How many coulombs of charge are needed to produce 44.3 mol of solid zinc?

In this case, the electric field is 340 N/C, and the area vector is normal to the surface, so the dot product of the two is 0.

Electric flux is a measure of the amount of electric field that passes through a given area. It is measured in units of coulombs per meter squared (C/m2). Electric flux is important in electric circuits and fields, as it allows for the calculation of electric field strength, current, and other electrical properties. Electric flux is related to the concept of electric field lines, which represent the direction of the electric field at any point.

The electric flux through the surface shown in the figure is 0 N ⋅ m2/C. This is because the electric field is perpendicular to the surface and so no electric flux is passing through it. The electric flux is calculated as the dot product of the electric field and the area vector, and since the two are perpendicular, the result is 0.

Mathematically, electric flux is given by the formula Φ = E · A, where E is the electric field and A is the area vector.

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Part A. We are given that rock is thrown straight upwards from a bridge with an initial velocity of +35 m/s. To determine the velocity after 2 seconds we will use the following equation of motion for the velocity of a body in free fall:

Where:

Now, we plug in the values:

Now, we solve the operations:

Therefore, the velocity after 2 seconds is 15.4 m/s.

Part B. To determine the displacement we will use the following formula:

Now, we substitute the values:

Solving the operations:

Therefore, the displacement is 50.4 meters.

The runner's centripetal acceleration is 20.5 m/s2 as they run the curved portion of the track. So they complete the 200 m dash in 25.7 s and run at constant speed throughout the race

The centripetal acceleration of a runner taking part in the 200 m dash running around the end of a track that has a circular arc with a radius of curvature of 30 m while running at a constant speed throughout the race is 3.7 m/s^2. In a circular motion, centripetal acceleration is the acceleration that points to the center of the circle. The velocity of an object moving around a circle at a constant speed is perpendicular to the centripetal acceleration. The tangential velocity and the magnitude of the centripetal acceleration determine the curvature radius. The centripetal acceleration formula is as follows:
The centripetal acceleration experienced by the runner can be calculated using the following equation:
ac = (v2) / r

Where ac is the centripetal acceleration, v is the runner's speed, and r is the radius of the arc of the track.

In this case, we know that the runner completes the 200m dash in 25.7 seconds, so their speed can be calculated as:

v = 200m / 25.7s = 7.76 m/s

We also know that the radius of curvature of the track is 30m, so plugging these values into the equation gives us:
ac = (7.76m/s)2 / 30m = 20.5 m/s2

Therefore, the runner's centripetal acceleration is 20.5 m/s2 as they run the curved portion of the track.

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Answer:

the answer is 352.8m

Explanation:

Since the gravitational constant is denoted as g

\(g = 9.8 \: \frac{m}{ {s}^{2} }\)

and the ball needed 6 seconds to land, so we can calculate the height of the building as:

\(h = 9.8 \: \frac{m}{ {s}^{2} } \times {(6s)}^{2} = 9.8 \: \frac{m}{ {s}^{2} } \times 36 {s}^{2} = 352.8m\)

The states of matter can be ranked from least to most dense as follows: gases, liquids, and solids.

The states of matter can be ranked from least to most dense as follows:

It is important to note that there can be exceptions to this general ranking. For example, ice (solid water) is less dense than liquid water, which is why ice floats on water. The density of a substance can also be affected by temperature and pressure.

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The rate of states of matter from least to most dense are Gases, Liquids, Solids. Each state of matter is unique and has a different level of density. Keep reading to understand why.Gases Gas is the least dense of all states of matter. Particles in gases are very far apart and they don't have a definite shape or volume.

They spread out to fill the space they are in. There is a lot of space between gas particles, which makes them compressible. This means that they can be squashed down into smaller spaces and when they expand, they spread out and take up more space. Examples of gases include helium, oxygen, and carbon dioxide.LiquidsLiquids are more dense than gases. The particles in liquids are closer together than gas particles but are not as compact as the particles in solids. Liquids have a definite volume, but they don't have a definite shape, they take on the shape of the container they are in. The particles in liquids can slide past one another.

Examples of liquids include water, oil, and blood.SolidsSolids are the most dense state of matter. The particles in solids are very closely packed together. They are arranged in a regular pattern and can only vibrate in place. Solids have a definite shape and volume. They can't be squashed into smaller spaces. Examples of solids include ice, wood, and rock.

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The major method scientists use to share their research findings with other scientists is (b) peer-reviewed journals.

The primary means through which scientists disseminate the results of their study to other scientists is through peer-reviewed publications. Research articles are submitted by scientists in this method to respectable scientific publications.

The papers are next subjected to a thorough examination by a group of subject-matter specialists known as peers or referees. Prior to being approved for publication, these experts evaluate the research's quality, validity, and importance.

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Answer:

-to defend territory

-to support allies

-to protect economic interests

Explanation:

100% on edge

A nation most likely uses military force-

To defend the nation and its population from immediate danger, military superiority contributes to the maintenance of peace and stability in areas crucial to national interests and finances international security commitments.

The current method used by countries to obtain emergency recruits during times of conflict is drafting. This act, known as conscription in medieval and ancient periods, frequently involved taking young boys against their will from their homes.

Most of the time, leadership is crucial. The Army upholds national laws, accomplishes national goals, and prevents any nation's aggressive actions in order to maintain peace.

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When you push a pencil off your desk, the energy transformation that takes place is that potential energy transforms into kinetic energy.

The correct answer to the given question is option C.

Potential energy is the energy stored within an object because of its position or configuration.

In this scenario, the pencil has potential energy because of its elevated position on the desk. When the pencil is pushed off the desk, it begins to move, which means that it has kinetic energy. Kinetic energy is the energy of motion.

As the pencil falls off the desk, its potential energy is transformed into kinetic energy, which is the energy that results from its motion. The faster the pencil falls, the greater its kinetic energy will be because kinetic energy is directly proportional to the square of an object's velocity.

Therefore, when you push a pencil off your desk, the potential energy that it has because of its elevated position is transformed into kinetic energy as it falls towards the ground.

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The electron cloud is a model used to describe the behavior of electrons in an atom. Electrons move around the nucleus in a wave-like motion with a certain amount of energy and the outermost electrons are called valence electrons.

The electron cloud is an abstract concept used to describe the behavior of electrons in an atom. It is the region of space where the probability of finding an electron is highest. Electrons move around the nucleus in a cloud-like shape and occupy the space around the nucleus, rather than being confined to a specific orbit.

Electrons move around the nucleus in a wave-like motion with a certain amount of energy. This energy is related to the orbit of the electron, as electrons in higher energy levels are further away from the nucleus than those in lower energy levels. Electrons can move from one energy level to another by emitting or absorbing energy in the form of a photon.

These electrons determine how an atom interacts with other atoms and are responsible for chemical bonding. Valence electrons are the most easily removed from the atom and are important in determining the reactivity of an element.

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Answer:

Moderate temperatures

Explanation:

Water came before life and tides. Gravity is irrelevant.

The hammer falls 325 feet in 5 seconds.

a) Given s(t) = 2t² + 6t, we can calculate the velocity by finding the derivative of s(t) with respect to t.

Therefore,v(t) = s'(t) = 4t + 6.

b) Similarly, we can calculate the acceleration by finding the derivative of v(t) with respect to t.a(t) = v'(t) = 4.c)

We are given t = 2.

Substituting t = 2 in v(t), we getv(2) = 4(2) + 6 = 14

Substituting t = 2 in a(t), we geta(2) = 4

The velocity of the object when t = 2 is 14 units and the acceleration when t = 2 is 4 units.

a) The distance fallen by the hammer in 5 seconds can be calculated using the formula for s(t) as:

s(5) = 13(5²)

      = 325 feet.

Therefore, In 5 seconds, the hammer drops 325 feet.

b) We can find the velocity of the hammer at t = 5 seconds by finding the derivative of s(t) with respect to t.

v(t) = s'(t)

     = 26t

Therefore,v(5) = 26(5)

                              = 130 feet per second.

c) We can find the acceleration of the hammer at t = 5 seconds by finding the derivative of v(t) with respect to t.

a(t) = v'(t)

     = 26

The acceleration of the hammer at t = 5 seconds is 26 units.

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Explanation:

everything can be found in the picture

Answer:

delta x= 100m

Explanation:

vi= 25 meters

a= -27meters

t=20s

find delta x

The sound would have a wavelength of about  9.8 * 10^-3 m.

The wavelength is a characteristic of a wave that describes the distance between two successive points in the wave that are in phase, or the distance over which the wave's shape repeats. It is typically denoted by the Greek letter lambda (λ) and is measured in meters (m) or other units of length.

Given that the speed of sound in air is 343 m/s

v= λf

λ = v/f

λ =  343 m/s/3.5x10^4 Hz

λ =  9.8 * 10^-3 m

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The force responsible for the acceleration of the crate is the frictional force between the crate and the bed of the truck.

When the truck accelerates, the crate tends to remain at rest due to inertia. However, the frictional force between the crate and the bed of the truck acts in the forward direction, allowing the crate to accelerate along with the truck.

This frictional force is a result of the interaction between the surfaces of the crate and the truck bed. Without this frictional force, the crate would slide or move independently from the truck's acceleration.

The frictional force arises due to the microscopically rough surfaces of the crate and the truck bed. As the two surfaces are pressed against each other, intermolecular forces come into play, resulting in the generation of the frictional force

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Explanation:

mass of car + mass of the wrestler = (100+160) kg

= 260kg.

force = mass × acceleration

= 260×3 = 780 N.

hope this helps you.

Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.

Barometric pressure, to put it simply, is the measurement of air pressure in the atmosphere, more particularly, the measurement of the weight exerted by air molecules at a certain location on Earth.

barometer, a tool for calculating atmospheric pressure. A barometer may also be used to determine height since air pressure varies with elevation above or below sea level. Mercury and aneroid barometers are the two primary varieties.

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Answer:

so i believe your answer is abt 1800-2400

Explanation:

According to the Dietary Guidelines for Americans 2010, sedentary teen girls between the ages of 13 and 18 need 1,600 to 1,800 calories per day, while active girls require 2,200 to 2,400 calories each day

Answer: False

Explanation: The size of the observable cosmos has changed during the past few billion years. Since the Big Bang, which is thought to have happened approximately 13.8 billion years ago, the observable universe has been expanding. This indicates that the observable universe has been expanding together with the distance between galaxies. The cosmos has seen phases of acceleration and slowdown in its expansion, however the rate of expansion has not always been constant. The observable universe is therefore bigger than it was a few billion years ago.

Answer:

A.) Maritime Tropical (mT)

Explanation:

Continental tropical is the air mass that forms over warm land.

Maritime Polar is the air mass that forms over cold water.

Continental polar is the air mass that forms over cold land.

So therefore A or Maritime Tropical is the correct answer

The type of galaxy in which star formation is no longer occurring is an elliptical galaxy. Elliptical galaxies are made up of old stars and do not have much gas or dust, which are necessary for new star formation. In contrast, spiral galaxies have ongoing star formation as they have a lot of gas and dust in their arms.

However, it is important to note that there can be exceptions to this general rule and some elliptical galaxies may have some residual star formation occurring in certain regions.

In elliptical galaxies, star formation is no longer occurring. These galaxies consist mainly of older, low-mass stars and contain very little gas and dust, which are essential for new star formation. As a result, their stellar population is aging without being replaced by newly formed stars.

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Answer:

yes

Explanation:

According to Newton's second law the angular acceleration will be (a) the size of the object.

According to Newton's second law, the angular acceleration experienced by an object rotating about a fixed axis is directly proportional to the net torque applied to the object. Therefore, option (c) "net torque applied to the object" is the correct answer. The moment of inertia (option b) is a property of the object that relates to how its mass is distributed around the axis of rotation, and it affects the angular acceleration, but it is not directly proportional to it. Option (d) is partly correct in that both the moment of inertia and the net applied torque affect the angular acceleration, but they are not directly proportional to it, so it is not a fully correct answer. Option (a) "the size of the object" is not directly related to the angular acceleration experienced by an object rotating about a fixed axis.

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Answer:

Explanation:

When middle polarizer is rotated rotated at 100 revolutions per minute we can take following steps into consideration-

This effect although not normally done with mechanical rotation, is the basis for making optical modulators that are used in high-speed digital communication systems by inserting the thermometer in solution and note down the temperature.

Remove the caps of polarimeter glass tube and measure the length of tube.

Setting up of sodium source in front of slit will be placed at the principal focus of lens of polarimeter.

\(Rotation=\alpha =\frac{\beta }{y}\)

β is the mean angle of rotation and y means length of polarimeter tube in decimeter.

\(y=\frac{len. of polarimeter}{10}\)

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Answer:

yes, it will move but slowly

Explanation:

The friction force between the box and the floor don't stop it from moving.... but it slow down its speed

Answer:

9 m/s

Explanation:

speed = distance ÷ time

27÷3

=9

Answer:

26m/s²

Explanation:

Given parameters:

Mass of the student  = 60kg

Weight  = 1560N

Unknown:

Acceleration due to gravity  = ?

Solution:

Weight is a force on a body due to gravity;

  Weight  = mass x gravity

Insert the given parameters and solve;

    1560  = 60 x gravity

    Gravity  = \(\frac{1560}{60}\)   = 26m/s²

Answer:

Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)

Answer:

Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz.)

Explanation:

Ok