a 2 kg block pulled with a force of 8 n accelorates at 2.5 m/s what is the friction

The balloon carries approximately 3.23 x 10^13 excess electrons.

To determine the number of excess electrons on the balloon, we need to use the elemental charge and the charge on the balloon.

The elementary charge, denoted e, is the charge carried by a single electron and has a magnitude of approximately 1.6 x 10^-19 coulombs.

The charge on the balloon is given as -5.16 nC (a negative charge indicates an excess of electrons).

To calculate the number of excess electrons, we can divide the charge on the balloon by the elementary charge:

Number of excess electrons = (balloon charge) / (elemental charge)

Number of excess electrons = (-5.16 nC) / (1.6 x 10^-19 C)

Calculation of this distribution:

Number of excess electrons ≈ -3.23 x 10^13 electrons

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Answer:

I think

C- It's a greenhouse gas

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg

Answer:

HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted!

In peas, yellow seed the generation of a monohybrid cross that begins when a dominant homozygote is crossed with a recessive homozygote, you would expecta. three plants with yellow seeds to every plant with green seeds.

α+β⇄ω+∨↓

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Answer: calcium chloride

Explanation: The best solute to use in the hot pack is the one with the highest maximum temperature. According to the students' data chart, mixing calcium chloride with water achieved the highest maximum temperature (60°C).

The best solute for the students' hot pack would be calcium chloride (CaCl2).

Calcium and chlorine combine to form the chemical substance calcium chloride (CaCl2). It is a tasteless, white, crystalline material that is extremely soluble in water.

This is due to the fact that calcium chloride emitted the most heat when dissolved in water, with the highest maximum temperature increase of 36°C. Also, it maintained heat for a longer amount of time since its minimum temperature of 24°C was higher than that of ammonium chloride. The maximum temperature increase for sodium acetate was significant, but its minimum temperature was the same as that of ammonium chloride. The lowest temperature difference was found for sodium chloride, showing that it did not absorb much heat when dissolved in water. Calcium chloride would therefore be the optimum solute to employ in the hot pack design the students came up with based on the data.

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Answer:

Centripetal force is when everything is fixated at the center point and is accelerated inwards towards the center. This centripetal force is assisted by inertia to remove the water from the washing machine.

Explanation:

Opacity adjusts the transparency or translucence of a shape or a layer. It is a measure of the degree to which light is allowed to pass through an object. Option B is correct.

The opacity setting is often used in graphic design and image editing software to control the visibility of layers, allowing designers to create interesting visual effects and overlays. When the opacity is set to 100%, the object is completely opaque and does not allow any light to pass through.

When the opacity is set to 0%, the object is completely transparent and allows all light to pass through. Intermediate values of opacity create varying degrees of transparency or translucence, allowing the underlying layers or background to show through to some extent.

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Here ,

object distance (u)= -1.00 cm

image distance(v)= -10.0 cm

focal length = -f

radius of curvature =r

Using concave mirror formula

Again we have

r= 2f

answer is 1.82 cm ( negative in sign)

Now magnification is

Answer is radius = 1.82cm( negative in sign) & magnification =10

Answer:

I would wanna meet juice if he was still alive ofc

Explanation:

Answer:

The pressure of the box on the floor is 200 Pa

Explanation:

Given,

Length of the box=0.5m

Width of the box= 0.1m

∴Area of the box, A= (0.5 X 0.1) sq.m

                                = 0.05 sq.m

We know,

Pressure, P= F/A

                  = 10/0.05 Pa

                  = 200 Pa

∴The pressure of the box on the floor is 200 Pa

The molecules of water determines  the macro scale appearance of the lake .

The term lake is used to describe any large body of water that is surrounded by land. We know that water is composed of molecules and the orientation of molecules affect the macro scale appearance of the water.

Hence, as the molecules of water change their orientation, the macro scale appearance of the lake changes likewise.

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Answer:

velocity

Explanation:

Unbalanced forces on an object cause it to accelerate.  Acceleration is a change in velocity over time.

Answer:

a

Explanation:

none

The Doppler technique can be used to estimate the semimajor axis of a planet's orbit by measuring the speed at which the star orbits the mutual center-of-mass of the star and planet, and using Newton's theory of gravity.

The Doppler technique, also known as the radial velocity method, is a common method for detecting exoplanets by measuring the slight wobble of a star caused by the gravitational pull of an orbiting planet. This wobble induces shifts in the star's spectral lines, which can be detected as changes in the star's line-of-sight velocity. By observing these velocity changes, astronomers can determine the speed at which the star is moving toward or away from us. This velocity change is directly related to the mass and orbital properties of the planet, including the semimajor axis of its orbit. Newton's theory of gravity provides the necessary mathematical framework to relate the observed velocity changes to the orbital parameters of the planet. By analyzing the pattern of the star's line-of-sight velocity changes over time, astronomers can estimate the semimajor axis of the planet's orbit, which represents the average distance between the planet and its host star. This information is crucial for understanding the orbital dynamics and characteristics of exoplanetary systems.

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A joint is not a wave-like undulation of rock layers in response to stress. False statement.

Instead, a joint is a type of fracture in rocks where there has been no significant displacement. The wave-like undulation you are referring to is called a fold, which occurs when rock layers are compressed and deformed under stress

A joint is a type of fracture or break in rock that occurs when there is no movement between the two sides of the fracture. Joints are formed in response to stresses such as tectonic activity or changes in temperature and pressure and are a common feature in many types of rocks.

While joints can sometimes give the appearance of a wave-like undulation in rock layers, this is not the same as a true wave-like undulation such as a fold or a fault. Folds are undulations in rock layers that result from compressive stresses that cause the layers to bend and deform, while faults are fractures in the rock where the movement has occurred along one side of the fracture relative to the other.

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Answer:

D

Explanation:

Water has a high surface tension because the water molecules on the surface are pulled together by strong hydrogen bonds. That means a drop of water will "want" to have the smallest possible surface area.

Answer:

the moment of inertia with the arms extended is Io and when the arms are lowered the moment

I₀/I > 1    ⇒   w > w₀

Explanation:

The angular momentum is conserved if the external torques in the system are zero, this is achieved because the friction with the ice is very small,

           L₀ = L_f

           I₀ w₀ = I w

          w =\(\frac{I_o}{I}\) w₀

where we see that the angular velocity changes according to the relation of the angular moments, if we approximate the body as a cylinder with two point charges, weight of the arms

          I₀ = I_cylinder + 2 m r²

where r is the distance from the center of mass of the arms to the axis of rotation, the moment of inertia of the cylinder does not change, therefore changing the distance of the arms changes the moment of inertia.

If we say that the moment of inertia with the arms extended is Io and when the arms are lowered the moment will be

        I <I₀

        I₀/I > 1    ⇒   w > w₀

therefore the angular velocity (rotations) must increase

in this way the skater can adjust his spin speed to the musician.

The heat of the surroundings is  - 4482 J.

A calorimeter is a device in which that is no exchange of heat between the device and the environment. In other words, there could only be exchange of heat when the a substance has been put inside the calorimeter.

We know that in a calorimeter;

Heat of the surrounding =  Heat of the system

That implies that they are of the same magnitude but of opposite direction hence the heat of the system is - 4482 J.

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Answer:

Batteries are intended to store chemical energy and then it converts into electricidal energy. So overall, batteries produce energy.

Explanation:

The conditions which would result in clockwise emf in loop are

a) The magnitude of B increases

c)The loop Rotates through 45 degrees about vertical axis

This all happens according to the right-hand thumb rule of electromagnetics. The EMF (Electro Motive Force) changes according to the movement of Loop as it is dependent on the motion which further connects to the right hand thumb rule as shown in the figure attached.

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The increase in internal energy of the tie and spike is approximately 1.12 Joules.

The initial kinetic energy of the spike is:

K_i = (1/2) * m * v^2

K_i = (1/2) * 0.60 kg * (1.8 m/s)^2

K_i = 1.94 J

The amount of kinetic energy that is absorbed as internal energy is:

K_absorbed = 0.578 * K_i

K_absorbed = 0.578 * 1.94 J

K_absorbed = 1.12 J

Thus,the value is 1.12 Joules.

Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.

Kinetic energy is the energy of motion, observable as the movement of an object or subatomic particle. Every moving object and particle have kinetic energy. A person walking, a soaring baseball, a crumb falling from a table and a charged particle in an electric field are all examples of kinetic energy at work.

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The region directly above the North Pole of Earth is known as the north celestial pole.The area just above the South Pole of Earth is known as the south celestial pole.The celestial sphere is completely encircled by the celestial equator, that is a projection of the Earth's equator into space.

Constellations, from the Latin meaning "collection of stars," are made up of imagined shapes that are drawn upon the celestial sphere.These constellations classify the stars into more recognizable categories.

celestial sphere, the surface of the skies that appears to be fixed with the stars.It can be regarded as a real sphere at an indefinite distance from Earth for the purposes of creating coordinates to mark actual positions of heavenly bodies.

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The north celestial pole is the area directly above the Earth's North Pole. The South Celestial Pole is the region directly above Earth's South Pole. The celestial equator, which is a projection of the Earth's equator into space, completely surrounds the celestial sphere.

Constellations are made up of imagined shapes that are drawn onto the celestial sphere. The word constellation comes from the Latin for "collection of stars." The stars are divided into more recognizable categories by these constellations. The area of the skies that seems to be fixed with stars is known as the celestial sphere.

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Answer:

Filiberto experimenta una deceleración de \(2\,\frac{m}{s^{2}}\).

Explanation:

(The problem was written in Spanish. Hence, explanation will be held in Spanish).

Asúmase que Filiberto se distrae por 2 segundos, puesto que un par equivale a dos, y que el vehículo experimenta un aceleración constante. La deceleración experimentada por el vehículo se deriva de la siguiente fórmula:

\(a = \frac{v-v_{o}}{\Delta t}\)

\(a = \frac{40\,\frac{m}{s}-90\,\frac{m}{s} }{2\,s}\)

\(a = -25\,\frac{m}{s^{2}}\)

Filiberto experimenta una deceleración de \(2\,\frac{m}{s^{2}}\).

Answer:

23.72m/s

Explanation:

The final velocity can be calculated using the formula:

V = u + at

Where; v = final velocity (m/s)

u = initial velocity (m/s)

a = acceleration due to gravity (m/s²)

t = time (s)

Based on the provided information, u = 10m/s, t = 1.4s, a = 9.8m/s²

V = 10 + (9.8 × 1.4)

V = 10 + 13.72

V = 23.72m/s

I can help you but I can't understand this language please explain it.

Answer:

Picture

Explanation:

I am trying to solve this Q

but not sure if this a correct answer

or not.

Hope this helps.

Answer:

12.161 n/m

Explanation:

Trust me bro.

Answer: 1.25 m/s²

Explanation:

The force acting on the block, F = 40 N

The acceleration of the block, a = 2.5 m/s²

The mass of the first block, m1 = unknown

The mass of the second block, m2 = 4.0 kg

From the equation F = ma, we know that the force is equal to the product of mass and acceleration.

For the first block:

F = m1a

40 N = m1 x 2.5 m/s²

m1 = 16 kg

Now we can find the total mass of the system:

m_total = m1 + m2

m_total = 16 kg + 4 kg

m_total = 20 kg

The force continues to act on the combined blocks with a total mass of 20 kg, so we can use the equation F = ma again to find the acceleration of the combined blocks:

F = m_total x a

40 N = 20 kg x a

a = 40 N / 20 kg

a = 2 m/s²

Therefore, the magnitude of the acceleration of the combination of blocks is 1.25 m/s².

The force acting on the block, F= 40 N

The mass of the first block, m1= x

The mass of the second block,m2= 4kg

From the equation F= ma, we know that the force= m*a

The acceleration speed of the block a= 2.5m/s

For the first block:

F= M*A

40 N= m1*2.5m/s

m1= 16 kg

Now we can easily find the total mass of the body:

m_total= m1+m2

m_total= 16+4

m_total= 20kg

The force continues to act on the combined blocks with a total mass of 20kg. Hence, we can use F= M*A to find the acceleration of combined blocks:

40 N= 20 kg * a

a= 40 N/20 kg

a= 2m/s

Hence, the combined magnitude of the acceleration of blocks will be 1.25m/s.

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Answer :

what is the answer options?

Explanation:

If the wind is blowing to the right at 10 meters per second, then the helicopter would need to move to the left at 10 meters per second.

When a helicopter hovers, it is essentially stationary relative to the ground and the wind that is pushing it around. The velocity, relative to the wind, that the helicopter must acquire so that it can maintain a steady position relative to the survivor at all times is equal to the velocity of the wind. In order to hover, a helicopter must create lift. When the helicopter is hovering, its lift must balance the force of gravity on the helicopter so that it stays in the air. When a helicopter is hovering, it must also fight against the wind that is pushing it around. If the wind is pushing the helicopter to the right, then the helicopter must move to the left in order to maintain a steady position relative to the survivor. In this situation, the velocity that the helicopter would need to acquire would be equal to the velocity of the wind, but in the opposite direction. So if the wind is blowing to the right at 10 meters per second, then the helicopter would need to move to the left at 10 meters per second.

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The acceleration of the object is approximately 2.38 m/s². To find the acceleration of the object, we can use the formula:

acceleration = change in velocity / time

The object goes from rest to a speed of 10 m/s in 4.2 seconds, the change in velocity is:

change in velocity = final velocity - initial velocity

change in velocity = 10 m/s - 0 m/s

change in velocity = 10 m/s

Plugging the values into the formula, we have:

acceleration = change in velocity / time

acceleration = 10 m/s / 4.2 s

acceleration ≈ 2.38 m/s²

Therefore, the acceleration of the object is approximately 2.38 m/s².

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Ten devices that use batteries are: smartphones, laptops, flashlights, digital cameras, portable speakers, electric toothbrushes , remote controls, electric shavers, handheld game consoles, and electronic toys

What are the batteries?

Here are ten devices that use cells or batteries:

Whether or not the cells or batteries used in these devices are the best choice depends on various factors such as the device's power requirements, energy efficiency, cost, and environmental impact.

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