The total amount of charge that has entered a wire at time t is given by the expression Q=(20C)(1 - e^(t/(2.0s)), where t is in seconds and t\geq0.
Part A
What is the maximum value of the current?
Express your answer to two significant figures and include the appropriate units.
Part B
Graph I versus t for the interval 0 ? t ? 10s.

Answer:

3.6 Km..........................................

The given statement "properly conducting electricity so that its signal can travel unimpeded from one node on a network to another" is False.

The statement refers to the concept of transmitting data on a computer network, rather than conducting electricity.

The proper term for the process described is "network transmission," which involves ensuring that signals can travel unimpeded from one node to another on a network.

Conducting electricity refers to the movement of electric charges through a material, such as a wire, to create an electrical current. While network transmission may involve the use of electrical signals, it is distinct from the process of conducting electricity.

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The main reason that the gravitational attraction between Earth and the Moon changes each day.

Option b is correct.

Tides are the result of the gravitational tug from the Moon and Sun that the Earth feels. If we disregard the Sun for now, the Earth's oceans facing the Moon bulge up in response to the lunar gravitational force: a high tide.

Even though the sun is much more massive and therefore has stronger overall gravity than the moon, the moon is closer to the earth so that its gravitational gradient is stronger than that of the sun.

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Answer:

The longer the wave, the deeper the wave base - True

The greater the wave height, the deeper the wave base - false

The longer the wave, the faster the wave travels- true

The greater the wave height, the faster the wave travels- false

The faster the wave, the greater the wave height - False

Explanation:

When a wave has a high length it means that the wave base will be deeper.

The longer the wave, the deeper the wave base - True

When the weight height is big , the wave base will be deeper.

The greater the wave height, the deeper the wave base - false

The longer the wave, the faster the wave travels- true

The greater the wave height, the faster the wave travels- false

The faster the wave, the greater the wave height - False

The force is 220N.

Force is a physical influence that causes an object to accelerate, slow down,stop or change its direction. Forces can be external, like gravity or the push of a hand, or internal, like the tension of a rope or the thrust of a jet engine. Forces are measured in Newtons, named after the scientist who discovered them. Forces always act in pairs, so when one object exerts a force on another, the second object also exerts an equal and opposite force.

We know that,

F=ma

F=10×(-4)

=-40N

Given,

F1=100

F2=80

=F=(F1+F2)-F3

=-40=(100+80)-F3

=-40-180= -F3

=-220=F3

=F3=220N

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Hence, it is important to maintain the legal speed limit while driving on the Lake Avenue road.

The question in the image is not attached.

So, I am unable to provide you the solution to the question.

However, I can provide you the basic concepts related to the problem mentioned above.

Lake Avenue is a straight road which may contain various spots (locations) that are monitored by the police department to maintain a proper check on the speed of the vehicles passing through the road.

The drivers who exceed the legal speed limit on the spots are issued the speeding tickets.

Hence, it is important to maintain the legal speed limit while driving on the Lake Avenue road.

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If a force of 20 n begins acting on the object in the opposite direction, its velocity will rise.

If there are no forces acting to accelerate or decelerate an object that is already moving with a constant speed, it will continue to move at that speed in a straight line. By defining force as a vector quantity, Newton helped to clarify the aforementioned statement.

Newton's first law of motion states that any object moving at a constant speed experiences no net external forces, so the total amount of forces acting on the object must be zero.

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Solar energy has theoretical potential to power the world's energy needs. Practical implementation and challenges like political polarization and the influence of the fossil fuel industry must be overcome.

Solar energy has the potential to power the world's energy needs theoretically, but practical implementation and overcoming obstacles such as political polarization and the influence of the fossil fuel industry remain challenges. Economic viability and the need for sustainable energy solutions make solar energy an attractive option. Choosing hope and embracing renewable energy can pave the way for a brighter future, as exemplified by Al Gore in the film.

Solar energy indeed holds tremendous potential to meet the world's energy demands. The sun provides an abundant and renewable source of power that, theoretically, could generate enough energy to sustain the global population for an extended period. However, realizing this potential requires overcoming various barriers, including political and economic factors.

The mention of Georgetown, Texas being "right-wing" politically highlights that support for solar energy need not be limited to a particular partisan stance. The economic advantages of solar energy, such as job creation and reduced dependence on fossil fuels, can appeal to a wide range of political ideologies. Despite these benefits, the influence of the fossil fuel industry, often referred to as "Big Oil," can hinder the widespread adoption of solar energy as it may threaten their profits.

In the context of the film mentioned, Al Gore emphasizes the importance of choosing hope over despair. Recognizing the potential of solar energy and other sustainable solutions offers a positive outlook for addressing climate change and creating a more environmentally friendly future. The film concludes with Gore's optimistic outlook, symbolized by his interaction with the younger generation who will play a vital role in shaping our future.

the challenges and potential of solar energy, the political and economic factors influencing its adoption, and the importance of fostering hope and sustainability in combating climate change.

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Answer:

almost, we would need around 12 billion people to do that i believe

Explanation:

Answer:

no

Explanation:

Answer:

left

Explanation:

When a force is applied in the opposite direction of motion, it opposes the motion of the object, causing its speed to decrease.

A force is an influence in physics that can change the motion of an object. A force can cause a mass object to change its velocity, or accelerate.

Intuitively, force can be described as a push or a pull. A force is basically a vector quantity as it has both magnitude and direction.

The term "force" has a specific meaning in science. At this level, it is perfectly acceptable to refer to a force as a push or a pull.

Another object applies a force to another. The concept of a force is not restricted to living or non-living things.

To slow a moving object, apply force in the opposite direction to the direction of motion.

Thus, the force should be applied from left to slow down the object.

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The Venturi and orifice coefficients are given by the following formulas, respectively: Cv = Q / (CdA)Co = Q / (CdA), Where, Q is the flow rate, Cd is the discharge coefficient, and A is the cross-sectional area of the pipe. The value of Cd depends on the Reynolds number (Re) and the beta ratio (β), which is the ratio of the diameter of the flow-restricting device to the diameter of the pipe containing the fluid.

The values of Cd for Venturi and orifice are given below:Venturi: Cd = 0.98 - 0.04β + 0.4/βOrifice: Cd = 0.6 - 0.5/β2 + 0.85/β4For this problem, engineering judgment has to be used to estimate the values of Cd and β based on experimental data. A comparison of the calculated values of Cd and β for the Venturi and orifice can be made to check for agreement or lack of agreement.

Flow-restriction meters, such as the orifice plate and Venturi, are used to measure the flow rate of fluids in pipes. The advantages and disadvantages of these meters are given below:Advantages: Flow-restriction meters are simple and inexpensive to install. They can be used to measure the flow rate of a wide range of fluids. They are accurate for liquids and gases at high flow rates.

Disadvantages: Flow-restriction meters are sensitive to changes in viscosity, density, and temperature. They cause a pressure drop in the pipeline, which can affect the performance of pumps and compressors. They require regular maintenance to prevent clogging and fouling.

The manometer is used to measure the pressure drop across the flow-restricting device. The manometer works by balancing the pressure of the fluid with the weight of a liquid column in a tube. The air bubble in the manometer should be removed to ensure accurate measurements. If there is a 1.5 cm air length in the manometer pipe, it will cause an error in the experimental pressure due to the weight of the air. The error can be calculated as follows: Error = (ρair x g x h) / (ρfluid x g), Where ρair is the density of air, g is the acceleration due to gravity, h is the height of the air column, and ρfluid is the density of the fluid.

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Answer:

i. 170 m

ii. 850 m

Explanation:

Question

Arjun and his son Arav were standing ‘x’ m away from each other. They are equidistant (Y m) from a vertical cliff. Arjun burst a balloon and Arav heard the direct sound 0.5 seconds later and the echo after 2 seconds. If the speed of sound in air is 340m/s ,calculate

i. the distance between Arjun and Arav

ii. the distance between the cliff and Arjun

The parameters given are;

The time for the sound to reach Arav, \(t_D\) = 0.5 s

Time for the echo to echo to reach Arav, \(t_E\) = 2 s

The distance between Arjun and Arav = \(D_D\)

The distance between Arav and the cliff = \(D_E\)

The speed of sound in air, s = 340 m/s

The formula for speed, s, is \(s = \dfrac{Distance, D}{Time, t}\), therefore;

\(s = \dfrac{D_D}{t_D} = \dfrac{D_D}{0.5} = 340\)

\(D_D\) = 0.5 s × 340 m/s = 170 m

The distance between Arjun and Arav = 170 m

ii. Since Arav hears the direct sound before the echo, he is closer to the cliff than Arjun, therefore, we have;

\(s = \dfrac{D_E}{t_E} = \dfrac{D_E}{2} = 340\)

\(D_E\) = 2 s × 340 m/s = 680 m

Therefore, the distance between Arav and the cliff = 680 m

Which gives the distance between the cliff and Arjun, \(D_{cliff}\) = The distance between Arav and the cliff + The distance between Arjun and Arav

\(D_{cliff}\) = 680 + 170 = 850 m.

Answer:

0

Explanation:

The dancer starts and ends at the same place

Answer:

279 m/s

Explanation:

Answer:

2m/s^2

Explanation:

A=(u-v)/t

where u=final velocity and v=initial velocity and t=time

therefore u =70 and v=0 because the question said velocity of rest and finally t=35

so, (70-0)/35= 70/35=2

Answer:

Oxygen-Symbol-O Potassium Symbol-K

A) Valency is the combining capacity of any element. Valence electrons refers to the electrons found in the outermost shell of the atom of the element.

B) Symbol and valency:

C) The reaction would be:

\( \large{ \boxed{ \rm{2Mg + O_2 \longrightarrow \: 2MgO}}}\)

\( \large{ \boxed{ \rm{Magnesium + Oxygen \longrightarrow Magnesium oxide.

}}}\)

━━━━━━━━━━━━━━━━━━━━

When we arrange the objects in increasing strength of gravitational attraction, the following results:

To arrange the objects in increasing strength of gravitational attraction, we shall determine the gravitational force between each pair oif the objects. Details below:

For electron-dog:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 9.11×10⁻³¹ × 20) / 1²

F = 1.22×10⁻³⁹ N

For butterfly-rock:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.0×10⁻⁴ × 8) / 1²

F = 2.67×10⁻¹³ N

For electron-butterfly:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 9.11×10⁻³¹ × 5.0×10⁻⁴) / 1²

F = 3.04×10⁻⁴⁴ N

For rock-dog:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 8 × 20) / 1²

F = 1.07×10⁻⁸ N

From the above calculations, we have the gravitational attraction as:

Thus, arranging in increasing order, we have:

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Answer:

1. Sound waves are changed into electrical

2. Radio waves are released by transmitter

by radios

3. Radio waves are converted to sound waves

Explanation:

Answer:

The person in front of me is right

Explanation:

There’s my proof

When the skater pulls in her arms and leg, her moment of inertia decreases, which means her angular velocity must increase to conserve angular momentum. And, the ratio of the final to initial kinetic energy is 0.64.

The conservation of angular momentum tells us that the product of the moment of inertia and the angular velocity is constant, assuming no external torque acts on the system.

Let's assume that the skater's initial angular velocity is ω_i and her final angular velocity is ω_f. Then, we can write:

I_i ω_i = I_f ω_f

where I_i is the initial moment of inertia and I_f is the final moment of inertia.

We are given that I_f = 0.75 I_i, so we can rewrite the above equation as:

ω_f = (I_i / I_f) ω_i = (4/3) ω_i

The kinetic energy of the skater is given by:

K = (1/2) I ω^2

where I is the moment of inertia and ω is the angular velocity.

Therefore, the ratio of the final to initial kinetic energy is:

K_f / K_i = (1/2) I_f ω_f^2 / (1/2) I_i ω_i^2

K_f / K_i = (I_f / I_i) (ω_f / ω_i)^2

Substituting the expressions for I_f and ω_f, we get:

K_f / K_i = (0.75 / 1) ((4/3) ω_i / ω_i)^2

K_f / K_i = (0.75 / 1) (4/3)^2

K_f / K_i = 0.64

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Answer:

232 N

Explanation:

By Hooke's law, the force applied to a spring is proportional to the stretch of the spring, so

F = kx

Where F is the force, k is the spring constant and x is how much it is stretched.

So, replacing k by 58N/cm and x by 4 cm, we get

F = (58 N/cm)(4 cm)

F = 232 N

Therefore, the force applied is 232 N

Answer:

While centripetal force focuses towards the centre of a rotating path, the centrifugal force is just opposite to this, meaning it exerts a force to liberate a body from ...

Centripetal force is an inward force and centrifugal force is an outward force.

Centrifugal force is often referred to as inertial force or fictitious force.

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Explanation:

The correct answer is not provided in the given options A, B, C, or D. The distance from the axis at which the magnetic field caused by the current is equal in magnitude to Earth's magnetic field is 125 meters.

To find the distance from the conductor at which the magnetic field caused by the current is equal to the Earth's magnetic field, we'll use the formula for the magnetic field around a long straight conductor:

\(B = (de * I) / (2 * \pi  * r)\)

Where B is the magnetic field, μ₀ is the permeability of free space (\(4\pi  * 10^-7 Tm/A\)), I is the current, and r is the distance from the conductor. We want to find the value of r when B equals Earth's magnetic field (0.5 x 10⁻⁴ T).

\(0.5 * 10^-4 T = (4\pi  * 10^-7 Tm/A * 100 A) / (2 * \pi  * r)\)
To solve for r, we can first simplify the equation by cancelling the π terms:

\(0.5 * 10^-4 T = (4 * 10^-7 Tm/A * 100 A) / (2 * r)\)

Now, cancel out the A (Amperes) terms:

\(0.5 * 10^-4 T = (4 * 10^-7 Tm) / (2 * r)\)

Divide both sides by 4 x 10⁻⁷ T:

\(r = (0.5 * 10^-4 T) / (4 * 10^-7 T)\)

Simplify the equation:

r = \(0.5 * 10^3 m / 4\)
r = 500 / 4
r = 125

So, the correct answer is not provided in the given options A, B, C, or D. The distance from the axis at which the magnetic field caused by the current is equal in magnitude to Earth's magnetic field is 125 meters.

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Answer:

You will be able to tell whether the unknown cell is from an animal or from a plant through the knowledge of difference between plants and animal cells.

Explanation:

A cell can be defined as the simplest bit of living matter which exhibits a variety of shapes and sizes and that can exist independently.

When a slide of an unknown cell is studied under a microscope, different cell structures would be observed which would be used to conclude if the cell on the slide is a plant or animal cell.

The following features are observed in a plant cell:

--> cellulose cell wall is present

--> Chloroplast is present

--> A large central vacuole is present

--> Centriole is absent

The following features are observed in animal cell:

--> Cellulose cell wall is absent

--> Chloroplast is absent

--> Small vacuoles is present

--> Centriole is present

The difference between a plant and an animal cell can be seen from the features above and a clear knowledge of this will help the student tell whether the unknown cell is from an animal or from a plant.

According to the given statement the swimmer will travel 21.53 m from her starting point.

One of the variations is when the boat goes downstream in the same direction as the river. We refer to this as the upstream motion. However, we refer to the motion of a boat traveling upstream when it's doing inside the opposite direction as a stream or river.

Speed of swimmer in still water = Speed along river's width = 1.20 m/s

Thus, the swimmer's time to cross the river was 47/1.20, or 39.16 seconds.

Consequently, the swimmer is moving at 0.55 m/s downstream for 39.16 seconds.

During that period, the distance was equal to 0.55 * 39.16, or 21.53 m.

As a result, the swimmer will travel 21.53 m from her starting point.

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The complete question is -

A swimmer is capable of swimming 1.20 m/s in still water, if she is to arrive at a point directly across the stream of a 47- m -wide river whose current is 0.50 m/s, how far downstream (from a point opposite her starting point) will she land?