An important factor in the rate and magnitude of diffusion of ions is the electrical force produced by the ______..

Solution :

A) Electric current is the flow of electrons .

B) We know, by ohm's law :

V = I × R

Putting given values in above equation, we get :

V = 0.56 × 72 V

V = 40.32 V

Hence, this is the required solution.

Explanation:

Average Velocity = Displacement / Time

= 1.2km / 5 min

= 1200m / 300s

= 4m/s.

The average velocity of a moving body is the distance covered by time. The average velocity of the traveler covers 1.2 km in 5 min is 4 m/s.

Velocity is a physical quantity which measures the distance travelled per unit time. Velocity is a vector quantity thus having both magnitude and direction.

Velocity is the ratio of distance to the time. Given that the distance travelled by the man = 1.2 km = 1200 m

time = 5 min = (5 × 60 s) = 300 s.

Thus, velocity = distance/ time

                       = 1200 m / 300 s

                       = 4 m/s.

Therefore, the velocity of the traveler is  4 m/s.

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(a) df/dz = Vx - iVy

(b) ∇.V = 0

(c) ∇ x V = 0

To show that df/dz = Vx - iVy, we start with the given complex potential f(z) = u(x, y) + iv(x, y). Taking the derivative of f(z) with respect to z, which is a complex variable, we can express it as df/dz = ∂f/∂x * ∂x/∂z + ∂f/∂y * ∂y/∂z. By applying the Cauchy-Riemann equations, we know that ∂x/∂z = 1 and ∂y/∂z = i. Substituting these values and the expressions for ∂f/∂x and ∂f/∂y, we obtain df/dz = (∂u/∂x + i∂v/∂x) * 1 + (∂u/∂y + i∂v/∂y) * i. Simplifying this equation, we get df/dz = Vx - iVy, where Vx and Vy represent the components of the fluid velocity.

To show that ∇.V = 0, we consider the divergence of V. The divergence of a vector field V = (Vx, Vy) is given by ∇.V = (∂Vx/∂x + ∂Vy/∂y). In the context of fluid flow, V represents the velocity field. Since the flow is assumed to be irrotational, there are no sources or sinks in the system. This implies that the fluid is incompressible, and thus, the divergence of the velocity field is zero: ∇.V = 0.

To show that ∇ x V = 0, we examine the curl of V. The curl of a vector field V = (Vx, Vy) is given by ∇ x V = (∂Vy/∂x - ∂Vx/∂y). In the case of irrotational and nonturbulent flow, there are no vortices or circulating motions in the fluid. Therefore, the curl of the velocity field is zero: ∇ x V = 0.

These results indicate that in two-dimensional irrotational fluid flow described by a complex potential, the derivative of the potential with respect to z is equal to the components of the fluid velocity, there are no sources or sinks in the flow field (divergence is zero), and there is no circulation or rotation (curl is zero).

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Answer:

Answer is explained in the explanation section below.

Explanation:

If the conductor has developed the potential difference. It simply means it is charged.

A conductor can be charged in different scenarios, let's discuss some of it and try to deduce the appropriate meaning for this question.

A conductor can be charged due to ions or

A conductor can be charged if it come across any current carrying conductor, so as to gain induced emf.

So, In both of these case, both can be very reasons for its potential difference.

Answer:

Average speed is the total distance traveled divided by the time. Speed takes into account the total path length traveled. Average velocity is the displacement divided by the time. Velocity only takes into account the starting and ending points of an object's path.

Explanation:

Answer:

The second law of thermodynamics states in an isolated system, the entropy (the amount of thermal energy that cannot be converted into mechanical work, also known as the amount of disorder) always increases, therefore, an isolated system always require an external input (new sources) of energy for there to be orderliness or for the available energy of the system to remain constant or increase

Explanation:

67.08 pounds per square inch is the amount of pressure exerted on the ground by the person standing on one foot with a wide and long foot.

To calculate the pressure exerted on the ground due to the weight of a person standing on one foot, we need to consider the person's weight and the surface area of their foot in contact with the ground. The formula for pressure is force divided by area (P = F/A).

Let's assume the person weighs 150 pounds and their foot is 12 inches long and 6 inches wide, giving us a surface area of 72 square inches. To convert pounds to force, we multiply the weight by the acceleration due to gravity, which is 32.2 feet per second squared.

So the force exerted by the person is 150 x 32.2 = 4,830 pounds.

Now we can calculate the pressure by dividing the force by the surface area:

P = 4,830 / 72 = 67.08 pounds per square inch.

Therefore, the pressure exerted on the ground by the person standing on one foot is 67.08 pounds per square inch

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Answer:

I know

Explanation:

it gets filterd out

Answer:

40 degrees Celsius

Explanation:

Have a great summer :)

Answer:

To calculate the amount of Zn that can be deposited at the cathode in the electrolysis of molten ZnCl2, we need to use Faraday's law of electrolysis, which states that the amount of substance deposited at an electrode is proportional to the amount of charge passed through the cell.

The equation for Faraday's law is:

moles of substance = (electric charge passed / Faraday's constant)

where the Faraday's constant is the charge carried by one mole of electrons and is equal to 96500 C/mol.

Now, we can calculate the amount of Zn that can be deposited using the following steps:

Calculate the electric charge passed in one hour:

Electric charge = current × time

Electric charge = 0.01 A × 3600 s = 36 C

Calculate the number of moles of Zn that can be deposited:

moles of Zn = (electric charge passed / Faraday's constant)

moles of Zn = (36 C / 96500 C/mol) = 0.000373 moles of Zn

Calculate the mass of Zn deposited:

mass of Zn = moles of Zn × molar mass of Zn

The molar mass of Zn is 65.38 g/mol

mass of Zn = 0.000373 moles of Zn × 65.38 g/mol = 0.0244 g

Therefore, the amount of Zn that can be deposited at the cathode by the passage of 0.01 ampere for one hour is approximately 0.0244 grams.

Answer:

e.g. means "for example" but is physics is also stands for gravitational potential energy

Answer: D

Explanation: I took the test on A P E X

D. The voltage and resistance would be the same.

If the light bulbs are connected in parallel, the current flowing through the light bulbs combine to form the current flowing in the battery, while the voltage drop is 6.0 V across each bulb and they all glow.

In a series circuit, every device must function for the circuit to be complete.

Electricity needs a path to follow to get from one destination to another. And the journey is always the same:

Power – Electricity always starts from a source, like a battery or an outlet.

A battery is a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction (redox) reaction.

This type of reaction involves the transfer of electrons from one material to another via an electric circuit.

In electronics, a circuit is a complete circular path that electricity flows through. A simple circuit consists of a current source, conductors and a load.

The term circuit can be used in a general sense to refer to any fixed path that electricity, data or a signal can travel through.

Therefore,

If the switch were replaced with a section of wire ,the voltage and resistance would be the same.

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The average rate of energy consumption during the trip is 10 megawatts. The average rate of energy consumption during the trip is 727 kW.

Part A:
First, we need to convert the given values to the appropriate units:
1.\(200 km = 124.27\)miles (1 km = 0.62137 miles)
2. Car's fuel efficiency: 30 miles/gallon
Next, calculate the amount of fuel consumed during the trip:
Fuel consumed = Distance traveled / Fuel efficiency = 124.27 miles / 30 mi/gal = 4.1423 gallons
Now, we can calculate the energy consumed by the car:
Energy consumed = Fuel consumed × Energy per gallon =\(4.1423 gallons × 1.3 × 10^9 J/gal = 5.38 × 10^9 J\)So, the car consumes 5.38 × 10^9 Joules of energy during the trip.
Part B:
To calculate the average rate of energy consumption, we first need to determine the time taken for the trip:
Time taken = Distance traveled / Speed = 124.27 miles / 60 mi/h = 2.0712 hours
Next, calculate the average rate of energy consumption:
Power (Pav) = Energy consumed / Time taken = (5.38 × 10^9 J) / (2.0712 h × 3600 s/h) = 7.27 × 10^5 W
To express the answer in kilowatts (kW), divide by 1000:
\(Pav = 7.27 × 10^5 W / 1000 W/kW = 727 kW\)

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The original Phillips curve implied that there was no such thing as a natural unemployment rate -False.

The original Phillips curve did not imply that there was no such thing as a natural unemployment rate. In fact, the original Phillips curve, proposed by economist A.W. Phillips in the 1950s, suggested an inverse relationship between inflation and unemployment in the short run. According to the original Phillips curve, lower unemployment was associated with higher inflation, and vice versa.

However, the concept of a natural unemployment rate was introduced later by economists such as Milton Friedman and Edmund Phelps. They argued that in the long run, there exists a natural rate of unemployment, sometimes referred to as the non-accelerating inflation rate of unemployment (NAIRU). This natural rate is determined by structural factors in the economy and represents the level of unemployment that is consistent with stable inflation.

Therefore, the original Phillips curve did not address the concept of a natural unemployment rate, but subsequent developments in economic theory recognized its existence.

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Answer:

a semi truck

Explanation:

Coordinates for center of mass of the system are (4/3, 11/6), or approximately (1.333, 1.833)

The center of mass of a system of particles is given by the weighted average of the positions of the particles, where the weights are the masses of the particles.

Let's denote the three masses as m1, m2, and m3, with positions r1, r2, and r3, respectively. Then the center of mass position, rcm, is given by:

rcm = (m1r1 + m2r2 + m3*r3) / (m1 + m2 + m3)

We are given the positions of the three masses in meters, so we can write:

m1 = ?, r1 = (1.25, 3)

m2 = ?, r2 = (2, 2)

m3 = ?, r3 = (0.75, 0.5)

To find the masses, we need additional information. Let's assume that the masses are equal, so that m1 = m2 = m3 = m. Then the center of mass position becomes:

rcm = (m*(1.25, 3) + m*(2, 2) + m*(0.75, 0.5)) / (3m)

Simplifying the expression by factoring out m, we get:

rcm = (1/3)*[(1.25, 3) + (2, 2) + (0.75, 0.5)]

Adding the vectors inside the parentheses, we get:

rcm = (1/3)*(4, 5.5)

Therefore, the coordinates of the center of mass of the system are (4/3, 11/6), or approximately (1.333, 1.833)

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Answer:

Explanation:

we know that density =m/v

for mass the equation become

m=d*v

m=2700*54.3

m=146610

m=14.6*10^4

The second sine wave is shifted 360.4° ahead of the first sine wave.

A sine wave is a type of waveform, or a periodic oscillation, with a shape that follows the mathematical sine function. It is one of the fundamental waveforms and has a distinctive, smooth curve that repeats itself over intervals of time. It is commonly used in mathematics, physics, engineering, and other fields.

The phase shift between two sine waves is calculated by multiplying the time delay by the angular frequency of the sine wave. Therefore, in this case the phase shift is calculated as follows:

Phase shift = 0.2ms * (2π * 500 Hz)

= 0.2ms * (3141.6 rad/s)

= 628.32 rad.

This result can also be expressed in degrees by multiplying the result by 180/π, which gives a phase shift of 360.4°.

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Answer: A. An ice hockey player picks up a trophy as he slides past it

Explanation:

A PE X

The statement that best describes a perfectly inelastic collision is

C. A surfer falls off of his surfboard when a wave hits him.

A collision is the interaction between two bodies in such a way that the momentum and velocity of one body gets changed due to the presence of other body. There are three types of collision-

1. Elastic collision

2. Inelastic collision

3. Perfectly inelastic collision.

In all types of collision , the momentum of the system before collision and after collision always remains same or we can say that momentum is conserved in collisions

An elastic collision is the one in which kinetic energy is also conserved and coefficient of restitution is one. Both the bodies move separately with different velocities after elastic collision.

In inelastic collision  there is a loss of kinetic energy and coefficient of restitution is less than one.

In perfectly inelastic collision there is maximum loss of kinetic energy and coefficient of restitution is zero. Both the bodies stick together after collision and move with same velocity

Coefficient of restitution is the  ratio of  relative velocity of separation after collision to relative velocity of approach before collision.

A surfer falls of his surfboard when a wave hits him is an example of perfectly inelastic collision because in this when water hits the surfers he falls of and sticks to the water , and will also now move with the velocity of water .

So  when the surfer falls off his surfboard when a wave hits him is perfectly inelastic collision.

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As the given statement is False. As a substance that heats up relatively quickly must has a high specific heat capacity.

A physical property of matter is specific heat capacity. The quantity of heat energy required to raise a substance's temperature per unit of mass is known as the specific heat capacity. It serves as an illustration of a large property. Since the scale of the system under study directly affects it. Therefore, it is the amount of heat absorbed by the substance per unit mass when its temperature is elevated. Specific Heat Capacity is measured in J/(kg K) or J/(kg °C) units.

As heating is quick when the substance have high specific heat capacity and the heating will be slow when the substance have less specific heat capacity.

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Answer:

Explanation:

The resistance of a material is expressed as R = ρL/A

Volume of the original material V = Area * Length = A*L

ρ is the resistivity of the material

R is the resistance

A is the cross sectional area

L is the length of the wire.

If the wire is stretched o twice its original length then new length of the wire L₂ = 2L. Note that an increase in the length of wire will affect its area but its volume and density will not change.

This means V = V₂

A*L = = A₂*L₂

A*L = A₂*(2 L)

A = 2 A₂

A₂ = A/2

The new resistance of the material Rf = ρL₂/A₂

R₂ = ρ(2 L)/(A/2)

Rf =  2ρL * 2/A

Rf = 4(ρL/A)

Since R = ρL/A

R₂ = 4R

Hence, the resistance of the stretched wire will be four times that of the original wire.

If the wire is stretched to twice its original length, the new resistance would be quadrupled.

The resistance (R) of a wire is given by:

\(R=\rho\frac{L}{A} \\\\where\ L\ is\ length\ of\ wire, A\ is\ the\ cross\ sectional\ area\ and\ \rho\ \\is\ the\ resistivity\)

Since the wire is stretched, the new length (L₁) is twice its original length, hence:

L₁ = 2L

An increase in length affects the area, the new area (A₁) is:

initial volume = volume after stretch

AL = A₁L₁

AL = A₁(2L)

A₁ = A/2

The resistance of the stretched wire (R₁) is:

\(R_1=\rho\frac{L_1}{A_1} \\\\R_1=\rho\frac{2L}{A/2} \\\\R_1=4\rho\frac{L}{A}=4R\)

Therefore if the wire is stretched to twice its original length, the new resistance would be quadrupled.

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Answer:

Height

Explanation:

the more height the more gravitational energy

Answer: malleability

Explanation:

Answer:

trust the process

Explanation:

quadratic formula, use synthetic division also use the p-q method for the roots and factoring.

The mass of the object attached to the spring is approximately 0.119 kg.

To determine the mass of the attached object using the spring, we can utilize Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Hooke's Law can be expressed as:

F = k * x

Where:

F is the force exerted by the spring,

k is the spring constant, and

x is the displacement of the spring from its equilibrium position.

The frequency of the spring's motion (f) can be related to the mass (m) and the spring constant (k) using the equation:

f = (1 / (2π)) * √(k / m)

Rearranging this equation, we can solve for the mass:

m = (k / (4π² * f²))

Given:

Spring constant (k) = 3 N/m

Frequency (f) = 0.8 Hz

Substituting these values into the equation, we get:

m = (3 N/m) / (4π² * (0.8 Hz)²)

Calculating this expression:

m ≈ 0.119 kg

Therefore, the mass of the object attached to the spring is approximately 0.119 kg.

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The mass attached to the spring is approximately 0.238 kg.

To find the mass attached to the spring, we can use the formula for the angular frequency (ω) of a mass-spring system:

ω = √(k / m),

where ω is the angular frequency, k is the spring constant, and m is the mass.

Given:

k = 3 N/m (spring constant),

f = 0.8 Hz (frequency).

First, let's convert the frequency from Hz to radians per second (rad/s):

ω = 2πf = 2π(0.8) ≈ 5.03 rad/s.

Now, we can solve the formula for m:

ω = √(k / m),

m = k / ω^2,

m = 3 N/m / (5.03 rad/s)^2.

Calculating the value:

m ≈ 3 N/m / (5.03 rad/s)^2 ≈ 0.238 kg.

Therefore, the mass attached to the spring is approximately 0.238 kg.

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Given:

ratio of energy is 2√2 : √3

Apply:

Where:

q = charge of proton

v= speed of proton

r= radius of circular path

T= time period of revolution

Kinetic energy (K)

K= 1/2mv^2

From both equations:

Tα1/k

K1:K2 = 2√2 : √3

T1:T2 = √3:2√2

Answer: √3:2√2

Explanation:

TRUE - Two colliding objects will exert equal forces upon each other. If the objects have different masses, then these equal forces will produce different accelerations. ... FALSE - In any collision, the colliding objects exert equal and opposite forces upon each other as the result of the collision interaction.

Vertical distance from the point of observation on the Earth's surface to the point being measured. Altitude: Vertical distance from mean sea level to the point being measured.

gravitational potential energy = mass * acceleration due to gravity * height

gravitational potential energy = 55 * 9.8 * 370

gravitational potential energy = 539 * 370

gravitational potential energy = 199,430

Hence the total change in the skier's gravitational potential energy is 199,430Joules.

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Multiple regression designs can help establish relationships between multiple independent variables and a dependent variable, whereas longitudinal designs can help establish patterns of change or stability over time.

Multiple regression designs are useful for examining the relationship between multiple independent variables and a single dependent variable. They allow researchers to assess the unique contributions of each independent variable while controlling for the effects of other variables. By analyzing the strength and significance of these relationships, researchers can establish associations and make predictions about the dependent variable.

On the other hand, longitudinal designs are valuable for studying patterns of change or stability over time. These designs involve collecting data from the same participants at multiple time points, allowing researchers to track and analyze developments over an extended period. Longitudinal studies enable researchers to explore how variables may vary or remain consistent across time, providing insights into the temporal aspects of phenomena and establishing causal relationships.

Multiple regression designs and longitudinal designs offer distinct advantages in addressing different research questions. While multiple regression designs focus on understanding relationships between variables, longitudinal designs provide insights into changes and trends over time. By employing these research designs appropriately, researchers can enhance their understanding of complex phenomena and contribute to the advancement of knowledge.

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