IS IT CORRECT I'LL MARK U BRAINLIST !!!

Answer:

Friction force= 120 N

Explanation:

A potential difference applied across a circuit drives an electric current, which is the flow of charged particles. In a conductor, such as a metal wire, the charged particles that carry the current are electrons.                                              

Protons are positively charged particles, but they are much larger and less mobile than electrons in a conductor. Therefore, they do not contribute significantly to the current flow. In fact, the protons in a conductor are generally held in place by the atomic nuclei, so they cannot move through the material. Thus, there is no proton current in a conductor with a potential difference applied across the circuit.
Protons, being part of the atomic nucleus, are held firmly within the atoms of the conductor and cannot move as freely as electrons. This difference in mobility leads to the absence of proton current in a typical conductor when a potential difference is applied across the circuit.

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Answer:

\(\large \boxed{\text{761 kJ}}\)

Explanation:

You calculate the energy required to break all the bonds in the reactants.

Then you subtract the energy needed to break all the bonds in the products.

                        N₂  +   O₂   ⟶         2NO

                     N≡N  + O=O ⟶       2O-N=O

Bonds:         2N≡N   1O=O        2N-O + 2N=O

D/kJ·mol⁻¹:     941      495           201      607

\(\begin{array}{rcl}\Delta H & = & \sum{D_{\text{reactants}}} - \sum{D_{\text{products}}}\\& = & 2 \times 941 +1 \times 495 - (2 \times 201 + 2\times 607)\\&=& 2377 - 1616\\&=&\textbf{761 kJ}\\\end{array}\\\text{The enthalpy of reaction is $\large \boxed{\textbf{761 kJ}}$}.\)

which best describes the field of physics the study of matter and energy

physics, science that deals with the structure of matter and the interactions between the elemental constituents of the observable universe. the scope of study envelops not as it were the conduct of objects beneath the activity of given forces but the nature and root of gravitational, electromagnetic, and nuclear force fields. In simple words, physics is characterized as the science of matter, movement, and energy. Its laws are regularly expressed with economy and accuracy within the language of science.

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The position vs. time graph is a depiction of the motion of an object with time, while the acceleration vs. time graph is a depiction of how the acceleration of an object changes with time. The position-time graph will show an increasing slope for a moving object and a decreasing slope for a stationary object.

When an object is speeding up, its acceleration increases, and when it is slowing down, its acceleration decreases.The slope of the acceleration-time graph reflects the change in velocity over time. For an object that is speeding up, the acceleration-time graph has a positive slope since the object's speed is increasing, whereas for an object that is slowing down, the slope of the acceleration-time graph is negative, and the object's speed is decreasing. Finally, for an object that is stationary, the acceleration-time graph has a slope of zero since the speed is not changing.

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The orbit is 10500km far from earth station and it is MEO ( medium earth orbit ) as the range of MEO is 5000-12000km

What is medium earth orbit ?

A medium Earth orbit (MEO) is an Earth-centered orbit with an altitude between 2,000 and 35,786 km (1,243 and 22,236 mi) above sea level, which is between a low Earth orbit (LEO) and a high earth orbit (HEO).

The distinction between MEO and LEO is made at an arbitrary altitude determined by recognized practice, but the boundary between MEO and HEO is made at the specific altitude of a geosynchronous orbit, in which a satellite completes one complete revolution of the Earth in 24 hours. The shortest period (for a circular orbit at the lowest MEO altitude) is approximately 2 hours for all satellites in MEO, and the maximum time is less than 24 hours.

delay time (t) = 35ms

total distance from satellite to earth =

s= c*t = 3*10^8*335*10^-3

s= 10200000m

s = 10500km

satellite altitude = 8000km

round trip time of signal = t(rr) = 2*s/c

                                                  = 2*8000*1000/3*10^8 = 53.33m/s

The orbit is 10500km far from earth station and it is MEO ( medium earth orbit ) as the range of MEO is 5000-12000km

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Answer:

0.8

Explanation:

F=uR

F=8,000N

R= 1000*10=10000

u=F/R

u= 8000/10000

u=0.8

yes their density are equal

Answer:

i believe its gravity

Explanation:

when something falls it is gravity doing its job

The problem requires us to determine the total signal loss of a transmitter that operates at 2.4 GHz and is connected to an antenna by a 94 feet long LMR-600 cable, given that the cable connector has a loss of 0.47 dB.What is signal loss.

The signal loss refers to the reduction of strength of a signal while it travels through a medium or transmission system from the transmitter to the receiver. In communication systems, signal loss can occur in a cable, antenna, or other components. The total signal loss depends on the specific system used, cable attenuation, connector type, and the distance between the transmitter and receiver.

The total signal loss can be determined as the sum of the cable loss and the connector loss. Total Signal Loss(dB) = Cable Loss(dB) + Connector Loss(dB)  = 0.508 dB + 0.47 dB = 0.978 dBTherefore, the total signal loss of the transmitter connected to the antenna by a 94 feet long LMR-600 cable, assuming that the cable connector has a loss of 0.47 dB, is 0.978 dB, approximately.

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Answer:

B

Explanation:

mass is the amount of matter present in any object or body.

here in the option b, it says they each contain the same amount of matter,

which means they each has the same mass.

When you are in a line of traffic that is crossing a railroad track that has no signals or gates, it is important to exercise caution and follow the rules of the road.

First, you must stop your vehicle at least 15 feet away from the nearest rail and look both ways before proceeding. Make sure that there is enough space on the other side of the track for your vehicle to clear the crossing completely. Never stop, shift gears, or change lanes while crossing the track. It is also important to avoid getting trapped on the track in case of an emergency or breakdown. Remember that trains can approach quickly and silently, so always be aware of your surroundings and stay alert.

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Answer:

4

Explanation:

Because that is when they're mind learns how to read

Answer:

2^3

Explanation:

bdsb

If the object and image distances with respect to the lens are 17 cm and V cm and the focal length is 10 cm, the image distance will be 6.3 cm

1 / f = ( 1 / v ) - ( 1 / u )

f = Focal length

v = Object distance

u = Image distance

f = 10 cm

u = 17 cm

1 / v = ( 1 / 10 ) + ( 1 / 17 )

1 / v = 27 / 170

v = 6.3 cm

Focal length is the distance between the center of the lens and its point of focus. The image distance is the distance between the center of the lens and the image. The object distance is the distance between the center of the lens and the object.

Therefore, the image distance will be 6.3 cm

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Answer:

29.4 m/s

Explanation:

Using the formula: V=Vi + g.t

where V: final velocity, this is  what you want.

Vi: initial velocity, equals to zero as it is falling from rest.

g: acceleration due to gravity = 9.8

t: time, which equals 3 sec.

The student should have controlled the power of the mains supply, as this affects the amount of energy transferred to the heating element and the rate at which it increases in temperature.

A heating element is a device that produces heat by converting electrical energy into heat energy. It is commonly found in electric heaters, stoves, ovens, toasters, and other appliances. The heating element works by passing an electric current through a coil of wire or metal, typically made of nickel-chromium or iron-chromium alloy. When the current passes through the coil, it produces heat as a result of resistance to the flow of current. The heat is then transferred through the surrounding material and into the air. Heating elements are usually designed to operate at a certain temperature, and when this temperature is reached, the element turns off automatically. Heating elements are important components of many household appliances and are used to provide a safe and efficient source of heat.

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Answer:

the work done in raising the load is 24,750 J

Explanation:

Given;

load lifted by the crane with a force, F = 2750 N

height through which the load was raised, h = 9.0 m

The work done by the crane in raising the load is calculated as;

W =  F x h

W = 2750 x 9

W = 24,750 J

Therefore, the work done by the crane in raising the load is 24,750 J

By plugging in the values and performing the calculations, we can determine the density of Ida is approximately 0.0057 g/cm^3.

To calculate the density of Ida, we need to find its volume first and then divide its mass by the volume. We are given the mass of Ida as 4.3x10^16 kg and the average radius as 15.7 km.

Step 1: Convert the radius to meters (1 km = 1000 meters).

Radius of Ida (r) = 15.7 km = 15.7 x 1000 meters = 15,700 meters.

Step 2: Calculate the volume of Ida using the formula for the volume of a sphere.

Volume (V) = (4/3) x π x r^3

V = (4/3) x 3.14159 x (15,700)^3

V ≈ 7.52 x 10^12 m^3

Step 3: Convert the volume to cubic centimeters (1 m^3 = 1,000,000 cm^3).

Volume (V) ≈ 7.52 x 10^12 m^3 = 7.52 x 10^12 x 1,000,000 cm^3 ≈ 7.52 x 10^18 cm^3

Step 4: Calculate the density of Ida by dividing its mass by its volume.

Density = Mass / Volume

Density = 4.3 x 10^16 kg / 7.52 x 10^18 cm^3 ≈ 0.0057 g/cm^3

Finally we get the density of Ida is approximately 0.0057 g/cm^3.

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Two students push on a box in the same direction and a third student pushes in the opposite direction. The net force on the box if each push with a force of 50 N is (F)= 50N.

According to the first law of newton's law of motion when a particle is at rest it always be at rest if any external thing affect on it. That external or internal thing that helps the object move that called Force. It can be measured in Newton, Dyne.

To calculate the force we have to study the question carefully. Two  students push on a box in the same direction and a third student pushes in the opposite direction. So according to the question the net force will be,

F = 2f₁-f₂

Here we know,

f₁= The amount of force that two students apply on the same direction. = 50 N.

f₂= The amount of force that students apply on the opposite direction. = 50 N.

We have to calculate the net force= F N.

Now we put the values in above equation, we get,

F = 2f₁-f₂

Or, F= 100-50

Or, F=50N

From the above calculation we can say that,  The net force on the box if each push with a force of 50 N is (F)= 50N.

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Answer:

Explanation:

We are given the following the following

Initial speed u = 0.5m/s

initial distance S1 = 15cm = 0.15m

Final distance = 0m

Required

Final speed v

Using the equation of motion;

v² = u²+2gS

v² = 0.5²+2(9.8)(0.15)

v² = 0.25+2.94

v² = 3.19

v = √3.19

v = 1.786m/s

Hence  its speed when it reaches the bottom is 1.786m/s

The angular velocity of each tire from the calculation that we have done is 4.0 rad/s.

Let us recall that the linear velocity is the rate of the change of the displacement of an object with time. We now know that it is possible to relate the angular velocity with the linear velocity by the use of the equation;

v=rw

We now have

v = lnear velocity

r = radius

w = angular velocity

w = v/r

w = 3.0 m/s/(1.5 m/2)

w = 4.0 rad/s

Thus we obtain that we have found the angular velocity as 4.0 rad/s.

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A mass wasting process that involves slip of solid rock above a distinct sliding surface is called a rock slide. It is a type of landslide that occurs when rocks or rock fragments slide down a slope due to gravity. The sliding surface is a fracture or plane of weakness in the rock mass.

When this plane of weakness becomes saturated with water or is lubricated by melting snow or ice, it can fail and cause a rock slide.Rock slides can vary in size, from small rockfalls to massive avalanches that cover entire slopes. They can be triggered by natural events, such as earthquakes, heavy rainfall, and erosion, or by human activity, such as construction and excavation.

They can be extremely dangerous and destructive, causing property damage, blocking roads and transportation routes, and even causing loss of life. It is important to monitor and manage slopes prone to rock slides to prevent accidents and damage. A mass wasting process that involves slip of solid rock above a distinct sliding surface is called a rock slide.

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Answer:

yes its benefit

Explanation:

using fossil fuel is bad so this is good because they aren't using it

The time available on Machine II must lie between 1 minute and 3 minutes. The shadow price for Resource 2 (associated with constraint 2) is $3 per minute.

(a) To determine the range of available time on Machine II, we need to consider the constraints provided. The time available on Machine II must be between the time required for Type A souvenirs and the time required for Type B souvenirs.

Time required for Type A souvenir on Machine II: 1 minute

Time required for Type B souvenir on Machine II: 3 minutes

Therefore, the time available on Machine II must lie between 1 minute and 3 minutes.

The meaningful solution for the available time on Machine II is 1 min ≤ Machine II ≤ 3 min.

(b) To maximize the profit, we need to determine the optimal production quantities for Type A and Type B souvenirs given a change in the available time on Machine II.

Let's assume the change in available time on Machine II is represented by k.

To maximize the profit, we need to find the production quantities that maximize the total profit. Let's denote the production quantity for Type A souvenirs as x and the production quantity for Type B souvenirs as y.

The objective function for the profit can be expressed as:

Profit = 0.80x + 1.60y

Subject to the following constraints:

2x + y ≤ 120 (Machine I constraint)

x + 3y ≤ (300 + k) (Machine II constraint)

Using linear programming techniques, the optimal solution will depend on the value of k.

The statement "Ace Novelty's profit is maximized by producing Type A souvenirs 540 5 and 2(223+ *). 3 Type B souvenirs, where -225 1x ** $ 150 X X" seems to be incomplete and unclear. The specific production quantities and profit cannot be determined without knowing the value of k.

(c) To find the shadow price for Resource 2 (associated with constraint 2), we can perform sensitivity analysis.

The shadow price represents the change in the objective function's value per unit increase in the availability of Resource 2 (Machine II in this case). We can determine it by evaluating the sensitivity of the objective function to changes in the constraint.

Since the constraint is x + 3y ≤ (300 + k), the shadow price associated with Resource 2 is the coefficient of the Machine II term, which is 3.

Therefore, the shadow price for Resource 2 (associated with constraint 2) is $3 per minute.

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Answer:

D i took the test

Explanation:

Answer:

The answer is D.

Explanation:

The other ones just don't make sense. AT ALLLLLL!!!!!!!!!!!!!!!!!!!!!!!

Answer:

Voltage V = 117.65 volts

the voltage across the light bulb's filament is 117.65 V

Explanation:

The power of a light bulb can be expressed with respect to voltage and current flow.

Power = voltage × current

P = VI

Making Voltage V the subject of formula;

V = P/I

Given;

Power P = 4.0W

Current I = 0.034A

Substituting the given values;

V = 4/0.034

V = 117.65 volts