How much work is done by a person who used a force of 27.5N to move a grocery cart 12.3

(a) The magnetic field in the solenoid is 0.048 T. (b) The energy density is 1.38 × 10⁻⁶ J/m³. (c) The total energy in the coil's magnetic field is 0.167 J. (d) The inductance of the solenoid is 1.63 × 10⁻⁴ H.

(a) The magnetic field in the solenoid can be calculated using the formula: Magnetic field in the solenoid, B = μ₀NI/l

l is the length of the solenoid,

A is the area of the cross-section of the solenoid,

N is the number of turns of the solenoid wire,

I is the current flowing through the solenoid

Substituting the given values, we get:

B = (4π×10⁻⁷ T m/A)(460 turns)(90 A)/(0.24 m)

B = 0.048 T

(b) The energy density in the magnetic field if the solenoid is filled with air can be calculated using the formula:

Energy density in the magnetic field, u = ½μ₀B²

u is the energy density in the magnetic field

B is the magnetic field of the solenoid

Substituting the given values, we get

u = ½ (4π×10⁻⁷ T m/A) (0.048 T)²

u = 1.38 × 10⁻⁶ J/m³

(c) The total energy contained in the coil's magnetic field (assuming that the field is uniform) can be calculated using the formula:

Total energy contained in the coil's magnetic field, U = ½L I²

L is the inductance of the solenoid,

I is the current flowing through the solenoid

Substituting the given values, we get

U = ½(μ₀n²A l) I²

U = ½(4π×10⁻⁷ T m/A) (460 turns)² (0.540 cm²) (0.24 m) (90 A)²U = 0.167 J

(d) The inductance of the solenoid can be calculated using the formula:

Inductance of the solenoid, L = μ₀n²A l / L

μ₀ is the permeability of free space

N is the number of turns of the solenoid wire

I is the current flowing through the solenoid

Substituting the given values, we get

L = (4π×10⁻⁷ T m/A) (460 turns)² (0.540 cm²) (0.24 m) / (0.24 m)L = 1.63 × 10⁻⁴ H

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Answer:

thatss deeeeepppp

Explanation:

xjdjdjfjd

A box exerts a force of 420 N on a floor. If the square box measures 0.5 m on each side. Pressure does it place on the floor is 1680 N/m².

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Pressure is force per unit area so,

pressure = 420/.25

pressure = 1680 N/m²

A box exerts a force of 420 N on a floor. If the square box measures 0.5 m on each side. Pressure does it place on the floor is 1680 N/m².

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The direction of the magnetic force on the positive charge is to the right. Therefore, the correct answer is (d) to the right.

To determine the direction of the magnetic force on a positive charge entering a uniform magnetic field, we can use the right-hand rule for magnetic force.

If we point the thumb of our right hand in the direction of the velocity of the positive charge, and align our fingers with the magnetic field lines (in the direction of the field), then the palm of our hand will indicate the direction of the magnetic force.

In the given scenario, the positive charge is moving in the downward direction, and the magnetic field is directed into the page (represented by the x's in the figure).

Using the right-hand rule, if we point our thumb downward to represent the velocity and align our fingers into the page to represent the magnetic field, the palm of our hand will face to the right. Therefore, the direction of the magnetic force on the positive charge is to the right.

Therefore, the correct answer is d) to the right.

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Answer:

\( s = ut + \frac{1}{2} a {t}^{2} \\ u = 0 \\ a = 4.2 \: m {sec}^{ - 2} \\ t = 10sec \\ s = 0 + \frac{1}{2} (4.2) {10}^{2} \\ = 1.2 \times 100 \\\boxed{ s = 120 \: m}\)

Answer: Flying into the wind provides more lift, but reduces the plane's “ground speed”, the speed of the plane relative to the ground hope this helps

Each element in group 2 of the periodic table is option c.Each element is an alkaline earth metal.

Group 2 elements, also known as the alkaline earth metals, include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). These elements share common properties such as having two valence electrons, being relatively reactive, and having similar chemical behavior.

They are shiny, silvery-white metals that are less reactive than the elements in group 1 (alkali metals) but more reactive than most other elements. They are typically found in nature as compounds rather than in their pure elemental form.

Option A is incorrect because group 2 elements have two valence electrons, not eight, in their outer energy level. Option B is incorrect for the same reason, as group 2 elements have two valence electrons, not six.

Option D is incorrect because halogens belong to group 17, not group 2. Option E is incorrect because the physical properties described (dull, brittle, and breaks easily) do not apply to group 2 elements, but rather to some other groups of elements.The correct answer is c.

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Answer:

i dont know about this

Explanation:

Answer:

The average temperature is much warmer

Explanation:

The gravitational force exerted on the moon while it is in orbit around the planet is 1 × 10¹⁹ N.

Gravitational Field Strength is defined as the gravitational force per unit mass experienced by a point mass at a certain point.  It is  a vector quantity having SI unit Newton/kg.

Mass of the moon: M = 1 ×10²² kg.

The gravitational field strength at a distance r from the planet is: E= 0.001 N/kg.

Hence, gravitational force acting on the moon: F = mE

= 1 ×10²² × 0.001 N

= 1 × 10¹⁹ N.

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Explanation:

V=u+at

a=v-u) /t

A=5-20)10

a=15/10

a=1.5ms^2

If a truck begins with a velocity of 20. meters per second east and changes its velocity to 5.0 meters per second east in 10.0 seconds, then the truck's rate of acceleration would be  1.5 meters / second².

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem If a truck begins with a velocity of 20. meters per second east and changes its velocity to 5.0 meters per second east in 10.0 seconds,

The initial velocity of the truck = 20. meters per second

The final velocity of the truck =  5.0 meters per second

Time period = 10.0 seconds

By using the first equation of the motion,

v = u + at

5= 20+ 10a

a = 20-5/-10

a = -1.5 meters / second²

Thus, the acceleration of the truck would be -1.5 meters / second².

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A system which undergoes an adiabatic change. The work done and the change in the internal energy are: W>0,  AE > 0 (option d)

Adiabatic process is a thermodynamic process in which no heat goes into or out of a system and all internal energy is changed by work.

Adiabatic operations are frequently carried out in an insulated container, where the process occurs too quickly for heat to be transferred. Because heat transfers due to a temperature difference between a system and its surroundings, an adiabatic process can occur even when the system is in thermal equilibrium.

The first law of thermodynamics is:

ΔU = Q + W

Where:

ΔU = change in internal energy

Q = heat transfer

W = work done

In the given problem, the internal energy is represented by AE, hence, we can write:

AE = Q + W

Since there is no change in heat energy, Q = 0, therefore,

AE = W

The work done in an adiabatic process is positive. Therefore, the correct answer is W>0,  AE > 0 (option d)

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The increase in kinetic energy required to raise the speed of the electron from 0.81c to 0.91c is 0.023 joules

The kinetic energy of a particle can be found using the equation:

K = (gamma - 1) * m_0 * c^2

where K is the kinetic energy,

m_0 is the rest mass of the particle,

c is the speed of light, and

gamma is the Lorentz factor given by:

gamma = 1 / √(1 - (v/c)^2)

We have that the initial speed of the electron is v1 = 0.81c,

we can find the initial kinetic energy:

K1 = (gamma1 - 1) * m_0 * c^2

gamma1 = 1 / √t(1 - (v1/c)^2)

K1 = (gamma1 - 1) * m_0 * c^2

K1 = (1 / √(1 - (0.81)^2) - 1) * m_0 * c^2

Hence we find the final speed v2 = 0.91c,

the final kinetic energy K2 = (gamma2 - 1) * m_0 * c^2

gamma2 = 1 / √(1 - (v2/c)^2)

K2 = (gamma2 - 1) * m_0 * c^2

K2 = (1 / √(1 - (0.91)^2) - 1) * m_0 * c^2

In conclusion, we subtract the initial kinetic energy from the final kinetic energy to find the increase in kinetic energy:

dK = K2 - K1

dK = (1 / √t(1 - (0.91)^2) - 1) * m_0 * c^2 - (1 / √t(1 - (0.81)^2) - 1) * m_0 * c^2

dK = 0.023 joules

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Answer:

180 because it's half of a full rotation before they shoot the other person.

Answer:

C. Law Of Conservation Of Mass

Explanation:

In this scenario, this would occur due and is explained by the Law of Conservation of Mass. This law basically states that the mass that exists during and after a chemical reaction must remain the same, assuming that the reaction is taking place in a closed environment where no loss of mass is occurring. This means that if the reaction is in a closed environment the mass should not change whatsoever even if it is not in the same form or substance as it was before the reaction occurred.

The new force acting between the charges in terms of F is k * \(\frac{q1^{2}q2^{} }{2d^{2} }\)

Force can be defined as the an agent that orchestrate a pull or push between two subject matter.

Force is very important to every physicist and the study of physics and it has been defined by different means and different scientist

In conclusion, The new force acting between the charges in terms of F is k * \(\frac{q1^{2}q2^{} }{2d^{2} }\)

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Answer:

1.A

2.C

3.B

4. i.dk about that one

Explanation:

1. It is true that Tracking your exercise can help you stick with an exercise routine.

2. Yes, it is best to do as many different kinds of exercise as possible.

3. Building muscle strength helps with all aspects of fitness

4. Yoga would be the best exercise to achieve this goal.

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.

Thus, exercise is very necessary for health.

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Answer:

TEJ as this is a thing you wont get

Answer:

the answer is c. hope this help you out

answer:

click on the picture, hope it helps

The magnitude of the electric field at that location is is 40  N.C⁻¹.

The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.

Electric charge or magnetic fields with variable amplitudes can produce an electric field.

Given parameters:

Charge of the positive test charge, q =  5.0x10⁻⁶ C.

Electric force exerted by the electric field, F = 2.0x10⁻⁴ N.

Then, electric field at the position, E = F/q

= 2.0x10⁻⁴ / 5.0x10⁻⁶ N.C⁻¹.

= 40  N.C⁻¹.

Hence,  the magnitude of the electric field at the location of the test charge is 40  N.C⁻¹.

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Answer:

A) D, ABC

B)AC, DB

is the correct answer

For the accelerations, we need to compare the forces applied to each box.

A) 10N<5kg>5N<10N
B) 15N<10kg>10N
C) 15N<5kg>10N
D) 20kg>15N<5N

The net force on the boxes is equal to the mass of the box multiplied by its acceleration. Since the table is friction-free, there is no force opposing the motion of the boxes.
Therefore, the box with the greatest mass will have the greatest net force acting on it, as F = ma. The boxes with the greater forces applied to them will have greater accelerations.


To rank the options from greatest to least net force, we simply need to compare the masses of the boxes. For the accelerations, we need to compare the forces applied to each box.

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The amount of work required to lift the object is 1029 J. And the amount of potential energy gained by the object is 1029 J.

Work can be defined as the product of force and distance. The s.i unit of work is Joules (J).

To calculate the amount of work required to lift the object, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

The amount of gravitational potential energy gained by the object is the same s the amount of work required to lift the object

Therefore,

Hence, The amount of work required to lift the object is 1029 J. And the amount of potential energy gained by the object is 1029 J.

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The motion of the particles in this kind of wave will be option C that is The particles will move side to side over small areas.

A wave can be described as a disturbance that travels through a medium from one location to another location.

When Marcus plucks an outstretched coil, the coli sets into wave like motion that is oscillates to and fro. The particles of the medium do not move along the wave but just vibrate sideways about a fixed position.

The particles would move side to side over very small areas. Such type of wave is known as a mechanical wave. A Sound wave is a mechanical wave.

The particles vibrate in the direction of the motion of the wave. The wave carries forward the energy.

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Answer:

C is the correct answer. :)

Explanation:

a) The greenhouse effect refers to the process by which certain gases in the Earth's atmosphere trap and re-emit heat from the sun, leading to a warming effect on the planet's surface.

These gases, including carbon dioxide, water vapor, methane, and others, act like a blanket around the Earth, absorbing and trapping the sun's radiation and preventing it from escaping into space.

b) Atmospheric water vapor is a key component of the Earth's climate system, as it plays a crucial role in the greenhouse effect. As water vapor absorbs and re-emits radiation from the sun, it helps to trap heat in the atmosphere and keep the planet warm.

However, the amount of water vapor in the atmosphere is strongly influenced by temperature and other factors, which can in turn affect climate patterns and weather events.

c) The increased concentration of carbon dioxide in the atmosphere changes the climate because it enhances the greenhouse effect. Carbon dioxide is a particularly potent greenhouse gas, as it absorbs and re-emits radiation across a range of wavelengths, effectively trapping more heat in the atmosphere. As humans burn fossil fuels and engage in other activities that release carbon dioxide into the air, the concentration of this gas increases, leading to a buildup of heat-trapping gases and a corresponding increase in global temperatures.

d) The melting of continental glaciers and sea ice in polar regions can accelerate the rise in temperature through a process known as positive feedback. As the ice melts, it exposes more land and water, which in turn absorb more solar radiation and heat up. This leads to further melting, which exposes even more land and water, and so on.

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Answer:  metals, non metals and semi metals

Explanation:

As a result, the racer's final velocity is 13.00 m/s after accelerating at 0.500 m/s2 for 7.00 s.

Velocity is a vector representation of an object's or particle's displacement with respect to time. The meter per second (m/s) is the standard unit of velocity magnitude (also known as speed). Alternatively, velocity magnitude can be expressed in centimeters per second (cm/s). The direction of movement of the body or item is defined by velocity. Speed is fundamentally a scalar number. Velocity is, in essence, a vector quantity. It is the pace at which distance changes. It is the displacement rate of change.

Here,

The final velocity can be found using the equation of motion,

vf = vi + at,

where vf is the final velocity, vi is the initial velocity (11.5 m/s), a is the acceleration (0.500 m/s^2), and t is the time for which the acceleration was applied (7.00 s).

Substituting the values we get,

vf = 11.5 + 0.500 * 7.00 = 13.00 m/s.

So, the racer's final velocity is 13.00 m/s as he accelerates at the rate of 0.500 m/s2 for 7.00 s.

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Answer:

1.5 m\s Ans ......

Explanation:

Data:

f = 0.5 Hz

w = 3 m

v = ?

Formula:

v = fw

Solution:

v = (0.5)(3)

v = 1.5 m\ s Ans ........

Answer:

You dont need BRAINLY there is an app called slader where you scan the textbook barcode and it shows you the answers for the question in the textbook.

Explanation:

Answer:

A force is a push or pull upon an object resulting from the object's interaction with another object.

Explanation:

Answer:  force is a push or pull upon an object resulting from the object's interaction with another object.

Explanation: Hope this helps and it also on googIe