What is the net force on an object that has balanced forces acting on it?

Answer:

the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

Explanation:

Answer:

The concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

Explanation:

Answer:

its your homework

Explanation:

you aren't getting any free answers out of me because it sounds like your trying to be smart your welcome

(Not smarter than me)

The elastic potential energy of the spring is 1.6 J.

The elastic potential energy of the spring is the energy stored in the spring and it is calculated as follows;

U = ¹/₂kx²

where;

The given parameters include;

U = ¹/₂kx²

U = ¹/₂ (80) (0.2)²

U = 1.6 J

Thus, the elastic potential energy of the spring is a function of the spring constant and the extension of the spring.

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At Z ... slowest speed

At Y ... fastest speed

At X ... medium speed

Wherever it is in its orbit, the line from the planet to the Sun smears over the same amount of area every second.

That's Kepler's second law of planetary motion.

The reason this happens is: That's how gravity works. (A better explanation is available, but first you have to be able to twirl calculus and solid geometry in the air on long sticks.)

Answer:

for number 10

I can't see what needs to be calculated for the first question though

Rayleigh scattering makes the sky appear blue in the day and red during sunset.

A clear, cloudless daytime sky is blue because molecules in the air scatter blue light from the sun more than red light. Sun at sunset, appears red or orange because blue light is scattered from your line of sight.

The white light of the sun is a mixture of all the colors of the rainbow. This was demonstrated by Isaac Newton by using a prism to separate different colors to form a spectrum. Colors of light are distinguished by different wavelengths.

The visible portion of the spectrum ranges from red light with a wavelength of about 720 nm to violet with a wavelength of about 380 nm, with orange, yellow, green, blue, and indigo in between. Her three types of color receptors in the retina of the human eye are most responsive to red, green and blue wavelengths, giving us color vision.

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On the evening of December 14, 557, there was an earthquake in Constantinople. Theophanes the Confessor, John Malala's, and Agathis all wrote about this earthquake, which greatly damaged Constantinople, the capital of the Byzantine Empire at the time and located in an earthquake-prone area.

Within the intricate zone of plate collision between the Eurasian Plate and both the African and Arabian Plates, Turkey is a seismically active region. A large portion of the nation is located on the Anatolian Plate, a small plate that is bordered by the North Anatolian Fault and East Anatolian Fault, two significant strike-slip fault zones.

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This is the same height as the clown, so if he looks up at the mirror from the floor he should be able to see his feet reflected in the mirror.

Mirror is a reflective surface, typically of glass, which displays images of objects placed in front of it. Mirrors are used in a variety of different applications, including personal grooming, decoration, interior design, viewing art, scientific uses, and more. A mirror is composed of a flat, smooth surface that reflects light in a specific direction. This reflection is what produces the image we see in the mirror. The reflective surface is usually made of glass, although other materials such as metal, plastic, and wood can also be used. Mirrors can be manufactured in a variety of shapes and sizes, from small hand-held makeup mirrors to large wall-mounted mirrors. Some mirrors are also designed with special coatings or treatments to enhance their reflective properties.

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The image of the 4.0 cm tall plant is located 10 cm in front of the mirror. It is virtual, upright, and magnified.

The given problem involves the use of the thin lens equation, which relates the object distance, image distance, and focal length of a lens or mirror.

Using the equation 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance, we can solve for di. Plugging in the values given, we get:

1/20 = 1/15 + 1/di

Solving for di, we get di = 10 cm.

Since di is positive, the image is located on the same side of the mirror as the object, which means it is virtual and upright. The magnification of the image can be found using the equation M = -di/do, which gives M = -2.5. This means that the image is magnified by a factor of 2.5 compared to the object.

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The speed of the wave on a string is given by Taylor's formula:

where

F = tension force

μ = linear density = mass per unit length

But also we can say the speed of any wave is given by:

where:

λ = wave length

f = frequency

Plug the second equation in the first one. We get:

Now solve for f:

Lets say wave length is the same on the second case. Since it's the same string μ will also be the same.

See that 340 N = 2 x 170, so we can write:

"The work done when 1 mole of a gas expands isothermally from 25 L to 250 L at a constant pressure of 1 atm and a temperature of 300 K is -5744 J."

Given that,

Initial volume V₁ = 25 L

Final volume V₂ = 250 L

Number of moles n = 1

Temperature T = 300 K

We know that, Gas constant R = 8.314 J mol⁻¹ K⁻¹

W = -nRT ln( V₂/V₁)

When the values are entered into the formula, we have

⇒ -1 × 8.314 × 300 × ln(250/25) = -5744 J

Thus, the work done is calculated to be -5744 J.

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Answer:

so basically what you gotta do is, and then you can do that but you shouldn't do this

Answer:

Option D. ⁸⁵₃₆Kr

Explanation:

⁸⁵₃₅Br —> ⁰₋₁e + ?

Let ⁿₘZ represent the unknown.

Thus, the equation becomes:

⁸⁵₃₅Br —> ⁰₋₁e + ⁿₘZ

Next, we shall determine n, m and Z as follow:

85 = 0 + n

85 = n

Thus,

n = 85

35 = –1 + m

Collect like terms

35 + 1 = m

36 = m

Thus,

m = 36

ⁿₘZ => ⁸⁵₃₆Z = > ⁸⁵₃₆Kr

Thus, the equation:

⁸⁵₃₅Br —> ⁰₋₁e + ⁿₘZ

Becomes:

⁸⁵₃₅Br —> ⁰₋₁e + ⁸⁵₃₆Kr

Answer:

atomic number (Z)

Explanation:

The atomic number (Z) is equal to the number of protons in the nucleus. In a neutral atom, the number of protons is equal to the number of electrons. The mass number of an atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

HOPED THIS HELPED!!!!!

Answer:

about 2000 klm per min

Explanation:

The electric force dominate at the atomic scale while the gravitational force dominates on the large scale that includes the solar system and beyond because atomic particles have too little mass for gravitational attraction to complete with electric forces, and at large distances, individual charges have essentially no effect since overall, atoms are electrically neutral.

Electric force is described as the repulsive or attractive interaction between any two charged bodies.

Electric forces are dominant in the binding together of atoms which is made up of positively charged nuclei and negatively charged electrons. Gravity on the other hand holds the sun, the solar system, and the galaxy together.

Gravitational force is known to be the weakest, and yet the most pervasive, of the four basic forces  and it acts on all forms of mass and energy and thus acts on all subatomic particles, including the gauge bosons that carry the forces.

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Answer:

Tension force.

Explanation:

Because to exert force from each other.

Answer:

The answer is "1.0748 and 1.0875".

Explanation:

Please find the complete question in the attachment file.

The incidence angle is \(i=45^{\circ}\) for all colors When the angle is r, then use \(\frac{\sin{i}}{\sin{r}}=\frac{n_{o}}{n}\) . Snell's rule Where \(n_{o}\) is an outside material reflectance (same hue index) or n seems to be the crown glass index of the refraction, That index of inclination is \(90^{\circ}\) as the light in color shifted behaver from complete inner diffraction to diffraction.

Whenever the external channel has a thermal conductivity for the red light, that's also

\(n_{o}=\frac{n_{r}\sin{45^{\circ}}}{\sin{90^{\circ}}}=\frac{1.520\times\sin{45^{\circ}}}{\sin{90^{\circ}}}=1.0748\)

When outside the material has a refractive index, this happens with violet light.

\(n_{o}=\frac{n_{r}\sin{45^{\circ}}}{\sin{90^{\circ}}}=\frac{1.538\times\sin{45^{\circ}}}{\sin{90^{\circ}}}=1.0875\)

In point a, The only red light flows out from the leaned face and the residual colors are mirrored mostly on prism for the primary benefits \(n_{o}=1.0748\) (and slightly larger than that).

In point b, The only violet light is shown in the prism with the majority of the colors coming out from the sloping face for a scale similar to \(n_{o}= 1.0875\) (and slightly smaller than this).

Thus the closest object that the woman should be able to see while looking through the upper part of the bifocal lens would be the object that lies between 25cm of the lens.

Bifocal spectacles are specs which are created of both convex and concave lens. The upper part is made up of the concave lens while the lower part consists of convex lens.

When looking through the upper part of the bifocal lens the objects at a little distance become clearer as the upper part of bifocal lens consists of diverging lens that is used to correct distant or vision at some distance.

There are two types of lens the converging or convex lens and the diverging lens or concave lens.

Convex lens is called the converging lens as a two parallel rays of light when passing through a convex lens get bent towards each other and converge at some point.

Concave lens is called the converging lens as two parallel rays on passing through the concave lens get diverged from each other.

The clearest image that is formed by a concave lens is when the object lies between the focal point and the lens, where the image is formed at the focal point on the image side of the lens.

Thus the closest object that she would be able to see is the object that she would be able to see clearly would be the object that lies between 25cm of the lens.

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Answer:

Fn = 50 N

Explanation:

Net Force

The net force is the sum of all the forces acting on an object.

When all the forces act in a single line, the direction of the forces is given by their signs. Positive signs are assumed to be up and left on both axes.

The box being raised by a force has a weight of W=-125 N. The negative sign indicates the weight points down. The accelerating force goes up and its value is F=175 N. The positive sign indicates this force pushes the box up.

The forces acting on the box are:

The weight W=-125 N

The accelerating force F=175 N

The net force is

Fn = W + F = -125N + 175 N

Fn = 50 N

Answer:

B

Explanation:

The force and friction cancel each other.

20N - 20N = 0N acting on the object.

(a) The position of the object is 35.0 cm from the convex lens.

(b)  The focal length of the lens is -122.5 cm.

(a) To find the position of the object, we can use the magnification equation:

Magnification = Height of the image / Height of the object

where:

m = Magnification

h_i = Height of the image

h_o = Height of the object

Given:

Height of the image (h_i) = 35.0 cm

Height of the object (h_o) = 25.0 cm

Plugging in these values, we have:

m = 35.0 cm / 25.0 cm = 1.4

The magnification is also equal to the ratio of the image distance to the object distance:

m = -d_i / d_o

we use the equation:

m = d_i / d_o

Plugging in the given values, we have:

1.4 = 49.0 cm / d_o

Solving for d_o:

d_o = 49.0 cm / 1.4

d_o ≈ 35.0 cm

Therefore, the position of the object is approximately 35.0 cm from the convex lens.

(b) To find the focal length of the lens, we can use the lens formula:

1/f = 1/d_i - 1/d_o

Given:

d_i = 49.0 cm

d_o = 35.0 cm

Plugging in these values, we have:

1/f = 1/49.0 cm - 1/35.0 cm

Simplifying the equation, we get:

1/f ≈ (35 - 49) / (49 * 35) \(cm^{-1\)

Calculating the right side of the equation, we have:

1/f ≈ -14 / (1715) \(cm^{-1\)

The reciprocal of both sides:

f ≈ - (1715) cm / 14 \(cm^{-1\)

Therefore, the focal length of the lens is approximately -122.5 cm (or 122.5 cm with a negative sign indicating a convex lens).

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The correct answer is e. None of the above alternatives gives a true statement. None of the statements in options a, b, c, and d are true when it comes to a modulus M over a ring R having a finite basis.

When a modulus M can be formed entirely from a finite set of elements, the modulus M is said to be finitely generated. M's finite basis does not, however, automatically imply that M is finitely generated. A basis is a set of linearly independent elements, and it might not be enough to produce all of the components of the modulus.

According to the assertion in option b, M must include nonzero items of nonzero order if it has a finite basis. This is untrue, though. The smallest positive number k, such that the element raised to the power of k equals the identity element, is referred to as the order of an element.

According to option c, every non-null element in a modulus with a finite basis has a null. Nevertheless, this claim is likewise untrue. It is possible for a modulus with a finite basis to have non-null elements without a null element.

According to option d, a ring R is a body, or a field, and only then can a modulus have a finite basis. However, this assertion is also untrue. Even though the ring R is not a field, a modulus can nonetheless have a finite basis. None of the given alternatives provides a true statement about a modulus M over a ring R having a finite basis.

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The answer is B.  \(1.9 × 10^-4 J\)when A charge of 24 µC is at a location where the electric potential is 8.0 V.

Electric potential, also known as voltage, is a scalar physical quantity that describes the amount of electric potential energy per unit charge present at a point in space or at a point in an electric circuit. It is measured in volts (V).

The electric potential energy of a charge q in an electric potential V is given by the equation:

U = qV

where U is the electric potential energy in joules (J), q is the charge in coulombs (C), and V is the electric potential in volts (V).

Using this equation and the given values, we can calculate the electric potential energy of the charge:

\(U = (24 × 10^-6 C) × (8.0 V) = 1.9 × 10^-4 J\)

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Given:

Energy = 1 kWh

Voltage = 220 Volts

Let's find the amount of electric current that must flow through the light bulb.

To find the amount of electric current, apply the formula:

Where:

P is the power in watts = 1 kWh = 1000 Watts

V is the voltage = 200 V

I is the electric current.

Rewrite the formula for I and solve:

Therefore, the amount of electric current that must flow through the light bulb is 4.5 Ampere

ANSWER:

4.5 A

Answer:

-2.6

Explanation:

it’s for Acellus

The charge with magnitude and sign is -2.6 x 10⁻⁷ C.

The field developed when a charge is moved. In this field, a charge experiences an electrostatic force of attraction or repulsion depending on the nature of charge.

Given, the electric field 1.22 m from charge is 1570 N/C, pointing

toward the charge.

The electric field and charge is related as

E = kq/r²

q = Er²/k

where k = 9 x 10⁹ N.m²/C²

Substitute the given values in the question, we have

q = 1570 x (1.22)² / 9 x 10⁹

q= 2.6 x 10⁻⁷ C.

Thus, the magnitude and sign  of charge is -2.6 x 10⁻⁷ C.

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Standing waves in water are produced most often by periodic water waves reflecting from a barrier. So, option B is correct alternative.

Nodes and antinodes serve as the defining features of standing waves. The particle's amplitude of vibration is greatest at its antinodes and least at its nodes. Different patterns can be created by the vibration of a string. Each pattern is known as a harmonic because it correlates to a specific frequency's vibration. The fundamental frequency, also known as the first harmonic, is the frequency at which the string vibrates at its lowest level and produces a standing wave. The frequency of each harmonic is determined by the wave's wavelength and speed.

Standing waves have the following traits:

1) The standing waves remain still. No direction is affected by the disturbance.

2) Nodes, or points of zero amplitude, and antinodes, or places of greatest amplitude, are characteristics of standing waves.

3) There won't be any energy flowing through the medium at all.

4) At the node and antinodes, respectively, the pressure change is greatest.

5) Any particle in the medium oscillates with a period that is identical to the component waves.

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Answer:

I'm sorry, but as an AI language model, I don't have a PE textbook to access the "Healthy Lifestyle Questionnaire" on page 413. However, I can tell you that the questionnaire is a self-assessment tool designed to help individuals evaluate their current lifestyle habits and identify areas for improvement. It covers topics such as physical activity, nutrition, stress management, and sleep. The score obtained from the questionnaire can provide insight into one's overall health and well-being. If you have access to the questionnaire, I encourage you to take it and reflect on your score to identify areas where you can make positive changes to improve your health and well-being.

The questionnaire on healthy lifestyle will be used to assess an individual's lifestyle habits such as including exercise, nutrition, sleep, stress and substance use.

This questionnaire can reveal information about people lifestyle habits because its provids insight into areas where changes need to be made to improve overall health and well-being.

When a respondent answers question about issues like exercise, nutrition, the researchers can gain understanding of their current habits and identify areas where they may need to make changes.

Therefore, the information derived therein can then be used to develop a personalized plan for improving health and achieving wellness goals.

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The correction slope of the level controller is b. 10. The direct action level controller in the tank is set with a gain of 1 and a reset of 1 minute. When the level in the tank rises 20 percent above the setpoint, the signal to the controller also increases by 20 percent.

The level controller has to establish a correction slope of percent per b. 10. When the level of the tank rises, the controller takes action to reduce it by lowering the flow rate of the incoming fluid. If the set point is too low, the controller opens the valve or pump to allow more fluid into the tank, raising the level. It will also increase the flow rate when the set point is too low. The controller's slope is used to control the rate at which the controller increases or decreases the flow rate to control the tank's level. Hence, the correct option is b. 10.

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