A 6 kg block sits at rest on a frictionless horizontal table. A 13 N horizontal force is suddenly applied to the block and maintained as the block begins movingA)What is the acceleration of the block after the force is appliedB)What is the speed of the block after it has moved a distance of 0.5 m?

One example of a chemical that is frequently applied just prior to filtration is a coagulant.

Coagulants or flocculants are chemicals that are commonly used in water and wastewater treatment processes to aid in the removal of suspended particles, colloids, and other impurities from water or wastewater. These chemicals are typically added just prior to the filtration step in the treatment process.

Coagulants are substances that cause destabilization and aggregation of suspended particles and colloids in water, leading to the formation of larger particles called flocs. These flocs can be easily removed by sedimentation or filtration. Common coagulants used in water treatment include aluminum sulfate (alum), ferric chloride, and polyaluminum chloride (PAC).

Flocculants, on the other hand, are substances that promote the aggregation of smaller flocs into larger, settleable flocs. They help to speed up the sedimentation process and improve the efficiency of solid-liquid separation. Flocculants are typically used in conjunction with coagulants to enhance the overall performance of the water treatment process.

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Answer:

1.31×10⁻⁴ C or 131 μC

Explanation:

From the question,

Applying Coulomb's Law,

F = kqq'/r²..................... Equation 1

Where F = Force between the charges, q = first charge, q' = second charge, r = distance between the charges, k = coulomb's constant.

make q' the subject of the equation

q' = F×r²/(kq)

q' = Fr²/kq................ Equation 2

Given: F = 1240 N, r = 16.4 cm = 0.164 m, q = 28.4 μC = 2.84×10⁻⁵ C,

Constant: k = 8.98×10⁹ Nm/C²

Substitute these values into equation 2

q' = (1240×0.164²)/[(2.84×10⁻⁵)×(8.98×10⁹)

q' = (33.35104)/(25.5032×10⁴)

q' = 1.31×10⁻⁴ C

q' = 131 μC

The acceleration of a proton at rest at point d is indicated by the magnitude of the magnetic field in the image, which is decreasing at a rate of 0.3 up and 2.0 cm down and a=0 horizontally to the right. Part G

The area where the force that magnetism acts around with a magnetic material or even a moving electric charge is known as the magnetic field. Moving electric charges plus magnetic dipoles combine to form a magnetic field, which acts as a force field on other adjacent moving charges & magnetic dipoles. Magnetic compass needles as well as other permanent magnets align in the direction of magnetic fields like the one found on Earth. Electrically charged particles are moved in a helical or circular pattern by magnetic fields.

Electric charges in motion create magnetic fields. Every object is made of atoms, and each atom has an electron-orbiting nucleus made up of protons and neutrons. Because the orbiting electrons have minuscule moving charges, each atom generates a very weak magnetic field.

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An LED light bulb is favoured because it is more bright.

An LED light is favored over an incandescent light bulb because it is more bright than the incandescent bulb.

An LED is a light emitting diode. It is used widely for the production of light because it shows some advantages which include:

Many traditional lighting systems like the incandescent bulbs turn more than 90% of the energy which they use to heat, allocating only about  10% of energy to actual light production. LEDs emit almost no heat energy, and most of the light energy they emit is within the visible spectrum.

LEDs use much less energy than that of incandescent bulbs because the diode light is much more efficient, power-wise, than the filament light. LED bulbs use more than 75% less energy than those of incandescent lighting.

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The magnitude of the average acceleration of the driver during the collision is 386.87 m/s².

The magnitude of the average acceleration of the driver during the collision is calculated as follows;

v² = u² + 2as

where;

When the car stops, the final velocity = 0

0 = u² + 2as

-2as = u²

a = - (u²) / 2s

a = - ( 26.39² ) / ( 2 x 0.9 )

a = -386.87 m/s²

| a | = 386.87 m/s²

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The total electric potential will be 4.50 ×10⁴ V. The potential difference is the difference in electric potential between two charged substances.

The amount of work performed in an electrical field to move a unit charge from one location to another is defined as the electrical potential difference.

The distance between all charges and the center is the same. The 10,500 mC, 11.50 mC, 21.00 mC, and 20,500 mC charges neglect each other's potentials.

Hence, the total electric potential will be 4.50 ×10⁴ V.

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Answer:

Because of the interstellar dust and interior location of the solar system.

Explanation:

We will probably not be able to detect the neutral hydrogen that gives rise to the 21-cm radio signal if we point a large optical telescope to the region because, the interstellar dust obscures the location of the spiral arm of the Milky way galaxy and this makes neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

Also, the interior location of the solar system also makes the neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

So, the interstellar dust and the interior location of the solar system makes it difficult to detect the neutral hydrogen that gives rise to the 21-cm radio signal with a large optical telescope.

Answer:

the power (outside) of the train must be increased for the increase in resistance by the weight component.

Explanation:

We analyze the movement of the train at constant speed, on flat ground the force of the motor must counteract the friction force that opposes the movement, therefore to maintain the constant speed the two forces must be of the same magnitude.

When the train goes up a slope, it is subjected to two forces: the friction force that opposes the movement and a component of the weight in the opposite direction to the movement, therefore the power (outside) of the train must be increased for the increase in resistance by the weight component.

Answer:

the pressure will decrease by 1/2

Explanation:

PV=nRT

P=(nRT)/(V)

nRT are all constant so they will equal 1

V is 2

P=1/2

Answer:

7.07 s

69.3 m/s

Explanation:

Taking the negative direction to be down and the positive direction to be up:

We have 3 variables in the y-direction and can solve for time.

Use this kinematics equation to solve for time.

It will take the ball 7.07 s to reach the ground.

We can solve for final velocity using the same variables in the y-direction:

Use this kinematics equation to solve for final velocity.

The ball will be traveling at a speed of 69.3 m/s at the instant before it reaches the ground.

The phase of the moon changes as it orbits around the Earth. It takes approximately 29.5 days for the moon to complete one orbit.

Therefore, if the moon is highest in the sky this morning at 6:00 am, one week from now it will be approximately halfway through its orbit. This means that the moon will be in its third quarter phase. During the third quarter phase, the moon appears as a half-moon in the sky with the right side illuminated.

This phase occurs when the moon is between the last quarter phase and the new moon phase. As the moon continues to orbit the Earth, it will eventually reach the new moon phase, where it appears completely dark in the sky. The cycle then repeats itself as the moon moves from new moon to full moon and back again. Understanding the phases of the moon can be helpful in planning outdoor activities and understanding the natural rhythms of the Earth and its satellite.

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A. Water behind a dam an example of potential energy

The energy an individual or an item has as a result of motion—in this case, the motion of the falling apple—is known as kinetic energy. Potential energy, which exists in a bike that is parked on top of a hill, is converted to kinetic energy when you start riding it downhill.

Kinetic energy may be observed in anything that moves around the house. This might happen when a glass breaks after falling off the counter, a fan circulates air on a warm day, or a cue ball rolls on a pool table. Kinetic energy is used by on-turning electrical equipment as well as by individuals moving around the house.

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The refracting telescope uses large lenses. The larger lenses increase the weight of the telescope. The weight of the refracting telescopes makes it difficult for the observer to keep them aligned.

Thus the correct answer is option b, refracting telescopes.

Answer:

Is Reflecting telescope

Explanation:

I took the test

Answer:

L1 F1 = L2 F2   explains balancing torques

F1 = load = counterclockwise torque

F2 = applied force - clockwise torque

L represents distances from fulcrum to the applied forces

F2 = F1 * (L1 / L2)                (I)

MA mechanical advantage = (L2 / L1)     load over applied force

We can rewrite equation (I) as

load force / applied force = applied distance / load distance

As the fulcrum is moved closer to the load L1 decreases and L2 increases which corresponds to an increase in MA

Answer:

A. A coil of wire with current running through it

Answer:if you have different ans your may be a soleno with a current running though it.

Explanation:

Ape.x

Answer: 6.25 m/s^2

Explanation:

The distance between Vinny and the ramp is 200m

And he has 8 seconds (At max) to reach that distance.

The initial velocity is 0m/s

The initial position is 0m

Now, we want to find the constant acceleration in order to do this, so suppose that we have a constant acceleration A.

a(t) = A.

To have the velocity, we must integrate over time, and remember that the constant of integration is equal to zero because the initial velocity is zero.

v(t) = A*t

For the position, we integrate again over time.

p(t) = 0.5*A*t^2

And we want to travel 200m in 8 seconds, then:

p(8s) = 200m

0.5*A*(8s)^2 = 200m

A*32s^2 = 200m

A = 200m/32s^2 = 6.25 m/s^2

This is the minimum acceleration in order to do this, if Vinny has a larger acceleration he will travel the 200m in a smaller time.

Answer:

-89.22 C and 183.94 K

Explanation:

TC= (-128.6 - 32) / 1.8 = -89.222222 C

TK= -89.22 + 273.16 = 183.94

The conversion of −128.6°F temperature in degree centigrade -89.22 is

and to kelvin is 183.94 k

Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water, the interval between the two being divided into 180 parts.

The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture

and selected the values of 30 and 90 for the freezing point of water and normal body temperature, respectively; these later were revised to 32 and 96, but the final scale required an adjustment to 98.6 for the latter value.

To convert from fahrenhiet to degree celcius

\(T_C= \dfrac{(-128.6 - 32) }{ 1.8} = -89.222222 \ ^oC\)

To convert from kelvin to degree

\(T_K= -89.22 + 273.16 = 183.94\ k\)

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Answer:

El equilibrio térmico se alcanzará a los 152ºC.

Explanation:

Dado que un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º, para determinar a qué temperatura se alcanza el equilibrio térmico se debe realizar el siguiente cálculo:

2+5 = 7

(200 x 5 + 32 x 2) / 7 = X

1064 / 7 = X

152 = X

Por lo tanto, el equilibrio térmico se alcanzará a los 152ºC.

Answer:

Volume = 112cm^2

Density = 0.45 g/cm^2 (2.s.f)

Explanation:

Volume of a cube is found by multiplying its height by its length by its width.

We are given the values: l = 7cm, w = 8cm, h = 2cm, so to find the volume we just need to multiply them all together:

V=lwh

V = (7)(8)(2)

The volume of the cube = 112cm^2

Density is found by dividing mass by volume.

We are given the mass (50 grams) and we have just found the Volume (112cm^2), so we can just divide them to find the density:

p (symbol for density) = m/v

p = (50)(112)

The density of the cube is 0.45 g/cm^2 (2.s.f.)

Hope this helped!

Answer:

bounces off the mirror at the same angle it hits the solid surface.

Explanation:

According to the Law of Reflection, a light ray strikes a mirror at the point of incidence bounces off the mirror at the same angle it hits the solid surface.

The incident ray and the reflected ray lie in the same plane

The angle of incidence is equal to the angle of reflection as a ray of light reflects off a solid surface.

So,

correct answer is ''bounces off the mirror at the same angle it hits the solid surface.''

Answer:

Galileo Galilei developed the first ever telescope

Answer:

The distance the box traveled down the plane is 19.28 m

Explanation:

The angle of repose, α, is given by the relation;

tan⁻¹(μ) = α

tan⁻¹(0.1) = 5.7°

Therefore, we have;

M·g·sin(θ) - μ·N = M·a

Where:

M = Mass of the box = 10 kg

g = Acceleration due to gravity = 9.81 m/s²

θ = Angle of inclination of the plane = 30°°

μ = Coefficient of friction = 0.1

a = Acceleration of the box along the incline plane

N = Normal force due to the weight of the box = M·g·cos(θ)

10 × 9.81 × sin30 - 0.1 × 9.81 × cos(30)  = 10 × a

48.2 = 10 ×a

a = 48.2/10 = 4.82 m/s²

The distance, s, traveled by the box is given by the relation;

s = u·t + 1/2×a·t²

Where:

u = Initial velocity = 0 m/s

t = Time of motion = 2.0 s

∴ s = 0×2 + 1/2 × 4.8 × 2² = 19.28 m

The box traveled 19.28 m down the plane.

The distance that the box travels down the plane is 8.1 m.

The given parameters;

The acceleration of the box is calculated as follows;

\(\Sigma F_{net} = ma\\\\mgsin\theta - \mu mg cos\theta = ma\\\\gsin\theta - \mu g cos\theta = a\\\\g(sin\theta - \mu cos \theta ) = a\\\\9.8(sin30 \ - \ 0.1\times cos 30) = a\\\\9.8(0.413) = a\\\\4.05 \ m/s^2 = a\)

The distance traveled by the box down the plane is calculated as follows;

\(s= ut + \frac{1}{2} at^2\\\\s = 0 + \frac{1}{2} \times 4.05 \times 2^2\\\\s = 8.1 \ m\)

Thus, the distance that the box travels down the plane is 8.1 m.

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The characteristics of the image that are created by the flat surface are the same size as the object. The obtained image is virtual. The correct answer is the same size as the object.

Pictures shaped via plane mirrors are virtual, upstanding, left-right switched, a similar separation from the mirror as the item's distance, and a similar size as the item.

A copy of an object created by light rays intersecting is called an image. The properties of an image that are obtained through a light phenomenon like reflection or refraction can be described using an image's characteristics.

The virtual image in flat, or plane, mirrors is the same distance behind the mirror as the object in front of it. Additionally, the image and the object are the same sizes. Additionally, these images are parity inverted, exhibiting an inversion from left to right.

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Answer:

Ally has a harder time

ally takes more time

juan is quick

juan is more experienced

if none of those are awnser choices what are the awnser choices?

Explanation:

Capacitance is a property of a capacitor and represents its ability to store electrical charge. It is denoted by the symbol C and is measured in farads (F).

The capacitance of a capacitor is determined by its physical characteristics, such as the size, shape, and materials used. It can be calculated using the equation:

C = Q / V

C =  capacitance in farads,

Q = charge stored in the capacitor in coulombs,

V = voltage across the capacitor in volts.

In practical terms, capacitance describes the amount of charge that a capacitor can store per unit voltage. A capacitor with a higher capacitance can store more charge for a given voltage, while a capacitor with a lower capacitance can store less charge.

The farad (F) is a relatively large unit of capacitance, and in many cases, capacitors are commonly measured in smaller units such as microfarads (μF), nanofarads (nF), or picofarads (pF), which are equivalent to 10⁻⁶ F, 10⁻⁹ F, and 10⁻¹² F, respectively.

Thus, a capacitor's capacitance reflects its capacity to hold an electrical charge. It is measured in farads (F) and has the sign C.

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Complete question:

What is the capacitance?

Express your answer in farads.

The speed of the water flow through the hole in the figure is 2.97 m/s.

The speed of the water flow through the hole in the figure is calculated by applying the principle of conservation of energy as shown below.

change in kinetic energy = change in potential

ΔK.E = ΔP.E

where;

¹/₂mv² - ¹/₂mu² = mgh₁ - mgh₂

where;

¹/₂m(v² -u²) = mg(h₁ -h₂)

¹/₂(v² -u²) = g(h₁ -h₂)

¹/₂(v² -0) = g(h₁ -h₂)

v² = 2g(h₁ -h₂)

v = √(2g(h₁ -h₂))

v = √(2 x 9.8(0.5 - 0.05))

v = 2.97 m/s

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The wavelength associated with the particle of mass 1 mg and velocity

1 km/s is 6.63 x \(10^{-31}\) m.

We have a particle moving with certain velocity.

We have to calculate the wavelength associated with the particle.

According to de - Broglie, the wavelength of the wave associated with the moving particle is -

λ = h/mv

Where -

h -  Planck's constant

mv - Momentum of particle

According to the question -

Mass = 1 mg =  10⁻⁶ Kg

velocity = 1 Km/s = 1000 m/s

Using the formula for de - Broglie wavelength discussed above -

Momentum = mv = 10⁻⁶ x 10³ = 10⁻³ Kg m/s

now -

λ = h/10⁻³ = 6.63 x 10⁻³⁴/10⁻³ = 6.63 x 10⁻³¹ m

Hence, the wavelength associated with the particle is 6.63 x 10⁻³¹  m.

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Answer:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever

Explanation: