The voltage difference across a membrane that produces a flux of a given ion species that is equal but opposite to the flux due to the concentration gradient of that same ion species

Answer:

436.56 centimeters

Explanation:

heart this! My answer is correct, I search it.

a). 1.2 s

b). 3.81 m

c) v= 6.8 m/s

d) v= 27.05 m/s

Speed is define as the distance per unit time. It is also define as how fast an object is  moving.

According to the question:

Height = 1.5 m , speed = 7.0 m/s.

a)By using 1st equation of motion

\(V = V_{0} + g*t.\\V = 0 \\V_{0} = 7.0 m/s.g = -9.8 m/s^2\\0 = 7 + (-9.8 m/s^2)*t\\t = 1.2 s\)

b.

\(h = 1.5 + V_{0} *t + 0.5g*t^2\\V_{0} = 7.8 m/s\\t = 1.2s , g = -9.8 m/s^2\\h = 3.81 m\)

c.

\(V^2 = V_{0} ^2 + 2g*d\\V_{0} = 7.8 m/s\\g= -9.8 m/s^2.\\d= 2.2-1.5 = 0.7 m\\V = 6.8 m/s\)

d.

\(V^2 = V_{0} ^2 + 2g*h\\V_{0} = 0\\g = +9.8 m/s^2.\\h = 6.8 m\\V = 27.05 m/s\)

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Answer:C car

Explanation:

The height of the mountain would be 1002.048 m

The total applied force per unit of area is known as the pressure.

The pressure depends both on externally applied force as well the area on which it is applied.

The mathematical expression for the pressure

Pressure = Force /Area

As given in the problem the reading of a mercury barometer is 75.58cm at the base of a mountain and 66.37cm at the summit.

density of mercury =13.6g/m³

                               =13600 kg/m³

density of air =1.25kg/m³

the gauge pressure of the mercury = the gauge pressure of the air

ρgH for the mercury = ρgH for the air

13600×9.81×(75.58-66.37) = 1.25 ×9.81 ×(height of the mountain )

(height of the mountain) = 100204.8 cm

                                        = 1002.048 m

Thus, the height of the mountain would be 1002.048 m

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Answer:

Stopping distance = 40m

Explanation:

Given the following :

Initial speed of vehicle before applying brakes = 72km/hr

Converting km/hr to m/s:

72km/hr = [(72 * 1000)m] / (60 * 60)

72km/hr = 72,000m / 3600s

72km/hr = 20m/s

Deceleration after applying brakes (-a) (negative acceleration) = - 5m/s^2

From the 3rd equation of motion:

v^2 = u^2 + 2as

Where v = final Velocity ; u= Initial Velocity ; a = acceleration and s = distance

Final velocity when the car stops will be 0

Therefore ;

v^2 = u^2 + 2as

0 = 20^2 + 2(-5)(s)

0 = 400 - 10s

10s = 400

s = 400/10

s = 40m

Therefore, the stopping distance of the car = 40 meters

Answer:

a) Strings of guitar (being played)

b) Heart-beat in a healthy person

c) Motion of an apple falling from a tree

Explanation:

a) The motion of the string of a guitar being played is the only motion involving simple harmonic motion.

b) All the other motions are circular motion except the heart beat in a healthy person, which is periodic.

c) The motion of an apply falling from a tree is the only motion under the complete influence of gravity from the onset till the end.

mass=30 force=50

(a) 50÷30

The pulser creates electrical signals at the start of each ultrasound pulse, which then excites the PZT crystals within the transducer, causing them to vibrate and emit sound waves in the form of sound beams. This process occurs during the transmission phase of an ultrasound exam.

The pulser creates electrical signals that excite the transducer's PZT (lead zirconate titanate) crystals when an ultrasound machine is in operation. This process occurs during the transmission phase, where the pulser sends electrical signals to the transducer, causing the PZT crystals to vibrate and generate sound beams. These sound beams then propagate through the medium being examined, creating echoes that are detected by the transducer and transformed into an ultrasound image.

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Answer: please find the attached file for the solution.

Explanation:

In a velocity time graph for the motion of the body, the total distance covered by the body is area under the graph.

Please find the attached file for the solution.

Answer: 37.5 nm

Explanation: speed of light c= 3.00·10^8 m/s.

I use same accuracy to speed of light as it's for frequency.

Frequency f= 8.01·10^15 1/s

Speed c = wavelength · frequency

Wavelength = c/f = 3.745·10^-8 m

The wavelength of light associated with a frequency of 8.01E15 Hz is approximately 374 nm.

Wavelength is a term used in physics to describe the distance between two consecutive peaks or troughs of a wave. It is usually denoted by the Greek letter lambda (λ) and is measured in units of length, such as meters, centimeters, or nanometers.

We can use the formula c = λν, where c is the speed of light (approximately \(3.00 x 10^8 m/s\) ), λ is the wavelength in meters, and ν is the frequency in Hertz.

First, we need to convert the frequency from Hz to \(s^-1:\)

\(8.01 x 10^15 Hz = 8.01 x 10^15 s^-1\)

Next, we can rearrange the formula to solve for λ:

λ = c/ν

λ = (\(3.00 x 10^8 m/s) / (8.01 x 10^15 s^-1)\)

λ ≈\(3.74 x 10^-8 m\)

Finally, we can convert meters to nanometers:

λ ≈ \(3.74 x 10^-8 m x (1 nm / 1 x 10^-9 m)\)

λ ≈ 374 nm

Therefore, the wavelength of light associated with a frequency of 8.01E15 Hz is approximately 374 nm.

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Answer:

False

Explanation:

There are indeed more than just one way to modify behaviour .

Answer:

one fourth of accelerattion, its obvious

Explanation:

A specific net force is applied to an object, and it causes a certain acceleration. If the same net force is applied to a new object with four times the mass, the acceleration of the more massive object would be one-fourth of the initial acceleration.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The mathematical expression for Newton's second law is as follows

F = m × a

As given in the problem statement if a specific net force is applied to an object, it causes a certain acceleration. If the same net force is applied to a new object with four times the mass,

Since the force is the same and the mass is four times the initial mass, the acceleration would be one-fourth of the initial acceleration.

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The statement that a converging lens will send all of the light that it receives from a distant star through a point is true.

This point is known as the focal point of the lens. The way a converging lens works is by bending the light rays that pass through it towards a single point, which is the focal point.

The distance between the lens and the focal point is known as the focal length of the lens. This property of the converging lens is what allows it to form images of distant objects on a screen or in the eye.

It is important to note that the size and position of the image formed by the lens will depend on the distance between the lens and the object being observed, as well as the distance between the lens and the screen or eye.

This is known as the lens equation and can be used to calculate the properties of images formed by lenses.

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Answer:

5

Explanation:

If you straighten out the line, it touches the 5, which makes the length 5

Answer:

nuclear envelope

Explanation:

it surrounds the nucleus and all of its contents

Answer:

a) What is the car’s average acceleration?  

5.33 m/s^2 [Backward]

b) What is its initial velocity?

27.99 m/s [Foreward]

The forces exerted on the ball when the ruler touches it will depend on a variety of factors such as the material of the ball and ruler, the speed and angle of contact, and the mass of the ball and ruler.

Assuming that the ruler and ball are made of solid materials and the ruler is touching the ball with a small force, the primary forces that will be exerted on the ball are:

Normal force: This is the force exerted by the ruler on the ball perpendicular to the surface of contact. It is equal in magnitude and opposite in direction to the force exerted by the ball on the ruler, according to Newton's third law.

Frictional force: This is the force that opposes the motion of the ball relative to the ruler. It acts tangentially to the surface of contact and is proportional to the normal force and the coefficient of friction between the two surfaces.

Air resistance: This is the force exerted by the air molecules on the ball as it moves through the air. It acts in the opposite direction to the velocity of the ball and is proportional to the velocity and surface area of the ball.

Gravity: This is the force that pulls the ball towards the center of the Earth. It acts vertically downwards and is proportional to the mass of the ball and the acceleration due to gravity.

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To determine the activation energy, more information is needed. The rate of reaction doubling with every 10-degree rise in temperature is a characteristic of reactions that follow the Arrhenius equation.

The Arrhenius equation describes the relationship between the rate of a reaction and temperature, given by the equation k = Ae^(-Ea/RT), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.

If a reaction doubles its rate with every 10-degree rise in temperature, it indicates that the exponential factor e^(-Ea/RT) becomes 2. Taking the natural logarithm of both sides, we have ln(2) = -Ea/RT.

However, without knowing the specific temperature or the rate constant at a particular temperature, it is not possible to determine the exact value of the activation energy (Ea). Additional data, such as rate constants at different temperatures, would be needed to calculate the activation energy using the Arrhenius equation.

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The average speed Alan must travel at for the rest of the journey is 96 km/h.

The given parameters;

The first distance traveled by Alan is calculated as;

\(d_1 = 64 \ km/h \times 4.25 \ h\\\\d_1 = 272 \ km\)

The total distance traveled by Alan is calculated as;

\(\frac{1}{4} \times \ total \ distance = 272 \ km\\\\ total \ distance = 4 \times 272 \ km\\\\ total \ distance = 1,088 \ km\)

The distance traveled by Alan in the second journey is calculated as;

\(d_2 = \frac{3}{4} \times 1,088 \ km = 816 \ km\)

The time of motion for the second journey is calculated as;

\(t_2 = T- t_1\\\\t_2 = 12.75 \ hr - 4.25 \ hr\\\\t_2 = 8.5 \ hr\)

The average speed of Alan in the second journey is calculated as;

\(V = \frac{distance}{time} \\\\V = \frac{816 \ km}{8.5 \ h} = 96 \ km/h\)

Thus, the average speed Alan must travel at for the rest of the journey is 96 km/h.

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Answer: A) Current

Current is the flow of electrons. The more electrons that flow, then the higher the amperage which measures this flow. If the current is high enough, then the electrical shock may cause damage of some kind.

"Amperage" is abbreviated as "Amp". You may see something like "milliamp" when it comes to measuring this amperage.

Answer:

asteroid belt

Explanation:

The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars, that is occupied by a great many solid, irregularly shaped bodies, of many sizes but much smaller than planets, called asteroids or minor planets.

The force needed to break another wire of the same length and material but twice the diameter is 200N.

Because the wires are made of the same material, their modulus of elasticity must be the same.

As a result, the ratio of longitudinal stress to longitudinal strain (Young's Modulus of Elasticity) must be the same. Now, the strains in both wires must be the same before they break.

Therefore,

stress = Young's modulus × strain,

both wires must be the same.

Because the second wire has a diameter twice that of the first, its area of cross section is four times that of the first. As a result, in order to generate the same stress, the force applied to the second wire must be four times that applied to the first wire.(since stress = force/cross section area).

Thus, the force required to break the second wire is 4200=800N.

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Answer:

The correct option is;

A.

Explanation:

The speed of sound varies with the medium within which the sound propagates. Therefore, the wavelength of the sound wave changes as it moves from one medium to another

The speed of sound in liquid which is given by the square root of the ratio of the bulk modulus (compression resistance) to the density of the liquid is generally faster than in gas, therefore, given that the frequency of the sound source in constant, the wavelength, λ, given as λ = v/f, which is therefore, directly proportional to the speed of sound, also reduces, which is represented by a reduced distance between successive crest as seen in figure A.

(a) The colors that elements emit when they emit photons are due to the specific energies associated with different electron transitions within the element's atoms.

(b) The energy difference is 0 eV, the photon will not be emitted and there will not be a frequency or wavelength associated with it.

To calculate the frequency (f) and wavelength (λ) of the emitted photon, we can use the following formula:

f = E/h

where;

The energy difference can be calculated using the formula:

E = (13.6 eV) / n^2

where;

Plugging in the values for n = 4 and n = 2, we get:

E = (13.6 eV) / 4^2 - (13.6 eV) / 2^2

= 3.4 - 3.4 eV

= 0.0 eV

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Answer:

potential energy

the name comes from the fact that the ruler has "potential" to act

Explanation:

Explanation:

The deformation of the ruler creates a force in the opposite direction, known as a restoring force.

I'm not sure if it's correct...

Faith, respect, and effective communication are the three tips to start a healthy dating relationship mentioned in the article.

What are three recommendations for beginning a happy relationship?

Trust, respect, effective communication, adaptability, a common interest, time apart, different connections (with family and friends), and appreciation. Each partner needs to have confidence in the other. Never should your partner belittle you, test you, or say anything disparaging about you.

What are good relationships?

Healthy relationships involve open communication, honesty, trust, and respect between partners as well as work and compromise from both parties. There is no imbalance of power. Partners are free to make decisions together, respect each other's independence, and take individual actions without worrying about the consequences.

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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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The work done in both trials is the same since the boxes are identical in size and mass. However, the power output in the second trial is lower since the person is moving more slowly and therefore exerting less force over a longer period of time.

Power is the rate at which work is done, so when the person moves more slowly in the second trial, the power output decreases even though the work done remains the same. Therefore, the first trial has a higher power output than the second trial. This demonstrates the relationship between work and power, where power is dependent on the amount of work done over a certain amount of time.
In this scenario, the person is moving two identical boxes up the stairs in their new home. We will compare the work and power between the two trials.

1. First box: The person carries the box easily and quickly.
2. Second box: The person is tired and moves more slowly.

In both cases, the work done remains the same, as the person is moving identical boxes up the same stairs, which means that the force and displacement involved are equal. Work can be calculated using the formula:

Work = Force × Displacement × cos(theta)

Here, the force, displacement, and angle (theta) are the same for both boxes. Therefore, the work done is equal.

However, the power exerted in each trial is different. Power is the rate at which work is done, and can be calculated using the formula:

Power = Work / Time

Since the person takes more time to carry the second box due to fatigue, the power exerted is lower in the second trial compared to the first. In conclusion, the work done in both trials is the same, but the power exerted is higher when carrying the first box compared to the second box.

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