Write two characteristics of an educated society ​

Answer:

If a rubber balloon is charged negatively (perhaps by rubbing it with animal fur) and brought near the spheres, electrons within the two-sphere system will be induced to move away from the balloon. This is simply the principle that like charges repel.

Explanation:

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Answer:

the angle of the vector, using the inverse tangent function, is approximately 14.04 degrees.

Explanation:

To find the angle of a vector with given x and y components, we can use the inverse tangent (arctan) function. The formula is as follows:

Angle = arctan(y-component / x-component)

Given:

x-component = 8

y-component = 2

Using these values, we can calculate the angle as:

Angle = arctan(2 / 8)

Calculating this expression, we find:

Angle ≈ arctan(0.25) ≈ 14.04 degrees

Answer:

pitch

Explanation:

The efficiency of the heating system is 80%.

Efficiency is the regularly measurable capacity to keep away from losing substances, energy, effort, cash, and time in doing something or in producing the desired end result. In a greater popular experience, it is the capability to do things nicely, efficaciously, and without waste.

Heat pumps are the most efficient way to heat pretty much any enclosed area, they are quiet and comfy, they decrease your heating invoice considerably, and they double as an air-conditioning gadget in the summer. Fuel heating systems can be fueled with the aid of both herbal fuel and propane with easy adjustments accounting for the one-of-a-kind traits of every. We seek advice from each fuel as genuinely "gasoline." The maximum commonplace styles of structures encompass compelled air, warm water, steam, and localized space heating.

efficiency = output/input × 100

                = 320 / 400 × 100

                 = 80 %

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Answer:

C.endothermic

Explanation:

chemical reactions

Answer:

C

Explanation:

The energy produce by electricity is known as electric energy.

Answer:

Electrical energy is energy derived from electrical potential energy or kinetic energy

Explanation:

when used loosely ,electrical energy refers to energy that has been converted from potential energy.

The statement is false. You need to add the atmospheric pressure, which is approximately 101.3 kPa, not 1.01 Pa, to convert pressure from gauge to absolute.

To convert pressure from gauge to absolute, you need to add the atmospheric pressure to the gauge pressure. The atmospheric pressure varies with altitude and weather conditions but is typically around 101.3 kPa or 14.7 psi at sea level.

Therefore, to convert a gauge pressure to an absolute pressure, you would add the atmospheric pressure to the gauge pressure. For example, if you have a gauge pressure of 100 kPa, the corresponding absolute pressure would be:

Absolute pressure = Gauge pressure + Atmospheric pressure

Absolute pressure = 100 kPa + 101.3 kPa

Absolute pressure = 201.3 kPa

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Answer: A thesis statement states the main idea of an essay or assignment.

Explanation: A thesis statement is put in the introduction of a writing assignment to tell the reader the opinion or judgement of the writer. What the writer infers about a book or personal experience. Examples are argumentative essays or literary device essays.

ANSWER:

(a) 0.100 m^3

STEP-BY-STEP EXPLANATION:

We have that the force is equal to mass times gravity, therefore, we can calculate the mass, because the difference in force would be the volume of the stone.

Therefore

Now, we know that the density is equal to the quotient between the mass and the volume, therefore we can calculate the volume like this:

Therefore the volume of the piece is 0.100 cubic meters.

Answer:

76.74 Hz

Explanation:

Given:

Wave velocity ( v ) = 330 m / sec

wavelength ( λ ) = 4.3 m

We have to calculate Frequency ( f ):

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > f = v / λ

Putting values here we get:

= > f = 330 / 4.3 Hz

= > f = 3300 / 43 Hz

= > f = 76.74 Hz

Hence, frequency of sound is 76.74 Hz.

ANSWER:

(a) 108 J

(b) 0 J

(c) 108 J

STEP-BY-STEP EXPLANATION:

(a)

Express the relation between horizontal component of work done and force on the crate:

Here Wh is the horizontal component of the work done on the crate and Fh is the horizontal component of force and d is the distance of the crate across the floor.

Replacing:

(b)

Express the relation between vertical component of work done and force on the crate:

Here Wv is the vertical component of the work done on the crate and Fv is the vertical component of force and d is the distance of the crate across the floor.

Replacing:

(c)

Express the relation for total work done by the 45 N force:

The position vector is:$$\boxed{\vec r=\frac{8}{3}t^3 \hat i+ \frac{5}{2}t^2 \hat j+C_1}$$

Given: The expression for velocity is:$$\vec v=8t^2 \hat i+5t \hat j$$ where $v$ is in meters per second and $t$ is in seconds. (a) To find the position vector $\vec r$ of the particle, we have to integrate the velocity function with respect to time. We get:$$\vec r=\int \vec v \ dt=\int (8t^2 \hat i+5t \hat j) \ dt=\frac{8}{3}t^3 \hat i+ \frac{5}{2}t^2 \hat j+C_1 \ \ \ \ \ \ \ \ \ \ \ \ \ [C_1=\text{Integration constant}]$$

(b) The motion of the particle is a two-dimensional motion in the $x$-$y$ plane. The velocity is given by $\vec v=8t^2 \hat i+5t \hat j$. This means that the $x$-component of the velocity increases with time while the $y$-component of the velocity increases linearly with time. This indicates that the path of the particle is a parabolic curve. Also, the particle is moving in the direction of the vector $\vec v$, which is at an angle of $\theta$ with the $x$-axis where $\tan \theta = \frac{5t}{8t^2}=\frac{5}{8t}$. This means that the angle of the velocity vector decreases with time. Hence, the motion of the particle is a curved path where the velocity vector changes its direction.

(c) To find the acceleration vector, we differentiate the velocity function with respect to time.$$a=\frac{d \vec v}{dt}=16t \hat i+5 \hat j$$Therefore, the acceleration vector is:$$\boxed{\vec a=16t \hat i+5 \hat j}$$

(d) To find the net force, we need to use Newton's second law:$$\vec F=m \vec a where $m$ is the mass of the particle. The mass of the particle is not given in the problem, so we can't find the net force.

(e) The net torque about the origin is given by:$$\vec \tau=\vec r \times \vec F$$ where $\vec r$ is the position vector and $\vec F$ is the force vector. The force vector is not given in the problem, so we can't find the net torque.

(f) The angular momentum of the particle is given by :$$\vec L=\vec r \times \vec p$$ where $\vec r$ is the position vector and $\vec p$ is the momentum vector. The momentum vector is given by :$$\vec p=m \vec v$$ where $m$ is the mass of the particle. The mass of the particle is not given in the problem, so we can't find the angular momentum.(g) The kinetic energy of the particle is given by:$$K=\frac {1}{2} m v^2$$ where $m$ is the mass of the particle. The mass of the particle is not given in the problem, so we can't find the kinetic energy.

(h) The power injected into the particle is given by :$$P=\frac {dK}{dt}$$where $K$ is the kinetic energy. The kinetic energy of the particle is not given in the problem, so we can't find the power injected.

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After catching the ball, the boy and skateboard will be moving with a speed of approximately 0.44 m/s.

According to the principle of conservation of momentum, the total momentum before and after an interaction remains constant if no external forces act on the system. In this case, the initial momentum of the ball is equal to the final momentum of the boy and skateboard system.

The initial momentum of the ball can be calculated as the product of its mass (2.0 kg) and velocity (12 m/s), which is 24 kg·m/s.

Since the boy and skateboard are initially at rest, their combined initial momentum is zero.

After catching the ball, the total momentum of the system is still 24 kg·m/s. This momentum is shared between the boy, skateboard, and the ball.

To find the final velocity of the boy and skateboard, we can divide the total momentum by their combined mass: 24 kg·m/s / 55 kg = 0.4364 m/s = 0.44 m/s.

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Answer:

C. The water molecules must gain kinetic energy

Explanation:

Whut school do u go to- my school uses the whole (-- points) thing too

The angle between the resultant and the larger force is 60 degree  if resultant force value is value 9.1Newtons.

We know that resultant force is given by the superposition principle which uses a formula

Resultant force =√((F₁)² + (F₂)² + 2 ˣ F₁ ˣ F₂ ˣ cosθ)

Superposition principle of electric force to find the resultant power, all accuses are thought about independently of that specific charge as though any remaining charges are missing. Along these lines, for each charge, the power on that specific charge is to be found out. Then the vector amount of the multitude of forces gives the resultant forces on that charge.

We have resultant force as 9.1Newton,F₁=6.2newton,F₂=4.4 newton

So,on putting the values,we get

=>(9.1) = √[(6.2)² + (4.4)² + 2 × 6.2×4.4×cosθ]

Squaring on both sides,we get

=>9.1 × 9.1 =(6.2)² + (4.4)² + 2× 6.2×4.4×cosθ

=>82.81=38.44 + 19.36 + 54.56×cosθ

=>82.81=57.8+ 54.56×cosθ

=>82.81-57.8= 54.56×cosθ

=>25.01=54.56×cosθ

=>cosθ=25.01/54.56

=>cosθ = 0.458

=>cosθ=cos(62.5)°

=>θ=62.5°

=>θ=60°(nearest 10th)

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The mechanical wave is one that moves through the medium, which is made up of matter.

Although waves can move energy between locations, they do not always move mass. Common ones of waves are light, sound, and ocean waves. Since sound & water waves are waves that move, they must move via a medium.

Mechanical waves can move in either longitudinal waves or transverse waves, which are the two most common wave motions. The two forms of waves are shown in the videos below, which also show how the movement of the wave differs from the movements of the particle in the medium it travels through.

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To convert g/cm³ to kg/m³, multiply the value in g/cm³ by 1000. For example, 2.5 g/cm³ is equivalent to 2500 kg/m³.

To convert grams per cubic centimeter (g/cm³) to kilograms per cubic meter (kg/m³), you can use the following conversion factor:

1 g/cm³ = 1000 kg/m³

To convert from g/cm³ to kg/m³, simply multiply the value in g/cm³ by 1000.

For example, let's say you have a density of 2.5 g/cm³. To convert it to kg/m³, you would do the following calculation:

2.5 g/cm³ * 1000 = 2500 kg/m³

So, 2.5 g/cm³ is equivalent to 2500 kg/m³.

Certainly! Density is a measure of how much mass is contained in a given volume. It is typically expressed in units such as grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

The conversion from g/cm³ to kg/m³ involves scaling the density by a factor of 1000. This is because there are 1000 grams in a kilogram and 1 cubic meter is equivalent to 1,000,000 cubic centimeters.

When you convert from g/cm³ to kg/m³, you are essentially converting from a smaller unit (gram) to a larger unit (kilogram) and from a smaller volume (cubic centimeter) to a larger volume (cubic meter). This means that the resulting value in kg/m³ will be larger than the original value in g/cm³.

For example, if you have a material with a density of 0.75 g/cm³, to convert it to kg/m³, you would multiply by 1000:

0.75 g/cm³ * 1000 = 750 kg/m³

So, the density of the material is 750 kg/m³.

It's important to remember that when converting units, you need to consider the relationship between the units and the appropriate conversion factors. In this case, the conversion factor is based on the relationship between grams and kilograms (1000 grams = 1 kilogram) and the relationship between cubic centimeters and cubic meters (1,000,000 cubic centimeters = 1 cubic meter).

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If the width of the slit is reduced, the width of the central bright fringe will increase. If the distance between the slit and the screen is reduced, the fringe-width will increase.

The width of the central bright fringe in a single-slit diffraction pattern is inversely proportional to the width of the slit. So, if the width of the slit is reduced, the width of the central bright fringe will increase.

The fringe-width is also inversely proportional to the distance between the slit and the screen. So, if the distance between the slit and the screen is reduced, the fringe-width will increase.

To see this, consider the equation for the width of the central bright fringe in a single-slit diffraction pattern:

w = λd / a

where:

w = width of the central bright fringe

λ = wavelength of the light

d = distance between the slit and the screen

a = width of the slit

The width of the central bright fringe is inversely proportional to the width of the slit, a. So, if the width of the slit is reduced, the width of the central bright fringe will increase.

The fringe-width is also inversely proportional to the distance between the slit and the screen, d. So, if the distance between the slit and the screen is reduced, the fringe-width will increase.

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The total amount of water vapor in the atmosphere remains approximately the same over time.

The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation). Liquid water flows across land (runoff), into the ground (infiltration and percolation), and through the ground (groundwater). Groundwater moves into plants (plant uptake) and evaporates from plants into the atmosphere (transpiration). Solid ice and snow can turn directly into gas (sublimation). The opposite can also take place when water vapor becomes solid (deposition).

In conclusion, water continually evaporates, condenses, and precipitates, and on a global basis, evaporation approximately equals precipitation. Because of this equality, the total amount of water vapor in the atmosphere remains approximately the same over time.

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The maximum instantaneous power consumption of the 120 V AC microwave oven that draws 8.5 A is 1.02 kW

The maximum instantaneous power consumption of the microwave can be calculated using the formula

P = VI, where P is power in watts, V is voltage in volts, and I is current in amperes.

Therefore, the maximum instantaneous power consumption of the microwave can be calculated as follows:
P = 120 V x 8.5 A = 1020 watts
To convert wats to kilowatts, we divide by 1000, so the maximum instantaneous power consumption of the microwave in kilowatts is:
P = 1020 watts / 1000 = 1.02 kW

Hence, the maximum instantaneous power consumption of the 120 V AC microwave oven that draws 8.5 A is 1.02 kW, which can be calculated using the theory of power being equal to voltage multiplied by current.

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True. The proximal tubule and loop of Henle are both involved in the reabsorption of sodium and water, and this process is regulated by hormones such as aldosterone and antidiuretic hormone (ADH).

The proximal tubule and loop of Henle are subject to hormonal regulation of sodium and water. Hormones such as aldosterone, antidiuretic hormone (ADH), and atrial natriuretic peptide (ANP) play a significant role in regulating sodium and water reabsorption in these nephron segments to maintain proper fluid balance in the body.

It can be a little easier to understand this reaction when you think of sodium compared to a noble gas; it is similar to neon, which has ten protons and ten electrons. Noble gases are known for their stability due to their full atomic orbitals, and not needing to gain or lose electrons.

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Answer:

True

Explanation: How are you gonna kick a ball if you have no power (strength) and how you gonna kick it if you dont have enough move your leg fast (speed) towards the ball

Refraction, reflection, and total internal reflection are distinct optical phenomena. They involve the bending, bouncing, and complete reflection of light, respectively. These phenomena have practical applications and contribute to our understanding of light behavior and optical devices.

Refraction, reflection, and total internal reflection are fundamental phenomena associated with the behavior of light when it interacts with different mediums or interfaces. Let's explore each of these concepts and understand their distinctions:

1. Refraction:

Refraction refers to the bending of light as it passes from one medium to another with a different optical density. When light encounters a change in medium, its speed and direction change, causing the light ray to deviate. This deviation occurs because light travels at different speeds in different materials. The amount of bending depends on the angle of incidence and the refractive indices of the two mediums involved. Snell's law governs the mathematical relationship between the angles of incidence and refraction. Refraction is responsible for various optical phenomena, such as the bending of light in lenses and the dispersion of white light into its constituent colors in a prism.

2. Reflection:

Reflection occurs when light encounters a boundary between two mediums and bounces back into the same medium from which it originated. The angle of incidence is equal to the angle of reflection, according to the law of reflection. Reflection plays a fundamental role in our ability to see objects, as light rays reflected from surfaces enter our eyes. Mirrors and other reflective surfaces exploit the principle of reflection.

3. Total Internal Reflection:

Total internal reflection occurs when light travels from a medium with a higher refractive index to a medium with a lower refractive index, and the angle of incidence exceeds a critical angle. In such cases, instead of bending or refracting, the light is completely reflected back into the denser medium. Total internal reflection is responsible for various phenomena, including the shiny appearance of diamonds and the working of optical fibers. It enables light to propagate through the fiber by repeated internal reflections.

In conclusion, refraction, reflection, and total internal reflection are distinct optical phenomena. Refraction involves the bending of light when it transitions between different mediums, reflection refers to the bouncing back of light from a surface, and total internal reflection occurs when light is reflected back into a denser medium at an angle greater than the critical angle. These phenomena have practical applications and contribute to our understanding of light behavior and the functioning of various optical devices.

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Answer:

divide

Explanation:

make sure u do good at it

Answer:

Earth's larger mass results in a larger acceleration due to gravity as compared to the moon. In other words, you weigh more on Earth; you would weigh less on the moon. For instance, if you take a 10 kg bowling ball to the moon, it would still have a mass of 10 kg.

Explanation:

Hope this helps ^_^

~ KisamesAbs

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

Answer:

Q = 1190 [cal]

Explanation:

In order to solve this problem, we must use the following equation of thermal energy.

\(Q=m*C_{p}*(T_{final}-T_{initial})\)

where:

Q = heat energy [cal]

Cp = specific heat = 1 [cal/g*°C]

T_final = final temperature = 120 [°C]

T_initial = initial temperature = 50 [°C]

m = mass of the substance = 17 [g]

Now replacing:

\(Q=17*1*(120-50)\\Q=1190[cal]\)

Yes, the planet is experiencing acceleration. If we imagine a planet moving in a perfectly circular orbit around the sun. is this planet experiencing acceleration?

Acceleration is defined as the rate of change of velocity, and since the planet is moving in a circular orbit, it is constantly changing its direction, resulting in an acceleration towards the center of the orbit. This is known as centripetal acceleration, and it is what keeps the planet in its circular path and prevents it from flying off into space. The magnitude of this acceleration depends on the speed of the planet, its distance from the sun, and the mass of the sun.

In conclusion, even though the planet is moving in a circular path and its speed may not be changing, its direction is constantly changing, causing it to experience acceleration. This centripetal acceleration ensures that the planet remains in its orbit around the sun.

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The resistance of a wire of length willl be 6.2 ×10⁻⁵ ohm. The length, temperature, and thickness are the factors that affect the resistance of a material.

Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire.

The value of resistance is directly propotional to length and inversly propotional to the area or thickness of the wire.

The value of the area of the wire is;

A=0.0314 mm

The relation of resistance with length and thickness is given by ;

\(\rm R= \frac{\rho L}{A} \\\\R= 3 \times 10^{-6}\frac{0.65}{0.0314} \\\\ R= 6.2 \times 10^{-5} \ ohms\)

Hence, the resistance of a wire of length willl be 6.2 ×10⁻⁵ ohm.

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