If we want to apply Gauss's Law on an infinite length line of charges, how much open surfaces we can obtain in the closed cylindrical Gaussian surface?

Answer:

d. ice

Explanation:

Answer:

The correct answer is C. Ice, you know, since it's so slippery. lol

pls give brainliest

Answer:

7.34 meters

Explanation:

If the entire Kinetic energy is converted to Potential energy

1/2 mv^2 = mgh          didvide both sides by ' m '

1/2 v^2 = gh                 solve for 'h'

1/2 v^2 / g = h              plug in the given values  ,   g = 9.81 m/s^2

1/2 (12)^2 / 9.81 = h = 7.34 m

Answer:

power can be expressed as P=work/change in time,instead of P=change of energy/change in time because the change of energy is basically the work done.

Answer:

P=W/T....is the answer

The Hall effect refers to the phenomenon in which a voltage is generated across a conductor transverse to an applied magnetic field and current flow. the Hall effect and its associated equations is crucial in many electrical and electronic applications.

The Hall voltage is directly proportional to the magnetic field strength and the magnitude of the current flow. It is also affected by the electron density and charge of the conductor material. Mathematically, the expression for Hall voltage (VH) can be given as VH = (IB / Nea) * B where IB is the current flow, ne is the electron density of the conductor material, A is the cross-sectional area of the conductor, and B is the applied magnetic field. The expression shows that the Hall voltage is directly proportional to the product of current flow and magnetic field strength. However, it is inversely proportional to the electron density and the cross-sectional area of the conductor. In summary, the Hall voltage can be expressed in terms of current, magnetic field, electron density, charge, and area of the conductor using the above mathematical equation. Understanding the Hall effect and its associated equations is crucial in many electrical and electronic applications.

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The frequency of the G allele in the population is 0.4, the correct option is B. 0.4.

The frequency of beetles with glabrous elytra in a population of ground beetles is 0.36. The frequency of the G allele is to be calculated, assuming that the population is in Hardy-Weinberg equilibrium.

What is Hardy-Weinberg equilibrium? The Hardy-Weinberg equilibrium is a model that describes the genetic makeup of a non-evolving population.

This model postulates that the genetic variation in a population remains constant from generation to generation in the absence of disturbing influences such as mutation, migration, or natural selection.

According to the Hardy-Weinberg equilibrium, the frequency of alleles and genotypes remains constant if certain conditions are met.

The Hardy-Weinberg equilibrium is represented by the following equation:p2 + 2pq + q2 = 1 Where:p2 = frequency of homozygous individuals (GG)2pq = frequency of heterozygous individuals (Gg)q2 = frequency of homozygous recessive individuals (gg)p + q = 1Now let's move on to the calculation of the frequency of the G allele.

The frequency of individuals with the gg genotype can be obtained from the following equation:q2 = 0.36q2 = 0.36^(1/2)q = 0.6

The sum of the frequency of all genotypes must be equal to 1, which can be used to calculate the frequency of the G allele:p + q = 1p = 1 - qp = 1 - 0.6p = 0.4The frequency of the G allele in the population is 0.4.Therefore, the correct option is B. 0.4.

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The time it takes for the car to fall from a certain height would not be affected by the time it takes for the ball to fall, even if the car's velocity were doubled.

If the car's velocity were doubled, the time it takes for the car to fall would not be affected by the time it takes for the ball to fall. This is because the time taken for an object to fall from a certain height is determined by the acceleration due to gravity and the distance from the ground, but not by the object's initial velocity.

The acceleration due to gravity is constant, which means that the time taken for an object to fall a certain distance is also constant. This means that the time taken for the ball to fall and the car to fall from the same height would be the same, regardless of the car's velocity.

This can be explained by the equation of motion for a falling object:

d = 1/2gt²,

where d is the distance from the ground, g is the acceleration due to gravity, and t is the time taken to fall.

Since the acceleration due to gravity is constant, the time taken for the car and the ball to fall the same distance would be the same, regardless of their initial velocity.

Therefore, if the car's velocity were doubled, the time it takes for the car to fall would be the same as before, but it would be moving faster when it hits the ground.

In conclusion, the time it takes for the car to fall from a certain height would not be affected by the time it takes for the ball to fall, even if the car's velocity were doubled.

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Answer: Medial rotation

Lateral rotation

Supination

Pronation

Opposition

Explanation:

Medial rotation can be defined as the rotation of any of the body part towards the middle axis of the body. For example, movement of leg bones so that the toes are pointed towards inward.

Lateral rotation is the movement of the body parts or bones away from the middle axis of the body. For example. outward circle created by the upper limbs directed outwards.

Supination is the rotation of the forearm in such a way so that the palm is directed upwards so that hand can receive money or hand can slap a person.

Pronation is the downward motion of hand to put things down.

Opposition is the movement of the bones of the fingers the metacarpals which allow the thumb to touch the fingertips.

Answer: Reflecting telescopes focus light with a series of mirrors, while refracting telescopes use lenses.

Explanation:

When two objects collide and stick together, their combined speed after the collision can be calculated using the conservation of momentum principle. The principle states that the total momentum of an isolated system remains constant if no external forces act on it.

In this case, the initial momentum of the two players before the collision can be calculated as follows:

75 kg * 6 m/s + 100 kg * (-8 m/s) = 450 kg m/s

After the collision, the players stick together, and their combined speed can be calculated as follows:

Final momentum = (75 kg + 100 kg) * v

450 kg m/s = 175 kg * v

v = 450 kg m/s / 175 kg = 2.57 m/s

So, the combined speed of the two players just after the collision would be 2.57 m/s.

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Compare the amount of time needed is for projectile to go from its initial velocity to its highest point. (A) for a resistive force of zero.

A number called velocity describes the speed and direction of a point's motion. Because it has both direction and magnitude, velocity is referred to as a linear momentum and cannot be fully expressed in numerical terms, unlike time or length, that are scalar numbers.

According to the equation v = s/t, velocity (v) is indeed a vector quantity which quantifies displacement (and change in position, s), over change in time (t).

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Just the way you wrote it in your question is OK:

"DC voltage" .

Other ways that work:

___ V(dc)

___ Volts DC

A typical sign for a  DC circuit's voltage. Current and voltage are both constant in DC circuits. Because further information cannot be added to symbols in the SI, write "DC 12 V" instead of "12 VDC".

The voltage is always constant and the electricity flows in one direction with direct current. Contrarily, with alternating current, the voltage alternates between positive and negative states on a periodic basis, and the current's direction does the same.

Any electrical gadget that relies on a battery as its power source uses direct current. Battery charging is another purpose for it, so rechargeable gadgets like laptops .

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Answer:

The velocity of a wave is equal to the product of its wavelength and frequency (number of vibrations per second) and is independent of its intensity. ... Longitudinal waves, such as sound, are transmitted through media with velocities depending on the density and elasticity of the substance

Answer:

ididate is a good one and

Answer:

That's why if you lean against the wall, you don't just fall through it. The wall pushes back on you as hard as you push on it, and you and the wall stay in place. If you throw something, you put more force behind it than just leaning on it, so it pushes back with more force.

Explanation:

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A commercial motor vehicle’s (CMV’s) engine controls are used for a variety of purposes such as managing fuel consumption, controlling speed, and maximizing engine performance.

Engine controls are an essential component of CMVs as they determine how the engine operates, which ultimately impacts the vehicle's overall performance and safety. Engine controls are primarily used to regulate fuel injection and the air/fuel mixture to ensure efficient combustion and optimum engine performance. They also help to manage the transmission system, providing the driver with smooth gear transitions and optimal acceleration.

Engine controls also manage the exhaust gas recirculation (EGR) system, which helps to reduce emissions and improve fuel economy. Other important features of CMV engine controls include cruise control and speed limiting systems. Cruise control allows the driver to set a specific speed, which the vehicle then maintains without any additional input. Speed limiting systems are designed to restrict the maximum speed of the vehicle, providing additional safety for drivers and other road users.Finally, engine controls include safety features such as automatic shutdown systems, which automatically switch off the engine if the vehicle is idling for an extended period or if the driver forgets to turn off the ignition. This prevents accidents and helps to save fuel.

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The engine controls of a commercial motor vehicle (CMV) regulate and manage the performance of the engine. Throttle control, ignition control, and fuel system control are examples of engine controls in a CMV.

The engine controls of a commercial motor vehicle (CMV) are used to regulate and manage the performance of the engine. These controls include various components and systems that enable the driver to control the speed, power, and operation of the vehicle's engine.

Examples of engine controls in a CMV may include:

These engine controls work together to optimize engine performance, fuel efficiency, and emissions in a commercial motor vehicle.

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We have that for the Question it can be said that The maximum height reached  by the first object will be  100 times  that of the other.

From the question we are told

One object is thrown vertically upward with an initial velocity of 100 m/s and  another object with an initial velocity of 10 m/s. The maximum height reached  by the first object will be

that of the other.

a. 10,000 times

b. none of these

c. 1000 times

d. 100 times

e. 10 times

Generally the equation for the velocity is mathematically given as

\(v=\frac{d}{t}\\\\Where\\\\\frac{H_{max}_1}{H_{max}_2}=\frac{(V_1)^2}{(v_2)^2}\\\\\frac{H_{max}_1}{H_{max}_2}=\frac{10000}{(10}\\\\\)

\((H_{max})_1=100*(H_{max})_2\)

Therefore

The maximum height reached  by the first object will be  100 times  that of the other.

\((H_{max})_1=100*(H_{max})_2\)

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Answer:

magnitude and direction

Answer:Control S, Command S on MAC=Save

Answer:

330 meters per second

Explanation:

Δx = vt

660 = 2v

Divide both sides by 2 to get 330 = v

Option A i.e. Uranus is the only planet in the solar system whose axis of rotation lies close to the plane of the solar system.

The correct answer is a. Uranus. Uranus is the only planet in the solar system whose axis of rotation is tilted at an angle of almost 98 degrees relative to the plane of the solar system. This means that Uranus essentially rolls around the sun on its side, while the other planets rotate more or less upright.  This is in contrast to the other planets in the solar system, whose axes of rotation are more or less perpendicular to the plane of the solar system.

Hence, the correct answer is option A i.e. Uranus.

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Answer:

Sam's average velocity for the entire walk is approximately;

0.075 km/min

Explanation:

The given parameters of the Lake Loop Trail are;

The distance of the trail Sam takes his dog to walk around = 5-km

From the table for the position and time, we have;

\(\begin{array}{ccc}Position \ (km) &&Time \ (min)\\0&&0\\1&&12\\2&&22\\3&&33\\4&&54\\5&&67\end{array}\)

Plotting the given points gives the attached chart created with Microsoft Excel

The coordinates of the points are A(0,0), B(67, 5), C(67, 0)

By the definition of average velocity, we have;

\(Average \ velocity = \dfrac{Total \ distance}{Total \ time \ taken}\)

From the plot of the points therefore, we have;

\(Average \ velocity= \dfrac{Length \ of BC}{The \ time \ elapsed \ between \ AC} = \dfrac{5 \ km - 0 \ km}{67 \ min - 0 \ min} = \dfrac{5 \ km}{67 \ min} \approx 0.075 \ km/min\)Therefore;

Sam walked at an average velocity of approximately 0.075 km/min.

The gazelle has zero average acceleration because it's moving at a constant speed. Constant speed means no change in speed means zero acceleration.

The cheetah, on the other hand, changes its speed from 0 m/min to 1820 m/min in a matter of 3 seconds, so its average acceleration is

a[ave] = (1820 m/min - 0 m/min) / (3 s)

… = (1820 m/min) / (3/60 min)

… = 36,400 m/min²

… = (36,400 m) / (60 s)²

… = 91/9 m/s² ≈ 10.1 m/s²

Answer:

chemical energy

Explanation:

A form of energy is stored in the bonds between atoms is known as chemical energy.

Answer:

Chemical energy

Explanation:

Chemical energy because

it's energy stored in the bonds of

the atoms & molecules.

40Ω connected across 40 V power supply dissipates most electrical energy. (i)

The electrical power dissipated in a circuit is given by the formula P=V²/R, where P is the power in watts, V is the voltage in volts, and R is the resistance in ohms.

To determine which circuit dissipates the most electrical power during operation, we can calculate the power for each circuit and compare them.

For circuit i, P = (40 V)²/40 Ω = 40 W.

For circuit ii, P = (15 V)²/15 Ω = 15 W.

For circuit iii, P = (20 V)²/20 Ω = 20 W.

For circuit iv, P = (5 V)²/5 Ω = 5 W.

Therefore, circuit i dissipates the most electrical power during operation at 40 watts.

The amount of electrical power dissipated in a circuit depends on the voltage and the resistance. A higher voltage or a lower resistance will result in more power dissipation.

In this case, circuit i has both a higher voltage and a higher resistance compared to the other circuits, resulting in the highest power dissipation. This demonstrates the importance of considering both voltage and resistance when calculating power in a circuit.

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Complete question:

which dissipates the most electrical power during operation? (note: 1 horsepower = 746 watts)

i) 40Ω connected across 40 V power supply.

ii) 15Ω connected across 15 V power supply.

iii) 20Ω connected across 20 V power supply.

iv) 5Ω connected across 5 V power supply.

Answer:

b

Explanation:

An insulator does not transfer thermal or electrical energy but a conductor does

The horizontal speed of Tom when it slid off the table is 4.89 m/s.

The time of motion of Tom is the time taken for Tom to fall from the top of he table to ground level.

It can also be described as time spent in air by Tom.

h = ut + ¹/₂gt²

where;

h = 0 + ¹/₂gt²

h = ¹/₂gt²

t = √(2h/g)

t = √(2 x 1 / 9.8)

t = 0.45 s

The horizontal speed of Tom when it slid off the table is calculated as;

v = x/t

where;

v = (2.2 m) / (0.45 s)

v = 4.89 m/s

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Answer:

High current flow

Explanation:

Generally , the measuring instruments used by technician also have some resistance, though its value is very low  . So when high current is present in the circuit , that current also passes through the instrument which creates a good potential drop across the instrument . So the external voltage used in the circuit measures less voltage .

Answer:

1.11 V

Explanation:

Given that the Einstein photoelectric equation states that;

KE = E - Wo

E = energy of incident photon

Wo= work function of the metal

E = hf = 6.64 x 10-34 * 6 x 1014

E = 39.84 * 10^-20 J or 3.98  * 10^-19 J

KE = 3.98  * 10^-19 J - 2.2 x 10-19J

KE = 1.78 *  10^-19J

We convert this value of KE to electron volts

KE = 1.78 *  10^-19J/1.6 x 10-19C

KE = 1.11 eV

Hence; 1.11 V will be just sufficient to stop electrons emitted by the sodium photo-plate reaching the collector plate.

Answer:

the answer is 1, oil and water

Answer:

It is oil and water i took the quiz and got it correct !

Hope this helps you! :D

1. The magnetic flux through the small loop when the current through the solenoid is 2.50 A is approximately 0.00942 T·m²

2. The mutual inductance to be approximately 0.00377 H.

3. The induced emf is approximately -0.0226 V.

4. The induced emf in the loop would also be zero.

The magnetic flux through a loop is determined by the number of turns, the current, and the area of the loop.

It is given by the equation Φ = NAB, where Φ is the magnetic flux, N is the number of turns, A is the area, and B is the magnetic field.

1. The magnetic flux through the small loop when the current through the solenoid is 2.50 A can be calculated using the formula Φ = NAB, where Φ is the magnetic flux, N is the number of turns, A is the area, and B is the magnetic field.

Given that the solenoid has \(1.50 \times 10^4\) turns, and the radius of the small loop is 0.0200 m, we can calculate the area of the loop as \(A = \pi r^2\).

Plugging in the values, we find the magnetic flux to be approximately 0.00942 T·m².

2. The mutual inductance of the combination can be calculated using the formula M = Φ₂/I₁, where M is the mutual inductance, Φ₂ is the magnetic flux through the small loop, and I₁ is the current through the solenoid.

From the previous calculation, we know the magnetic flux is 0.00942 T·m², and if the current through the solenoid is 2.50 A, we can calculate the mutual inductance to be approximately 0.00377 H.

3. The induced emf (electromotive force) in the loop can be calculated using the formula ε = -M(dI₁/dt), where ε is the induced emf, M is the mutual inductance, and dI₁/dt is the rate of change of current through the solenoid.

Given that the rate of change of current is 6.0 A/s, and the mutual inductance is 0.00377 H, we can calculate the induced emf to be approximately -0.0226 V.

4. If the loop is oriented so that its axis is perpendicular to the axis of the solenoid, instead of parallel, the magnetic flux through the loop would be zero.

Therefore, the induced emf in the loop would also be zero.

5. The self-induced emf in the solenoid due to the changing current can be calculated using the formula ε = -L(dI₁/dt), where ε is the self-induced emf, L is the self-inductance of the solenoid, and dI₁/dt is the rate of change of current.

However, the value of the self-inductance (L) is not provided in the given information, so it cannot be determined with the given data.

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