Use the image to answer questions 41 through 43. Anita plays with some magnets. She learns that small round magnets have the north pole on one side and the south pole on the other. Anita hangs a small round magnet from a string. Then she attaches a paper bird to the south pole side of the magnet. The north pole side of the magnet is uncovered on the back of the bird. 41 Which of these actions would make Anita's bird move away from the object that moves toward it? A. moving the south pole end of a bar magnet toward the "bird side" of the round magnet B. touching the "bird side" of the round magnet with a metal clip C. touching the "bird side" of the round magnet with a plastic pen D. moving the north pole end of a bar magnet toward the "bird side" of the round magnet​

Light has been traveling from this object before it arrives on earth for 1,500 light-years.

Why is Orion Nebula so bright?

The Orion Nebula, a colourful cloud of gas and cosmic dust, is a star-forming region. The nebula has "a rather brilliant apparent brightness because it is the nearest massive star-forming zone to Earth.

Why was Orion given that name?

The ancient Egyptians believed that the stars in the belt represented the spot where the spirit of the god Osiris would ultimately dwell. To the Arabs, the constellation appeared to be enormous. The mythological Greek hunter Orion is the subject of the constellation's name.

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-27.7 x 10⁶ N is the net force on particle q₂..

Define a charged particle

A particle with an electric charge is said to be charged particle. It might be an ion, such as a molecule or atom having an excess or shortage of electrons in comparison to protons. It could also be an elementary particle like as an electron, proton, or another one that is thought to have the same charge (except antimatter).

F₁₂ = kq₁q₂/r²

k is Coulomb's constant

r is the distance between q₁ and q₂

q represent charges

F₁₂ = (9x 10⁹ x 18.1 x 10⁻³ x 11.2 x 10⁻³)/(0.28)²

F₁₂ = -23* 10⁶ N

F₂₃ = kq₂q₃/r²

F₂₃ = -(9 x 10⁹ x 11.3 x 10⁻³ x 5.67 x 10⁻³)/(0.35)²

F₂₃ = 4.7 x 10⁶ N

F(net) = F₁₂ + F₂₃

         = -23* 10⁶ N + -4.7 x 10⁶ N

         =  -27.7 x 10⁶ N

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(a) The power required by the car climbing the inclined plane at steady speed is 15.554 kW.

(b) The power required by the car when the speed changes is 19.45 kW.

The power required by a car climbing the inclined plane is calculated as follows;

P = Fv

where;

Since the speed is steady, v = 80 km/h = 22.22 m/s

P = 700 N x 22.22

P = 15,554 W

P = 15.554 kW

When the speed of the car changes from 90 km/h to 110 km/h, the power required is calculated as;

vf = 110 km/h = 30.56 m/s

vi = 90 km/h = 25 m/s

V = ( 30.56 + 25 ) / 2 = 27.78 m/s

P = FV

P = 700 x 27.78

P = 19,446 W

P = 19.45 kW

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Answer:

Explanation:

To solve for the mass of the football player, we can use the conservation of momentum principle, which states that the total momentum before a collision is equal to the total momentum after the collision. Assuming the collision is perfectly elastic, we have:

m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2'

where m1 is the mass of the football player, v1 is the initial velocity of the football player, m2 is the mass of the referee, v2 is the initial velocity of the referee, v1' is the final velocity of the football player, and v2' is the final velocity of the referee.

Since the referee is at rest before the collision, we can set v2 = 0. Plugging in the given values, we get:

m1 * 8 + m2 * 0 = m1 * (-8) + m2 * 5

Expanding and solving for m1:

8m1 = -8m1 + 80

16m1 = 80

m1 = 5 kg

So, the mass of the football player is 5 kg.

The energy input at aphelion (farthest from the sun) is 92% of the intensity at perihelion (closest to the sun) because of the inverse-square law, which states that the intensity of radiation decreases with the square of the distance from the source.

However, the difference in energy input does not solely explain the difference in surface temperature from winter to summer.

Other factors, such as the Earth's axial tilt, atmospheric composition, and cloud cover also play a role in determining the surface temperature.

Evidence from climate models and observations indicate that changes in these factors, especially changes in the number of greenhouse gases in the atmosphere, can have a significant impact on global temperature patterns.

In conclusion, while the inverse-square law affects the intensity of solar radiation, it is not the sole factor in determining surface temperature, and the role of other factors must be considered to fully understand seasonal and climatic variations.

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The minimum deceleration required to stop the car in 35 meters is 40000 m/s^2.

Deceleration is defined as  the decrease in speed as the body moves away from the starting point.

The minimum deceleration required can be calculated using the equation of motion:

d = v^2 / (2 * a)

where d is the distance, v is the initial velocity, and a is the acceleration.

Rearranging the equation to solve for a:

a = v^2 / (2 * d) = (3500 m/s)^2 / (2 * 35 m) = 40000 m/s^2

In conclusion, , the minimum deceleration required to stop the car in 35 meters is 40000 m/s^2.

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Answer:

Explanation: =− And   ..=. −=.  = =.  ( .. . )    ( . ..)   =. Therefore   = .=

The quantities that can be compared from four cars is the average acceleration. Answer A.

The question isn't complete. A similar question is in the attachment. When a truck or a car increases its velocity over time, it means it experiences acceleration. The vehicle moves in a non-uniform motion. The formula in non-uniform motion

where

The information in the question  that four cars have a different time to travel but have the same

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Answer:

E+V= Weird

Explanation:

If you subtract "e" repeating from E and V you'll get the equation above.

Answer:

it's there to reduce movement of the passenger if hit.

Explanation:

it's quite simple really, its there because if it wasn't the person would've gone flying through the front window screen.

The  incorrect equation  among them  is: Δt = v/Δx.

A physical quantity is a property of a substance or system that can be measured and quantified. The algebraic multiplication of a "Numerical value" and a "Unit" can be used to express a physical quantity as a value.

Unit of distance Δx is meter.

Unit of elapsed time Δt is second.

Unit of speed v is meter per second.

Hence, the possible equations  among them are:

Δx = vΔt

v = Δx/Δt

Δt = Δx/v

1/Δt = v/Δx

But  the  incorrect equation  among them  is:

Δt = v/Δx.

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Your question is incomplete, but most probably the options of the question are:

Δx = vΔt

v = Δx/Δt

Δt = Δx/v

1/Δt = v/Δx

Δt = v/Δx.

The equivalent of what mathematicians refer to as a self-adjoint operator in physics is a Hermitian operator.

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The electric field strength between A and B 90x20=1800.

The physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them, is known as an electric field (also known as an E-field. It can also refer to a system of charged particles' physical field.  

Electric charges and time-varying electric currents are the building blocks of electric fields. The electromagnetic field, one of the four fundamental interactions (also known as forces) of nature, manifests itself in both electric and magnetic fields.

Electrical technology makes use of electric fields, which are significant in many branches of physics. For instance, in atomic physics and chemistry, the electric field acts as an attractive force to hold atoms' atomic nuclei and electrons together.

Therefore, The electric field strength between A and B 90x20=1800.

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The total resistance of the circuit is 3 ohms.

The total current in the circuit is 4 A.

The power of the circuit is 48 W.

What is the total resistance of the circuit?

The total resistance of the circuit is calculated as follows;

1 / Rt = 1/R1 + 1/R2 + 1 / R3

1/Rt = 1/6 + 1/12 + 1/12

1/Rt = 0.3333

Rt = 3 ohms

The total current in the circuit is calculated as follows;

I = V / Rt

I = ( 12 ) / ( 3 )

I = 4 A

The power of the circuit is calculated as follows;

P = IV

P = ( 4 x 12 )

P = 48 W

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The required circuit can be constructed by  arranging  resistor 1 (60 Ω), resistor 3 (20Ω) in one arm and resistor 2 (30 Ω) and open switch in other arm.

A resistor is an electrical component that controls or restricts how much electrical current can pass across a circuit in an electronic device. A specified voltage can be supplied via resistors to an active device like a transistor.

When the circuit be constructed by  arranging  resistor 1 (60 Ω), resistor 3 (20Ω) in one arm and resistor 2 (30 Ω) and open switch in other arm, the equivalent resistor is = (60 + 20) Ω = 80 Ω.

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The planet that a Martian is on is Earth.

The formula to calculate the period from a simple pendulum

T = 2π × √(L ÷ g)

T ÷ 2π = √(L ÷ g)

(T ÷ 2π)² = L ÷ g

T² ÷ 4π² = L ÷ g

L = (T² × g) ÷ 4π²

Compare from pendulum on Mars and another planet

L₁ = L₂

(T₁² × g₁) ÷ 4π² = (T₂² × g₂) ÷ 4π²

T₁² × g₁ = T₂² × g₂

1.5² × 0.38g = 0.92² × g₂

2.25 × 0.38g = 0.8464 × g₂

0.855g = 0.8464 × g₂

g₂ = 0.855g ÷ 0.8464

g₂ = 1.0101g

g₂ = 1.0101 × 9.8

g₂ = 9.89

The other planet is Earth.

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Answer:

pv=nrt

Explanation:

pv=nrt

The horizontal force required to displace the chandelier 0.16 m is equal to the restoring force divided by the displacement is 1500N

A. To displace the position of the chandelier 0.16 m to one side, a horizontal force is necessary to balance the restoring force due to the tension in the wire. This restoring force can be calculated as the weight of the chandelier times the acceleration due to gravity:

Frest = W * g = 25 kg * 9.8 m/s^2 = 245 N

The horizontal force required to displace the chandelier 0.16 m is equal to the restoring force divided by the displacement:

Fhorizontal = Frest / (0.16 m) = 245 N / 0.16 m = 1531 N

Rounding to two significant figures, the answer is:

Fhorizontal = 1500 N

B. The tension in the wire can be calculated as the sum of the forces in the vertical direction, which is equal to the weight of the chandelier:

Tension = W = 25 kg * 9.8 m/s^2 = 245 N

Rounding to two significant figures, the answer is:

Tension = 250 N

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The speed of the two carts after the collision is 10 m/s.

What is momentum?

Momentum is a measure of an object's motion and is defined as the product of an object's mass and velocity. The SI unit of momentum is kilogram-meters per second (kg m/s).

In physics, momentum is an important concept in the study of motion and is related to the forces acting on an object. According to Newton's second law of motion, the momentum of an object changes when a force is applied to the object. The magnitude of the change in momentum is proportional to the size of the force and the time over which it is applied.

In collisions and other interactions between objects, the total momentum of the system is conserved, meaning that the total momentum before the interaction is equal to the total momentum after the interaction.

initial momentum = mA · vA1 + mB · vB1

final momentum = (mA + mB) · vAB2

Where:

mA = mass of cart A = 0.500 kg

vA1 = velocity of cart A before the collision = 100 m/s

mB = mass of cart B = 1.50 kg.

vB1 = velocity of cart B before the collision = - 20 m/s

vAB2 = velocity of the carts that move as a single object = unknown.

(notice that we have considered leftward as negative direction)

Since the momentum of system remains constant:

initial momentum = final momentum

mA · vA1 + mB · vB1 = (mA + mB) · vAB2

Solving for vAB2:

(mA · vA1 + mB · vB1) / (mA + mB) = vAB2

(0.500 kg · 100 m/s - 1.50 kg · 20 m/s) / (0.500 kg + 1.50 kg) = vAB2

vAB2 = 10 m/s

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Answer: W = 6.4 x 10^5

Explanation: W = P x AV +(1.6x10^5 PA)(4M)

                                                        W = 6.4 x 10^5

1. The percentage of incoming solar radiation which reflected and scattered back into space is 30%

2. Yes, solar radiation that is reflected and scattered heat the objects it strikes does.

3. The percentage of incoming solar radiation is 19% absorbed by clouds and gasses in the atmosphere.

4. 51% percentage of incoming solar radiation passes through the atmosphere and is absorbed by the Earth's surface.

5. No. The most transmit or absorb is Earth's surface.

In a climate system, all processes start from radiant energy coming from the sun onto the surface of the atmosphere (air). Furthermore, this energy is forwarded to the earth's surface where along the way some of it is reflected back into space. Part of it is absorbed by the air and the rest is transmitted to the earth's surface.

Radiation that can reach the earth's surface can eventually heat the earth's surface, evaporate water, melt snow and heat the ground. The changed energy is also sent back into space in the form of radiation.

Variations in the amount of radiation received by the earth's surface and variations in the interaction between the earth and the atmosphere can cause spatial and time variations of energy changes which ultimately determine the climate of a place.

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(1) The instantaneous velocities are 4.2 km/h south and 4.1 km/h west

(2) The average velocity of Joe is 5.9 km/h southwest.

The instantaneous velocities are the velocities of Joe at any given time period and it is calculated as follows;

v (1 ) = 4.2 km/h south

v ( 2 ) = 4.1 km/h west

The average velocity of Joe is calculated from the ratio of the total displacement to total time of motion.

v (avg) = ( total displacement ) / ( total time of motion )

v (avg) = 5.9 km/h southwest

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According to the ideal gas law, 0.588 moles of NH3 gas in a 15.0 L container must be heated to a temperature of 1088.85 K or 815.85°C in order for it to impose a pressure of 3.50 atm.

Real gases are simplified into ideal gases to make them easier to understand. It is believed to be made up of point particles that move randomly and independently.

Additionally, it is believed that perfect gas molecules by themselves have no volume.

Three state variables—absolute pressure (P), volume (V), and absolute temperature—define an ideal gas (T). The ideal gas law, an equation that relates them, is based on their relationship.

Therefore, According to the ideal gas law, 0.588 moles of NH3 gas in a 15.0 L container must be heated to a temperature of 1088.85 K or 815.85°C in order for it to impose a pressure of 3.50 atm.

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(a) Relative to the ground, the gravitational potential energy of the orange on the branch is 4.29 J and on ground is 0 J.

(b) ) Relative to the branch, the gravitational potential energy of the orange on the branch is 0 J and on ground is 4.29 J.

(c) The change in potential energy relative to the ground is -4.29 J and relative to the branch is 0 J.

Relative to the ground, the gravitational potential energy of the orange on the branch is calculated as follows;

P.E = mgh

where;

P.E = 0.125 kg x 9.8 m/s² x 3.5

P.E = 4.29 J

The gravitational potential energy of the orange on the ground is calculated as follows;

P.E = mgh

P.E = m x g x 0 m

P.E = 0 J

The change in potential energy = final potential energy - initial potential energy

change in potential energy = 0 J - 4.29 J = - 4.29 J

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The examples of electric insulators are -

glass jar, rubber ball, tree, puddle.

Electric insulators are the materials that does not conduct electricity through them.

Given are the examples of electric insulators.

The examples of electric insulators are -

glass jar, rubber ball, tree, puddle

Therefore, the examples of electric insulators are -

glass jar, rubber ball, tree, puddle.

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Explanation:

To find the final velocity and distance traveled during the acceleration, we can use the equations of motion:

v = u + at, where v is the final velocity, u is the initial velocity (30 m/s), a is the acceleration, and t is the time (6 s)

v = 30 m/s + a x 6 s

d = ut + 0.5at^2, where d is the distance traveled

d = 30 m/s x 6 s + 0.5 x a x (6 s)^2

Since acceleration (a) is not given, we can use one equation to solve for it and substitute into the other:

v = 30 m/s + a x 6 s

a = (v - 30 m/s) / 6 s

Substitute this into the second equation to find the distance:

d = 30 m/s x 6 s + 0.5 x (v - 30 m/s) / 6 s x (6 s)^2

So, we can find the final velocity and distance traveled once the acceleration (a) is known.

Answer: We can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by acceleration.

Let's call the acceleration of the system "a". Then the net force acting on m1 is T1 - T2 + m1 * a = 0.

The net force acting on m2 is T2 - m2 * a = 0.

And the net force acting on m3 is T2 + m3 * a = 0.

Solving these three equations, we get:

T1 = T2 + m2 * a = 60.0 N + 8.00 kg * a

m1 * a = -T2 + 60.0 N + m1 * a

m3 * a = T2 - 60.0 N + m3 * a

Substituting T2 = 60.0 N, we get:

T1 = 60.0 N + 8.00 kg * a

m1 * a = -60.0 N + 10.0 kg * a

m3 * a = 60.0 N + 12.0 kg * a

Solving for the acceleration, we get:

a = (60.0 N + 8.00 kg * a) / (10.0 kg - 8.00 kg) = (60.0 N + 8.00 kg * a) / 2.0 kg

a = (60.0 N + 8.00 kg * a) / 2.0 kg = (60.0 N) / 2.0 kg + (8.00 kg * a) / 2.0 kg

a * 2.0 kg = 60.0 N + 8.00 kg * a

a = 60.0 N / 2.0 kg + 8.00 kg * a / 2.0 kg

a * 2.0 kg - 8.00 kg * a = 60.0 N

a * 10.0 kg = 60.0 N + 8.00 kg * a

a = 60.0 N / 10.0 kg = 6.0 m/s²

Finally, we can use T1 = 60.0 N + 8.00 kg * a to find T1:

T1 = 60.0 N + 8.00 kg * 6.0 m/s² = 60.0 N + 48.0 N = 108.0 N

So the acceleration of the masses is 6.0 m/s², and the tension T1 is 108.0 N.

Explanation:

Since cos(25) is approximately 0.906, the minimum coefficient of static friction is μs >= 0.906

a) Substituting this into the previous equation, we get:

N - mg * sin(25) = μk * N

Solving for N, we get:

N = mg * sin(25) / (1 - μk)

b) Since the force applied by the person is horizontal, the horizontal component of the normal force must balance it. Therefore,

F = N * cos(25)

Solving for N, we get:

N = F / cos(25) = 0 / cos(25) = 0 N

c) Since the person is not slipping, the friction force must balance the horizontal component of the gravitational force. Therefore,

fs = μs * N

where μs is the coefficient of static friction.

Since N = mg * cos(25),

fs = μs * mg * cos(25)

d)Since cos(25) is approximately 0.906, the minimum coefficient of static friction is

μs >= 0.906

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Answer:

The difference in the calculated and measured velocity could be due to the fact that the motion sensor may not have been able to accurately detect the velocity of the block 1.0 second before the explosion due to the sudden change in momentum caused by the explosion. Additionally, the motion sensor may not have been able to accurately detect the velocity of the two pieces 1.0 second after the explosion due to the sudden change in momentum caused by the explosion. This could explain the 10% discrepancy between the calculated and measured velocity.

Explanation:

The final speed of the apple would be 26.9 m/s.

Given is that your friend shoots an 80g arrow through a 100g apple balanced on William tells head. The arrow has a speed of 50m/s before passing through the apple and 40m/s after.

In a elastic collision, the total kinetic energy of the system remains the same. So, we can write -

[tex]$E_{1i} +E_{2i} = E_{1f} +E_{2f}[/tex]                                            .... Eq{ 1 }

We can write as -

{1/2 x 80 x 2500} + 0 = {1/2 x 80 x 1600} + {1/2 x 100 x v²}

{1/2 x 100 x v²} = {40 x 2500} - {40 x 1600}

50v² = 40 x 900

v² = 720

v = √720

v = 26.9 m/s

Therefore, the final speed of the apple would be 26.9 m/s.

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