in parallel association, should the equivalent resistance be smaller or bigger than any individual resistor in the circuit? justify your answer.

Answer: The position from which three-fourths of the illuminated side of the moon will be visible from Earth is an option (B) - Gibbous.

Explanation: The Moon appears gibbous when more than half but not all of its illuminated side is visible from Earth.

The Moon is a celestial body that orbits Earth as Earth's only permanent natural satellite. The Moon is one of the brightest and largest objects in the night sky, with a diameter of 3,475 km.

The Moon appears to change shape as it orbits Earth, going through several phases throughout the lunar month. The illuminated side of the moon is the portion of the moon that is lit up by the sun.

The Moon is not actually glowing, but rather it reflects sunlight. We cannot see the Moon when it is not illuminated.

The Moon's phases depend on its position relative to the Sun and Earth, causing the illuminated side of the Moon to face Earth from different angles.

Thus, the position from which three-fourths of the illuminated side of the moon will be visible from Earth is an option (B) - Gibbous.

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Answer:

1.47 J/kg

120 m

Explanation:

The maximum height it can jump in a single leap 15 cm, = 0.15 m

to get the kinetic energy per kg of mass, we need to find the takeoff speed. The take off speed can be calculated by using the formula

v = \(\sqrt{2gh}\)

where h = 0.15

v = \(\sqrt{2 * 9.81 * 0.15}\)

v = \(\sqrt{2.94}\)

v = 1.715 m/s

energy per kg of mass =

1/2 * (1.715) = 1.47 J/Kg

TJe height a human can jump when compared to the flea is

2 m/2.5 mm * 15 cm =

2/0.0025 *0.15 =

800 * 0.15 = 120 m

The original pressure of the gas is approximately 1.758 torr.

To calculate the original pressure, we use Boyle's Law equation, which states that the product of initial pressure and volume is equal to the product of final pressure and volume for an isothermal process. By rearranging the equation and substituting the given values, we can solve for the original pressure. The result is approximately 1.758 torr.

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The exact magnitude of the force (in N) exerted by the system of charges on the 10 C charge is 88 N.

The exact magnitude of the force (in N) exerted by the system of charges on the 10 C charge is calculated by applying Coulomb's law as follows;

F = kq²/r²

where;

Since the charged is fixed, the distance will be constant, and the new equation becomes;

kq² = Fr²

q² = Fr²/k

q = √ ( Fr²/k )

q = √F x  √ (r²/k)

q₁/√F₁ = q₂/√F₂

when the new charge is 10 C, the new force is calculated as;

√F₂ = ( q₂ x √F₁ ) / q₁

√F₂ = ( 10 x √22 ) / 5

√F₂ = 9.38083

F₂ = (9.38083)²

F₂ = 88 N

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(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

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Answer:

Green ring

in my point of view

Answer:

blue

Explanation:

the blue will open the yellow, green, and red because the other colours are not connecting

A) The modulation index is undefined. B) The lower-side band (LSB) frequency is 99,500Hz. C) Percentage modulation = 20%

a) The modulation index (m) may be calculated through the usage of the formulation:

m = (Vmax - Vmin) / (Vmax + Vmin)

where Vmax and Vmin are the most and minimum amplitudes of the modulating signal, respectively.

In this case, the modulating sign is vi(t) = 90cos(2π500t) V. The most amplitude (Vmax) is 90 V, and the minimum amplitude (Vmin) is -90 V (for the reason that the cosine feature varies between -1 and 1).

Therefore, the modulation index is:

m = (Vmax - Vmin) / (Vmax + Vmin) = (90 - (-90)) / (90 + (-90)) = 180 / 0 = undefined

b) The carrier frequency is fc =100,000 Hz.

The higher-aspect band (USB) frequency is given via:

fUSB = fc + fm =100,000 Hz + 500 Hz = 100,500 Hz

The decrease-aspect band (LSB) frequency is given by way of:

fLSB = fc - fm = 100,000 Hz - 500 Hz = 99,500 Hz

c) If vi(t) = 120cos(2π500t) V, we will calculate the share modulation using the components:

Percentage modulation = (Vm - Vc) / Vc * 100%

in which Vm is the peak amplitude of the modulating sign and Vc is the peak amplitude of the service signal.

In this situation, Vm = 120 V and Vc = 100 V.

Percentage modulation = (Vm - Vc) / Vc * 100% = (120 - 100 ) / 100  * 100% = 20%

Increasing the modulation amplitude increases the percentage modulation. This outcome is in a larger version within the amplitude of the AM signal, which could result in extended sidebands and a more said modulation impact. The audio content of the modulating signal turns more distinguished, ensuing in a more potent modulation effect inside the AM signal.

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Answer:

i. Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

  Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii. cyclist B overtake cyclist A 6 km from the same starting point X.

Explanation:

From the question,

- Cyclist A and B cycled at an average speed of 15 km/h and 20 km/h respectively.

- Cyclist B started his journey 6 mins after cyclist A had started.

Let the cyclist A time be t.

Then, we can write that

For Cyclist A

Speed = 15 km/h

Time = t mins

For Cyclist B

Speed = 20 km/h

Time = (t - 6) mins

i) To determine the distances travelled by cyclist A and B 1h cyclist A had started his journey,

For Cyclist A

Speed = 15km/h

Time = 1h = 60 mins

From the formula

Speed = Distance / Time

Then,

Distance = Speed × Time

Putting the values into the equation,

Distance = 15km/h × 1h

Distance = 15 km

∴ Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

For cyclist B

Speed = 20km/h

Time = 1h - 6mins = 60mins - 6mins = 54mins = 54/60 hour = 0.9 h

Also, from

Distance = Speed × Time

Putting the values into the equation

Distance = 20km/h × 0.9h

Distance = 18 km

∴ Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii) To determine the distance cyclist B overtake cyclist A, that is, when the distance covered by cyclist A equals that covered by cyclist B.

First, we will determine the time at which the distances covered by both cyclists were equal.

From

For Cyclist A

Speed = 15 km/h

Time = t hour  

Distance = Speed × Time

Distance = 15t km

For Cyclist B

Speed = 20 km/h

Time = (60t - 6) mins = (t - 0.1) hour

Distance = 20 × (t - 0.1) = (20t - 2) km

Equate the distances

15t = 20t - 2

15t - 20t = -2

-5t = -2

5t = 2

t = 2/5

t = 0.4 hour

Hence, cyclist B overtake cyclist A 0.4 hour after cyclist A had started.

For the distance cyclist B overtake cyclist A,

From

Distance = (20t - 2) km

Distance = (20×0.4 - 2) km

Distance = (8 - 2) km

Distance = 6 km

Hence, cyclist B overtake cyclist A 6km from the same starting point X.

In the inelastic collision of the carts, the two carts fuse into an object with double the mass of the original cart. The works due to friction and the frictional force exerted to stop the two carts over 20 meters is 980 Joules.

Generally, To calculate the work due to friction and the frictional force exerted to stop the two carts over 20 meters, we will need to know the coefficient of friction between the carts and the track, the mass of the two carts, and the acceleration due to gravity.

The equation for work due to friction is:

Work = Friction force * Distance

The equation for the friction force is:

Friction force = Coefficient of friction * Normal force

The normal force is equal to the mass of the two carts multiplied by the acceleration due to gravity:

Normal force = Mass * Gravity

We can substitute these equations into the equation for work to get:

Work = (Coefficient of friction * Mass * Gravity) * Distance

To calculate the work, we need to substitute in the values for the coefficient of friction, mass, gravity, and distance. Let's say the coefficient of friction is 0.5, the mass of the two carts is 10 kilograms, and the acceleration due to gravity is 9.8 meters per second squared. The distance the carts travel is 20 meters.

Substituting these values into the equation for work, we get:

Work = (0.5 * 10 * 9.8) * 20

Solving this equation gives us a final value for the work of: 980 Joules.

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Answer:

probably ounces or grams

Explanation:

Answer: 29,050

Explanation:

If you notice this is a add and multiply problem .

All you are doing is finding the total linear momentum .

You would multiply 1,300 x 6= 7800

Then you would also multiply 850 x25=29050

You would add both of them (7800+21250)

And your final answer would be 29050kg •m/s

The first law of thermodynamics outlines how energy can be converted from one form into another while also stating that the amount of energy remains constant. claims that the energy content is constant.

The first law of thermodynamics states that during an interaction between a system and its surroundings, the system must gain precisely as much energy as the surrounds lose during the contact.

The first rule of thermodynamics is sometimes known as the law of conservation of energy. The first law asserts that although energy can be transformed from one form to another, it cannot be created or destroyed.

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To set up two glass tubes with closed ends, we can follow the given instructions by using a cotton cloth. Firstly, acquire two glass tubes with a diameter of 4 cm each. These tubes should be open at one end.

Next, take a piece of cotton cloth and securely tie it around the open end of each tube. Ensure that the cloth tightly covers the opening, creating a closed end.

The purpose of closing one end of the tube is to create a container or chamber that can be used for various experiments or demonstrations. By closing one end, we restrict the flow of any substances placed inside the tube, allowing for controlled observations or reactions within the confined space.

It's important to note that the cotton cloth should be tied tightly enough to prevent any air or substance from escaping or entering the tube. This ensures that the closed end remains sealed during experiments.

Therefore, With these prepared glass tubes, you can now explore different experiments involving gases, pressure, or other reactions that require a closed chamber. The closed-end design allows for the containment and manipulation of substances within the tubes, enabling a range of scientific investigations.

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The wind direction changed from morning to night because  land and water absorbing solar energy unequally.

Convection is said to occur when there is heat transfer by an actual movement of participles from place to place. The movement of air mass (wind) is affected by the relative amounts of solar energy absorbed by the land and sea.

Hence, the wind direction changed from morning to night because  land and water absorbing solar energy unequally.

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The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).

What is  equation of motion?

The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.

To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.

The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.

In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.

Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).

Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).

Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).

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A person pushes a grocery cart with a force of 300 N for 5 m, resulting in a speed of 3 m/s. The work done by friction is approximately -1140 J. (Answer: B)

The work done by friction can be calculated using the equation: work = force × distance × cos(θ), where θ is the angle between the force and the direction of motion.

In this case, the force of friction opposes the motion and is in the opposite direction of the pushing force. Since the pushing force is 20" below the horizontal, the angle θ is 20°. Therefore, the work done by friction is given by: work = (-300 N) × (5 m) × cos(20°).

Calculating this expression gives a result of approximately -1140 J. Hence, the correct answer is (B) -1140 J, indicating that the work done by friction is negative, as it acts against the motion of the cart.

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Answer:

20,000 J

Explanation:

    Work = Force multiplied by Displacement

The work done on a object can only be calculated when the applied force is causing an object to move in the direction the force is being applied towards.

The given information:

Billy applies a form of 800N on a staller car and the total distance it was pushed was 25 meters.

To calculate the work done, substitute the given information into the formula for work.

Work = (800 N) × (25 m)

Work = 20,000 J

Note: Remember the SI unit for Work is Joules (J).

Answer:

In the physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles. Particle physics and nuclear physics study these particles and how they interact.

Explanation:

Answer:

In physical sciences, subatomic particles are smaller than atoms. They can be composite particles, such as the neutron and proton; or elementary particles, which according to the standard model are not made of other particles.

Answer:

It creates bad air so that’s like air pollution I guess

Explanation:

Nuclear engineer Meena Mutyala argues that nuclear power is an environmentally technology benign, operating with essentially no emissions.

Nuclear fusion, commonly referred to as fission of uranium nuclei, is the source of nuclear energy. The outcome is the production of heat, which subsequently produces steam, which produces energy in a turbine generator. Because nuclear energy plants don't burn fuel, they don't produce greenhouse gas emissions.

Nuclear engineers are researching new uses for nuclear energy or material. They look into nuclear accidents and gather data to aid in the creation of preventative measures. Others look into the practicality of several methods for utilizing, managing, and recovering radioactive material.

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The intensity at a point 10 m from the source is approximately 6.36 x 10^-4 W/m^2.

The intensity level at a point 18 m from the source is approximately 88.03 dB.

(a) To calculate the intensity at a point 10 m from the source, we can use the formula:

Intensity = Power / (4πr^2)

where Power is the total power emitted by the loudspeaker and r is the distance from the source.

The power emitted is 0.80 watts and the distance is 10 m, we can substitute these values into the formula:

Intensity = 0.80 / (4π(10^2))

Intensity ≈ 0.80 / (400π)

Using a calculator, we can evaluate this expression:

Intensity ≈ 0.80 / 1256.64

Intensity ≈ 6.36 x 10^-4 W/m^2

Therefore, the intensity at a point 10 m from the source is approximately 6.36 x 10^-4 W/m^2.

(b) The intensity level (IL) in decibels (dB) can be calculated using the formula:

IL = 10 log10(I / I0)

where I is the intensity at a particular point and I0 is the reference intensity, which is typically set at the threshold of human hearing (I0 = 1 x 10^-12 W/m^2).

The intensity at a point 18 m from the source is already calculated as 6.36 x 10^-4 W/m^2, we can substitute these values into the formula:

IL = 10 log10((6.36 x 10^-4) / (1 x 10^-12))

Using a calculator, we can evaluate this expression:

IL ≈ 10 log10(6.36 x 10^8)

IL ≈ 10 x 8.803

IL ≈ 88.03 dB

Therefore, the intensity level at a point 18 m from the source is approximately 88.03 dB.

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(a) The intensity at a point 10 m from the source is approximately 0.00637 W/m².

(b) The intensity level 18 m from the source is approximately 106 dB.

(a) The intensity at a point 10 m from the source can be calculated using the formula:

Intensity = Power / (4πr²)

where r is the distance from the source. Plugging in the given values:

Intensity = 0.80 W / (4π(10 m)²)

Intensity ≈ 0.00637 W/m²

(b) The intensity level can be calculated using the formula:

Intensity Level = 10 log₁₀ (Intensity / I₀)

where I₀ is the reference intensity, which is typically 10⁻¹² W/m². Plugging in the given values:

Intensity Level = 10 log₁₀ (0.00637 W/m² / 10⁻¹² W/m²)

Intensity Level ≈ 106 dB

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The recoil velocity of the gun if a bullet of mass 4.2 g was fired at 965 m/s is 0.056 m/s.

This is the backward velocity of a gun when it is fired.

To calculate the recoil velocity of the gun, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence the recoil velocity of the gun is 0.056 m/s.

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Answer:

90

Explanation:

cause

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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There is no electric field along the positive z axis for this configuration.

The correct answer is (e) there is no electric field along the positive z axis. This is because the disk has a uniform positive surface charge density and is centered on the origin in the x-y plane.

Since the disk is symmetric around the z axis, the electric field contributions from all points on the disk along the z axis cancel each other out.

The electric field vectors from opposite sides of the disk point in opposite directions along the z axis, resulting in a net electric field of zero.

There is no electric field along the positive z axis for this configuration.

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The purpose of working out is described as an example of motivation, as Randy works out every day because he wants to make the football team, so option A is correct.

In humans and other animals, motivation is what causes an activity to start, continue, or end at a specific time. The interpretation of motivational states as internal forces that increase an agent's propensity to engage in goal-directed behavior is common. Conflicting theories exist on the makeup of motivated moods. They are known as content theories, and they aim to explain the typical or consistent motives.

Behaviorist theories seek to elucidate behavior solely in terms of the relationship between the circumstance and outward, apparent conduct, avoiding any explicit mention of conscious mental states.

Therefore, the purpose of Randy's working out daily is described as an example of motivation, he is motivated to make a football team.

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This is the answer tab

Firstly, we need to write the formulas for both the gravitational force and electric force. Our gravitational force is:

And the electric force is:

We can see that these forces have almost equal formulas. What we want is Fe/Fg. Before this, we can simplify the forces, as both particles have the same charge and mass. We're left with the following:

And

By dividing both, we get

We have d^2 on the numerator and denominator. We can elimante the distance then, as it is different from zero. We have the following:

We can then replace our values with the constants. k is Coulomb's constant, q is the charge of a proton, G is Newton's constant, and m is the mass of a proton. We finally get

So, the electric force is 1.2386*10^36 times higher than the gravitational. The most interesting about this, is that it doesn't depend on the distance the two of them are apart.

The two-input LUT is a very versatile logic element that can be used to implement a wide variety of functions.

a) Behavioral modeling in Verilog HDL is a high-level language that allows you to describe the behavior of a digital circuit without worrying about the underlying hardware implementation. This makes it a very effective way of describing digital circuits, as it allows you to focus on the functionality of the circuit without getting bogged down in the details of how it will be implemented.

b) The main difference between using a general-purpose processor and digital design in developing an electronic application is that a general-purpose processor is designed to be able to execute a wide variety of instructions, while digital design is specifically designed to implement a particular function. This means that a general-purpose processor may not be the most efficient way to implement a specific function, as it may require more hardware resources than a custom-designed digital circuit.

c) The four principles for effectively and quickly achieving the design are:

Regularity: The design should be as regular as possible. This means that the design should be made up of a small number of repeated units, rather than a large number of unique units.

Simplicity: The design should be as simple as possible. This means that the design should be easy to understand and implement.

Efficiency: The design should be as efficient as possible. This means that the design should use the minimum amount of hardware resources.

Verifiability: The design should be verifiable. This means that the design should be able to be checked to ensure that it meets its specifications.

The regularity principle can be explained by the following example. If you are designing a digital circuit to add two numbers, you could use a design that is made up of a small number of repeated units, such as adders and registers. This would be a more regular design than a design that used a large number of unique units, such as a custom-designed adder. A more regular design is easier to understand and implement, and it is also more likely to be efficient.

d) A two-input LUT in the FPGA implements a logic f = a b + ab by storing the truth table for the function in its memory. When the inputs to the LUT are applied, the LUT will output the corresponding value from its memory.

For example, if the inputs to the LUT are a = 0 and b = 1, the LUT will output the value 1, because the truth table for f shows that the output is 1 when a = 0 and b = 1.

The two-input LUT is a very versatile logic element that can be used to implement a wide variety of functions. It is a key building block in many FPGA designs.

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