Compare and contrast the ways magnetic poles interact with the ways
electric charges interact

PLEASE HELP ME .

Answer:

Density = 1027.3 [kg/m3]

Explanation:

To solve this problem we must use the concept of density which is defined as the relationship between mass and volume, which can be determined by the following equation.

density = m/v

m = mass = 308.19 [gramm] = 0.30819 [kg]

v = volume = 300 [mL] = 0.3 [Lt] = 0.0003 [m3]

density = (0.30819/0.0003)

density = 1027.3 [kg/m3]

The formula for the covalent compound dichlorine Heptoxite is CL2O6.

Name the first element first then name the second element using the element name stem and the ide suffix. If there are multiple atoms of the first element use the numeric prefix. Always use a numeric prefix for the atomic number of the second element. Dichloroheptoxide is a compound of a clear oily liquid. It is a strong oxidizing agent.

The hardness of a diamond can be read from its crystal structure. Each carbon atom is bound to four other carbon atoms by covalent bonds in a regular tetrahedral structure. Each of these bonded carbon atoms is then further bonded to three other carbon atoms. In the semiconductor industry, chlorine trifluoride is used to clean chemical vapor deposition chambers. Advantageously the semiconductor material can be removed from the chamber walls without the need to dismantle the chamber.

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The correct answer is A. Larger diameter tires because they have more friction so you won't slide off the road.

When a vehicle is moving at high speeds, the centripetal force on the tires can be very high, causing stress on the tires. One way to reduce this stress is by using larger diameter tires. Larger diameter tires have a larger contact area with the road, which increases the amount of friction between the tire and the road. This increased friction helps to prevent the tires from sliding off the road, reducing the stress on the tires. Additionally, larger diameter tires also have a larger circumference, which means that they can cover more distance with each rotation, reducing the number of rotations needed to travel a given distance and thereby reducing the stress on the tires.

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The final momentum of the skater is 3.77 m/s.

Momentum is the product of mass and acceleration. Recall that the principle of conservation of linear momentum states that total momentum before collision must equal the total momentum after collision.

Thus;

(50 Kg × 0 m/s) + (55Kg ×  7.2m/s) = (50 Kg + 55Kg) v

v =  (55Kg ×  7.2m/s)/(50 Kg + 55Kg)

v = 396/105

v = 3.77 m/s

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Answer: Speed of light in air is more than speed of light in water, which means water is optically denser than air.

Answer:

There

Explanation:

A medium is denser when the speed of light gets reduced when light travels through that medium. When water travels through water, its speed gets reduced. Hence, it is a optically denser medium. Speed of light in air is more than speed of light in water, which means water is optically denser than air.

High-frequency rTMS and low-frequency rTMS are believed to stimulate and inhibit, respectively, activity within those brain regions to which it is applied.

rTMS stands for Repetitive transcranial magnetic stimulation.

It is a safe, harmless and non-invasive method that is used to treat brain activities by controlling the brain stimuli.

Depressed and anxious patients suffer from brain diseases and exhibit different levels of brain activities leading to the release of stimuli in high and low amounts.

However, it is a widely used technique that is differentiated into high and low-frequency rTMS.

Low-frequency rTMS has a value of less than 1 Hz and exhibits inhibitory effects while high-frequency value exceeds 5 Hz and exhibits excitatory effects.

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Answer:

Range

Explanation:

The total energy of a system (rated energy) can be misleading since you can only use a portion of the battery's energy during operation. The useable energy of a battery is the range at which the battery can operated over a SOC range.

The notch sensitivity and fatigue stress concentration factors for the bar are calculated to determine the mean and alternating stresses and find the fatigue strength for different cycles.

To calculate the notch sensitivity and fatigue stress concentration factors, we need to consider the presence of the 10 mm hole in the center of the 30 mm side of the bar. The notch sensitivity factor quantifies the effect of the hole on the stress concentration, while the fatigue stress concentration factor determines the increase in stress due to cyclic loading.

The mean stress (σm) is the average of the minimum (F_min) and maximum (F_max) axial loads applied to the bar. The alternating stress (σa) is half the difference between F_max and F_min.

The fatigue strength for a certain number of cycles is determined by applying the appropriate factors to the ultimate tensile strength (S_Ut) or yield strength (S_y) of the material. The fatigue strength is typically given for a specified number of cycles, such as 100, 10,000, 100,000, or 1,000,000 cycles. The fatigue strength for infinite life refers to the stress level below which the material can withstand an unlimited number of cycles without failure.

To provide accurate values for the notch sensitivity, fatigue stress concentration factors, mean and alternating stresses, and fatigue strength for the specified number of cycles, further calculations and data specific to the material properties and geometry of the bar are required.

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Answer:

the orbits of the planets are elliptical

the sun is the center of the solar system

includes 9 planets

Explanation:

A the magnetic fields between the north poles repel each other

Explanation:

the correct answer is A

hpoe it help u

Answer:

51.02m

Explanation:

KE = 1/2mv2

Where k.e = 250J

mass = 0.5 kg

g = 9.8 m/s2

250= 1/2×0.5×v^2

250= 0.5×0.5×v^2

250= 0.25v^2

v^2 = 250/0.25

v^2 = 1000

v =√1000

v = 31.62m/s

v^2= u^2-2gh........... (1)

Since the object will stop at it highest point, hence it final velocity there will be zero and since it is moving up against the gravity g= -9.8m/s^2. That was why the formula in equation 1 has a negative sign

From h = u^2/2g

Where v = 31.62m/s

g = 9.8m/s^2

H = (31.62m/s)^2/9.8×2

H= 1000/19.6

= 51.02m

Hence the height of it travelling will be

51.02m

When substances change state, the molecules remain the same and there is no change in mass. This is because the molecules themselves do not break apart or form new chemical bonds.

Molecules are particles made up of two or more atoms that are bound together. They are the smallest units of matter that can still retain the properties of the substance they are part of. For example, water is made up of two hydrogen atoms and one oxygen atom, which form a molecule. Molecules vary in size and complexity; some molecules, such as proteins, are made up of hundreds of atoms. Molecules are held together by chemical bonds, which are forces of attraction between the atoms. These bonds can be of several different types, such as covalent, ionic, and hydrogen bonds. Molecules can interact with each other and with other substances, such as solids, liquids, and gases, to create new substances with different properties. Understanding the behavior of molecules is essential to the study of chemistry, biology, and other sciences.

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Answer:

1.emit

2.absorb

3.reflect

not sure of the last one..hopes this helps : )

Explanation:

Emission nebulae emit light. Dark nebulae absorb visible radiation and reflect non-visible radiation.

Nebulae are distinguishable space regions of interstellar dust as well as a gas where stars are created.

Emission nebulae emit a kind of ultraviolet light from space that strikes ions in a nebula, driving the ions to emit visible light at different frequencies.

Dark nebulae form as a result of interstellar clouds with high dust concentrations and do not emit visible radiation. They usually absorb visible radiation and reflect non-visible radiation

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Answer:

The rays do not polarize after reflection. The rays are dispersed after reflection. The rays are polarized after reflection.

Answer:

Yes. Space is somewhat voidless. Space has no atmosphere, just planets, stars, and dark matter. Space can be said to be special. Space never ends. Gravity would cause an object to fall down. However, since space never ends, an object could continue moving forever.

At an altitude 400 km (250 miles) above the Earth, gravity is nearly 90 % as strong as on the surface of the earth.

The gravity of Earth can be described as the net acceleration that is imparted to objects due to the combined effect of gravitation and centrifugal force. It can be defined as a vector quantity, whose direction coincides with a plumb bob and strength or magnitude.

In SI units gravitational acceleration is expressed in meters per second squared or equivalently in newtons per kilogram. Near Earth's surface, the gravity acceleration is approximately 9.81 m/s², ignoring the effects of air resistance.

The gravity of the earth decreases with altitude rises above the Earth's surface because of the greater distance from the Earth's center. At an altitude of 400 kilometers equivalent to an orbit of the ISS, gravity is nearly 90% as strong as at the Earth's surface.

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The two pieces of paper land on the moon's surface at the same time because they are both subject to the same gravitational force.

The force of gravity is determined by the mass of the object and the distance between it and the center of the celestial body. On the moon, the force of gravity is weaker than it is on Earth, but it is still strong enough to cause objects to fall toward the surface.

The shape of the paper, whether crumpled or folded into an airplane, has no effect on the force of gravity acting on it. In the absence of air resistance, all objects, regardless of their mass, shape, or size, will fall at the same rate in a vacuum.

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Answer:

100.4°F

Explanation:

F = (9/5)C + 32

F = (9/5)(38) + 32 = (342/5) + 32 = 100.4°F

Fahrenheit is a temperature scale where the freezing point of water is 32 degrees and the boiling point is 212 degrees. 38 Celsius fever in Fahrenheit is 100.4 F

What is Fahrenheit?

Fahrenheit is a temperature scale where the freezing point of water is 32 degrees and the boiling point is 212 degrees. It is commonly used in the United States and some parts of the world, while other countries use the Celsius temperature scale. The Fahrenheit scale was created by German physicist Daniel Gabriel Fahrenheit in 1724. The scale is named after him. To convert from Celsius to Fahrenheit, use the formula F = (9/5)C + 32, where C is the temperature in Celsius and F is the temperature in Fahrenheit. To convert from Fahrenheit to Celsius, use the formula C = (5/9)(F-32). Fahrenheit is still used in science, medicine, and some industrial applications. It is also used by meteorologists and to report temperatures in the United States.

38 Celsius fever in Fahrenheit = 100.4 F38 Celsius = 100.4 Fahrenheit 38 Celsius x (9/5) + 32 = 100.4 Fahrenheit

Therefore, 38 Celsius fever in Fahrenheit = 100.4 F

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When the mirror is moved so that the tree is between the focus point F and the mirror, the image appears shorter and on the same side of the mirror.This happens because of the phenomenon known as Reflection of Light. The mirror reflects light in such a way that it appears as if the light is coming from behind the mirror.

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To maintain the original flux, induced current is in the direction of original current. Hence, potential difference will increase in the direction of current.

In the direction of the electric field, electric potential decreases because electric potential is the work done against the direction of electric field.

The direction of an electric current is the direction in which a positive charge would move and electric current flows from higher to lower electric potential.

If a charge is moving in the direction that it would normally move, then its electric potential energy is decreasing. If a charge is moved in a direction opposite to that it would normally move, then its electric potential energy is increasing.

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The brass pendulum will lose or gain approximately 0.0015 seconds per day when the temperature of its surroundings rises from 10°C to 35°C

The time period of a pendulum is given by the formula:

T = 2π√(L/g)

where T is the time period, L is the length of the pendulum, and g is the acceleration due to gravity.

Since both pendulums have the same length and are located in the same gravitational field, their time periods are equal. Therefore, the time gained or lost by the brass pendulum due to the change in temperature can be calculated using the following formula:

ΔT = T × α × ΔT

where ΔT is the change in temperature, α is the coefficient of linear expansion of brass, and T is the original time period.

The coefficient of linear expansion of brass is approximately 19 × 10^-6 /°C.

Substituting the values given in the problem, we get:

ΔT = T × α × ΔT

= (2π√(L/g)) × (19 × 10^-6 /°C) × (35 - 10) °C

= 2π√(L/g) × (0.000019) × (25) °C

= 2π√(L/g) × 0.000475

Assuming a standard pendulum length of 1 meter, the time gained or lost by the brass pendulum can be calculated as follows:

ΔT = 2π√(L/g) × 0.000475

= 2π√(1/9.81) × 0.000475

≈ 0.0015 seconds

Therefore, the brass pendulum will lose or gain approximately 0.0015 seconds per day when the temperature of its surroundings rises from 10°C to 35°C.

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The power developed by the bicyclist while climbing a hill at a constant speed of 2.5 m/s by applying an average force of 85 N is approximately 212.5 W.

Given:Mass of the bicyclist, m = 45 kg. Speed of the bicyclist, v = 2.5 m/sAverage force applied by the bicyclist, F = 85 NPower is given by the formula:

P = Fv = 85 N × 2.5 m/s = 212.5 W.

The power of an object is the rate at which energy is transferred or work is done.

In this problem, we can calculate the power developed by the bicyclist by multiplying the force applied and the speed at which the bicyclist is moving.

The mass of the bicyclist is given as 45 kg and the speed at which the bicyclist is moving is given as 2.5 m/s.

The average force applied by the bicyclist is 85 N. Using the formula for power,

we can calculate that the bicyclist develops approximately 212.5 watts (W) of power.

Therefore, the power developed by the bicyclist while climbing a hill at a constant speed of 2.5 m/s by applying an average force of 85 N is approximately 212.5 W.

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Answer:

False

Explanation:

A Larger pulse with more energy means that the wave has a large amplitude. As in the given question, both the waves are travelling in the same medium, hence their speeds will remain the same and therefore the larger pulse will not overtake the smaller pulse. Remember the amplitude of a wave does not affect the speed at which the wave travels.

A mathematical function known as a vector function gives each point in a specified domain a vector. It is an extension of scalar functions, which give each point a scalar value.

To calculate the divergence and curl of the given vector functions, we will evaluate them component-wise.

1. For V = YÊ + xỹ + YZÊ + xzỹ + xyż:

Divergence (div V):

The divergence of a vector function V = Vxî + Vyĵ + Vzƙ is given by ∇ · V = (∂Vx/∂x) + (∂Vy/∂y) + (∂Vz/∂z).

Here, Vx = Y, Vy = xỹ, Vz = YZÊ + xzỹ + xyż.

∂Vx/∂x = 0

∂Vy/∂y = 0

∂Vz/∂z = 0

Therefore, the divergence of V is:

∇ · V = (∂Vx/∂x) + (∂Vy/∂y) + (∂Vz/∂z) = 0 + 0 + 0 = 0.

Curl (curl V):

The curl of a vector function V = Vxî + Vyĵ + Vzƙ is given by ∇ × V = (∂Vz/∂y - ∂Vy/∂z)î + (∂Vx/∂z - ∂Vz/∂x)ĵ + (∂Vy/∂x - ∂Vx/∂y)ƙ.

Here, Vx = Y, Vy = xỹ, Vz = YZÊ + xzỹ + xyż.

∂Vz/∂y - ∂Vy/∂z = (0 - 0)î + (0 - 0)ĵ + (0 - 0)ƙ = 0.

∂Vx/∂z - ∂Vz/∂x = (0 - 0)î + (0 - 0)ĵ + (0 - 0)ƙ = 0.

∂Vy/∂x - ∂Vx/∂y = (0 - 0)î + (0 - 0)ĵ + (0 - 0)ƙ = 0.

Therefore, the curl of V is:

∇ × V = (∂Vz/∂y - ∂Vy/∂z)î + (∂Vx/∂z - ∂Vz/∂x)ĵ + (∂Vy/∂x - ∂Vx/∂y)ƙ = 0î + 0ĵ + 0ƙ = 0.

2. For V = (3x²2– 23)Â + 3ỹ + (2.3 – 3x²2)xzî:

Divergence (div V):

∇ · V = (∂Vx/∂x) + (∂Vy/∂y) + (∂Vz/∂z).

Here, Vx = (3x²2– 23)Â, Vy = 3ỹ, Vz = (2.3 – 3x²2)xz.

∂Vx/∂x = 6xÂ, ∂Vy/∂y = 3, ∂Vz/∂z = 2xz.

Therefore, the divergence of V is:

∇ · V = (∂Vx/∂x) + (∂Vy/∂y) + (∂Vz/∂z) = 6x + 3 + 2xz.

Curl (curl V):

∇ × V = (∂Vz/∂y - ∂Vy/∂z)î + (∂Vx/∂z - ∂Vz/∂x)ĵ + (∂Vy/∂x - ∂Vx/∂y)ƙ.

∂Vz/∂y - ∂Vy/∂z = 0 - 0 = 0.

∂Vx/∂z - ∂Vz/∂x = 0 - 0 = 0.

∂Vy/∂x - ∂Vx/∂y = 0 - 0 = 0.

Therefore, the curl of V is:

∇ × V = (∂Vz/∂y - ∂Vy/∂z)î + (∂Vx/∂z - ∂Vz/∂x)ĵ + (∂Vy/∂x - ∂Vx/∂y)ƙ = 0î + 0ĵ + 0ƙ = 0.

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The electric force between the droplets, and the horizontal acceleration this force produce on the droplets are: 5.84*10^-7 N and 0.32 m/s² respectively

In physics the electric force is the force that attracts or repels two charges (q) separated at a distance called (r), this is expressed in the international system of units in Newton.

To solve this exercise the electric force formulas and the procedures we will use are:

Where:

Given Info:

Applying the electric force formula we have:

F = (k * q1 * q2)/r²

F = [(9 *10^9 N*m²/C² * (2.9*10^-11 C) * (2.9*10^-11 C)]/ (3.6*10^-3 m)²

F = 7.569*10^-12 N*m² /1.296*10^-5 m²

F = 5.84*10^-7 N

Applying the force formula and clearing the acceleration, we get:

a= F/m

a= 5.84*10^-7 N/ 1.8*10^-6 kg

a= 0.32 m/s²

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The production function will have constant returns to scale if 2αβ = 1

Constant returns to scale (CRS) implies that if all inputs increase by a factor of λ, the output increases by λ as well. The requirement for constant returns to scale (CRS) in a Cobb-Douglas production function with a new input factor is given by the sum of exponents on all variables equal to 1.

In this case, Y = AKαLβMγ.

Thus, we have that α + β + γ = 1 for constant returns to scale in K, L, and M, because the sum of the exponents is 1.

If the sum of the exponents is less than 1, it indicates decreasing returns to scale. If the sum of the exponents is greater than 1, it indicates increasing returns to scale. If we take γ = 0, we obtain the production function used in class, which is Y = AKαLβ, thus α + β = 1 for constant returns to scale in K and L.

When γ = 0, the answer we get is consistent with what we learned in class. Now, we consider the constant elasticity of substitution (CES) technology, where Y = [aKα + bLα]β. The production function will have constant returns to scale (CRS) in K and L if the sum of the exponents of K and L is equal to 1.

Therefore, αβ + αβ = 1, implying 2αβ = 1.

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According to the question of force, the y-component of F3 is -2.719 N.

What is force?

Force is a fundamental concept in physics that describes the interaction between two objects or systems. It is a vector quantity, meaning it has both magnitude and direction, and can be described mathematically. Force is a push or pull that can cause an object to accelerate, change its direction, or change its shape. Force is a function of mass and acceleration, as described by Newton's second law of motion.

The y-component of F3 can be calculated using the equation F3y = F1y + F2y. Since F1 is at a 180° angle, its y-component is 0. The y-component of F2 can be calculated using the equation F2y = F2 × sin(θ), where θ is the angle of F2. In this case, θ is 2430°, so the y-component of F2 is 8.90 × sin(2430°) = 8.90 × -0.3105 = -2.719 N. Therefore, the y-component of F3 is -2.719 N.

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Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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Answer:

The only element is A). hydrogen.

Explanation:

I hope this helps.

Answer:

hydrogen or A

Explanation:

correct on test (edge 2021)

False. The relative humidity will decrease if the mixing ratio drops and the temperature remains unchanged.

Relative humidity is the ratio of the amount of water vapor present in the air to the maximum amount the air can hold at a given temperature, so if the amount of water vapor decreases (due to lower mixing ratio), the relative humidity decreases unless the temperature also decreases.

False. If the temperature remains unchanged and the mixing ratio drops, the relative humidity will decrease. This is because relative humidity is the ratio of the actual amount of water vapor in the air (mixing ratio) to the maximum amount of water vapor the air can hold at a specific temperature. If the mixing ratio decreases while temperature stays constant, the relative humidity will be lower.

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