where are some places that cyber bullying occurs? Check all that apply

A in classrooms
B in text messages
C on playgrounds
D on websites
E on social media networks
F in chat rooms.
help im being timed 01:51:15​

Answer:

they would repel because they have the same charge. Charges that are different will stick together.

Answer: lot

Explanation: because you just climbed a mountain

Answer:

A) Gravity.

Explanation:

Earth is stuck in orbit around the sun, because of the Sun's gravitational pull. In this scenario, the string represents gravity, keeping the Earth attracted towards the sun.

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The student ties a string around a weight and swings the weight in a circle around her body. If the student represents the sun and the weight represents earth, the string will represent GRAVITY then.

In mechanics, gravity—also known as gravitation—is the constant force of attraction that pulls all things together. It has little impact on determining the intrinsic characteristics of common stuff because it is by far the weakest known force in nature.

In contrast, it governs the formations and evolution of stars, galaxies, and the entire cosmos by its extensive and ubiquitous action, which affects the trajectories of objects in the solar system and beyond the universe. All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.

As the student represents the sun and the weight represents earth, the string will represent GRAVITY then. Hence, option (A) is correct.

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The largest possible distance between speaker B and the observer at C is 1.37 m.

The largest possible distance between speaker B and the observer at C occurs when the difference in travel distances is just one half wavelength.

λ = v/f

λ = (343)/125

λ = 2.744

¹/₂λ = ¹/₂(2.744) = 1.37 m

Thus, the largest possible distance between speaker B and the observer at C is 1.37 m.

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According to the question the amount of work done in 10 seconds is 300 J.

Work is an activity undertaken by an individual or group that involves physical or mental effort in order to achieve a result or goal. It is often used to refer to paid employment, but it can also be used to refer to voluntary activities or activities undertaken for personal development. Work can be a source of satisfaction and self-fulfillment, providing individuals with a sense of purpose and identity. It can also be a source of stress and frustration, depending on the individual's ability to manage the demands of their job. Work can involve both physical and mental activities, and can be done either independently or collaboratively in teams. Work can also be divided into different categories, such as manual labor, professional work, and creative work.

The amount of work done is equal to the force applied multiplied by the distance the object moves. Since the force is constant and the speed is constant, the distance the box moves in 10 seconds is 10 x 3 = 30 m. Therefore, the amount of work done in 10 seconds is 10 N x 30 m = 300 J.

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Answer:

Batteries achieve the desired operating voltage by connecting several cells in series; each cell adds its voltage potential to derive at the total terminal voltage. Parallel connection attains higher capacity by adding up the total ampere-hour (Ah).

If an object is moving with a constant velocity, then by definition it has zero acceleration. So there is no net force acting on the object. The total work done on the object is thus 0 (that's not to say that there isn't work done by individual forces on the object, but the sum is 0 ).

Grief can be defined as a natural response to loss. Some of the most common states of grieving are denial, isolation, anger, depression, and acceptance.

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It is the product of the length and the linear charge density.

Linear charge density is defined as the amount of charge per unit length of the rod. Therefore, if we know the length of the rod and its linear charge density, we can easily calculate the amount of charge on that length of the rod by multiplying the two values.For example, if a rod is 2 meters long and has a linear charge density of 5 C/m, the amount of charge on the rod would be:Charge = Length x Linear Charge Density Charge = 2 m x 5 C/m Charge = 10 C .

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The correct answer is b. It is the product of the length and the linear charge density.

The amount of charge on a certain length of a rod that is uniformly charged can be determined by multiplying the length of the rod by its linear charge density. Linear charge density is defined as the amount of charge per unit length, and is expressed in units of Coulombs per meter (C/m). By multiplying the linear charge density by the length of the rod, we can determine the total amount of charge present on the rod. For example, if a rod has a linear charge density of 5 C/m and a length of 2 meters, the amount of charge on the rod would be 10 Coulombs (5 C/m x 2 m = 10 C). Therefore, option b is the correct answer as it describes the relationship between the charge and length of a uniformly charged rod.

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A supernova explosion of a star converts a small fraction of its mass into energy, while the majority of the star's mass is expelled as debris.

The ratio of mass destroyed to the original mass of the star is typically less than 1, with only a relatively small portion of the star's mass being transformed into energy.

The ratio of mass destroyed to the original mass of a star in a supernova explosion is typically less than 1.

During a supernova explosion, a massive star collapses and releases an enormous amount of energy. This energy is generated through various processes, including nuclear fusion and the release of gravitational potential energy. However, the overall mass of the star does not disappear completely.

Instead, a fraction of the star's mass is converted into energy, while the remaining mass is expelled into space as stellar debris. This expelled material can include heavy elements such as iron, which are synthesized in the intense conditions of the explosion.

The ratio of mass destroyed to the original mass of the star depends on several factors, including the initial mass of the star and the specific details of the supernova event. However, in general, the mass destroyed is relatively small compared to the original mass of the star.

For example, in a typical supernova event, it is estimated that only a few solar masses of material are actually converted into energy, while the majority of the star's mass is dispersed as debris. Therefore, the ratio of mass destroyed to the original mass of the star is typically much less than 1.

In summary, a supernova explosion of a star converts a small fraction of its mass into energy, while the majority of the star's mass is expelled as debris. The ratio of mass destroyed to the original mass of the star is typically less than 1, with only a relatively small portion of the star's mass being transformed into energy.

I hope this explanation helps! Let me know if you have any further questions.

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initial horizontal velocity = 35.0 / time . impact velocity = sqrt((initial horizontal velocity)^2 + (final velocity in the y-direction)^2)



To determine the initial horizontal velocity of the soccer ball, we can use the formula:
Horizontal distance = initial horizontal velocity * time
Since the soccer ball is kicked horizontally, the initial vertical velocity is zero, and the only force acting on the ball is gravity in the downward direction. Therefore, we can use the formula:

Vertical distance = (1/2) * gravity * time^2

Given that the height of the hill is 22.0 meters and the horizontal distance is 35.0 meters, we can use these values to find the time it takes for the ball to hit the ground.

Using the formula for vertical distance, we have:

22.0 = (1/2) * gravity * time^2

Simplifying this equation, we have:

gravity * time^2 = 44.0

Now, we can use the formula for horizontal distance to find the initial horizontal velocity. Rearranging the formula, we have:

initial horizontal velocity = horizontal distance / time

Substituting the given values, we have:

initial horizontal velocity = 35.0 / time

From the equation gravity * time^2 = 44.0, we can solve for time:

time = sqrt(44.0 / gravity)

Substituting this value back into the equation for initial horizontal velocity, we have:

initial horizontal velocity = 35.0 / sqrt(44.0 / gravity)

Simplifying this expression will give us the answer to part a).

To find the final velocity in the y-direction when the soccer ball hits the ground, we can use the formula:

final velocity = initial velocity + acceleration * time

In this case, the initial velocity is zero and the acceleration is due to gravity. Therefore, the final velocity in the y-direction when the soccer ball hits the ground is equal to the acceleration due to gravity multiplied by the time it takes to hit the ground.

Finally, to find the impact velocity of the soccer ball, we can use the Pythagorean theorem. The impact velocity is the resultant velocity of the soccer ball when it hits the ground, combining both the horizontal and vertical components.

Using the formula:

impact velocity = sqrt((initial horizontal velocity)^2 + (final velocity in the y-direction)^2)

Calculating these values will give us the answer to part c).

In conclusion, to determine the initial horizontal velocity of the soccer ball, we need to calculate the time it takes for the ball to hit the ground using the height of the hill.

Then, we can use the formula for horizontal distance to find the initial horizontal velocity. The final velocity in the y-direction when the soccer ball hits the ground can be found using the formula for final velocity.

Finally, the impact velocity is found using the Pythagorean theorem to combine the horizontal and vertical components of the velocity.

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Solar nebula flattening is a natural consequence of collisions between particles in a spinning cloud. therefore, option B is correct.

When a solar nebula collapses under its own gravity, it begins to spin due to the conservation of angular momentum. As the cloud spins, particles within it collide and interact. These collisions cause the cloud to flatten into a disk shape rather than remaining spherical.

Angular momentum plays a crucial role in this process. The initial slight asymmetry or irregularity in the nebula's shape leads to variations in the speeds and directions of the particles' motions. As particles collide and transfer momentum, their motion tends to align along the rotational axis of the cloud, promoting the formation of a flattened disk structure.

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Buoyant force on balloon =  rhoc * g * V

The magnitude of the buoyant force (Fb) on a balloon can be determined using Archimedes' principle. Archimedes' principle states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object.

The buoyant force (Fb) can be calculated using the following formula:

Fb = ρc * g * V

where:

ρc is the density of the fluid (in this case, air),

g is the acceleration due to gravity, and

V is the volume of the fluid displaced by the balloon.

In this case, the fluid is air, so the density of the fluid (ρc) can be approximated as the density of air at the given conditions.

Therefore, the magnitude of the buoyant force (Fb) on the balloon can be expressed as:

Fb = rhoc * g * V

where:

rhoc is the density of air,

g is the acceleration due to gravity, and

V is the volume of the balloon.

Note that the weight of the balloon itself is not considered in this calculation.

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No, you cannot take your phone in a tanning bed. Tanning beds use ultraviolet (UV) light to help people achieve a dark, even tan. However, this light can damage electronic devices, such as cell phones.

The heat generated by the bulbs and the strong UV radiation can damage the phone’s internal components and cause the phone to overheat. This can lead to short circuits and permanent damage to the phone.

In addition to the damage caused by UV light, the high temperatures of the tanning bed may cause the phone to overheat, leading to further damage, such as battery failure. Overheating may also cause the phone to shut down or restart unexpectedly, resulting in data loss and further damage.

Finally, taking your phone into a tanning bed may be a distraction. Tanning beds require the user to remain still and relaxed in order to achieve optimal results. Having your phone in the bed may disrupt this process and lead to a less effective tanning session.

For all of these reasons, it is not recommended to take your phone into a tanning bed. Doing so may cause irreparable damage to the device and may disrupt the tanning process.

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Answer:

Below

Explanation:

You can use this formula to find the time it will take the driver :

      finalvelocity = initialvelocity + acceleration (time)

Just plug in the values and rearrange :

     6.94 m/s = 0 m/s + 1.5m/s^2 (t)

     6.94 m/s = 1.5m/s^2 t

     4.6366 s = t

Therefore it takes the driver 4.6 seconds to accelerate to 25 km/h

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Answer:

True

Explanation:

Velocity is a vector quantity, which means that it carries both magnitude and direction. Hence when direction of a particle changes, although magnitude (speed) may remain same, it's velocity changes due to direction change. For ex. A particle is m... A particle is moving along x axis with speed 1m/s, it's velocity will be represented as 1i (i represents unit vector along x)

But if it now starts moving along y axis, it's velocity is 1j (j represents unit vector along y axis). Hence velocity changes with direction.

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Charge on third sphere is 5.1MC after making a contact with the other two metallic conducting spheres.

Specifically, in the event that a metal sphere is charged, since charge can stream unreservedly through a metal, the self-shock of charges will bring about all the charge living on the outer layer of the sphere, which then, at that point, acts as an empty circular accuse dispersion of zero electric field inside.

From the given data, Q1 and Q2 are brought into contact as they are both conductors,  as such there will be evenly distribution of charges.

Firstly,charge on each sphere(Q) = Q1 + Q2 / 2

                               = +7.8 MC + (- 1.4 MC) / 2

                              =>+7.8 MC +  (-0.7)MC = 7.1MC

Now, one of those two spheres is brought into contact with the third sphere ; Q is brought into contact with Q4 = Q + Q3 / 2

                                                                 = 7.1MC - 4 MC /2

                                                                  =7.1MC -2MC

                                                                  = 5.1 MC

Hence,5.1MC is the final charge on the third sphere.

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(Complete question) is:

Three identical metallic conducting spheres carry the following charges: Q1 = +7.8 MC, Q2 = −1.4 MC, and Q3 = −4,0 MC. The spheres that carry the charges Q1 and Q2 are brought into contact. Then they are separated. After that, one of those two spheres is brought into contact with the third sphere that carries the charge Q3. What is the final charge on the third sphere?

From Jim's perspective riding on the truck, the motion of the box will be influenced by any external forces acting on it, such as forces from the truck or other sources. The box will exhibit the same motion as the truck unless acted upon by external forces, in accordance with Newton's laws of motion.

If Jim is riding on the truck and observing the motion of the box, analyze the motion in terms of Newton's laws of motion.

Newton's First Law states that an object will remain at rest or continue to move at a constant velocity in a straight line unless acted upon by an external force.

From Jim's perspective, if the truck is moving at a constant velocity in a straight line, he would observe the box to also remain at rest or move with the same constant velocity in a straight line, assuming there are no external forces acting on the box. This is because, relative to Jim, the box and the truck are in the same inertial frame of reference and experience the same motion.

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

If Jim observes the box accelerating or decelerating, he would conclude that there is a net force acting on the box. This force could be due to the truck accelerating or decelerating, or due to any external forces acting on the box, such as friction with the truck bed or an applied force.

Newton's Third Law states that for every action, there is an equal and opposite reaction.

If Jim observes an external force acting on the box, he would expect to see an equal and opposite reaction force acting on the truck. For example, if Jim sees the box being pushed forward, he would expect to observe a backward force acting on the truck due to the interaction between the box and the truck.

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Answer:

When you are exercising, both your breating and heart rate go up, and it’s the opposite for sleep, when you sleep, your body slows down to rest itself.

Answer:

Explavyvyvuvubuvuvuvctcycuvrzedtcyvvy

Haha you did that to me it’s only fair

Answer:

0.6 pound.

Explanation:

From the question given above:

Julie applies 2.67 Newton (N) of force down onto the table.

Hence, we can obtain the force in pound applied by Julie on the table as follow:

Recall:

1 N = 0.225 pound

Therefore,

2.67 N = 2.67 × 0.225

2.67 N = 0.6 pound

Therefore, the force in pound applied by Julie on the table is 0.6 pound

Answer:

Explanation:

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The angle is 21.0°.

When two straight lines or rays intersect at a single endpoint, an angle is created. The vertex of an angle is the location where two points come together.

Given:

R = 225m

\(m_{c}\) = 1125kg,​

\(m_{t}\)=2250kg

​v = 65mph = 29.1m/s

g = 9.8 m/s²

It is necessary to use the formula below in order to correctly manipulate these numbers:

\(a_{rad}\) = v²/R

a) \(\sum F_{x} =nsin\theta = ma_{rad}\)

\(\sum F_{y} = ncos\theta+ (-mg) =0\)

The centripetal acceleration, a rad = dfracv2, and the horizontal component of the normal force are both present in the acceleration in the x-direction. \(a_{rad}\) =v²/R. Since there should be no acceleration in the y-direction (i.e., no slipping off the road), the y-component is set to zero. The acceleration in the y-direction is the result of adding the vertical component of the normal force with the acceleration caused by gravity.

solving \(\sum F_{y}\) for n yields n = mg/cosθ

Substituting this into \(\sum F_{x}\) using \(a_{rad}\) = v²/R

yields mg/cosθ ×sinθ = mv²/R

solving for θ yields tanθ = v²/gR (or) θ = \(a_{rad}\) v²/gR

As a result, the angle solely depends on the curve's radius and speed. The results are obtained by incorporating those values with the gravitational acceleration constant.

\(a_{rad}\) (29.1)²/22.5×9.8 = \(a_{rad}\) (0.384) = 21.0°.

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Answer:

True

Explanation:

Answer:

9 ohms

Explanation:

P = V²/R

R = v²/p = 6²/4 = 36/4 = 9 ohms.

The resistance is 9 Ohm.

To find the resistance, we need to know about the power in term of resistance and voltage.

Thus, we can conclude that the resistance is 9 Ohm.

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The sun is an example of nuclear energy being converted into heat and light energy.

Nuclear energy is the term for the energy present in an atom's nucleus, or core. Electricity can be produced using nuclear energy, but it first needs to be released from the atom.

The energy that exists in the center of an atom is known as nuclear energy. The bonds that hold the nucleus together in the core contain a lot of energy.

Nuclear fusion occurs in the sun when two or more atoms join together to form a bigger atom, releasing a tremendous amount of energy in the process.

²₁H+³₁H →⁴₂He+¹₀n+energy

Chemical energy that is locked away in chemical bonds is transformed into heat and light energy by rocket engines and coal-burning power plants. In volcanoes, mechanical energy is transformed into sound energy and the heat energy of the lava is transformed into light energy.

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In order to calculate a planet's orbital period, we must know the dimensions of its orbit. The correct answer is C.

To calculate a planet's orbital period, we need to know the dimensions of its orbit, specifically the semi-major axis. The semi-major axis is the average distance between the planet and its parent star (assuming a circular or nearly circular orbit). The orbital period of a planet is determined by its distance from the star and the mass of the star.

The tilt of the planet's axis (option A) affects the planet's seasons but does not directly impact its orbital period. The radius of the planet (option B) is not directly related to its orbital period either. The velocity of the planet (option D) can vary along its orbit, but it is not sufficient on its own to calculate the orbital period. Hence the correct answer is C.

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As of my knowledge cutoff in September 2021, there is no current or planned space observatory specifically dedicated to observing electromagnetic radiation in the mid-infrared range, roughly from 5 to 20 micrometers (μm) in wavelength. This range is often referred to as the "thermal infrared" as it corresponds to the thermal radiation emitted by objects at room temperature or higher.

While space observatories like the Spitzer Space Telescope have made significant contributions to mid-infrared astronomy, their missions have either ended or are focused on other wavelength ranges. The James Webb Space Telescope (JWST), set to launch in late 2021, will have some capability in the mid-infrared range but will primarily operate in the near-infrared.

However, it's worth noting that the field of mid-infrared astronomy is not neglected. Ground-based observatories and instruments, such as those equipped with adaptive optics or interferometry, continue to advance our understanding of the mid-infrared universe. Additionally, future mission concepts and technology developments may lead to dedicated space observatories for the mid-infrared range.

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