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The charge contained in a section of the line of length 2.50 cm is 8.87 × 10⁻¹⁰ C.

The formula for electric field intensity of a line charge is given by:E= λ/2πε₀rwhere,λ is the linear charge density of the line.ε₀ is the permittivity of free space.r is the perpendicular distance of the point from the line charge.

Electric field intensity, E = 810 N/CandDistance, r = 0.385 mUsing the above formula, we can find the value of linear charge density of the line.λ = 2πε₀Erλ = 2 × π × 8.85 × 10⁻¹² × 810 × 0.385λ = 3.55 × 10⁻⁸ C/mLength of the section of the line, L = 2.5 cm = 0.025 mWe need to find the charge present in a section of the line of length 2.50 cm.Since the linear charge density of the line is 3.55 × 10⁻⁸ C/m,Charge in a section of the line of length 0.025 m = λLq = λLq = 3.55 × 10⁻⁸ × 0.025q = 8.87 × 10⁻¹⁰ C

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i dont know for real

Answer:

A This is a nuclear reaction, because the atoms nucleus changed.

υx(t) is the x-component of the squirrel's velocity as a function of time. It represents the rate of change of the squirrel's x-position with respect to time.

To determine υx(t), the x-component of the squirrel's velocity as a function of time, you first need to know the squirrel's position function in the x-direction, which is represented as x(t). The position function could be given as a formula, or you might need to find it based on other information.

Once you have the position function x(t), you can find the x-component of the velocity by taking the derivative of x(t) with respect to time. This derivative, denoted as υx(t) or dx/dt, will give you the rate of change of the squirrel's x-position over time, indicating its velocity in the x-direction.

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The force of gravity increases when two objects move closer together. This is true statement.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

A spring balance can be used to calculate the Force. Newton is the SI unit of force.

The force of gravity between two objects is inversely proportional to the square of the distance between them. Hence, the force of gravity increases when two objects move closer together. This is true statement.

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A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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Answer:

100m/s

Explanation:

speed of wave=frequency × wave length

=10 × 10

=100m/s

Answer:

100 m/s

Explanation:

Formula :

Solving using the given values :

Answer:

The distance of the goggle from the edge of the pool is 4.726 m

Explanation:

The given information are;

The depth of the swimming pool = 3.0 m deep

The height of the laser pointer above the swimming pool edge = 1.0 m

The distance from the pool edge the laser  pointer enters the water  = 2.0 m

The angle between the pool and the laser = ∅ = tan⁻¹(1/2) = 26.57°

Therefore, the angle of incidence to the vertical \(\theta_i\),  = θ - ∅ = 90 - 26.57° = 63.43°

By Snell's law we have;

The ratio of the sin of the angle of incidence to the sin of the angle of refraction is a a constant equal to the ratio of the refractive indices as follows;

\(\dfrac{sin (\theta_i)}{sin (\theta_r} =\dfrac{n_r}{n_i}\)

Where:

\(n_r\) = Refractive index of the refractive medium which is water = 1.33

\(n_i\) = Refractive index of the incidence medium which is air = 1.00

Therefore;

\(\theta_r = sin^{-1} \left (\dfrac{n_i \times sin (\theta_i)}{n_r} \right) = sin^{-1} \left (\dfrac{1\times sin (63.43)}{1.33} \right) = 42.26 ^{\circ}\)

We have that tan(\(\theta_r\)) = (Distance of the goggles from the point directly above the point of incidence of the beam)/(The water depth)

tan(42.26) = (The horizontal distance of the goggles from the point of incidence of the laser on the water surface)/(3.0)

∴ The horizontal distance of the goggles from the point of incidence of the laser on the water surface = 3.0 × tan(42.26) = 2.726 m

The distance of the goggle from the edge of the pool = The horizontal distance of the goggles from the point of incidence of the laser on the water surface + The distance from the edge of the water surface the laser enters the water

The distance of the goggle from the edge of the pool = 2.726 + 2 = 4.726 m

The distance of the goggle from the edge of the pool = 4.726 m.

Answer: (c) inertia

Explanation: Mass is directly proportional to inertia. Mass is not related to velocity, and the gravitational acceleration of all objects a given distance from the same massive body is the same. This is tricky, as the force of gravity (weight) is larger on heavier objects, but one must remember that weight is calculated by multiplying an object's mass by g. Option b is only considering g.

As oil is pumped through a hydraulic system, it progressively builds pressure and flows through the system, providing power to hydraulic components such as cylinders, motors, and valves.

The oil's flow rate, viscosity, and temperature can all impact the system's performance and efficiency. It's crucial to maintain the oil's cleanliness and monitor its level to ensure the hydraulic system's proper function.

As oil is pumped through a hydraulic system, it progressively flows from the hydraulic pump, which generates the required pressure, to various components such as valves, actuators, and cylinders.

These components help control and transmit the energy created by the pressurized oil, allowing the hydraulic system to perform work efficiently. Here's a step-by-step explanation of the process:

1. The hydraulic pump draws oil from the reservoir, increasing its pressure and generating the necessary power.

2. The pressurized oil flows through the hydraulic lines, which are designed to withstand the high pressure.

3. The oil reaches control valves, which regulate the flow and direction of the oil within the system.

4. The oil then moves to the actuators (such as hydraulic cylinders or hydraulic motors), where the pressurized oil's energy is converted into mechanical force, allowing the system to perform work.

5. Once the work is done, the oil's pressure decreases, and it returns to the reservoir, where it may be filtered and re-circulated through the hydraulic system.

As oil progresses through a hydraulic system, it's essential to maintain its proper viscosity, cleanliness, and temperature to ensure efficient performance and prevent component wear or damage.

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Answer:

56000kgm/s

Explanation:

Momentum = Mass * Velocity (both in standard unit)

Therefore, the car's momentum = 1400 * 40 = 56000kgm/s (or 56000Ns)

Answer:

\(a=-1.875\ m/s^2\)

Explanation:

Motion With Constant Acceleration

It occurs when the velocity of an object changes uniformly in time.

The equation that rules the change of velocities is:

\(v_f=v_o+at\)

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

Solving for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

The initial speed is vo=72 Km/h and it's reduced to vf=45 km/h in a time of t=4 s. Both speeds will be converted to m/s:

vo=72*1000/3600 = 20 m/s

vf=45*1000/3600 = 12.5 m/s

Now calculate the acceleration:

\(\displaystyle a=\frac{12.5-20}{4}=\frac{-7.5}{4}\)

\(\mathbf{a=-1.875\ m/s^2}\)

Answer:

When the circuit breaker trips and turns off, it can shut off power to the appliance. This not only protects your home from damage, but it also protects the appliance itself.

Explanation:

What is a circuit breaker. A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overcurrent/overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault.

To calculate the potential energy of the system consisting of three particles, each with a mass of 7.00 g, located at the corners of an equilateral triangle with sides of 30.0 cm, we can use the formula for gravitational potential energy.

Explanation:

The potential energy  The formula for gravitational potential energy is given by \(PE = -G * (m1 * m2) / r\), where G is the gravitational constant (approximately  \((6.674 × 10^(-11) N*m^2/kg^2),\) ) m1 and m2 are the masses of the particles, and r is the distance between them.

Since all three particles have the same mass of 7.00 g (or 0.007 kg) and are located at the corners of an equilateral triangle, the distance between them is equal to the side length of the triangle, which is 30.0 cm (or 0.30 m).

Calculating the potential energy for each pair of particles and summing them up, we get:

\(PE = -G * (m1 * m2) / r = -6.674 × 10^(-11) * (0.007 * 0.007) / 0.30 = -3.933 × 10^(-12) J.\)

Therefore, the potential energy of the system is approximately \(-3.933 × 10^(-12) Joules.\)

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The amοunt οf kinetic energy that is translatiοnal is apprοximately 172.8 J, and the amοunt that is rοtatiοnal is apprοximately 8.733 J.

Tο determine the amοunt οf kinetic energy that is translatiοnal and rοtatiοnal, we need tο calculate the respective cοntributiοns.

The translatiοnal kinetic energy (\(\rm K_{trans\)) οf a rοlling sphere is given by the equatiοn:

\(\rm K_{trans\) = (1/2) * m * v²

where m is the mass οf the ball and v is the linear speed.

Given:

Mass οf the baseball (m) = 0.15 kg

Linear speed (v) = 48 m/s

Substituting the values intο the equatiοn, we can calculate the translatiοnal kinetic energy:

\(\rm K_{trans\)  = (1/2) * 0.15 kg * (48 m/s)²

= 0.15 kg * 1152 m²/s²

= 172.8 J

The rοtatiοnal kinetic energy (\(\rm K_{rot\)) οf a rοlling sphere is given by the equatiοn:

\(\rm K_{rot\) = (1/2) * I * ω²

where I is the mοment οf inertia οf the sphere and ω is the angular speed.

Fοr a sοlid sphere, the mοment οf inertia is given by:

I = (2/5) * m * r²

where r is the radius οf the ball.

Given:

Radius (r) = 3.7 cm = 0.037 m

Angular speed (ω) = 42 rad/s

Substituting the values intο the equatiοn, we can calculate the rοtatiοnal kinetic energy:

I = (2/5) * 0.15 kg * (0.037 m)²

= 0.00277 kg * m²

K_rοt = (1/2) * 0.00277 kg * m² * (42 rad/s)²

= 0.00277 kg * m² * 1764 rad²/s²

= 8.733 J

Therefοre, the amοunt οf kinetic energy that is translatiοnal is apprοximately 172.8 J, and the amοunt that is rοtatiοnal is apprοximately 8.733 J.

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(105 N/m) x (0.1 m)  =  10.5 Newtons.

Answer:

(105 N/m) x (0.1 m) = 10.5 Newtons.

Explanation:

apex quiz

Answer:

30.3 meters, 172 degrees

Explanation:

To insure the most accurate solution, this problem is best solved using a calculator and trigonometric principles. The first step is to determine the sum of all the horizontal (east-west) displacements and the sum of all the vertical (north-south) displacements.

Horizontal: 2.0 meters, West + 31.0 meters, West + 3.0 meters, East = 30.0 meters, West

Vertical: 12.0 meters, North + 8.0 meters, South = 4.0 meters, North

The series of five displacements is equivalent to two displacements of 30 meters, West and 4 meters, North. The resultant of these two displacements can be found using the Pythagorean theorem (for the magnitude) and the tangent function (for the direction). A non-scaled sketch is useful for visualizing the situation.

Applying the Pythagorean theorem leads to the magnitude of the resultant (R).

R2 = (30.0 m)2 + (4.0 m)2 = 916 m2

R = Sqrt(916 m2)

R = 30.3 meters

The angle theta in the diagram above can be found using the tangent function.

tangent(theta) = opposite/adjacent = (4.0 m) / (30.0 m)

tangent(theta) = 0.1333

theta = invtan(0.1333)

theta = 7.59 degrees

This angle theta is the angle between west and the resultant. Directions of vectors are expressed as the counterclockwise angle of rotation relative to east. So the direction is 7.59 degrees short of 180 degrees. That is, the direction is ~172 degrees.

Answer:

For number 4: A vector pointing to the right with a magnitude of 2.0

Explanation:

Very simple- just subtract 6-2

I am not sure how to do #2- sorry!

The kinetic energy associated with this impact is 5.53 x \(10^{24}\) J or 1.32 x \(10^{10}\) megatons of TNT (as 1 megaton of TNT yields 4.2 x \(10^{15}\) J). Hence, the kinetic energy of the impact was 1.32 x \(10^{10}\) megatons of TNT.

An explosion at ground level leaves a crater with a diameter that is proportional to the energy of the explosion raised to the power is related to the energy released by the explosion as well as the mass, velocity and the angle of impact.

This question concerns a crater that appeared below Lake Huron in Michigan, and the goal is to find out the kinetic energy that was associated with the impact in terms of megatons of TNT.

Therefore, the relationship between the diameter of the crater and the energy of the explosion is proportional, which implies that an increase in the energy of the explosion will lead to an increase in the diameter of the crater.

Hence, for an explosion of 1 megaton of TNT, the diameter of the crater is 1 km.
Thus, the energy associated with this impact crater is:
E = \((50 \:km / 1\: km)^3\) x (1 MT) x (4.2 x \(10^{15}\) J / 1 MT)
E = \((50)^3\) x (4.2 x \(10^{15}\))
E = 5.53 x \(10^{124}\) J

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Answer:

a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars

Explanation:

Answer:

yes

Explanation:

this is true don't believe other people whether right or wrong

Answer:

Time = 80.91 seconds

Explanation:

Given the following data;

Velocity = 5.50 m/s.

Distance = 445 meters

To find the time;

Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.

Mathematically, velocity is given by the equation;

\(Velocity = \frac{distance}{time}\)

Substituting into the formula, we have;

5.5 = 445/time

Time = 445/5.5

Time = 80.91 seconds

In this experiment, room temperature would be the independent variable.

The independent variable is the factor that is being manipulated or changed by the researcher in an experiment.

In this case, the researcher, Dr. Gonzalez, is interested in measuring how changes in room temperature affect a student's ability to focus in class.

To conduct the experiment, Dr. Gonzalez would need to manipulate the room temperature, for example by adjusting the thermostat, while keeping all other variables constant.

The dependent variable, on the other hand, is the variable that is being measured or observed and is expected to change as a result of the independent variable.

In this case, the dependent variable would be the students' ability to focus in class.

Dr. Gonzalez could measure this by using a standardized test or by observing the students during class and noting any changes in their behavior or performance.

As with any scientific experiment, it's important to control for any extraneous variables that could affect the results.

In this case, Dr. Gonzalez would need to ensure that all other factors that could affect a student's ability to focus (such as noise level, lighting, or time of day) are kept constant throughout the experiment.

By manipulating the independent variable (room temperature) while keeping all other variables constant, Dr. Gonzalez would be able to determine whether changes in room temperature have a significant impact on students' ability to focus in class.

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Sound waves between layers of mass are dampened or diminished using MLV (Mass Loaded Vinyl).

By converting sound waves into heat through the use of a viscoelastic damping compound or MLV, the waves are weakened before they reach the next layer of mass.

Sound can only be stopped by mass. A mass can be made of plywood, drywall, or concrete.

The typical model for wave damping includes a velocity dependent term.

The damping increases when you try to distort the medium more quickly. The amount of damping is significantly influenced by the fluid's viscosity, through which the sound wave is propagating.

Only the bass portion of music is audible when heard from a distance because higher frequency sound dampens in air more quickly.

The wave's amplitude decreases with increasing displacement due to the decrease in energy per unit volume. However, when the wave's energy is dispersed over a huge region, causing it to decay rapidly, a different sort of damping (decrease in energy per unit volume) can be seen.

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The effect of weather and climate on the picture is erosion. The 3 potential solutions to the erosion are Planting of a cover crop, Build Terraces, and Create diversions to Help Drainage.

Erosion is defined as the washing away of the topmost portion of the soil which can occur due to natural causes or through the activities of man.

The natural causes of erosion is related to changes in weather and climate through rain, rivers, floods, lakes, and the ocean.

The three potential solutions to the problem of erosion include the following:

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If the same force is applied and the radius is halved , then the speed of the eraser is decreased by a factor of √2 .

A Centripetal force (f) is applied on a moving eraser with speed (v)  and radius (r) .

if the force is same , and the radius is halved then ,

let initial centripetal force = F , mass = m and radius = r , initial speed = v .

we know F = mr²/r    ........equation(1) .

the new radius (r') = r/2 ;

new velocity (v') =

then F = 2mv'²/r   ...equation(2) ;

comparing equation(1) with equation(2) ,

we get ,

mv²/r = 2mv'²/r ;

v' = v/√2 .

Therefore , the speed is decreased by a factor  of √2 .

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Answer:

The answer is (A) "Polymers are substances that have relatively large molecules."

Polymer, any of a class of common or synthetic substances made out of very large molecules, called macromolecules, that are products of less complex synthetic units called monomers. Polymers make up a considerable lot of the materials in living beings, including, for instance, proteins, cellulose, and nucleic acids. In addition, they constitute the premise of such minerals as diamond, quartz, and feldspar and such man-influenced materials as solid, glass, to paper, plastics, and rubbers.

Answer:

I hope this helps

Explanation:

Answer:

5.45 x 10^3

Explanation:

Answer:

the top guy was right

Explanation:

Its right

Answer:

Its D

Merry Christmas!!!!

Explanation:

Also I got this question right I had it for an assignment