An electron is at a distance of 0.40 m from a fixed point charge of –6.0 mC. Calculate the electric field strength due to the point charge at the position of the electron The answer is 3.4 × 108 N C–1. How do we achieve the answer?

Answer:

448 meters

Explanation:

every second it moves 8 meters, so all you have to do is multiply 56x8 or 8x56 either way it is the same thing and you will get the same answer

The ball would have covered a distance of 448 m in 56 seconds.

We know the following;

Velocity of the ball = 8 m/s

time taken = 56 seconds

Also;

velocity = distance (m)/ time(s)

We now have to substitute the values into the equation hence;

8 m/s = distance/ 56 seconds

Distance = 8 m/s ×  56 seconds

Distance = 448 m

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Answer:

first one is  series second one is paralle

Explanation:

When an unstoppable force meets an immovable object, it creates an intriguing paradox. An unstoppable force refers to an object that has an enormous amount of power, and it cannot be stopped. In contrast, an immovable object refers to an object that cannot be moved, no matter how much force is applied to it. This essay aims to explore this paradox in detail.

The phrase “when an unstoppable force meets an immovable object” is used to represent a situation where two parties with equal power and determination meet. It also symbolizes a conflict that cannot be resolved through compromise, and it raises the question of what happens when two opposing forces collide.

There are different interpretations of the phrase, but one common interpretation is that it is a paradox that is impossible to resolve logically. Logically, an unstoppable force cannot coexist with an immovable object. It raises the question of what happens when two opposing forces collide. In reality, such a scenario is impossible. This is because an unstoppable force cannot exist in the same space as an immovable object.

The phrase can also be interpreted metaphorically, representing a situation where two opposing beliefs or ideologies clash. When two people with different opinions meet, they often try to convince each other that they are right. However, if the two people hold beliefs that are diametrically opposed to each other, they may find themselves in a situation where neither of them is willing to compromise.

In conclusion, when an unstoppable force meets an immovable object, it creates a paradox that is impossible to resolve logically. It raises the question of what happens when two opposing forces collide. While the phrase is often used metaphorically to represent a clash of ideologies, it is important to note that such a situation is unlikely to happen in reality. This paradox serves as a reminder that there are some conflicts that cannot be resolved through compromise.

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The net electrostatic force acting on the charged particle q₂ is 28.7 N.

Charge on the first particle, q₁ = 8 μC

Charge on the second particle, q₂ = 3.5 μC

Charge on the third particle, q₃ = - 2.5 μC

Distance between the charges q₁ and q₂, r₁ = 0.1 m

Distance between the charges, q₂ and q₃, r₂ = 0.15 m

Electrostatic force exerted on the charged particle q₂ and q₁,

F₁ = 1/4πε₀ (q₁q₂/r₁²)

F₁ = 9 x 10⁹ x (8 x 10⁻⁶ x 3.5 x 10⁻⁶)/(0.1)²

F₁ = 25.2 N

Electrostatic force exerted on the charged particle q₂ by q₃,

F₂ = 1/4πε₀ (q₂q₃/r₂²)

F₂ = 9 x 10⁹ x (3.5 x 10⁻⁶x -2.5 x 10⁻⁶)/(0.15)²

F₂ = -78.75 x 10⁻³/22.5 x 10⁻³

F₂ = -3.5 N

The net electrostatic force acting on the charged particle q₂ is,

F = F₁ - F₂

F = 25.2 - -3.5

F = 25.2 + 3.5

F = 28.7 N

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(a) The magnetic field at a distance r from an infinitely-long straight wire carrying current i is given by B = μ_0i / (2πr). (b) The magnitude of the magnetic field at the point halfway between the wires is 2×10^-6 T and it is directed upwards.

(a) We can use Ampere's law to derive an expression for the magnetic field a distance r from an infinitely-long straight wire carrying current i. Consider a circular loop of radius r centered on the wire. The magnetic field at every point on the loop is tangent to the loop and has a magnitude B. By Ampere's law,

∮B·dl = μ_0i,

where the integral is taken over the circumference of the loop, and μ_0 is the permeability of free space. Since B is constant in magnitude and direction along the loop, we can simplify the integral to

B∮dl = μ_0i,

where the integral is just the circumference of the loop, 2πr. Thus, we have

B(2πr) = μ_0i,

or

B = μ_0i / (2πr).

Therefore, the magnetic field at a distance r from an infinitely-long straight wire carrying current i is given by B = μ_0i / (2πr).

(b) The magnetic field at a point halfway between the wires can be found by applying the right-hand rule. If we curl the fingers of our right hand in the direction of the current in the left wire (into the paper), and then point the thumb in the direction of the current in the right wire (also into the paper), the magnetic field will be perpendicular to the plane of the fingers and directed upwards. Since the wires are located 0.5 m apart, the distance from the point to each wire is also 0.5 m. Thus, using the expression derived in part (a), we have

B = μ_0i_1 / (2πr_1) + μ_0i_2 / (2πr_2) = (4π×10^-7 T·m/A)(5 A) / (2π×0.5 m) + (4π×10^-7 T·m/A)(2 A) / (2π×0.5 m) = 2×10^-6 T.

Therefore, the magnitude of the magnetic field at the point halfway between the wires is 2×10^-6 T and it is directed upwards.

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According to the space environment tracking website SpaceWeather, scientists have accounted for approximately 9,000 potentially hazardous near-Earth or Earth-crossing asteroids. This number is subject to change as new discoveries are made and existing data is updated.

As of September 2021, the Center for Near Earth Object Studies (CNEOS) at NASA had identified and tracked more than 25,000 near-Earth objects (NEOs), including over 9,000 classified as potentially hazardous asteroids (PHAs). It's important to note that not all PHAs are guaranteed to impact the Earth, and scientists continuously monitor these objects to refine their orbital calculations and assess potential impact risks.

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Hi there!

We can use Newton's Second Law to solve:

\(\large\boxed{\Sigma F = ma}}\)

∑F = Net force (N)

m = mass (kg)

a = acceleration (m/s²)

Rearrange the equation to solve for acceleration:

\(\large\boxed{a = \frac{F}{m}}\)

Plug in the values given to solve for the magnitude of the force.

\(a = \frac{95.4}{16} = \boxed{5.96 m/s^2 \text{ To the left}}\)

**However, if we want to assign the left direction to be NEGATIVE, then the acceleration of the cart due to a leftward net force would be -5.96 m/s².

how am I supposed to know

The mass of lead = 22,939 kg

Given

mass alcohol=1600 kg

The density of lead =11300kg\m³ and density of alcohol=790kg\m³

Required

mass of lead

Solution

\(\tt V=\dfrac{mass}{\rho}\\\\V=\dfrac{1600}{790}\\\\V=2.03~m^3\)

the volume of lead=volume of alcohol=2.03 m, so the mass of lead :

\(\tt m=\rho\times V\\\\m=11300\times 2.03\\\\m=22,939~kg\)

Answer:

People think they ruin landscapes.

Explanation:

This is a common opinion and will be accepted as a point in any essay.

Answer:

The circumference of a circle is the distance around it (linear) while a period is the completion of a cycle or the length from one peak to the next of a periodic function

Explanation:

Circumference is the distance around a circle while period is the time taken for one revolution around the circle.

This is a round plane figure whose points are equidistant from a fixed point. The circumference is total distance round the circle.

On the other hand, period refers to the time taken for one revolution around the circle.

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Answer:

A: 2.8 * 10^(-14) J

Explanation:

Formula to find the energy is;

E = hc/λ

Where;

E is energy of a photon (E)

λ is wavelength of the light

c is speed of light

Thus;

E = (1.99 *10^(-25))/(7 * 10^(-12))

E = 2.8 * 10^(-14) J

A cyclist starts pedalling his bicycle from rest and achieves an angular speed of 5 revolutions in 8 seconds. Afterwards, he stops pedalling and lets the bicycle move slowly before coming to a complete stop in 12 seconds. The wheels complete approximately 8.75 revolutions in total during the entire motion.

To determine the total number of revolutions of the wheels, we need to consider both periods: acceleration and deceleration.
During the acceleration phase (0 to 8 seconds), the cyclist completes 5 revolutions. Now we need to calculate the number of revolutions during the deceleration phase (8 to 20 seconds).
Assuming uniform deceleration, the angular speed decreases linearly from 5 revolutions in 8 seconds to 0 revolutions in 12 seconds. The average angular speed during the deceleration phase can be calculated as (5 + 0) / 2 = 2.5 revolutions per 8 seconds.
Now, to find the number of revolutions in the 12-second deceleration period, we can use the proportion:
2.5 revolutions / 8 seconds = x revolutions / 12 seconds
Solving for x, we get:
x = (2.5 * 12) / 8 = 3.75 revolutions
Adding the revolutions during both phases, we get the total number of revolutions of the wheels:
5 revolutions (acceleration) + 3.75 revolutions (deceleration) = 8.75 revolutions

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Answer: 1 m/s

Explanation: 1 km = 1000 m (1 kilometer is equal to 1000 meters)

1 hour = 3600 seconds (1 hour is equal to 3600 seconds)

Answer:

The oldest rock being found at the highest elevation is primarily due to the geological process of mountain building or tectonic uplift.

During mountain building, tectonic plates collide, causing the land to uplift and fold. This process can bring older rock layers closer to the surface, or even expose them at the highest elevations. As the land is pushed upward, erosion occurs, causing the overlying layers to be removed, and the older rock layers to be exposed at the surface.

The physical characteristics of the bedrock that enable it to remain at the highest elevation during this process are its strength and resistance to erosion. The older rock layers are typically made up of harder and more resistant rock types, such as granite or metamorphic rocks, that are more resistant to weathering and erosion compared to younger sedimentary rocks.

As a result, the older and more resistant rock layers are able to withstand the effects of erosion and remain at the highest elevation. This is why the highest peaks of mountain ranges, such as the Himalayas or the Rocky Mountains, often consist of the oldest rock formations.

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 law of conservation of momentum states that the momentum of a system is equal and conserved before and after collision. Therefore, the final momentum of the system is 513 kgm/s.

The law of conservation of momentum states that, for two or more bodies which are present in an isolated system that are acting upon each other, their total momentum remains constant in the system unless an external force is applied on them. The expression for conservation of momentum is:

m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂

where, m₁ = mass of one object,

m₂ = mass of another object,

u₁ and u₂ are the initial velocities of objects,

v₁ and v₂ are the final velocities of objects.

Here, m₁ = 95kg, m₂ = 120kg

u₁ = 5.4m/s, u₂ = 0m/s (at rest)

m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂

95 × 5.4 + 120 × 0 = 95 × v₁ + 120 × v₂

513 + 0 = 95 × v₁ + 120 × v₂

Momentum before collision = Momentum after collision

Therefore, the momentum after collision is 513 kgm/s.

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Answer:

120N

Explanation:

The question gives us Mg = 200 N and in this equation Mg is equal to the normal force. Kinetic friction is calculated by normal force * coefficient of kinetic friction. Therefore kinetic friction = 200N * 0.6 = 120N

Answer:the same

Explanation:their moving at the same speed and collapse

According to Newton's law, the force exerted by the bug and car is equal and opposite. Thus their acceleration decreases as mass increases. Therefore the acceleration of bug will be greater than that of the car.

Acceleration, in physics is the rate of change in velocity. Thus it has the unit m/s². Newton's second law of motion states that the force acting on a moving body is the product of its mass and acceleration.

Hence F=  m a indicates that the acceleration is in inverse proportionality with the mass. Thus a body with greater mass will have smaller acceleration but greater force.

According to third  law of motion, an action have an equal opposite reaction. Thus the force exerted by the bug on the car and the force exerted by the car on bug are equal and opposite where, the bug will have greater acceleration due to its less mass.

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Option D: John will express his brightness unit in candela.

Power, or the rate at which energy is utilized or produced over time, is measured in watts. Energy providers utilize watts to calculate the amount of electricity we use in Kilowatts per Hour (kWh), which is equivalent to 1,000 watts used for one hour.

A fundamental unit of measurement for the amount of visible light that a light source emits is called a lumen (lm), also known as luminous flux.

Simply put, to assess the power of a lamp inside a lighting fixture, look for the total number of Lumens.

In addition to the light itself, a number of other elements must be considered when estimating the amount of light that is emitted. Most lamps are housed in a light fixture that is composed of diffusers and reflectors, among other parts.

These variables, along with others like the shape and number of lights, will affect the luminaire’s brightness and light dispersion.

Luminaire efficacy considers these factors to give a more accurate estimation of the lumens generated by the entire luminaire once it is fully constructed.

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A piece of steel sinks in water because steel is denser than water. However, a steel ship is a hollow object made of steel and contains a lot of air in it. Due to presence of a lot of air in it, the average density of the ship becomes less than the density of water. Hence a ship floats in water.

Answer:

Cause its a steel block

Explanation:

thats like putting a brick in the water and expecting it to float

The color change from colorless liquids to a yellow solid in the chemical reaction occurred likely due to the formation of a new compound with specific electronic structures or absorption properties.

The color change from colorless liquids to a yellow solid in a chemical reaction can be attributed to the formation of a new compound with different electronic structures and absorption properties. Some possible reasons for this color change could include:

1. Formation of a colored compound: The reaction may result in the formation of a compound that absorbs certain wavelengths of light, giving it a distinct color. The presence of specific electronic transitions or chromophores within the newly formed compound can cause the absorption and reflection of light, resulting in a visible color change.

2. Formation of a precipitate: The reaction may involve the formation of a solid precipitate, which can exhibit color due to various factors such as impurities, crystal structure, or ligand-metal interactions. The formation of the yellow solid could be a result of the precipitation of a compound that has a yellow color.

3. Change in oxidation state: The reaction might involve a change in the oxidation state of one or more elements, leading to the formation of compounds with different colors. Transition metal compounds, for example, can exhibit a wide range of colors depending on their oxidation states and coordination environments.

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Answer:

b. between 2 s and 4 s

Explanation:

2-4 was both 3m/s

Answer:

B

Explanation:

B because loudspeakers convert electrical energy into motion of the diaphram and thus into sound energy.

Given k'n = 3k'p = 130 uA/V², w/l = 5, and Vth = 0.7 V.Id in the given circuit is to be determined. The given circuit is as follows: Here, we know that Id = k'n(w/l)(Vgs - Vth)².

For the given circuit, Vgs = Vg - Vs.

For an NMOS transistor, Vg should be greater than Vs by at least Vth to turn the transistor ON.

So, Vgs = Vg - Vs - Vth = 5 - 0.7 - 2 = 2.3 V.

Putting all the given values in the formula for Id, we get Id = k'n(w/l)(Vgs - Vth)²= 3(130)(5/1)(2.3 - 0.7)²= 546 µA.

The value of the current Id is 546 µA.

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For the purpose of lifting heavy loads, a block and tackle pulley system consists of two or more pulleys connected by rope or cable. These pulleys are put in a block configuration and connected so that one pulley is stationary and moves with a load.

Threading the rope through the pulley, which increases the force applied to the rope, provides mechanical advantage. Usually, heavy lifting or applying a lot of force in either direction requires the employment of these pulleys.

Examples of block and tackle pulleys are shown below.

Step pulley

This can be thought of as a collection of pulleys. With pulleys of various diameters fixed in order, pulley faces are converted into step pulleys. It is known as a step pulley because of the way it is constructed.

“V” Groove Pulley

This pulley's face has a groove cut into it that resembles the English letter "V." Both electric motors and cars use it. These pulleys utilize a unique "V"-shaped belt. More than one "V" groove may be cut in some pulleys.

These pulley types are utilized for heavy duty power transfer. Less power slippage is possible when many "V" belts are being used.

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The wall is positively charged, whereas it is negatively charged. If a woollen fabric is not used to massage it, it will not do so. When the sand was drawn inside the balloon, the same thing occurred.

Positive charges pull away from negative charges. The balloon will attract the wool fabric if it is not touched since it contains an equal balance of negative and positive charges. Both balloons will reject one another when they are brushed with the wool cloth because they both receive negative charges.

Positive and negative particles make up the water. Because positive and negative ions are attracted to one another, when you bring the balloon near the water, the positively charged water molecules will pull the water in the direction of the negatively charged balloon.

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Answer:

0.39166666666

Explanation:

Answer:

1) The Newton's law the Hulk is most closely demonstrating is the Third Law of motion

Newton's third law of motion states that action and reaction are equal and opposite.

2) The reason why the Newton's Law the Hulk is most closely demonstrating is the Newton's Third Law of Motion is that according to Newton's Third Law of motion, forces exist in pairs, the action of the Hulk when he leaps upward by pushing against the the Earth (which can be assumed stationary in relation to the Hulk), is equal to the reaction of the Earth, which moves down slightly, away from its initial position.

However, due to the large mass of the Earth, compared to the mass of the Hulk, the downward motion of the Earth due to the reaction force (equal to the force with which the Hulk leaps) is negligibly small, such that the Earth can absorb the Hulk's leap force by reacting mainly locally, at the leap point  by forming a crater, while the Earth in general, remains in the same place

Explanation:

The man can stand approximately 0.346 meters (or 34.6 centimeters) from the right edge of the picnic table without tipping it over. we need to consider the concept of the center of mass and stability.

To determine how close a 81 kg man can stand to the right edge of the 56 kg picnic table without it tipping over, we need to consider the concept of the center of mass and stability.

In order for the table to remain stable and not tip over, the center of mass of the combined system (man + table) must remain within the base of support provided by the table.

Assuming the table is symmetric and evenly distributed, we can approximate the center of mass of the table to be at its geometric center. To maintain stability, the man's center of mass must be positioned directly above or within the base of support provided by the table.

Let's assume that the width of the table is 1 meter. The geometric center of the table will be at 0.5 meters from the right edge.

To calculate how close the man can stand to the right edge without tipping the table, we need to compare the ratio of their masses to the distance from the edge. This can be done using the concept of torque:

Torque(man) = Torque(table)

(Mass of man) * (Distance from the edge) = (Mass of table) * (Distance from the edge)

(81 kg) * (Distance from the edge) = (56 kg) * (0.5 meters)

Solving for the distance from the edge:

Distance from the edge = (56 kg * 0.5 meters) / 81 kg ≈ 0.346 meters

Therefore, the man can stand approximately 0.346 meters (or 34.6 centimeters) from the right edge of the picnic table without tipping it over, assuming the table is symmetric and evenly distributed.

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