a phosphorus atom needs to gain ---electrons to achieve a full octet

Answer:

1560 m

Explanation:

Constant velocity of 120m/s for 8 seconds is 120 x 8 = 960, but it was already 600 m above ground so 960 + 600 = 1560 m.

Answer:

A) F_g = 8.9278 × 10^(-30)

B) F_e = 1.6 × 10^(-17) N upwards

C) F_m = 6.8 × 10^(-17) N downwards

Explanation:

A) Formula for gravitational force is;

F_g = m_e × g

m_e is mass of electron = 9.11 x 10^(-31) kg

F_g = 9.11 x 10^(-31) × 9.8

F_g = 8.9278 × 10^(-30) N downwards

B) Formula for Electric force is;

F_e = qe

q is charge on electron = 1.6 × 10^(-19) C

E is electric field = 100 N/C

F_e = 1.6 × 10^(-19) × 100

F_e = 1.6 × 10^(-17) N upwards

C) Magnetic force is given by the formula;

F_m = qVB

q is charge on electron = 1.6 × 10^(-19) C

V is velocity given as 8.50 × 10^(6) m/s

B is magnetic field = 50.0 μT = 50 × 10^(-6) T

F_m = 1.6 × 10^(-19) × 8.50 × 10^(6) × 50 × 10^(-6)

F_m = 6.8 × 10^(-17) N downwards

The frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.

To determine the frequency at which the square object will swing back and forth, we can use the formula for the period of a simple pendulum. The period (T) is the time taken for one complete oscillation.

For a simple pendulum, the period can be given by the formula:

T = 2π * √(L/g)

Where:

T = period

L = length of the pendulum (distance from the pivot to the center of mass)

g = acceleration due to gravity

In this case, the length of the pendulum is the distance from the pivot to the center of mass of the square object. Since the object is hung at its upper corner, the distance from the pivot to the center of mass is (L/2).

Therefore, the period of the square object can be expressed as:

T = 2π * √((L/2)/g)

T = 2π * √(L/2g)

To find the frequency (f), we can take the reciprocal of the period:

f = 1/T

f = 1 / (2π * √(L/2g))

f = √(g / (4\(\pi ^{2}\) * L))

So, the frequency at which the square object will swing back and forth is given by √(g / (4\(\pi ^{2}\) * L)), where g is the acceleration due to gravity.

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The height of the ceiling at the center of the whispering gallery is approximately 43.3 feet.

In an ellipse, the sum of the distances from any point on the ellipse to its two foci is constant. In this case, the two foci are located 25 feet from the center of the hall.

Given that the hall is 100 feet in length, the distance from one end to the center is 50 feet. We can consider this as the semi-major axis (a) of the ellipse.

The sum of the distances from any point on the ellipse to its two foci is equal to 2a. Thus, the sum of the distances from the ceiling at the center of the hall to the two foci is also 2a.

Since the foci are located 25 feet from the center, the sum of the distances is 2a = 50 feet.

To find the height of the ceiling at the center, we need to determine the semi-minor axis (b) of the ellipse. The semi-minor axis can be calculated using the formula:

b = √(a² - c²)

where c represents the distance from the center to each focus. In this case, c = 25 feet.

Substituting the values into the formula:

b = √(50² - 25²)

b = √(2500 - 625)

b = √(1875)

b = 43.3 feet

Therefore, the height of the ceiling at the center of the whispering gallery is approximately 43.3 feet.

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Answer:

Horizontal Component = 129.9 km/h

Vertical Component = 75 km/h

Explanation:

When a vector is resolved on the x-axis and the y-axis, the components so formed are called its rectangular components. The component along y-axis is called the vertical component and the component along x-axis is called horizontal component. These components can be given by following formulae:

Horizontal Component = v Cos θ

Vertical Component = v Sin θ

where,

v = velocity = 150 km/h

θ =  angle = 30°

Therefore,

Horizontal Component = (150 km/h)(Cos 30°)

Horizontal Component = 129.9 km/h

Vertical Component = (150 km/h)(Sin 30°)

Vertical Component = 75 km/h

The net displacement of the particle for the first 5 seconds is -35 meters.

What is displacement?
The shortest route an object takes to get from one point to another is referred to as displacement. It is known as the change in an object's position, to put it simply. Given that it has both a magnitude and a direction, it is a vector quantity. When describing an object's position in relation to a reference frame, displacement typically alludes to the stationary objects within the frame. It suggests that now the object has been displaced or moved.

Velocity Function: v(t) = 3 - 4t
The net displacement of the particle for the first 5 seconds can be calculated by finding the area under the curve. The area under the curve can be found by taking the integral of the velocity function over the given time period.

∫v(t) dt = ∫(3 - 4t) dt
From 0 to 5 seconds:
= 3t - 2t2 | 0 to 5
= 3(5) - 2(5)2
= 15 - 50
= -35
Therefore, the net displacement of the particle for the first 5 seconds is -35 meters.

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An electron microscope is more suitable than an optical microscope for "seeing" objects less than 1 μm in size due to several reasons:

1. Wavelength of the Imaging Beam: In an electron microscope, the imaging beam consists of electrons, which have much shorter wavelengths than visible light used in optical microscopes. The wavelength of electrons is on the order of picometers (10^-12 meters), while visible light has a wavelength on the order of hundreds of nanometers (10^-9 meters). The shorter wavelength of electrons allows for higher resolution and better visualization of smaller details.

2. Magnification: Electron microscopes can achieve much higher magnifications than optical microscopes. They can magnify objects up to millions of times, allowing for the visualization of tiny structures and features that would be indiscernible with an optical microscope.

3. Electron Interaction: When the electron beam interacts with the specimen in an electron microscope, various signals are generated, including secondary electrons, backscattered electrons, and characteristic X-rays. These signals provide valuable information about the composition, morphology, and topography of the specimen. Optical microscopes primarily rely on the absorption and scattering of light, which may not provide sufficient contrast or detailed information for small objects.

4. Sample Preparation: Electron microscopy typically requires more complex and specialized sample preparation techniques compared to optical microscopy. However, these techniques enable the examination of smaller objects and provide more detailed information about their structure and composition.

Overall, the combination of shorter electron wavelengths, higher magnification capabilities, and specialized imaging techniques make electron microscopes more suitable for visualizing objects smaller than 1 μm in size.

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Answer:

4.2 is the answer

Explanation

The image formed in a plane mirror is an equal distance behind the mirror as the object in front of it.

Step 1: the equation to this problem would be: 8.4/2

Step 2: 8.4 ÷ 2 = 4.2

Hope you could understand.

If you have any query, feel free to ask.

In a series circuit consisting of a resistor and capacitor connected to an AC generator, the impedance of the circuit can be calculated using the given information.  The impedance of a series circuit is the total opposition to the flow of current, and it is represented by the symbol Z.

In this case, the circuit consists of a resistor and a capacitor connected in series. The impedance of the resistor, denoted as R, is simply the resistance value. The impedance of the capacitor, denoted as Xc, is given by the reciprocal of the product of the angular frequency (ω) and the capacitance (C). The angular frequency ω is calculated as 2π times the frequency of the AC generator.

To find the total impedance of the circuit, we need to calculate the sum of the resistive and reactive components. The impedance Z is the square root of the sum of the squares of the resistance and reactance: Z = √(R² + Xc²). Given the values of the resistor and capacitor, we can substitute them into the equation and solve for the impedance. The given information does not provide the frequency or capacitance values, so it is not possible to determine the exact impedance without this additional information. However, once the frequency and capacitance are known, the impedance can be calculated using the formula mentioned above.

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The correct question is-

What is the impedance of a series circuit consisting of a resistor and capacitor connected across an AC generator, where the EMF of the generator is given by v0 = 120 V, R is the resistance, C is the capacitance, and ω is the angular frequency?

The correct answer is -

In a series circuit with a resistor and capacitor connected across an AC generator, the impedance (Z) can be calculated using the formula:

Z = √(R² + (1/(ωC))²),

where R is the resistance, C is the capacitance, and ω is the angular frequency.

The impedance of the circuit represents the total opposition to the flow of alternating current. The resistance component (R) is responsible for dissipating energy in the form of heat, while the reactance component (1/(ωC)) is related to the capacitor's ability to store and release energy.

By calculating the impedance, we can understand the overall resistance offered by the circuit to the AC signal. This helps determine the current flow and voltage drop across the circuit components.

In summary, the impedance of a series circuit with a resistor and capacitor connected across an AC generator is given by the formula Z = √(R² + (1/(ωC))²). It combines the effects of resistance and reactance, providing a measure of the overall opposition to the AC current flow in the circuit.

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The power delivered is 25 Watts (W) because Power = Work/Time = 50 J/2 seconds = 25 W.

Power is the rate at which work is done or energy is transferred. It is expressed as the amount of work done (in joules) divided by the time it takes to do the work (in seconds). Power is measured in units such as watts (W) or joules per second (J/s).

Power is an important concept in physics, engineering, and other sciences, as it allows us to understand the rate at which energy is used or transferred.

Calculation of power

Power = Work/Time

Power = 50 J/2 seconds

Power = 25 W

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Answer: D. thousands to millions of years

Explanation: Stages within a rock's cycle cannot happen quickly. The formation and deterioration can take thousands to millions of years to occur.

I hope this helps!

Good luck <3

Answer:

a

Explanation:

Air is blown through a cone. if the density of the stream is decreasing, then the mass flow rate of the outlet stream is as follow:

If the density of the stream is decreasing, then the mass flow rate of the outlet stream is greater than the mass flow rate of the inlet stream.

What is mass flow?

Mass flow refers to the amount of mass that passes through a certain area per unit time. It's typically measured in units of kg/s or lb/s.

What is density?

Density refers to the amount of matter in a particular area, typically measured in kg/m3 or lb/ft3. It's a measure of how much mass there is per unit volume.What happens when the density of the stream decreases?The mass flow rate of the outlet stream is greater than the mass flow rate of the inlet stream when the density of the stream decreases. As a result, the mass flow rate of the outlet stream will be higher than the mass flow rate of the inlet stream

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Answer:

Speed = 300 m/s

Explanation:

Given the following data;

Frequency = 150 Hz

Wavelength = 2 meters

To find the speed of the wave;

Mathematically, the speed of a wave is given by the formula:

\( Speed = wavelength * frequency \)

Substituting into the formula, we have;

\( Speed = 2 * 150\)

Speed = 300 m/s

An appropriate speed for glacial movement generally is six centimeters a year.

A glacier is a vast, slow-moving mass of snow and ice that collects in mountain valleys and spreads outwards, frequently flowing like a very slow river. It forms when snow accumulation exceeds snowmelt, and the compacted snow transforms into ice, a process known as "firnification." This ice subsequently flows downhill under the weight of additional snow accumulation, occasionally for hundreds of miles.

Glaciers can move up to several meters per day, but they typically move at a much slower pace. Even though the speed of a glacier might vary widely based on factors like slope, basal conditions, temperature, and ice thickness, a reasonable speed for glacial movement is six centimeters a year. Furthermore, the rate of movement can vary depending on the time of year and the time of day.

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The plane's speed is 450 miles per hour, and the wind speed is 50 miles per hour. This is determined by solving the equations derived from the distances and times of the flight with and against the wind.

Let's assume the speed of the plane (without considering the wind) is P, and the speed of the wind is W.

When flying into a headwind, the effective speed of the plane is reduced by the wind speed. So the equation for the outbound flight is:

P - W = 2000 miles / 5 hours

P - W = 400 miles per hour (mph)  ---(Equation 1)

When flying with a tailwind, the effective speed of the plane is increased by the wind speed. So the equation for the return flight is:

P + W = 2000 miles / 4 hours

P + W = 500 miles per hour (mph)  ---(Equation 2)

Now we have a system of two equations (Equation 1 and Equation 2) with two variables (P and W). We can solve this system to find the values of P and W.

Adding Equation 1 and Equation 2 together, we eliminate the variable W:

(P - W) + (P + W) = 400 mph + 500 mph

2P = 900 mph

P = 450 mph

Substituting the value of P back into Equation 1 or Equation 2, we can solve for W:

450 mph - W = 400 mph

W = 450 mph - 400 mph

W = 50 mph

Therefore, the plane's speed is 450 mph and the wind speed is 50 mph.

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Answer:

You need to provide the question and (if it has them) answer options for the question. Once you have done that, delete my response so I may be able to answer your question faster than normal.

Explanation:

Answer:

10 kg rock at 15 degrees

Explanation:

did test

True reversing controllers contain two separate contactors and 2 overload relays.

Reversing controllers are equipment designed to enable bidirectional rotation of a motor. These devices find common application in scenarios where the motor necessitates the ability to move a load in both forward and reverse directions, such as conveyors, hoists, and winches.

True reversing controllers are equipped with a pair of distinct contactors and two overload relays. This arrangement is imperative since each rotational direction mandates its dedicated contactor and overload relay to safeguard the motor against excessive heat generation.

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Answer:

D is correct

Explanation:

In an AC transformer circuit, the type of resistance is called "impedance."

Impedance is a complex measure of resistance in AC circuits, which takes into account not only the resistive component (due to resistance in wires and components), but also the reactive component due to inductance and capacitance.

Impedance is crucial in AC transformer circuits, as it affects the voltage and current relationship, and the power transfer efficiency.

Summary: The resistance in an AC transformer circuit is referred to as "impedance," which encompasses both resistive and reactive components and affects the performance of the circuit.

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Answer:

Picture?

Explanation:

The roller coaster will have equal kinetic and potential energy at any point starting from rest and reaching the minimum height.

The given problem is based on the concepts and fundamentals of kinetic energy and potential energy. The energy of an object by virtue of its position is known as kinetic energy. And the energy of object by virtue of its position is called potential energy.

Thus, we can conclude that the roller coaster will have equal kinetic and potential energy at any point starting from rest and reaching the minimum height.

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Answer:

An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The level of the sound can be decreased by gradually draining the air from a plastic bottle. The sound about an alarm clock cannot be heard at all since sound cannot travel through a vacuum.

A ringing alarm clock will gradually grow quieter when air is gently drawn out of the area around it and placed beneath a glass jar. Because sound is indeed a mechanical wave that moves across a medium, this is the case.

We can hear the sound because the air molecules in the jar shake as sound waves pass through them. The amount of air particles available to vibrate and convey sound waves declines when air is eliminated, which lessens the sound's strength.  There will be so little remaining air to vibrate due to the almost full removal of the air that the sound will be almost undetectable.

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Given:

R1 = 56Ω

R2 = 8 Ω

Give that the resistors are i

Answer:

because in the roller coaster you have a big seat belt soo you won't fall

because you dont. hahahaha

All the PE on costs 2q could be changed into its KE. A electric potential vtot just at rectangular's center is decided by using the equation KE of a load

\(2q = ( 12 - 3*\sqrt2 )*kq2/d.\)

the electrical potential (additionally referred to as the electric area capability, ability drop, the electrostatic capacity) is described as the quantity of work energy had to move a unit of electrical charge from a reference point to the unique factor in an electric powered field. extra exactly, it's far the electricity in line with unit rate for a check rate this is so small that the disturbance of the sphere underneath attention is negligible.

Moreover, the movement throughout the sector is supposed to continue with negligible acceleration, with a view to avoid the check price obtaining kinetic power or producing radiation. by definition, the electric capacity at the reference factor is zero gadgets. usually, the reference factor is earth or a factor at infinity, although any point can be used.

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Complete Question: -

What is the electric potential VTOT at the center of the square? make the usual assumption that the potential tends to zero far away from a charge. express your answer in terms of q, d, and appropriate constants?