please answer these, id really appreciate it

The magnitude of their mutual electrostatic force changes by factor n. The square of the distance is negatively correlated with both forces, as can be observed. In both instances, the factor is therefore the same.

Two charges positioned apart are subject to the electrostatic force. The size of each charge and the separation between them determine how much electrostatic force there will be. When two charges of the same type are brought together, whether positive or negative, they repel one another.

Positive and negative charges can affect one another, as we are aware. The magnitude of the electrostatic force, however, serves as a gauge for this interaction's strength. The magnitude of the electric charges as well as their separation from one another are what generate this force.

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Assuming the acceleration is positive in the upward direction.

For the time, t=0 seconds to t=10 seconds, the acceleration of the rocket is 5 m/s^2 which is constant.

So, the required t  acceleration time graph is a horizontal straight line from t=0 to t=10 seconds, as shown

In bright light, the iris constricts and the pupil shrinks to control the amount of light entering the eye.

In bright light, the iris constricts and the pupil shrinks to control the amount of light entering the eye.

The iris is the colored part of the eye surrounding the pupil. It contains muscles that can adjust the size of the pupil. When exposed to bright light, the muscles in the iris contract, causing the pupil to constrict or become smaller in size.

By constricting the pupil, less light is allowed to enter the eye. This helps to protect the sensitive structures within the eye from excessive light intensity, preventing potential damage. It also helps to improve the clarity and sharpness of vision by reducing the amount of light scattering in the eye.

On the other hand, in dim light conditions, the iris relaxes its muscles, allowing the pupil to dilate or expand. This allows more light to enter the eye, maximizing the amount of available light for vision in low-light situations.

So, in bright light, the iris constricts and the pupil shrinks to control the amount of light entering the eye, while in dim light, the iris relaxes and the pupil dilates to allow more light to enter.

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Explanation:

The materials which are more resistant to electricity are called insulators. Materials like wood, plastics, rubber etc are insulators. They can be used in protective coatings.

There are three type of materials based on their conductivity. Substances which are most conductive at room temperature are called conductors. Materials which are not conducting at normal conditions but can conduct at higher temperature or on doping are called semiconductors.

Materials which are not conducting at any condition are called insulators. Insulators are thus resistant to electricity or to the passage of electrons. Metals are all conductors. Silicon and germanium are examples of semiconductors.

Materials like wood, plastics, rubber, glass, and other ceramic materials are insulators. Insulators can be used as protective coating from electric shock.

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Answer:

18

Explanation:

12 - 5 + 8 = 15

12 - 8 = 4

7 - 4 = 3

15 + 3 = 18

The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

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Ignoring the mass of duct tape and plastic in the bottles, a child will need at least 4 water bottles to stay dry on the raft. The child will need at least four water bottles to stay dry on the raft.

The buoyancy force exerted by the water on the raft must be greater than or equal to the weight of the child to keep the child afloat and dry on the raft. The buoyancy force is given by Archimedes' principle, which states that it is equal to the weight of the water displaced by the raft.

The volume of each 1.0 L water bottle is 0.001 m^3. The density of water is approximately 1000 kg/m^3. Therefore, each water bottle has a buoyant force of:

Buoyant force = Volume of water displaced x Density of water x Acceleration due to gravity

Buoyant force = 0.001 m^3 x 1000 kg/m^3 x 9.81 m/s^2

Buoyant force = 9.81 N

To find the minimum number of water bottles needed to keep the child afloat, we need to divide the weight of the child by the buoyant force of one water bottle:

Minimum number of water bottles = Weight of child / Buoyant force per bottle

Minimum number of water bottles = 32 kg / 9.81 N

Minimum number of water bottles = 3.26 (rounded up to 4)

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The truck's initial velocity is 80.0 km/h. When it hits the gravel patch, it experiences a negative acceleration of -5.0 km/h/s. This means that the truck's velocity will decrease by 5.0 km/h every second.

To find out how far the truck travels before slowing to 20.0 km/h, we need to use the equation:

v^2 = u^2 + 2as

Where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled.

First, we need to convert the units of the velocities and acceleration to m/s:

Initial velocity, u = 80.0 km/h = 22.22 m/s
Final velocity, v = 20.0 km/h = 5.56 m/s
Acceleration, a = -5.0 km/h/s = -1.39 m/s^2

Now we can plug these values into the equation:

(5.56)^2 = (22.22)^2 + 2(-1.39)s

Solving for s, we get:

s = (5.56)^2 - (22.22)^2 / 2(-1.39) = 346.8 m

Therefore, the truck will travel 346.8 meters before slowing down to 20.0 km/h.
Hi! I'd be happy to help you with this problem. We will use the following terms: truck, accelerate, and consider the scenario in less than 100 words.

1. Identify the given values:
Initial velocity (v0) = 80.0 km/h
Final velocity (vf) = 20.0 km/h
Acceleration (a) = -5.0 km/h/s

2. Use the formula vf² = v0² + 2*a*d to find the distance (d) traveled:
(20.0)² = (80.0)² + 2*(-5.0)*d

3. Solve for distance (d):
400 = 6400 - 10d
6000 = 10d
d = 600 km

The truck will travel 600 km before it slows to 20.0 km/h.

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Answer:

It would stretch about 6 inches, but it depends on the metal.

Explanation:

pls mark brainliest with the crown

Answer:

Power is the rate which work is done.

Explanation:

Power is the rate which work is done. Power is measured in watts.

Work is the use of force to move an object. Work is measured in joules

The speed of a waveform can be calculated by the number the crests who pass through a given location in a given period of time. A is the proper answer.

The frequency with which a sound level wave repeats itself all the second is its frequency, which is often referred to as pitch.The sound's frequency is the opposite of its period. if a wave has a short wavelength. Undoubtedly, the wave will have a lower number. Lower frequency is indicated by a longer wavelength.

The speed of something like the vibration, or frequency, determines the sound's pitch. It is only applicable or relevant for musical when the waveform is extremely regular. Frequency

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We will see that the ant's displacement is 8.33 cm

We define displacement as the magnitude of the difference between the final position and the initial position.

Here we can assume that the initial position of the ant is the point (0 cm, 0cm), where east is the positive x-axis and north is the positive y-axis.

Then, the ant moves south a distance of 5.0 cm, then the new position is:

p = (0cm, -5cm)

Finally, the ant moves southwest for 4cm, the components of this motion are:

Then the final position of the ant is:

(0cm - 2.83cm, -5cm - 2.83cm) = (-2.83cm, -7.83 cm)

The displacement is then:

\(D = \sqrt{(-2.83cm - 0cm)^2 + (-7.83cm - 0cm)^2} = 8.33 cm\)

So the displacement is 8.33 cm

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Answer:

I believe this represents Newton's first law of motion. Any object in motion will continue to move until a force stops it, be it friction or a physical object.

Es A Porque la estadística se refiere a esi

Explanation:

espero que te ayude

The maximum charge on the capacitor is Q = 16.7μC

To find the maximum charge on the capacitor in an LC circuit, we need to use the formula for the charge on a capacitor in an oscillating circuit:

Given

Capacitance , C = 30 μF

Inductance , L = 15 mH

At time t = 0, the Charge on the capacitor is, q = 10 μC

Current , i = 20 mA

First, we will calculate the total energy in the circuit is

\(\[U = \frac{{q^2}}{{2C}} + \frac{{Li^2}}{{2}}\]\)

\(\[U = \frac{{(10 \times 10^{-6} \, \text{C})^2}}{{2 \times (30 \times 10^{-6} \, \text{F})}} + \frac{{(15 \times 10^{-3} \, \text{H}) \times (20 \times 10^{-3} \, \text{A})^2}}{{2}}\]\)

\(\[U = 1.67 \times 10^{-6} \, \text{J} + 3.0 \times 10^{-6} \, \text{J}\]\)

U = 4.67 × 10⁻⁶ J

The maximum charge on the capacitor is

Q = √2UC

\(\[Q = \sqrt{2 \times (4.67 \times 10^{-6} \, \text{J}) \times (30 \times 10^{-6} \, \text{F})}\]\)

Therefore, the maximum charge on the capacitor is Q = 16.7μC

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Answer:

A

Explanation:

Amplitude = height of the wave = 1

Wavelength = 3

They are slightly shifted.

The first statement is the correct one.  Don't make me type the whole thing out.

The given statement "When an RC circuit is connected across a DC voltage source through an open switch, the capacitor initially has no charge." is true. As soon as the switch is closed, the capacitor begins to charge up.

The voltage across the capacitor increases linearly with time, following an exponential curve that depends on the values of the resistance and capacitance in the circuit. This charging process continues until the capacitor is fully charged, at which point the voltage across the capacitor is equal to the DC voltage source. Therefore, we can say that the capacitor charges linearly as a function of time in an RC circuit connected across a DC voltage source through an open switch.

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The energy that travels in waves across space as well as through matter is called  electromagnetic radiation.

Electromagnetic radiation (EM radiation) is a type of energy that is propagated through space as well as through matter in the form of waves. It is composed of oscillating electric and magnetic fields that are perpendicular to each other and to the direction of wave propagation. EM radiation has a wide range of wavelengths and frequencies, ranging from very long radio waves to extremely short gamma rays.

The different types of EM radiation are classified according to their wavelengths or frequencies, and include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. EM radiation has many applications in science, technology, and medicine, such as in telecommunications, spectroscopy, imaging, and cancer treatment.

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☄ Universal Gravitational Constant(G)

Gravitational constant is a constant of proportionality when F(Gravitational force) is proportional to product of masses and inversely proportional to the distance between them.

The value of G (universal gravitational constant) was found out by the scientist Henry Cavendish by using the sensitive torsion balance\(.\)

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Answer:

Here is the answer. Hope this helps you!

Explanation:

Now, from Universal law of gravitation, we come to know that:

F= force of attraction

M = the object with greater mass (taken from centre of the objects)

m = object with smaller mass (taken from centre of the objects)

d = distance (taken from centre of the objects)

F ∝ Mm

F ∝ 1/d²

Therefore, we get the formula

F ∝ Mm/d²

F = GMm/d²

Here, G is the constant of proportionality. It also accepted as the Universal gravitation constant. It has a value of 6.67*10^-11 Nm^2/kg^2.

The universal gravitation constant has allowed us to use the above formula to help us calculate and come to know about

Answer:

Explanation:

 Given:

L  = 881.0  m

F = 28.0 N

___________

A - ?

The work :

A = L*F = 881.0 * 28.0 ≈ 24 670  J

Answer:

240N

Explanation:

The formula for force is F=mass×acceleration.

Therefore, Force= 120×2= 240N

Given data

*The given height under the ocean surface is h = 12.3 m

*The given density of ocean water is D = 1025 kg/m^3.

*The value of the acceleration due to the gravity is g = 9.8 m/s^2

The formula for the pressure on a fish 12.3 m under the ocean surface is given as

Substitute the known values in the above expression as

The aurora is a natural light display in the sky, typically seen in high-latitude regions (around the poles). It is caused by the collision of charged particles from the sun with atoms in the Earth's atmosphere.

The aurora requires four things to appear:

Solar wind: The aurora is triggered by the solar wind, which is a stream of charged particles from the sun.

Earth's magnetic field: Earth's magnetic field guides the charged particles from the solar wind towards the poles, where they collide with atoms in the atmosphere and produce the aurora.

Atmosphere: The aurora is formed when charged particles from the solar wind collide with atoms in the Earth's atmosphere. These collisions release energy, which is typically seen as a light show.

Location: The aurora is typically seen in high-latitude regions (around the poles). This is because the Earth's magnetic field is strongest at the poles, which means that the solar wind particles are more likely to be guided there.

Venus does not have a strong magnetic field. This means that the solar wind particles are not guided towards the poles, and so they are unable to collide with atoms in the Venusian atmosphere and produce an aurora.

The magnetic field on Venus is around 20,000 times weaker than that on Earth. This is because Venus does not have a molten iron core, which is the source of Earth's magnetic field.

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Answer:

Your average velocity would be 20 m/s.

Explanation:

hope this helped!

The path of a charged particle moving parallel to a uniform magnetic field will be straight line

Force on a charged particle moving in a magnetic field can be calculated by = q.(v*B )

q = charge of the particle

v = velocity of the particle

B = magnetic field

theta = angle between v and B

q . (v B sin (theta) )

Since,  particle is parallel to the magnetic field

hence , theta = 0°

so sin(theta) = sin 0° = 0

hence , force = 0

since , there is no force acting on the particle it will remain in that motion in hat it was when it initially came in the magnetic field . Hence It will be moving along a straight line path because the magnetic force on the charged particle is zero.

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Potential energy is transformed into kinetic energy its correct trust me have a nice day! :)

Answer:

An example of a hypothesis based on observation and scientific principles is:

Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.

A hypothesis is an informed prediction or a tentative statement about what you think that would occur in a scientific experiment as a result of experience from observations accepted by scientific rules and law.

A hypothesis is a testable statement obtained from the research question but questions cannot be tested directly, it is the proposed relationship between the variables that are tested.

An example of a hypothesis is:

Deaf children whose parents are deaf will acquire language faster than deaf children whose parents are not deaf.

This specifies the direction of the hypothesis because one group is faster than the other.

Explanation: