n an object. one force is 3N to the east and the other force is 9n to the west. what is the net force acting on the object ​

In the two waves, wave a has higher frequency than that of wave b. Therefore, wave a will have longer wavelength in comparison to wave b. Thus, the correct option is A.

A wave is a kind of disturbance in a medium which carries the energy without a net movement of particles. Waves may take the form of elastic deformation, a kind of variation of pressure, electric or the magnetic intensity, electric potential, or the temperature.

Wave has different properties such as wavelength, wave number, frequency, and time period. The wavelength is the distance between the two wave crests or two troughs. The units used for the measurement of wavelength are meters (m), millimeters (mm), nanometers (nm). The frequency is the number of vibrations which passes over a given spot in the time period of one second, and it is measured in cycles per second Hertz (Hz).

Therefore, the correct option is A.

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Epsilon naught (ξ₀) is a physical constant used in electromagnetism to represent the electrical permittivity of free space.

It is a measure of the ability of a vacuum to store electrical energy in an electric field. The value of epsilon naught is approximately 8.854 x 10^-12 farads per meter (F/m).

In mathematical terms, epsilon naught is the ratio of the electric flux density to the electric field strength in a vacuum. It is used in equations for electric fields and capacitance, and is a fundamental constant in the theory of electromagnetism.

Epsilon naught is an important constant in physics and engineering, as it is used in the calculation of the electric fields generated by charged particles and in the design of electrical and electronic devices. For example, it is used to calculate the capacitance of a capacitor, which is a device that stores electrical energy.

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Answer:

bakit po pano po mag comment sa post not bat di po ako makacomment how po

Explanation:

Answer:Im doing that same quiz rn and i just put A

Explanation:

this is because EM energy is produced when electrically charged participles vibrate generating an electric filed and a magnetic field which sends out an EM wave.

i hope this helped

Answer:

Speed

Explanation:

The answer is speed. It doesn’t affect potential energy because it’s associated with position. But since kinetic energy is associated with motion speed affects it.

Answer:

Explanation:

I'm assuming you missed the decimal point in the initial velocity and that it should be 4.0 m/s. If after a half of a second it is moving a tiny bit slower, it would be because of air resistance. You can only neglect air resistance if the problems you are doing tell you neglect it.

Answer:

Air resistance

Explanation:

I got it correct on the quiz :)

If the moon orbits the Earth at a distance of 3.84 x 10⁸ on a path that takes 27.3 days to complete, its centripetal acceleration will be 2.7x 10⁻³ m/s².

A body moving in a circular path at a high rate of speed is said to be experiencing centripetal acceleration. We can calculate the moon's centripetal acceleration using the centripetal acceleration formula.

We are informed that the moon is approximately 3.84 x 10⁸ miles away from Earth and that a full rotation of the moon takes 27.3 days.

The distance traveled by the moon in 27.3 days is its velocity.

v = x/t

v = 2 πr/t

v = 2.41x10⁹/2.35x10⁶

v = 1025.5

The radius is 3.84 x 108 m and the velocity is 1,025.5 m/s. Here, we will determine the centripetal acceleration of the moon.

\(a_{c}\) = v²/r

\(a_{c}\) = (1025.5)²/3.84 x 10⁸

\(a_{c}\) = 2.7 x 10⁻³

We now know the centripetal acceleration of the moon to be 2.7 103 m/s².

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The wavelength of the first interference minimum (destructive) of the sound wave from the speakers would be 4.00 meters.

To calculate the wavelength of the first interference minimum (destructive) between two identical speakers, we can use the concept of path difference. The path difference is the difference in distance traveled by sound waves from the two speakers to the point of interference.

In this case, the person stands 6.00 m from one speaker and 8.00 m from the other speaker. The path difference can be calculated as:

Path Difference = Distance to the second speaker - Distance to the first speaker

Path Difference = 8.00 m - 6.00 m

Path Difference = 2.00 m

For the first interference minimum (destructive interference), the path difference should be equal to half the wavelength (λ/2).

λ/2 = Path Difference

λ = 2 × Path Difference

Thus:

λ = 2 × 2.00 m

λ = 4.00 m

Therefore, the wavelength of the first interference minimum (destructive) is 4.00 meters.

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Answer: Total Distance: 27 meters

Displacement: -3 meters or 3 meters to the left.

Explanation: Total distance means the total distance John traveled. In this case we can add up all the movements he made. This would be:

10+6+2+9 = 27 meters.

Displacement is the distance from the starting point after all the steps. The best way to think of this is moving left as negative and right as positive. This means

10 - 6 + 2 - 9 = -3 meters.

This means from his original starting point, he is 3 meters from the left of it after all the movements.

Hope this helped!

Answer:

Equivalent

A conversion factor is a ratio of equivalent measures

Answer:

It indicates that a force has 2 directions at the point at which they cross

Answer:

A. A field pointing in two directions

Answer: 1.232

Explanation:I remember having this as a hw and this was the answer correct me if I was wrong

From Hooke's law, the length of the spring after extension and after the mass is attached is 1.788 meters. Option B is the answer.

Hooke's law state that in an elastic material, the force applied is directly proportional to the extension provided that the elastic limit is not exceeded.

Given that a 12.0 kg mass is attached to 1.2 m long spring with a spring constant of 200.0 N/m.

The given parameters are:

According to Hooke's law

F = Ke

But F = mg

mg = Ke

Substitute all the parameters into the formula to get extension e

12 x 9.8 = 200e

e = 117.6 / 200

e = 0.588 m

The length of the spring after extension and after the mass is attached will be

\(L_{2}\) = \(L_{1}\) + e

\(L_{2}\) = 1.2 + 0.588

\(L_{2}\) = 1.788 m

Therefore, the correct answer is option B because the length of the spring after extension and after the mass is attached is 1.788 meters.

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Answer:

Newton's laws of motion relate an object's motion to the forces acting on it.

Explanation:

In the first law, an object will not change its motion unless a force acts on it. ... In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Answer:

In the first law, an object will not change its motion unless a force acts on it. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

It is more difficult to start moving a heavy carton from rest than it is to keep pushing it with constant velocity because of static friction.

Static friction refers to the resistance encountered when attempting to initiate the movement of two objects that are in contact with each other but not currently in motion relative to each other. When an object is at rest, the force of static friction acts in the opposite direction to any force applied to it.

In this case, the force applied to the carton is the force needed to start moving it from rest. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it. The only force acting on the carton is the force that is applied to keep it moving at a constant velocity. This force is equal to the force of kinetic friction which is less than the force of static friction.

To summarize, the initial effort required to overcome the static friction between a heavy carton and its resting position is greater compared to the continuous force needed to maintain its constant velocity. The force of static friction is greater than the force applied to the carton, making it difficult to start moving the carton from rest.

Once the carton is moving with constant velocity, the force of static friction is no longer acting on it, and the only force acting on the carton is the force that is applied to keep it moving at a constant velocity.

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We will have the following:

First, we are told that the wind accelerates directly northwest, that means that the angle of inclination is 45°, so the following is true:

Then:

So, the magnitude of the final velocity is approximately 81.6 m/s.

Answer:

the  total displacement of the car is 17 miles north

Explanation:

Answer: 2.21 m/s

Explanation:

Given

Coin reaches a height of  0.25 m above the launch point

Suppose u is the initial speed of the coin

Using the equation of motion

\(\Rightarrow v^2-u^2=2as\\\)

Putting values

\(\Rightarrow 0^2-u^2=2\times g\times s=2\times (-9.8)\times 0.25\\\Rightarrow u^2=4.9\\\Rightarrow u=2.21\ m/s\)

Thus, the initial velocity is 2.21 m/s

Answer:

the hopiscal is here its meeeeeeeeeee

Explanation:

Answer: factors

Explanation:

correct on accelerate ed

Answer:

We can use the formula for the transformer voltage ratio, which states that the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the output voltage to the input voltage:

Np/Ns = Vp/Vs

where Np is the number of turns in the primary coil, Ns is the number of turns in the secondary coil, Vp is the input voltage, and Vs is the output voltage.

We know that Vp = 220 V and Vs = 140 V, and we are trying to find Ns. We also know that Np = 30, since that is the number of turns in the primary coil. Substituting these values into the formula, we get:

30/Ns = 220/140

Simplifying the right side of the equation, we get:

30/Ns = 11/7

Cross-multiplying, we get:

11Ns = 210

Dividing both sides by 11, we get:

Ns = 19

Therefore, the answer is b.) 19.

Electric potential is influenced by charge and distance.

The amount of effort required to shift a unit of electric charge from a reference point to a particular place in an electric field is known as the electric potential.

Any charge in an electric field has an electric potential that is determined by the type (positive or negative), quantity, and location of the charge inside the electric field.

The potential actually grows as you get farther away from the charge, becoming less negative as you get closer to it and eventually reaching zero. The potential for both positive and negative charges is zero at infinite distances from the charge.

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Answer: tortoise

Explanation:

Given the following :

Speed of tortoise = 1m/s

Speed of hare = 3m/s

Mass of hare = 5kg

Mass of tortoise = 20kg

Momentum = product of Mass and velocity

Momentum of hare = mass of hare × Velocity of hare

Momentum of hare = 5kg × 3m/s = 15kgm/s

Momentum of tortoise = mass of tortoise × Velocity of tortoise

Momentum of tortoise = 20kg × 1m/s = 20kgm/s

Therefore, tortoise has a greater momentum than hare.

Answer:

The equations are both written in slope-intercept form, so I can see that the slope of one equation is 2 and the other is 8. If the slopes of lines are different, they will always intersect at a point.

Explanation:

As an object moves away from the surface, the speed of the c decreases proportionally to the inverse square root of the distance from the center of the planet. This is known as Kepler's Third Law of Planetary Motion, which states that the square of the period of revolution of a satellite around a planet is proportional to the cube of the semi-major axis of its elliptical orbit.

In simpler terms, the further an object is from the planet, the slower it travels in its orbit. This is because the gravitational force between the planet and the satellite decreases with distance, causing the satellite to slow down as it moves further away.As an object moves away from the surface, the speed of the satellite decreases proportionally to the square root of the distance from the center of the planet.

This phenomenon is based on the principle of conservation of angular momentum. As the distance between the satellite and the center of the planet increases, the satellite's orbital speed must decrease in order to maintain its angular momentum.Mathematically, the relationship between the satellite's speed (v) and the distance (r) from the center of the planet can be expressed as v ∝ 1/√r.

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No. A dog chasing its tail is just an animal running around in circles.

The dog's MOTION, however, IS accelerated motion, since the DIRECTION of its motion is constantly changing.

A a dog chasing its tail cannot be considered as acceleration.

Acceleration is the rate at which velocity changes over time, both in terms of speed and direction.

A point or object moving in a straight line is accelerated if it accelerates or decelerates. Even if the speed is constant, motion on a circle is accelerated because the direction is constantly changing.

For example, if a car accelerates as it turns a corner at constant speed, it is doing so because its direction is changing.

The faster you turn, the faster you accelerate. When velocity changes in magnitude (increase or decrease in speed), direction, or both, there is an acceleration.

Thus, as there is no change in either speed or direction in scenario in which a dog chases its tail, it is not considered as acceleration.

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Bottled water is drinking water packaged in plastic or glass water bottles. It can come from different sources, including natural springs, wells, or municipal supplies, and is purified and mineralized before being bottled. The disadvantages of bottled water are as follows: Bottled water is less regulated than tap water: Bottled water is regulated by the Food and Drug Administration (FDA), while tap water is regulated by the Environmental Protection Agency (EPA).

Bottled water is more expensive than tap water.FDA regulates bottled water as a food, whereas EPA regulates tap water as a utility. EPA has stricter standards than FDA for tap water contaminants. Bottled water is more expensive than tap water: Bottled water is usually sold at a higher price than tap water. Bottled water is approximately 2000 times more expensive than tap water, according to the Natural Resources Defense Council. Bottled water is less environmentally friendly than tap water: Bottled water production uses more energy than tap water, and it results in plastic waste that takes thousands of years to decompose. Bottled water is not necessarily cleaner or safer than tap water: The Natural Resources Defense Council states that around 25% of bottled water is bottled from the same sources as tap water, and some bottled water brands have been found to contain more contaminants than tap water.

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In order to have a planet that has a force of gravity similar to that of the earth, the space ship must land in Borros whose radius is half of the earth's radius and has one - fourth of the earth's mass.

The force of gravity is obtained from;

F = Gm1m2/r^2 It is an example of an inverse square law.

For another planet, Borros, the radius is half of that of the earth and the mass is one - fourth of that of the earth, hence;

F = 1/4Gm1m2/(r/2)^2

F = 1/4Gm1m2/r^2/4

F = Gm1m2/r^2

Therefore, the planet that is most similar to the earth is Borros because,  the gravity would be stronger , but since it is only one fourth the mass , the changes balance out and the gravity will be the same as on Earth.

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We need to add 1,634,320 J of heat energy to the water to bring it from 22 °C to 100 °C.

What  is Heat Energy?

Heat energy is the form of energy that is transferred between two objects or systems as a result of a temperature difference between them. It is a form of internal energy that flows spontaneously from hotter to colder matter, and it is measured in joules (J) or calories (cal). Heat energy can be transferred through three main methods: conduction, convection, and radiation.

To calculate the heat energy required to heat up the water in the soup pot, we can use the formula:

Q = mcΔT

where Q is the heat energy, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

Given:

m = 5000 g

ΔT = (100 °C - 22 °C) = 78 °C

c = 4.184 J/g·°C (specific heat capacity of water)

Q = (5000 g) × (4.184 J/g·°C) × (78 °C)

Q = 1,634,320 J

Therefore, we need to add 1,634,320 J of heat energy to the water to bring it from 22 °C to 100 °C.

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Answer:

First at all normal force

Explanation:

F= MG ( 50kg)(9.8m/s)= 490 N

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 9 \times {12}^{2} \\ = \frac{1}{2} \times 9 \times 144 \\ = 9 \times 72 \: \: \: \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

In simple harmonic motion, the speed is the greatest when: the magnitude of the acceleration is a maximum, the magnitude of the acceleration is a minimum.

In simple harmonic motion, the speed of the object undergoing the motion is greatest when the magnitude of the acceleration is at its maximum. At this point, the object is experiencing the highest rate of change in velocity, resulting in the greatest speed. This occurs when the object is passing through the equilibrium position.
Additionally, the speed is also greatest when the magnitude of the acceleration is at its minimum. At this point, the object is momentarily at the extremes of its displacement and changing direction. The object is momentarily at rest, and its speed is maximum at this instant.Therefore, both options A and C are correct: the speed is the greatest when the magnitude of the acceleration is a maximum and when the magnitude of the acceleration is a minimum.

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(1) The angular velocity at position 1 of a uniform rod rotating freely around an axis can be determined.

(2) The velocity of the center of mass at position 2.

(1) To determine the angular velocity at position 1, we need to consider the conservation of angular momentum. Since the rod is rotating freely, there are no external torques acting on it.

The initial angular momentum is zero, and at position 1, the angular momentum is given by L = Iω, where I is the moment of inertia of the rod and ω is the angular velocity. By substituting the values of mass and length of the rod into the formula for moment of inertia, we can solve for ω.

(2) To calculate the velocity of the center of mass at position 2, relative to position 1 and at an angle theta, we can use the concept of angular velocity and linear velocity. The linear velocity of the center of mass is given by v = ωr, where ω is the angular velocity and r is the distance between the center of mass and the axis of rotation. By considering the given angle theta and the length of the rod, we can determine the distance r.

Substituting the value of ω calculated in part (1) into the formula, we can find the velocity of the center of mass at position 2, relative to position 1 and at angle theta.

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