a 7.50g-bullet has a speed of 555 m/s as it leaves the muzzle of a rifle. if the barrel of the rifle is 0.950 m, what is the average force exerted on the bullet by the ammunition?

The voltage waveform is more sinusoidal than the current waveform.

This is because the voltage source is assumed to be an ideal source, which means that the voltage is supplied without loss or fluctuation while the current waveform is distorted due to the loads present in the circuit. When a voltage waveform is applied to a circuit with inductance and capacitance, the resulting current waveform will be distorted and will not be sinusoidal. The current waveform is affected by the presence of capacitance and inductance in the circuit, which cause the current to lag behind the voltage. The current waveform becomes more distorted as the load resistance increases.

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The speed of sound in air is approximately the same for all wavelengths.

Step by step Explanation :

The evidence that this is true is the following:

The speed of sound in air is approximately the same for all wavelengths. This is proved by the fact that a sound wave is an atmospheric disturbance that propagates as a longitudinal wave through the air, travelling as a pressure wave that causes areas of compression and rarefaction.

The speed of sound in air is constant and is determined by the average kinetic energy of the air molecules. This is why the speed of sound is the same for all wavelengths.

When the temperature of air is held constant, the speed of sound in air is constant. This is the primary reason why the speed of sound in air is practically constant at a given temperature.

The wavelengths of sound range from about 17 meters for the lowest audible frequency (about 20 Hz) to about 17 millimeters for the highest audible frequency (about 20,000 Hz).

The speed of sound in dry air at room temperature is around 343 meters per second, but it may vary depending on a variety of factors, including humidity, temperature, and pressure.

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The statement that is supported by the data is that both of the crates are accelerating at the same rate. That is option C.

Acceleration is defined as the quantity that measures the rate of change of velocity of a moving object.

According to Newton's second law, the force (F) acting on an object is equal to the mass (m) of object times its acceleration (a).

That is F = ma

For the first crate = a = 686/70 = 9.8 m/s²

Fro the second crate = 490/50 = 9.8 m/s²

Therefore, Both of the crates are accelerating at the same rate.

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The current through the bulb is 2.0 amperes. Then the electric charge that passes through Luighbu is 120 Columbs.

Given that the current through a lightbulb is 2.0 amperes. To find the coulombs of electric charge that pass through the light bulb in one minute, we need to know the formula that relates current, time, and electric charge:

Q = It

Where Q is the electric charge (in coulombs), I is the current (in amperes), and t is the time (in seconds).

To convert one minute to seconds, we multiply it by 60. Hence, the time t = 1 minute × 60 seconds/minute = 60 seconds.

So, the electric charge that passes through the light bulb in one minute is given by

Q = It = 2.0 A × 60 s

Q = 120 C

Therefore, the number of coulombs of electric charge that pass through the light bulb in one minute is 120 C.

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The solid sphere should be released from a height of 0.225 m on the incline to have the same speed as the solid cylinder at the bottom of the hill.

To solve the problem, we need to use conservation of energy, which states that the total energy of a closed system remains constant. At the top of the incline, the cylinder and sphere both have potential energy, which is converted to kinetic energy as they roll down the incline.

Since the two objects have the same mass, we only need to consider their different moments of inertia.

The potential energy at the top of the incline is equal to mgh, where m is the mass, g is the acceleration due to gravity, and h is the height of the incline. At the bottom of the incline, the potential energy is converted to kinetic energy, which is equal to (1/2)mv^2, where v is the velocity.

For the solid cylinder, the moment of inertia is (1/2)mr^2, where r is the radius. For the solid sphere, the moment of inertia is (2/5)mr^2.

Since the two objects have the same kinetic energy at the bottom of the incline, we can set their potential energies equal to each other, and solve for the height of the incline for the sphere:

mgh_cylinder = (1/2)mv_cylinder^2

mgh_sphere = (1/2)mv_sphere^2

mgh_cylinder = mgh_sphere

(1/2)mv_cylinder^2 = (1/2)mv_sphere^2

v_cylinder^2 = v_sphere^2

(1/2)mv_cylinder^2 = (1/2)mv_sphere^2

(1/2)mr_cylinder^2(v_sphere^2/r_cylinder^2) = (1/2)(2/5)mr_sphere^2(v_sphere^2/r_sphere^2)

v_sphere^2 = (5/2)(r_cylinder^2/r_sphere^2)v_cylinder^2

h_sphere = (v_sphere^2/2g)

= (5/4)(r_cylinder^2/r_sphere^2)h_cylinder

= (5/4)(1/2)^2(0.72 m)

= 0.225 m

Therefore, the solid sphere should be released from a height of 0.225 m on the incline to have the same speed as the solid cylinder at the bottom of the hill.

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In order to move the fridge to the left, Dave would have to push with a force of at least 210 N to the left, in the opposite direction of the force that John is pushing in. This is because the two forces (John's pushing to the right and Dave's pushing to the left) must be of equal magnitude and opposite direction in order for the fridge to move in the desired direction.

The magnitude of Dave's pushing force must be equal to or greater than John's, which is 210 N. This is because forces in opposite directions cancel each other out; therefore, the net force acting on the fridge must be equal to or greater than the magnitude of John's pushing force, 210 N.

In order for the fridge to start moving initially, Dave's pushing force must be greater than zero. This is because for the fridge to begin to move, the net force acting on the fridge must be greater than zero. A pushing force of 210 N to the left by Dave is the minimum force required to make the fridge start moving to the left.

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Light is a form of energy. All the properties of light can be explained by Considering the Wave length and lespuscutar theory.

The Wave Theory states that waves are how light moves across space. When Visible light  is passed through a prim it is split up into seven colours which corresponds to definite wave length. a phenomenon Called dispersion. The study of interaction between matter and electromagnetic radiation  is defined as spectroscopy.

A spectrophotometer is a device which detect the percentage transmittance of light radiation. When light of certain intensity and frequency range is passed through the Sample Thus the instrument Compare the intensity of the transmitted light with that of the incident light.

A spectroscope is a device that divides light into its individual wavelengths to produce a spectrum.

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Answer:

All options except fur color of palomino horses and blood type

Answer:

A, B, D, and E

Explanation:

No, the sound wouldn't be twice as loud as that of either flutist playing alone at that intensity. The increase in sound intensity would be less than twice as loud.

This is because when two sound waves coincide, the amplitude of the resulting sound wave is the sum of the amplitudes of the individual sound waves. That is, when two identical sound waves come together, they create a new sound wave that is slightly louder than the original sound wave, but not twice as loud.

Furthermore, sound intensity is affected by the distance from the sound source, and when two flutists are playing together, the sound waves produced have to travel further before they reach the listener, thus reducing the intensity of the sound.

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The magnitude of the magnetic field at a point 58.0 cm from a long, thin conductor carrying a current of 4.70a is: 40.6 T

To calculate the magnitude of the magnetic field at a point 58.0 cm away from a long, thin conductor carrying a current of 4.70 A, we can use the equation B = μ_0*I/(2*pi*r).

[tex]B = 4πx10^-7*4.70/(2*pi*0.58) = 40.6 T.[/tex]

Here, μ_0 is the permeability of free space (4πx10^-7 Tm/A), I is the current (4.70 A), and r is the distance from the conductor (58.0 cm). So, the magnitude of the magnetic field at the point is [tex]B = 4πx10^-7*4.70/(2*pi*0.58) = 40.6 T.[/tex]

To understand why the magnetic field is present, we must look at the conductor carrying a current. When electric current passes through a conductor, it creates a magnetic field around it. This magnetic field is inversely proportional to the distance from the conductor, meaning the closer you get to it, the stronger the magnetic field will be.

Since the conductor in this example has a current of 4.70 A, the magnetic field it creates will be stronger than a conductor with a lower current.

To conclude, the magnitude of the magnetic field at a point 58.0 cm away from a long, thin conductor carrying a current of 4.70 A is 40.6 T. The presence of this magnetic field is due to the electric current passing through the conductor, and it is inversely proportional to the distance from the conductor.

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(a) When the velocity and acceleration vectors are opposite, the object is slowing down while moving in the same direction. An example of this is a car moving along a straight road while braking. Another example is when a particle is moving around a circular track at a constant speed but changing direction.

The velocity vector is always tangent to the track while the acceleration vector points towards the center of the circle. Also, a car moving along a straight road while speeding up has a velocity vector in the direction of motion and an acceleration vector in the opposite direction, which is opposite to the direction of the velocity.

(b) When the velocity and acceleration vectors are in the same direction, the object is speeding up in the direction of motion. An example of this is a car moving along a straight road while speeding up. Also, a particle moving around a circular track at a constant speed has a velocity vector that is tangent to the track, and its acceleration vector points towards the center of the circle.

(c) When the velocity and acceleration vectors are mutually perpendicular, the object is changing direction, but not changing its speed. An example of this is a particle moving around a circular track at a constant speed, where the velocity vector is tangent to the track and the acceleration vector points towards the center of the circle.

Additionally, a car moving along a straight road while speeding up or braking has a velocity vector in the direction of motion or opposite to the direction of motion, respectively, and an acceleration vector perpendicular to the velocity vector.

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The light is brighter in a battery-powered torch, you should change the wattage or power rating of the bulb. A higher-wattage bulb will produce more light and therefore be brighter. When selecting a new bulb for the torch, make sure to choose a bulb with a higher wattage rating than the current bulb.

A battery is an electrochemical device that converts chemical energy into electrical energy through a chemical reaction. It consists of one or more electrochemical cells, each of which contains a positive electrode (cathode), a negative electrode (anode), and an electrolyte that allows ions to move between the two electrodes.

During the discharge process, a chemical reaction takes place within the battery that causes electrons to flow from the negative electrode through an external circuit to the positive electrode, generating an electrical current. This current can then be used to power a wide range of electrical devices, such as flashlights, smartphones, and cars. The chemical reaction can be reversed by recharging the battery, which involves applying an external electrical current to the electrodes to force the reaction to occur in the opposite direction.

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The time at which the centripetal and tangential accelerations of a point on the rim have the same magnitude is given by t = √(R/α).

A tangential = R, where R is the wheel's radius and is the angular acceleration, gives the tangential acceleration of a point on the rim of the wheel.

A centripetal =  v²/R, where v is the speed of the point, gives the centripetal acceleration of a point on the rim of the wheel.

At time t, the wheel's angular displacement is given by  = (1/2)t2, and the speed of the point on the rim is given by v = R, where is the wheel's angular velocity.

Setting the magnitudes of the tangential and centripetal accelerations equal, we have:

Rα = v²/R

Substituting v = Rω and simplifying, we get:

Rα = Rω²

α = ω²

Using the definition of angular velocity ω = αt, we get:

t = √(R/α)

Therefore, the time at which the centripetal and tangential accelerations of a point on the rim have the same magnitude is given by t = √(R/α).

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The force between the asteroid and the spacecraft will be 40 N when the spacecraft moves to a position three times as far from the center of the asteroid.

The gravitational force between two objects of masses m1 and m2 separated by a distance r is given by the formula:

F = G(m₁m₂) / r²

where G is the gravitational constant.

In this problem, the asteroid exerts a gravitational force of 360 N on the spacecraft when they are at a certain distance r from each other. When the spacecraft moves to a position three times as far from the center of the asteroid, its distance from the asteroid will be 3r. To calculate the new force between them, we can use the same formula and plug in the new distance:

F' = G(m1m2) / (3r)^2

F' = G(m1m2) / 9r^2

Since the masses of the asteroid and spacecraft are constant, we can divide the second equation by the first to find the ratio of the new force to the original force:

F' / F = (G(m₁m₂) / r²) / 9r²) / (G(m₁m₂) / r²)

F' / F = (1 / 9)

F' = (1 / 9) * F

F' = (1 / 9) * 360 N

F' = 40 N

Therefore, the force will be 40 N.

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The peak wavelength of the blackbody radiation curve for the human body (t5 310 K) is approximately 9.7 micrometers and the type of electromagnetic wave is infrared radiation. Infrared radiation is part of the electromagnetic spectrum and is often referred to as the "heat" radiation because it is emitted by objects that are slightly warmer than room temperature.

The wavelength of infrared radiation is typically in the range of 0.75 micrometers to 1000 micrometers. The peak wavelength of the blackbody radiation curve for the human body (t5 310 K) is the longest wavelength of radiation emitted by the body.

In order to determine the peak wavelength, the Stefan-Boltzmann Law must be applied. This law states that the total amount of energy emitted by a blackbody per unit area is proportional to the fourth power of its absolute temperature. By rearranging the equation, we can calculate the peak wavelength, which is then equal to 2.89 * 10^-3 m * (T^-1/4). Since the temperature is 310 K, the peak wavelength of the blackbody radiation curve for the human body (t5 310 K) is approximately 9.7 micrometers.

The type of electromagnetic wave emitted by the human body at a temperature of 310 K is infrared radiation. Infrared radiation is part of the electromagnetic spectrum and has a wavelength in the range of 0.75 micrometers to 1000 micrometers. Infrared radiation is often referred to as the "heat" radiation because it is emitted by objects that are slightly warmer than room temperature.

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The acceleration be if the force is doubled and the object's mass is halved when a constant force is applied to an object, causing the object to accelerate at 7.50 m/s² is  30.00 m/s².

Therefore Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. It can be expressed mathematically as follows:

[tex]F=ma[/tex]

where F is the force applied to the object,

m is its mass, and

a is its acceleration.

Given that the initial force on the object causes an acceleration of 7.50 m/s²,

we can write it as

[tex]F = m*a_{1}[/tex]

where F1 is the initial force applied,

[tex]a_{1}[/tex] is the initial acceleration, and

m is the mass of the object.

We can rearrange the terms and write it as

[tex]\frac{F}{m}=a_{1}[/tex]

[tex]\frac{F}{m}=7.50[/tex]  m/s²

Now, if the force is doubled and the mass is halved, the equation becomes:

[tex]2F = \frac{1}{2}m[/tex]

where 2F is the new force,

[tex]a_{2}[/tex] is the new acceleration, and

[tex]\frac{1}{2}m[/tex] is the new mass.

We can also write above equation as

[tex](\frac{4F}{m})=a_{2}[/tex]

Substituting the value of [tex]\frac{F}{m}[/tex] as 7.50 m/s²

Simplifying this equation, we can solve for a₂:

[tex]a_{2}=4*a_{1}[/tex]

[tex]a_{2}=4*7.50[/tex]

[tex]a_{2}=30.00[/tex] m/s²

Therefore, if the force is doubled and the object's mass is halved, the acceleration of the object will be four times the initial acceleration, or 30.00 m/s².

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The sound that you hear has a higher frequency and a shorter wavelength.

When you move towards a stationary source of sound waves, the wavelength is shortened and the frequency is increased. This is due to the Doppler Effect, which states that a wave's frequency increases as the source and observer come closer together.

The Doppler effect is a phenomenon when there is a change in the frequency of the wave due to a displacement of the source and detector/listener.

In summary, when you move towards a stationary source of sound waves, the sound you hear has a higher frequency and a shorter wavelength.

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Answer:

To find the average speed after 2 minutes, we need to calculate the total distance covered in 2 minutes and divide it by 2.

Total Distance after 2 minutes = 75m

Total Time after 2 minutes = 2 minutes

Average Speed after 2 minutes = Total Distance / Total Time

Average Speed after 2 minutes = 75m / 2 min = 37.5 m/min

Therefore, the average speed after 2 minutes is 37.5 m/min.

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The equivalent resistance of resistors in series is always greater than the individual resistances. This is because the total resistance of the circuit is the sum of the resistances, and therefore the electric current has to overcome more resistance to flow through the circuit as compared to when a single resistor is used.

To find the equivalent resistance, req, of two resistors in series, r1 and r2, the following equation is used:

Req = R1 + R2

Where Req is the equivalent resistance of the series circuit,

R1 is the resistance of the first resistor,

R2 is the resistance of the second resistor.

Resistors in a circuit are the components that oppose the flow of electric current. When two resistors are connected in series, they are connected end to end so that the electric current flows through one resistor before flowing through the second one.In a series circuit, the equivalent resistance, req, is calculated as the sum of the individual resistances of the resistors connected in series.

Therefore, to find the equivalent resistance of two resistors in series, R1 and R2, we add the resistance values of the two resistors, as shown in the formula above.

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Errors due to earth curvature and refraction can be eliminated from the differential leveling process by using the trigonometric leveling method.

This method utilizes the principle of triangles to determine the height difference between two points on the Earth's surface.

The trigonometric method begins by measuring the horizontal angle between two points, then the vertical angle between the same two points, and finally the distance between the points.

The trigonometric method is not affected by the curvature of the Earth or refraction since the vertical angle is measured at a given distance instead of the line of sight.

Therefore, the measurements of the angles and distances remain unaffected.

The trigonometric leveling process is as follows: first, an instrument is set up at point A. A second instrument is then set up at point B, and both instruments are leveled.

The horizontal angle between the two points is then measured with a theodolite, followed by the vertical angle. Lastly, the distance between the two points is measured using a tape measure.

After all the measurements are taken, the results are then used in a trigonometric formula to calculate the difference in elevation between the two points.

This method eliminates errors due to refraction or the Earth's curvature, since the elevation difference is not determined by the line of sight, but rather by the measured angles and distance.

The trigonometric leveling method is the best method to eliminate errors due to the Earth's curvature and refraction from the differential leveling process.

This method uses trigonometric principles and measurements to accurately calculate the difference in elevation between two points.

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The electrostatic force between two protons separated by a distance of 1.0 × 10^-6 m is 2.3 × 10^-8 N.

Electrostatic force is the force between two electrically charged objects. This force can either be attractive or repulsive.

It is proportional to the product of the two charges and inversely proportional to the square of the distance between them.

The force is defined by Coulomb's law which states that:

The electrostatic force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

The formula for Coulomb's law is given as:F = kq1q2/r2

WhereF is the electrostatic forcek is Coulomb's constantq1 and q2 are the charges of the two particles is the distance between the two particles in meters.

The value of Coulomb's constant is 9.0 × 10^9 Nm^2/C^2.Let's consider two protons separated by a distance of 1.0 × 10^-6 m. The charge on each proton is +1.6 × 10^-19 C.

F = kq1q2/r2F = (9.0 × 10^9 Nm^2/C^2)(+1.6 × 10^-19 C)(+1.6 × 10^-19 C)/(1.0 × 10^-6 m)^2F = 2.3 × 10^-8 N

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Assuming that it does not slip, the acceleration of the seed is 0.89 m/s².

The acceleration of the seed can be calculated using the formula for centripetal acceleration:

a = (v²) / r

where a is the centripetal acceleration, v is the velocity of the seed, and r is the distance from the axis of rotation to the seed.

To use this formula, we need to first convert the rotational speed of the turntable from rev/min to radians per second. There are 2π radians in one revolution, so:

ω = (33 1/3 rev/min)(2π rad/rev)(1 min/60 s) = 3.49 rad/s

The velocity of the seed can be calculated from the tangential velocity formula:

v = rω

where v is the tangential velocity of the seed.

Substituting the given values, we get:

v = (0.073 m)(3.49 rad/s) = 0.255 m/s

Now we can use the formula for centripetal acceleration:

a = (v²) / r

Substituting the values we have calculated, we get:

a = (0.255 m/s)² / 0.073 m = 0.89 m/s²

Therefore, the acceleration of the seed is 0.89 m/s² assuming that it does not slip.

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The potential difference between the head and the tail of a displacement vector that points at right angles to a uniform electric field is zero (0).

A uniform electric field refers to the electric field having the same magnitude and direction at all points in space. A uniform electric field is created by two parallel plates that have the same charge density and are close enough to each other that the edges can be ignored. The electric field strength of a uniform electric field is constant, which means that the direction and magnitude are the same at all points in space.

The potential difference between the head and tail of a displacement vector that points at right angles to a uniform electric field is zero (0). It is because the potential difference between two points is equal to the negative of the work done per unit charge in moving a positive test charge from one point to another point. When a displacement vector that points at right angles to a uniform electric field is moved from one point to another, no work is done because the electric field and displacement vector are perpendicular. As a result, the potential difference is zero.

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The words on the pages of a textbook and the wave of a hand your friend makes when she sees you on the street are both examples of physical phenomena.

The words on the pages of a textbook and the wave of a hand your friend makes when she sees you on the street are both examples of physical phenomena. Physical phenomena are observable events or occurrences that can be described using the scientific method. These phenomena can be observed using our senses, such as sight, touch, sound, taste, and smell, or measured using instruments, such as thermometers, scales, or cameras. For example, the wave of a hand is a physical phenomenon because it is an observable event that can be seen and measured. Similarly, the words on the pages of a textbook are physical phenomena because they are observable and can be seen and read.

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When a knowledgeable amateur astronomer tells you that she has a 14-inch telescope, the number 14 refers to the diameter of the telescope’s objective lens.

A telescope is a device used to view distant objects by utilizing electromagnetic radiation to either magnify their apparent size or gather more light than the human eye can. Telescopes are used for scientific, commercial, and amateur purposes. The telescope comprises an objective lens or mirror and an eyepiece to magnify the images created by the objective. Most telescopes have a viewfinder to make it simpler to aim the telescope precisely at the object of interest. They may also have a motorized mount to track celestial objects as they move across the sky.

Telescopes come in a variety of sizes, designs, and shapes and they range from large observatory telescopes to handheld amateur models. They are often classified into two types, reflecting and refracting telescopes and the size of a telescope is determined by the diameter of its objective lens or mirror. The bigger the diameter, the more light the telescope can collect, and the clearer the image. The diameter of the objective is the most significant aspect of a telescope when it comes to observing the heavens. For instance, a 14-inch telescope has an objective lens with a diameter of 14 inches, this large lens is capable of collecting a lot of light and providing clear images, making it a perfect tool for viewing the night sky.

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The given statement "Energy is the capacity to do work and work is anything that involves moving matter against an opposing force" is TRUE. Energy is the capacity to do work, which is defined as any action that requires the application of a force to move matter. This includes tasks such as lifting a book, pushing a door open, or running.

Energy refers to the capacity of a physical system to perform work. Energy is generally used to complete tasks, such as moving an object from one location to another, heating up or cooling down a material, or lighting up a room. Work is defined as the transfer of energy to an object via a force applied to the object over a given distance, as per the statement. Work is usually identified as the displacement of an object through a force applied to it in the direction of its displacement against an opposing force.Energy and work are two distinct but interrelated concepts in physics. Energy is the capacity to perform work, and work is the transfer of energy from one object to another through a force acting over a distance. Energy and work are both expressed in joules (J), the unit of energy in the International System of Units (SI).

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Answer:

1. goes to B.

2. goes to D.

3. goes to A.

4. goes to C.

I had to do this in 8th grade so if im wrong sorry.

If im right please mark me brainliest

The given statement "turns people upside down" and "people should not drop down" are both due to the centrifugal force.

Centrifugal force is defined as the apparent force that tends to move a rotating body away from the center of rotation. When an object moves in a circular path, a force must act towards the center of the circle to keep it moving in a circle. This force is known as the centripetal force.

The opposite force that acts to push the object away from the center of the circle is called centrifugal force. So, the given statement "turns people upside down" and "people should not drop down" are both due to the centrifugal force.


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The reason distance has a greater effect on the force of gravity between our Earth and Moon is because the distance between them is relatively large.

The reason distance has a greater effect on the force of gravity between the Earth and the Moon is because the force of gravity between two objects decreases with the square of the distance between them. This is known as the inverse square law of gravity.

The force of gravity between two objects is proportional to the product of their masses, and inversely proportional to the square of the distance between them. Mathematically, it can be expressed as,

F = G * (m1 * m2) / r^2

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them.

In the case of the Earth and the Moon, their masses are fixed, so the only variable that affects the force of gravity between them is the distance. As the distance between the Earth and the Moon increases, the force of gravity between them decreases rapidly, according to the inverse square law.

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--The complete question is, Fill in the blank, the reason distance has a greater effect on the force of gravity between our earth and moon is because the distance between them is ________________.--