define national parks of nepal ?​

To determine the magnitude of current flowing through a copper wire, we can use the equation that relates current, drift velocity, and the cross-sectional area of the wire.

In Example 20.3 of the textbook, it is stated that the current (I) is given by the equation:

I = n * A * v * q

Where:

I is the current,

n is the number density of charge carriers (electrons in this case),

A is the cross-sectional area of the wire,

v is the drift velocity of the charge carriers,

q is the charge of an electron.

Given that the drift velocity (v) is 1.40 mm/s and the diameter of the wire is 1.700 mm, we can calculate the cross-sectional area (A) of the wire. The diameter of the wire is twice the radius, so the radius (r) is 1.700 mm / 2 = 0.850 mm = 0.850 × 10^(-3) m.

The cross-sectional area (A) of the wire can be calculated using the formula for the area of a circle:

A = π * r^2

Substituting the values, we have:

A = π * (0.850 × 10^(-3))^2

Now we can calculate the current (I) using the known values for the number density (n) and the charge of an electron (q):

I = n * A * v * q

Remember to convert all units to SI units (meters and coulombs) for accurate calculations.

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Answer:

gravity and friction

Explanation:

Answer:

\(n=4.5\times 10^{13}\)

Explanation:

Initial charge, \(q_1=10\mu C\)

After conduction, charge on the body becomes,  \(q_2=-2.8\mu C\)

We need to find the number of electrons gained by this charged body.

Net charge,

\(q=q_1+q_2\\\\=10+(-2.8)\\\\=7.2\ \mu C\)

Let n be the number of electrons gained by this charged body. So,

\(q=ne\\\\n=\dfrac{q}{e}\\\\n=\dfrac{7.2\times 10^{-6}}{1.6\times 10^{-19}}\\\\=4.5\times 10^{13}\)

So, \(4.5\times 10^{13}\) electrons gained by this charged body.

When you are halfway around the stadium, average speed value cannot be 0.

Average speed = Total distance travelled / Time taken.

Since you ran halfway across the stadium, a certain amount of distance has been covered. The only way the average speed can be zero is if you remained stationary over a given interval of time.

In a distance-time graph, at the halfway point in the stadium, slope is equal to zero. So, Instantaneous speed is zero. In a Velocity-time graph, at the halfway point in the stadium, slope is equal to zero. So, Instantaneous acceleration is zero. In a Velocity ( w.r.t. time )-time graph, at the halfway point in the stadium, slope is equal to zero. So, Average acceleration is zero.

Therefore, when you are halfway around the stadium, average speed value cannot be 0.

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Given what we know about parliamentary procedure, we can confirm that a motion that can be made so that the chair would be called on to enforce a violated rule is known as an appeal.

Therefore, we can confirm that motion that can be made so that the chair would be called on to enforce a violated rule is known as an appeal.

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The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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Explanation:

The answer is (B). The speed of light is the same for all observers regardless of their motion relative to the light source.

The speed would an observer on Earth measures for the light from the spotlight will be 3×10⁸ m/sec.

Speed is defined as the rate of change of the distance or the height attained. it is a time-based quantity. it is denoted by u for the initial speed while v for the final speed. its si unit is m/sec.

The given data in the problem is;

The speed of light is, \(\rm C =3 \times 10^8\ m/sec\)

All frames of reference have the same speed of light in a vacuum. Therefore the speed would an observer on Earth measures for the light from the spotlight will be 3×10⁸ m/sec.

Hence option B is correct.

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The shortest chain sling ACB for a movable bin is  1.228 m.

The question is not complete. A similar question is in the attachment. Use the image in a similar question for this problem. Look at the picture. In the system works

Triangle ABC is an isosceles triangle. If ∠ CAB = ∠ CBA = θ.

According to Newton's first law, in the y-axis

∑ F = 0

w - T₁y - T₂y = 0

T₁y + T₂y = 2,100

T₁ sin θ + T₂ sin θ = 2,100

5,000 sin θ + 5,000 sin θ = 2,100

10,000 sin θ = 2,100

sin θ = 2,100 ÷ 10,000

sin θ = 0.21

θ = sin⁻¹ (0.21)

θ = 12.12°

Look at AOC

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The force which are responsible for the given options are friction force and normal force

What is centripetal force ?

Centripetal force is a force that acts on an object moving in a circular path, directed towards the center of the circle. This force is responsible for keeping the object moving in a circular path, and is provided by the object's interaction with its surroundings. The magnitude of the centripetal force required to keep the object moving in a circular path is proportional to the mass of the object, the speed of the object, and the radius of the circle.

Centripetal force is not a separate force but rather a resultant force that arises due to other forces acting on the object, such as gravity, tension, friction, or any other force that has a component towards the center of the circle. In order to maintain circular motion, the centripetal force must always be present, and if the force is removed, the object will move away from the circular path in a straight line.

A. The centripetal force on the bicyclist moving around a flat, circular track is provided by the frictional force between the tires and the track.

B. The centripetal force on the bicycle moving around a flat, circular track is provided by the frictional force between the tires and the track.

C. The centripetal force on the race car turning a corner on a steeply banked curve is provided by the normal force of the track pushing up on the tires, which is directed towards the center of the turn. The angle of the banked curve is designed such that the component of the normal force in the horizontal direction provides the necessary centripetal force to keep the car moving in a circular path.

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The forces that contribute to the centripetal force on the object in each of the following examples are frictional force, gravitational force and normal force.

a. In the case of a bicyclist moving around a flat, circular track, the forces contributing to the centripetal force are mainly the frictional force between the tires and the track surface, and the force exerted by the bicyclist to keep the bike moving in a circular path.

b. For a bicycle moving around a flat, circular track, the forces contributing to the centripetal force are similar to those in the first case, with the main difference being the additional contribution of the weight of the bicycle and the rider. The gravitational force acts vertically downwards and provides an additional component of the force that keeps the bike in a circular path.

c. When a race car turns a corner on a steeply banked curve, the forces contributing to the centripetal force are primarily the normal force from the banking surface of the track, which is perpendicular to the track's surface, and the frictional force between the tires and the track.

The normal force is directed towards the center of the curve, providing the centripetal force that keeps the car moving in a circular path. The car's weight also contributes to the normal force, providing an additional component of the force that keeps the car moving in the desired path.

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Answer:

Explanation:

If a ball is thrown vertically upwards with an initial velocity V 0 then here is a set of formula for your quick reference. 1) Maximum height reached = H = V 02 / (2 g) 2) Velocity at the highest point = 0 3) Time for upward movement = V 0 /g 4)

Answer:

1961 kJ

Explanation:

Since the mass of each substance is 1 kg, the heat required to change a substance at is boiling point is its latent heat of vapourization, L. For a given mass, m, the quantity of heat Q = mL

For liquid water, m = 1 kg and L = 2256 kJ/kg.

So, quantity of heat required is thus Q₁ = 1 kg × 2256 kJ/kg = 2256 kJ

For liquid mercury, m = 1 kg and L = 295 kJ/kg.

So, quantity of heat required is thus Q₂ = 1 kg × 295 kJ/kg = 295 kJ

The amount their thermal energies differ is thus Q₁ - Q₂ = 2256 kJ - 295 kJ = 1961 kJ

Answer:

A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

Answer:

An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral.

Explanation:

Answer:

The correct answer is - Disagree with her.

Explanation:

Fluorescence substances are the substances that glow when they absorbed visible light and ultraviolet radiation and objects will glow when put under Ultraviolet light and makes the molecules excited.

Microwaves have a different wavelength than ultraviolet radiation and therefore does not able to excite the molecule of the fluorescent objects. The microwave radiation will not glow.

Thus, the correct answer is - disagree with her.

The full cycle of moon phases averages 29.531 days. A quarter of that is 7.38 days. So "7 days" is a pretty good approximation for casual conversation. It's true.

Answer:True

Explanation:

The full cycle of the moon is 29.631 or we could say 29.5 and the quarter is 7.34 I think so yes it’s true it’s appropriately a full average and if you subtract this two it true

The speed of roller coaster would be 14.8 m/s

To calculate the speed of the roller coaster at point 4, we can use the conservation of energy principle, which states that the initial energy of the system (potential energy + kinetic energy) is equal to the final energy of the system.

Assuming that point 1 is the highest point of the roller coaster and that there is no friction or other energy losses, we can use the following equation:

                           mgh = (1/2)mv^2

where,

m is the mass of the roller coaster,

g is the acceleration due to gravity,

h is the height of point 1 above point 4,

v is the speed of the roller coaster at point 4.

Solving for v, we get:

                                       v = sqrt(2gh)

where,

h is the vertical distance between point 1 and point 4.

Now, we need to find the value of h. The thermal energy generated in going from point 1 to point 4 is not directly related to the height difference, but we can assume that all of the potential energy at point 1 is converted to thermal energy at point 4, and that the roller coaster loses no energy due to friction or other factors.

Therefore, we can use the formula for potential energy:

                                     mgh = 134102 J

Solving for h, we get:

h = 134102 J / (mg)

Substituting the given values, we get:

h = 134102 J / (702 kg x 9.81 m/s^2) = 19.1 m

Finally, substituting the value of h into the equation for speed, we get:

v = sqrt(2 x 9.81 m/s^2 x 19.1 m) = 14.8 m/s

Therefore, the roller coaster would be going 14.8 m/s at point 4.

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The total resistance of the RLC series circuit is determined as 20 ohms.

The total resistance of the RLC series circuit is calculated as follows;

R = Vrms / Irms

where;

Substitute the given parameters and solve for the total resistance

R = (180) / (9)

R = 20 ohms

Thus, the total resistance of the RLC series circuit is determined as 20 ohms.

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Answer:

wavelength =75m

using v=fΠ

where Π is wavelength

The ladder angle rule is important and easy way to stay safe while climbing on a ladder.

Any ladder that is leaning such as an extension or portable straight ladder which do not support itself needs a right angle to set up to keep it both sturdy and safe.

Inclined angle of ladder is an important factor in Ladder safety, if it's wrong the ladder might fall causing injuries. There is a way to determine the angle length-

1. 4 to 1 Rule

1. 4 to 1 rule - According to this rule, your ladder should be placed at 75°

this rule means that for every 4 feet of the wall height, the bottom of the ladder must be placed one ft. away.

e.g. - The height you want to climb is 20 ft.

following the rule - 20 X 1/4 = 5ft.

which means you need to place the base of your ladder 5 feet away from the wall.

if bottom is closer, it will create a wider angle and the ladder will fall backward. if the ladder is far, inclined angle is small and it will fall.

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The frequency of the 5th harmonic in an open pipe is 1062.5 Hz. If the end of the pipe is covered, the frequency will increase.

In an open pipe, the harmonics (resonant frequencies) are generated based on the length of the pipe. The fundamental frequency (1st harmonic) is determined by the length of the pipe, and the higher harmonics are integer multiples of the fundamental frequency.

In this case, the 5th harmonic has a frequency of 1062.5 Hz in an open pipe that is 80 cm long. When the end of the pipe is covered, the pipe effectively becomes a closed pipe. In a closed pipe, the harmonics are generated differently, and the resonant frequencies are different.

When the end of the pipe is covered, the resonant frequencies in the closed pipe are higher compared to those in the open pipe. Therefore, if the end of the pipe is covered, the frequency of the 5th harmonic would increase from 1062.5 Hz. The exact new frequency would depend on the specific characteristics of the closed pipe.

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Answer:

It can be either a moon or a satellite

Explanation:

a moon is a piece of space debris that orbits a planetdue to the planets gravitational force. Inherently, satellite mimics a moon but it is used for collecting data and etc

The length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C.

Temperature is a unit of measurement for how hot or cold an object or system is. The average kinetic energy of the particles in a substance or system is expressed by this physical quantity.

The following formula can be used to determine the lengthening of the rail:

ΔL = αLΔT

where L is the length that has been added, is the linear expansion factor, L is the initial length, and T is the temperature change.

Given:

L = 25 m (original length)

ΔT = 30°C - 0°C = 30°C (change in temperature)

α = 11 x 10^(-6) (°C)^(-1) (linear expansion coefficient)

In the formula, changing the values:

ΔL= (11 x 10(-6) (°C)(-1)) x (25 m) x (30°C).

ΔL = 0.00825 m

Consequently, the length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C (rounded to two decimal places).

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The time T is identical to 0.50 seconds since one whole wave completes in 0.50 seconds. F = 1/D = 1/0.5 = 2 Hz, where T = 0.5 Frequency.

A wave, according to Webster's dictionary, is a perturbation or variation that gradually transfers energy from one place to another inside a medium. It can be a multiple and complex or a change in pressure, magnetic or electrical strength, electric potential, or heat.

Water moves in a circular pattern as a result of energy traveling through it, creating waves. Water does not, however, literally move in waves. Without obstruction, waves can potentially flow across the ocean, transmitting energy rather than water.

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The speed of the wind is 17 mph and the speed of the plane in still air is 119 mph.

Let the speed of the plane be x and the speed of the wind be y. Then, the speed of the plane with the wind becomes x + y, while the speed of the plane against the wind is x - y.

The distance traveled with the wind in 3 hours is 408 miles.

Therefore, we can write the equation as:

3(x + y) = 408

Divide both sides by 3:

x + y = 136  .... (1)

The distance traveled against the wind in 4 hours is also 408 miles.

Therefore, the equation can be written as:

4(x - y) = 408

Divide both sides by 4:

x - y = 102  .... (2)

Now we can solve these two equations using the elimination method.

Add equations (1) and (2):

x + y + x - y = 136 + 1022x = 238x = 119 mph

Therefore, the speed of the plane in still air is 119 mph.

Now, substitute this value of x in equation (1):

119 + y = 136y = 17 mph

Therefore, the speed of the wind is 17 mph.

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The correct question is:

A plane flies 408 mi with the wind in 3 hr. The return trip takes 4 hr. What is the speed of the wind and the speed of the plane in still air?

Answer: The balloons repel each other but attract the rabbit fur.

Brainliest pwease if I could do you any help!

Here, both the balloons gains a negative charge through rubbing and they attracts to the neutral rabbit fur. But the balloons themselves repel each other. Hence, option B is correct.

When a  material rub on a surface its electrons gets aligned and acquire a negative charge. This negative charge when comes in contact with a neutral material, the second one get partially polarized and gets attracted to the negative charge.

This flow of electrons through induced polarization is called static electricity. When the balloon are rubbed with the neutral rabbit fur and gets negatively charged by friction.

This negatively charged balloons repel each other but they induce a polarity to the neutral rabbit fur and its positive charges gets aligned with the negative charges results in electrostatic attraction.

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