The _________ waves' motion is similar to S waves, except it is from side-to-side in a horizontal plane roughly parallel to Earth's surface

Initial velocity = 0 m/s

Displacement = 5 m

Acceleration = 10cos25° = 9.06 m/s^2

time = ? (To be calculated)

Using, S = ut + at^2/2, we have

5 = 0(t)+9.06t^2/2

10/9.06 = t^2

t = 1.006 seconds

Answer:

Frequency – The frequency of a wave is the number of waves that pass a given point in a certain amount of time. Frequency is measured in units called hertz (Hz), and is defined as the number of waves per second. A wave that occurs every second has a frequency of 1 wave per second (1/s) or 1 Hz.

The work required is Wa = 2954112 J

Given:

swimming pool diameter = 14 m

length of sides = 4 m

height of water = 3 m

To Find:

work required to pump water

Solution: The radius of the swimming pool is

r = 14/2 = 7 m

The work is mathematically given as

W = Force x distance

Now force is mathematically given as

F = density x area x height of pool = p*(πr²)dx

Now the work done to pump all of the water over the side

W = ∫p*(πr²)(H-x)dx = ∫1000*9.81*(π*7^2)(4-x)dx

W = 64000*9.8π∫(4-x) dx = 64000*9.8π{4(3) - 3/2}

W = 2954112 J

So, work required is Wa = 2954112 J

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Answer:

During a thunderstorm, lightning is seen first and thunder is heard later on because light travels faster than sound. If you see a lightning flash but cannot hear any thunder, the thunderstorm is most likely be quite far away from you.

Answer:

just add co-ratios and then find the average.

Explanation:

The magnitude of the net electric field at the origin due to the given distribution of charge is E_net = 4kQ/πR².

Given:

A semi-circle distribution with radius 'r'

Charges '+Q' and '-Q'

Calculation of net electric field:

Step 1:

The electric field for a charge is given as:

E = (kλ/R) i + (kλ/R) j         - ( 1 )

where, k is Coulomb's force constant

            λ is charge density

            R is separation distance between the charges

            i & j are unit vectors for x-axis and y-axis respectively

Step 2:

The electric field due to charge +Q is given as:

E₁ = (kλ/R) i - (kλ/R) j      - ( 2 )  

The electric field due to charge -Q is given as:

E₂ = (kλ/R) i + (kλ/R) j     - ( 3 )

Step 3:

Thus, the net electric field will be given as:

E_net = E₁ + E₂

Applying values in above equation, we get:

E_net = (kλ/R) i -(kλ/R) j + (kλ/R) i + (kλ/R) j

          =( kλ/R) [ i - j + i + j ]

          = 2i (kλ/R)                                     -( 4 )

Step 4:

Now, we know that the linear charge density is given as:

λ = Charge/length

   = Q/(πR/2)

   = 2Q/πR

Applying the value in equation 4, we get:

E_net = 2i (k(2Q/πR)/R)

          = 4i (kQ/πR²)

          = 4kQ/πR²

Therefore, the net electric field due to the given charge distribution is of magnitude 4kQ/πR² directed along the positive x-axis.

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The statement " If water is heated, then it will turn to steam" is an example of a conclusion, therefore the correct answer is option B .

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds .

A method of learning about the world is science .

Thus, the statement " If water is heated, then it will turn to steam" is an example of a conclusion, therefore the correct answer is option B .

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Answer:

\(F=9.06*10^{-8} N\)

Explanation:

We can use the Coulomb force

\(F=k\frac{q_{e}q_{p}}{r^{2}}\)

\(F=9*10^{9}\frac{|-(1.6*10^{-19})^{2}|}{(5.29*10^{11})^{2}}\)

\(F=9.06*10^{-8} N\)

The direction of the force is toward proton with respect to the electron reference coordinate and is in the direction of the electron in the proton system reference.

I hope it helps you!

Continuous signals are characterized as analog signals that are broken up into binary code are characterized as digital.

An am/fm radio is a good example of analog technology. A smart phone is a good example of digital technology.

These are devices that generate, store or process data while analog is a continuous signal that represents physical measurements.

The examples of analog and digital technology are mentioned above and is the most appropriate choice.

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Answer:

Analog, Digital, Analog, Digital

Explanation:

edge 2022

The gravitational force between a 4kg and a 6kg mass separated by  a distance  of 3 m is  1.185 × 10^-9 N.

The gravitational force between  two masses can be calculated using the formula: F = G * (m1 * m2) / r^2, where F is the  gravitational force, G is the gravitational constant (6.67430 × 10^-11 N·m^2/kg^2), m1 and m2 are the masses of the objects and r is the distance between their centers of mass.

In this case, m1 =4kg, m2= 6 kg and r is the 3 m. plugging  these values into the formula  above mentioned we get:

F = (6.67430 × 10^-11 N·m^2/kg^2) * (4 kg * 6 kg) / (3 m)^2= 1.185 × 10^-9 N

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The closest in size (radius) to a white dwarf is option A) the Earth.

A white dwarf is a stellar remnant, typically having a radius similar to that of Earth. While they vary in size, white dwarfs are generally much smaller than the Sun, and larger than a small city, football stadium, or basketball.

White dwarfs are the final evolutionary stage of low-to-intermediate-mass stars, formed when these stars exhaust their nuclear fuel and shed their outer layers. Although their size is similar to Earth, their mass is typically close to that of the Sun, making them incredibly dense objects. It is important to note that the comparison in size is not an exact match, as white dwarfs can differ in size depending on factors such as their mass and temperature, but on average, they are closest in size to Earth among the options provided.

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Answer:

V = I * R        voltage drop

P = I * V = I^2 * R        power

I = P / V = 327 / 15 = 21.8 amps

b)   I = 21.8 amps

a) R = P / I^2 = 327 / 21.8^2 = .69 ohms

Check:

V = I R = 21.8 * .69 = 15 Volts

Objects in the solar system that do not have sufficient momentum to maintain a stable orbit around the Sun may experience one of several possible outcomes, depending on their size and location.

Collision with the Sun: If the object is close enough to the Sun, it may eventually fall into it, due to the Sun's gravity pulling it towards its center. This is the fate of many comets and asteroids that enter the inner solar system.

Ejection from the solar system: Another possibility is that the object may be ejected from the solar system altogether, if it interacts with a planet or other large object in such a way as to gain enough energy to escape the Sun's gravity. This is more likely to happen with smaller objects like comets, which are easily perturbed by the gravity of larger bodies.

Collision with another object: If the object is in the asteroid belt or the Kuiper belt, it may collide with another object in the region, due to the large number of bodies orbiting in those regions. This can result in the destruction of both objects, or the formation of a new, larger object from the debris.

Capture by a planet or moon: In some cases, the object may be captured by the gravity of a planet or moon, and become a satellite orbiting that body instead of the Sun. This is how many of the moons in the solar system are thought to have formed.

Overall, the fate of an object that lacks sufficient momentum to maintain a stable orbit around the Sun depends on a variety of factors, including its size, location, and interactions with other objects in the solar system.

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The ball will travel more distance when projected or kicked at an angle of 35 degrees.

The range of the projectile or the horizontal distance traveled by the ball is calculated by applying the following kinematic equation as shown below.

R = ( u² sin (2θ ) ) / g

where;

The horizontal distance traveled by the ball when projected at 35 degrees is calculated as;

R = ( 13.9² x sin ( 2 x 35 ) ) / ( 9.8 )

R = 18.53 m

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Answer:

one for physical is that your muscles will seize up or cramp when you try to move. one for mental is that if your always sitting down you will most likely become stressed or get depression

Explanation

the reason your muscles cramp is from lack of exercise form sitting they get used to that position and want to stay that way. then theres the deprestion ive had it it aint fun nor is stress ive had that too

True. Checking the weights of a sample of bottles to decide if a process that fills bottles with soda is functioning properly is an example of inferential statistics.

Inferential statistics is a branch of statistics that involves using a sample of data to make inferences or conclusions about a larger population. In this case, the sample of bottles is used to make inferences about the entire process of filling bottles with soda, with the goal of determining if the process is functioning properly. This type of statistical analysis is used to make informed decisions and predictions about a population based on limited information, making it an important tool in many industries and fields.

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Answer:

oxygen and carbon dioxide

Explanation:

are soluble in water animal and plants can utilize these dissolved gases for resporation and photosynthesis and hence can survived in water

The carbon cycle and the water cycle are different in terms of the substances they involve and the processes they encompass.

The carbon cycle involves the movement of carbon atoms between the atmosphere, living organisms, and the Earth's crust through processes such as photosynthesis, respiration, and fossil fuel combustion. On the other hand, the water cycle, also known as the hydrological cycle, involves the continuous movement of water through evaporation, condensation, precipitation, and runoff, without any change in the composition of water molecules.

While both cycles are essential for maintaining Earth's systems, they differ in terms of the substances involved and the specific processes that occur. The carbon cycle focuses on the cycling of carbon atoms, influencing global climate and long-term carbon storage, whereas the water cycle revolves around the movement of water, ensuring the availability of freshwater resources and sustaining life on the planet. Understanding these cycles helps us comprehend the interconnectedness of natural processes and their impact on the environment.

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When a light ray is hit into a flat mirror the angle of incidence is equal to angle of reflection. But if the mirror is curved, this relation is not satisfied and the angle of reflection changes.

When a light ray is hot on a mirror a line that is perpendicular to the mirror's surface can be drawn at the point of incidence where the ray contacts the mirror.

A typical line is what this line is. The angle formed by the incident and reflected rays is split into two equal angles by the normal line. The angle of incidence is the angle formed by the incident beam and the normal. The angle of reflection is the angle formed by the reflected beam and the normal.

According to the law of reflection, the angle of incidence and the angle of reflection are identical whenever a light beam reflects off a surface. However, for a curved mirror these two angles will be different.

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Answer: C. Trial 3

Explanation:

Trial 1 and 2 equal 1.5, Trial 3 equals 1 and Trial 4 equals 3. Trial 3 is the smallest current .

The trial for which the students would measure the smallest current is the circuit is trial 2 and trial 3.

To know the trial which generates the smallest current, we need to determine the current in each trial.

Since current I = V/R where V = voltage and R = resistance.

For trial 1, V = 1.5 V and R = 200 Ω

So, I = 1.5 V/200 Ω

= 0.0075 A

= 7.5 mA

For trial 2, V = 1.5 V and R = 100 Ω

So, I = 1.5 V/100 Ω

= 0.015 A

= 15 mA

For trial 3, V = 3 V and R = 200 Ω

So, I = 3 V/200 Ω

= 0.015 A

= 15 mA

For trial 4, V = 3 V and R = 100 Ω

So, I = 3 V/100 Ω

= 0.03 A

= 3 mA

Trial 2 and trial 3 both produce a the smallest current of 15 mA.

So, the trial for which the students would measure the smallest current is the circuit is trial 2 and trial 3.

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Kepler's 2nd law states that a line connecting the planets will sweeps equal areas of space in equal time intervals.

The imaginary line joining a planet and the Sun sweeps equal areas of space in equal time intervals as the planet orbits.

Basically ,that the planets do not move with the constant speed along their orbits.

Rather, their speed varies so that the line joining the centers of the Sun and planets sweeps out equal areas of space in equal time.

The point of nearest approach of the planet to the Sun is termed as the perihelion and the point of greatest separation is aphelion.

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Answer:

The boiling point on top of a mountain would be lower than at sea level because the altitude would be higher and air pressure would decrease.

As the height increases, because most of the air molecules are held near to the surface and hence pressure by gaseous substance will be lower at higher altitudes results in lowering boiling point also.

Boiling point of a substance is the temperature at which the substance changes from the liquid state to vapor state where both  phases are in equilibrium and the pressure of vapor phase above the liquid phase will be equal to the atmospheric pressure.

The boiling point is dependent on the bond type, molecular weight, temperature and pressure. At higher altitudes, the pressure will be reduced due to the less denser air.

The volume of gas molecules is higher on elevation and thus, a decreased pressure causes, the water molecules easily boil with weekend intermolecular force thus, boiling point at mountain will be less than that at sea level.

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Answer:

can be used to generate a magnetic effect ( magnetic field ) or magnetism can be generated by electricity , There is a relation between magnetism and electricity , where electric current has a magnetic effect , while  magnet generates an electric current .The electromagnet is used in factories to move ( lift ) the heavy iron blocks as it is used for making big-sized winch ( crane ) .The electromagnet is used in making many appliances ( devices ) as the electric bell , the electric mixer , the disc drive and the television .The electromagnet is used in factories to move ( lift ) the heavy iron blocks as it is used for making big-sized winch ( crane ) .The electromagnet is used in making many appliances ( devices ) as the electric bell , the electric mixer , the disc drive and the television .

Explanation:

The cause of the aurora borealis (the northern lights) is the Earth's magnetic field guides trapped charged particles to follow field lines toward the poles, where they collide with the atmosphere, causing a glow. Option d.

The other options: As the Earth moves through the solar magnetic field, a voltage is built up between the south and north magnetic poles; This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow; The northern lights are reflections of fluorescent lights from large cities off clouds in the arctic. Electrons in the Van Allen radiation belts flip over their spin direction and emit light are all incorrect. Therefore the correct answer is option d.

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Correct statement is b. This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow.

The cause of the aurora borealis, or the northern lights, is primarily described by option b. When the Earth moves through the solar magnetic field, it creates a voltage between the south and north magnetic poles.

This voltage accelerates charged particles, mainly electrons, in the Earth's magnetosphere. These accelerated particles then collide with atoms and molecules in the Earth's upper atmosphere, resulting in the emission of light. The glowing phenomenon of the northern lights is a direct consequence of these collisions.

The colors observed in the aurora are determined by the type of gas particles present in the atmosphere and the altitude at which the collisions occur. Hence correct statement is b. This voltage accelerates charged particles to collide with both poles, thus causing the atmosphere to glow.

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The 4th state of matter would make an acceptable force field.

The 4th state of matter which is plasma would make an acceptable force field because this fourth state of matter is present in ionized form which has two charges on it i.e. cation which is a positive charge and anion which is a negative charge.

We know that charges attract as well repel other objects if they are strong enough. Positive charge repel positive charge but attract negative charge so we can conclude that 4th state of matter would make an acceptable force field.

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Answer: The Doppler effect occurs when a source of a wave is moving relative to an observer (or the observer is moving relative to the source). In this case, the apparent frequency of the sound, as heard/seen by the observer, is shifted with respect to the original frequency of the wave.

More specifically, the relationship between the apparent frequency, f', and the original frequency, f, is given by:

where:

is the velocity of the wave

is the velocity of the observer relative to the source, and it is positive if the observer is moving towards the source, and negative if the observer is moving away from the source

is the velocity of the source relative to the observer, and it is positive if the source is moving away from the observer, and negative if the source is moving towards the observer

The doppler effect occurs in many daily-life situations: for instance, when an ambulance approaches you, you hear an increase in the apparent frequency of the siren due to the Doppler effect. Another example is the movements of distant galaxies from us: when they move away from us, the apparent frequency of the light they emit decreases, so their wavelengths appear to increase towards the red color (red-shift); on the contrary, when they are moving towards us, the apparent frequency seems to increase, so the wavelength seems to decrease towards the blue color (blue-shift).

Explanation:

If the echo from one wall is heard in 2.0 sec and the echo from the other wall is heard 2 sec later then the width of the valley is 3d/s

Let's call the distance from the rifle to one of the walls "d". Since the sound wave travels twice the distance to the wall and back, the total distance the sound travels before reaching the listener is 2d. Similarly, the distance from the rifle to the other wall is also "d", so the total distance the sound travels before reaching the listener from that wall is 2d as well.

Let's call the width of the valley "w". When the sound bounces off the walls, it has to travel an additional distance of "w" to reach the listener. Since sound travels at a constant speed (assuming no temperature variation), we can use the following formula to find the speed of sound:

v = d / t

where v is the speed of sound, d is the distance traveled by the sound, and t is the time it takes for the sound to travel that distance.

Using this formula, we can find the speed of sound for both echoes:

v1 = 2d / 2s = d / s

v2 = 2d / 2s = d / s

Since the time delay between the two echoes is 2 seconds, the total distance the sound traveled to reach the listener is twice the width of the valley:

2w = v2 (4s) - v1 (2s)

Simplifying the equation, we get:

2w = 2d / s (4s) - d / s (2s)

2w = 6d / s

w = 3d / s

Therefore, the width of the valley is 3d/s. We can't solve for "d" or "s" without additional information, but we can say that the width of the valley is proportional to the distance from the rifle to the wall and inversely proportional to the speed of sound.

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