What would happen to the magnetic field if she connects the battery in the opposite direction? the field would stop. the field would get stronger. the field would reverse its poles. the field would get weaker.

The gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects.

The factors affecting gravitational force are the masses of the objects and the distance separating the objects.

The gravitational force increases with increase in mass and decreases with increase in distance of separation and vice versa.

Therefore, the gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects.

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Answer: Up

Explanation:

Answer:   For less steep slope, less power is needed by the vehicle. The concept is that it will be easier for one to exert less control and that too for a more extended period. So the roads of the mountains are always made curvy and not straight.

A manufacturer supplies plastic cups that are placed under the legs of the chair. The manufacturer's claim is that there will be no marks of chair due to pushing or pulling on the floor.

A manufacturer is a person who converts his idea of developing and constructing any item using some set of machines.

A manufacturer supplies plastic cups that are placed under the legs of the chair.

When there is a relative motion between two objects, friction force causes the opposition to this motion. Between chair and floor, there will be high magnitude of force. But if we insert plastic cups in the legs of chair, then the friction between cup and floor will be less. This keeps the floor protected form any scratches.

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Answer:

Remain at 12 noon - you would be traveling with the wavefront that reads 12 noon:

Also     Δt' = Δt / (1 - β^2)^1/2  

Where Δt is the proper time interval (at the clock)

Since the denominator is zero the measured time interval is also infinite and the time between "ticks" is infinite

Answer:

K=6.250 J

Explanation:

m=500kg

v=m/s

Kinetic energy= ½mv²=½(500×25) J= 6.250 J

When two surfaces interact, some mechanical energy leaves the system as thermal energy due to Friction.

(a) The velocity ratio of the screw is 1570.8.

(b) The mechanical advantage of the screw is 785.39.

The velocity ratio of the screw is calculated as follows;

V.R = 2πr/P

where;

V.R = (2π x 0.25)/(0.001)

V.R = 1570.8

E = MA/VR x 100%

0.5 = MA/1570.8

MA = 785.39

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The type of model used is most likely to be conceptual because it shows the relationship between cause and effect.

A simulation can be defined as a model which is designed and developed to imitate the operation of an existing (proposed) real-life system or natural phenomenon, so as to enhance the ability to study, analyze, and make informed decisions about it.

Generally, there are different types of simulation and these include the following:

In this scenario, the simulation which shows whether changing various weather conditions increases the likelihood that a hurricane will form is missing.

Thus, I would infer that the type of model used is most likely to be conceptual because it shows the relationship between cause and effect.

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Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process.

Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process. There is no quick way to loose weight because the calories were added on gradually and must also be lost gradually.

Before and after photos does not show the loss in calories. This can only be determined by measurement.

Before you buy exercise equipment;

An example of an exercise equipment is a stationary bicycle. It works when you sit or stand on it and cycle repeatedly though it doesn't move. I am skeptical about it because it may not help you burn a lot of calories except you use it for long periods of time.

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(a) The momentum of the proton is determined as 5.17 x 10⁻¹⁸ kgm/s.

(b) The speed of the proton is determined as  3.1 x 10⁹ m/s.

The momentum of the proton is calculated as follows;

K.E = ¹/₂mv²

where;

v² = 2K.E/m

v² = (2 x 50 x 10⁹ x 1.602 x 10⁻¹⁹ J)/(1.67 x 10⁻²⁷)

v² = 9.6 x 10¹⁸

v = 3.1 x 10⁹ m/s

P = mv = (1.67 x10⁻²⁷ x 3.1 x 10⁹) = 5.17 x 10⁻¹⁸ kgm/s

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When the net force exerted on each car is identical. after 10 seconds, the amount of momentum is same for all cars.

The change in momentum is equal to the product of impact force applied while colliding and time for that impact.

F. t = m (Vf -Vi)

where, Vf is the final velocity and Vi is the initial velocity.

For car X, Fx x t = Mx Vx

For car Y, Fy x t = My Vy

For car Z, Fz x t = Mz Vz

The force applied is same for all and the the time is also same equal to 10 seconds. The impulse is same for all the cars.

Thus, the three cars have same momentum.

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The resultant of the two 10N forces acting at a point in the given direction is the single force which will have the same effect as all the forces acting at that point.

The resultant of two or more forces is that single force which will have the same effect as all the forces acting at that point in a given direction.

Since forces are vector quantities, the resultant force is obtained by vector addition.

The direction of the forces are also obtained.

Therefore, the resultant of the two 10N forces acting at a point in the given direction is the single force which will have the same effect as all the forces acting at that point.

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Answer:

redox reaction

Explanation:

It's very important for an individual to possess the ability to disagree respectfully with another person because strengthens one's relationships.

A conflict is any form of disagreement, misunderstanding, or struggle that arises between two (2) or more parties, especially due to any of the following reasons;

However, it's very important for an individual to possess the ability to disagree respectfully with another person because of the following:

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Answer:

183

Explanation:

Ohm's Law states that Resistance = Voltage / Current, so:

220/1.2 = 183.333

The type of assessments are based on repeatable, measurable data are objective assessments.

The reason behind an assessment is to achieve a pre determined goal. There are several types of assessment that can be undertaken based on particular need.

The type of assessments are based on repeatable, measurable data are objective assessments.

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Answer:

Option 3

Explanation:

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Sound waves are invisible and can move through the water, therefore the correct answer is option D.

It is a particular variety of mechanical waves made up of the disruption brought on by the movements of the energy. In an elastic medium like the air, a sound wave travels through compression and rarefaction.

Sound waves cannot travel in a vacuum, and they are invisible in nature.

While electromagnetic waves are transverse waves, sound waves are longitudinal waves, and the temperature of the medium in which they travel greatly affects the speed of the sound.

The mathematical expression for the speed of the sound in air is given by

v= √γRT

where v is the speed of the sound

R is the ideal gas constant

T is the temperature

γ is the adiabatic index

The speed of sound in air at 0° Celcius is 330 m/s.

Since sound waves can travel through water and are invisible, option D is the appropriate answer.

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The direction of a vector that has the following components is 233°.

The direction of a vector is where its endpoint points. However, when at least one of the characteristics mentioned above is different, we say that the vectors are different.

In this case, this calculus will be:

[tex]tan\theta= \frac{59}{44} \\\theta= tan^{-1}(\frac{59}{44})\\ \theta= 233\°[/tex]

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The vector with components x = -44 m and y = -59 m has a direction of approximately 52.16 degrees counterclockwise from the positive x-axis.

The direction of a vector with components x = -44 m and y = -59 m can be determined using trigonometry.  In this case, we have:

x-component (x) = -44 m

y-component (y) = -59 m

We can use the inverse tangent function to find the angle.

The direction angle (θ) can be calculated as:

θ = arctan(y / x)

θ = arctan((-59 m) / (-44 m))

Calculating this expression:

θ ≈ arctan(1.341)

To find the actual angle, we can use a calculator or table to determine the inverse tangent of 1.341.

θ ≈ 52.16 degrees

Therefore, the direction of the vector is approximately 52.16 degrees in the counterclockwise direction from the positive x-axis.

The vector with components x = -44 m and y = -59 m has a direction of approximately 52.16 degrees counterclockwise from the positive x-axis.

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Hi there!

Recall the equation for the electric field produced by a point charge:

[tex]E = \frac{kQ}{r^2}[/tex]

E = Electric field (2.86 × 10⁵ N/C)
k = Coulomb's Constant (8.99 × 10⁹ Nm²/C²)

Q = Charge (3 × 10⁻⁶ C)
r = distance from center of charge (? m)

Rearrange the equation to solve for 'r'.

[tex]r^2 = \frac{kQ}{E}\\\\r = \sqrt\frac{kQ}{E}}}\\\\r = \sqrt{\frac{(8.99\times10^9)(3\times10^6)}{(2.86\times 10^5)}} = \boxed{0.307 m}[/tex]

Answer:

0.307

Explanation:

edge22

The magnitude of the angular momentum of the two-satellite system is best represented as, L=m₁v₁r₁-m₂v₂r₂.

The rotational analog of linear momentum is angular momentum also known as moment of momentum or rotational momentum.

It is significant in physics because it is a conserved quantity. the total angular momentum of a closed system remains constant. Both the direction and magnitude of angular momentum are conserved.

The magnitude of the angular momentum of the two-satellite system is best represented as;

L=∑mvr

L=m₁v₁r₁-m₂v₂r₂

Hence, the magnitude of the angular momentum of the two-satellite system is best represented as, L=m₁v₁r₁-m₂v₂r₂.

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Thermal insulation reduces unwanted heat loss and also reduces unwanted heat gain.

Insulation creates a barrier between the hot and the cold object by reducing heat transfer by either reflecting light radiation.

Insulating materials are bad conductors of electricity and heat. So, insulating reduces the heat loss via conduction.

Thermal energy is prevented to increase the temperature of building in summers and decrease in winters. The thermal energy transfer plays vital role in insulating a building.

Thus Thermal insulation reduces unwanted heat loss and also reduces unwanted heat gain.

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After three half-lives have elapsed, the amount of an 8.0 g sample of a radionuclide that remains undecayed is 1.0 g.

Half-Life refers to the time it takes for half the amount of a substance to disappear or change.

The nucleus of the atoms of radioactive elements disintegrate to half their starting amounts after every Half-Life.

After three half-lives one-eight of the original atoms remain.

Therefore, after three half-lives have elapsed, the amount of an 8.0 g sample of a radionuclide that remains undecayed is 1.0 g.

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The time of motion of the ball before coming to rest is  determined as 5.5 s.

The time of motion of the ball before coming to rest is calculated as follows;

v = u + at

when the ball comes to rest, v = 0

0 = u + at

0 = 55 + (-10)t

0 = 55 - 10t

10t = 55

t = 5.5s

Thus, the time of motion of the ball before coming to rest is 5.5 s.

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The angles for the first-order diffraction of the shortest and longest wavelengths of visible light are 22.33 ⁰ and 49.46 ⁰ respectively.

The angle for the first order diffraction is calculated as follows;

dsinθ = mλ

sinθ = mλ/d

d = 1/10,000 lines/cm

d = 1 x 10⁻⁴ cm x 10⁻² m/cm = 1 x 10⁻⁶ m/lines

sinθ = (1 x 380 x 10⁻⁹)/(1 x 10⁻⁶)

sinθ = 0.38

θ = sin⁻¹(0.38)

θ = 22.33 ⁰

sinθ = (1 x 760 x 10⁻⁹)/(1 x 10⁻⁶)

sinθ = 0.76

θ = sin⁻¹(0.76)

θ = 49.46 ⁰

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