hammer. This is exactly what Galileo had concluded hundreds of years before: all objects released together fall at the same rate regardless of mass.

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The mass ratio which would be required to launch a single rocket into space in the most possible efficient way is that the ratio of rocket mass to fuel mass be; 1: 14.

According to the task content, it follows that the best single rockets made by humans have an initial to final mass ratio of about 15.

In essence, it follows that if the total mass initially was 15 mass units, the final mass would be 1 mass unit.

Consequently, 14 mass units must have burned as fuel in the rocket.

On this note, it follows that the mass ratio which would be required to launch a single rocket into space is; 15: 1 and this means there are 14 mass units of fuel for the 1 mass unit of actual rocket.

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When a car is coasting downhill, the kinetic and potential energies are increasing and decreasing respectively.

Kinetic energy is the energy possessed by an object because of its motion, equal to one half the mass of the body times the square of its speed.

Potential energy, on the other hand, is the energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).

According to this question, a car going downhill will begin to speed because there is lesser friction. This suggests that the kinetic energy increases while the potential energy decreases.

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Two point charges, feel a force of 1. 0 n when they are 2. 0 cm apart. if they are moved further apart to 8. 0 cm. The electric force between them will be F2 = 1/16 J

A charged particle, also called an ion, is an atom with a positive or negative charge. This happens whenever something called an ionic bond forms. Two particles that have different numbers of electrons (the smallest particle in an atom which is negative) start reacting to each other.

According to Coulomb's law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. It acts along the line joining the two charges considered to be point charges.

F1 = K q1*q2 / [tex]r1^{2}[/tex]

1 =  K q1*q2 / [tex]2^{2}[/tex]

F2 =  K q1*q2 / [tex]r2^{2}[/tex]

F2 =  K q1*q2  / [tex]8^{2}[/tex]

F1 / F2 = 64 / 4

1 / F2 = 16 / 1

F2 = 1/16 J

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When you have two of the same charges along a horizontal line, The electrical field is the greatest the closest it is to the charges. And there will be a zero charge in between the two like charges.

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge.

The formula of electric field is given as;

E = F /Q

Where,

E is the electric field.

F is a force.

Q is the charge.

The electrical field is the greatest the closest it is to the charges because there will be high electric strength and electric field strength is greatest where the lines are closest together and weakest where lines are furthest apart.  Also , there will be a zero charge in between the two like charges.

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Pressure can be calculated by Pressure=Force/Area.

Therefore, if the area is decreased or reduced then pressure will be increased.

The physical amount of force applied to a certain region is known as pressure. Pressure is defined as force per unit of area. The pressure being applied to a body may be calculated by taking the amount of force being applied and dividing it by the area of contact.

Pressure=Force/Area.

two examples where the factor perpendicular is practically used to increase pressure

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A fixed container containing an ideal gas is heated. The pressure of the gas increases because the molecules move faster.

You can speed up the motion of the molecules in a gas by heating it. The pressure will rise and there will be greater impacts on the container's walls.

The container walls are pressed against by the combined force of the collisions. The energy you provide when you heat the gas makes the gas's particles more kinetically energetic and put more pressure on the container.

As the temperature rises, the pressure must as well since pressure is the force the particles per unit of area exert on the container.

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The wavelength of the wave is 23.55 rad/s.

What is a wavelength simple definition?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

Distance b/w one crest and one trough is  λ/2 and b/w two crests or two trough it is  λ.

Therefore from 2nd crest to 6th trough the total distance

                   = 4 λ +  λ /2 => 9 λ/2

that is given as:

9 λ/2 = 24 cm

λ= 16/3 cm

V = w/k => w × λ /2pi => w = 2 × 3.14 × 20 × 3/16 => 23.55 rad/s

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The electric potential at certain point is given by,v=-7.5x²-3x ,where v is in volts and x is in meters. then the electric field at that point is -(15x+3).

Given,

The electric potential at certain point is given by,

v=-7.5x²-3x .

where v is in volts and x is in meters.

We know,

electric potential (v) =electric field ×radius

Electric potential is defined as the amount of work needed to move a charge from reference point to the specific point against an electric field.

Also, electric field (E) =dv/dx

Electric field at a point is the force experienced by the unit positive charge placed at that point.

E=d(-7.5x²-3x)/dx=-15x-3

Thus ,the electric field at that point is given by -(15x+3 ).

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Disclaimer:the data in the question is incorrect .here is the complete question .

Question: the electric potential at a certain point is given by v=-(7.5x²+3x).where v is in volts and x is in meters.what is the electric field at that point?

The speed of the particle is 1.35 * [tex]10^{4}[/tex] m /s

The de Broglie equations relate the wavelength λ to the momentum p, and frequency f to the total energy E of a particle: where h is Planck's constant.

The wavelength (λ) that is associated with an object in relation to its momentum and mass is known as de Broglie wavelength.

λ = h / p

m= mass = 6.67∗[tex]10^{-27}[/tex] Kg

λ = 7.31 pm = 7.31 * [tex]10^{-12}[/tex] m                          (1 pm = [tex]10^{-12}[/tex] m)

h= Planck's constant = 6.62∗[tex]10^{-34}[/tex][tex]m^{2}[/tex]/Kg.s

v= velocity of particle = ?

λ = h / mv

v = h / mλ

  = [6.62∗[tex]10^{-34}[/tex]] / [6.67∗[tex]10^{-27}[/tex]] [7.31 * [tex]10^{-12}[/tex]]

  = 0.135 * [tex]10^{5}[/tex] m /s.

  = 1.35 * [tex]10^{4}[/tex] m /s

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Direction of |a+b| is south east and that of |a-b| is north east.

Given

a = 3i - 2j

b = -i - 4j

To find,

a+b =?

a-b =?

|a+b| = |(3i - 2j - i - 4j)|

        = |2i - 6j|

        = [tex]\sqrt{2^{2} + (-6^{2}) }[/tex]

        = [tex]\sqrt{4+36}[/tex]

        = [tex]\sqrt{40}[/tex]

        = [tex]2\sqrt{10}[/tex]

|a-b| = |(3i - 2j) - (-i - 4j)|

       = |3i -2j + i + 4j|

       = |4i + 2j|

       = [tex]\sqrt{4^{2} + 2^{2} } \\[/tex]

       = [tex]\sqrt{16+ 4}[/tex]

       = [tex]\sqrt{20}[/tex]

       = [tex]2\sqrt{5}[/tex]

Direction of |a+b| is south east (|2i - 6j|, this shows 2 units to the right and 6 units down)

Direction of |a-b| is north east (|4i + 2j|, this shows 4 units right & 2 units up)

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A satellite is 1200 k above the earth (radius = 6400 k); it completes one revolution in 90min. what is the linear speed?

530.58 (1200+6400)*pi*2/90

The measurement of a moving object's actual distance traveled is called linear speed. Linear speed is the rate of motion of an object along a straight line. In plain English, it is the distance traveled along a linear path in the allotted amount of time.

A pseudovector used in physics to express how quickly the angular location or orientation of an item changes over time is called an angular velocity or rotational velocity  The pseudovector's direction is normal to the instantaneous plane of rotation or angular displacement, and its magnitude corresponds to the object's angular speed, or the rate at which it rotates or revolves. The right-hand rule is a common way to specify the direction of angular velocity.

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