A current of 0.75 passes through a flashlight bulb that is connected to a 3.0-V battery. Calculate the bulb's resistance.

Answer:

C.

Explanation:

the earth has a high greavitational pull

Answer: C the person and earth

Explanation: I just answered it on a p e x

Answer:

14,300 lines per cm

Explanation:

Given that

The wavelength of visible light ranges from 400 nm to 400nm

It is possible to find the maximum number of lines per cm. This maximum number of lines per cm is reciprocal of the least distance separating two adjacent slits, using the following equation.

mλ = dsin (θ), where

m = order of diffraction.

λ = wavelength of the incident light.

d = distance between the centers of the two slits.

θ = angle of diffraction of the mth order.

In order to find the least separation that allows the observation of one complete order of spectrum of the visible region, we make use the maximum or highest wavelength of the visible region that we are given, which is 700 nm.

d = mλ / sin (θ)

Again, we need the distance d to be the smallest, so sin (θ) must be the greatest, and for sin (θ) to be the greatest, it has to be equal to 1. Using the longest wavelength is the best idea because when the smallest wavelength is used the longest wavelength would not be diffracted.

d = mλ / sin (θ)

d = 1 * 700nm / 1

d = 700 nm

Next, we say that

n = 1/d

n = 1 / 700 x

n = 1, 430,000 lines per m, converting to cm, we have n = 14,300 lines per cm

Answer:

v =2.02

Explanation:

v^2=0.05-4.9

v^2=-4.85

square root both side

v=2.02

^^^^this is a not a perfect square  

The speed of propagation of the transverse wave in the wire is 4800 cm/s. The tension in the wire is 15.71 N and the maximum transverse acceleration is 11,105,600 cm/s².

A transverse wave is a type of wave in which the particles of the medium move in a direction perpendicular to the direction of energy propagation. Examples of transverse waves include light, radio, and other types of electromagnetic waves.

The speed of propagation is the speed at which a signal travels through a medium, such as a wire, fiber optic cable, or radio wave.

(a) Speed of propagation of the transverse wave in the wire =

v = λf

= (80.0 cm) (60.0 Hz)

= 4800 cm/s

b)Tension in the wire = F/A

= m(ω² X A_max) / A

= (40.0 g)(2π² X 60²  X 0.300 cm²) / (80.0 cm)²

= 15.71 N

(c) Maximum transverse velocity = A_max X ω

= 0.300 cm X 2π X 60 Hz

= 1842.4 cm/s

Maximum transverse acceleration = A_max X ω²

= 0.300 cm X (2π X 60)²

= 11,105,600 cm/s²

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Answer:

It gets a new rock when it is getting older

Explanation:

pls give me brainlyest

most common finishes applied to aluminum curtain wall componets is fluoropolymer paint or anodized finish.

Anodizing is an electric process that forms a very thick oxide layer with integral color .

An anodized surface is very durable and can be had in many colors , although it is not generally capable of producing very bright colors .

Anodizing is commonly used to improve the corrosion resistance and wear resistance of aluminum parts. It can also provide other desirable benefits, like improved heat dissipation and the ability to accept dyes.

Unlike paints and coatings, anodizing does not apply an external product to the exterior of the aluminum. Instead, an electrochemical process is used to stimulate the naturally-occurring layer of aluminum oxide into growing thicker. This protects the underlying aluminum from its environment, and can even accept dyes. However, the color possibilities for anodizing are not as abundant as in powder coating.

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Answer: 180

Explanation: Acellus

This equation gives the magnitude of the electric field generated by a point charge Q. The distance r in the denominator is the separation between the point of interest and the point charge Q. Or the center of a spherical charge.

It is simple to determine the size of the electric field by calculating the force per charge on the test charge. From this definition, the common metric units for electric field strength are derived. Electric field units would be force units divided by charge units, as the definition of an electric field is a force per charge.

F = |qvBsin()| calculates the magnetic force's magnitude. The following factors are involved in determining the force's direction. A plane is first defined by the magnetic field vector, B, and the velocity vector, v. In or out of this plane, the magnetic force is perpendicular to it.

Therefore, The electric force F, or Coulomb force, exerted per unit positive electric charge q at that place can be used to determine an electric field's strength, or E = F/q.

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Answer:

100 ml de una disolucion 05 M de sulfate de vivre

Kieran had a greater average speed than Jevon. Let us go into more detail in the explanation below. To compare the average speeds of Kieran and Jevon, we need to find out the speed of each person.

We can use the formula speed = distance/time. Kieran ran 8 laps in 18 minutes, which means he ran 8/18 = 0.44 laps per minute. To find out Kieran's speed, we need to multiply this by the length of one lap. If we assume that the length of one lap is 400 meters, then Kieran's speed is:0.44 laps per minute × 400 meters per lap = 176 meters per minute Jevon ran 6 laps of the track, but we don't know how long it took him.

Therefore, we can't calculate his speed directly. However, we can still compare his speed to Kieran's by using ratios. If we assume that Jevon ran the same length of track as Kieran, then we can write the following equation: Kieran's speed/Jevon's speed = Jevon's time/Kieran's time.

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Answer:

Explanation:'Distance' is the total length travelled by an object. The standard unit is the 'metre'.

A distance-time graph shows how far an object has travelled in a given time.

Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom)

The distance of the Cepheid variable from us is approximately 0.009472 Mpc. Thus, the correct answer is option d) 0.3 Mpc.

To find the distance of the Cepheid variable from us, we can use the period-luminosity relationship for Cepheid variables. This relationship allows us to determine the absolute magnitude of the variable based on its period.

The formula for calculating the absolute magnitude (M) is:

M = -2.43 * log₁₀(P) - 4.05

Where P is the period of the Cepheid variable in days.

In this case, the period of the Cepheid variable is given as 17 days. Plugging this value into the formula, we get:

M = -2.43 * log₁₀(17) - 4.05

M ≈ -2.43 * 1.230 - 4.05

M ≈ -2.998 - 4.05

M ≈ -7.048

The apparent magnitude of the Cepheid variable is given as 23.

Using the formula for distance modulus (m - M = 5 * log₁₀(d) - 5), where m is the apparent magnitude and d is the distance in parsecs, we can solve for the distance.

23 - (-7.048) = 5 * log₁₀(d) - 5

30.048 = 5 * log₁₀(d)

6.0096 = log₁₀(d)

d ≈ 10^6.0096

d ≈ 9472 parsecs

Converting parsecs to megaparsecs (Mpc), we divide by 1 million:

d ≈ 9472 / 1,000,000

d ≈ 0.009472 Mpc

Therefore, the distance of the Cepheid variable from us is approximately 0.009472 Mpc. Thus, the correct answer is option d) 0.3 Mpc.

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The quantity of charge on a plastic tube that has been rubbed with animal fur and gained 3. 8 x 10^9 electrons is The quantity of charge on the plastic tube is 3.8 x 10^9 electrons.

The quantity of charge on the plastic tube is 3.8 x 10^9 electrons. To calculate this value, we can use the equation q = n*e, where q is the charge, n is the number of electrons and e is the elementary charge (1.6 x 10^-19 C). Substituting in the values given, we get q = 3.8 x 10^9 * 1.6 x 10^-19 = 6.08 x 10^-10 C.  This means that the plastic tube has gained a charge of 6.08 x 10^-10 Coulombs, which is equivalent to 3.8 x 10^9 electrons.

This can be explained by the process of triboelectricity, which is the transfer of electrons between two materials due to rubbing them together. In this case, the animal fur must have had a higher electron affinity than the plastic, which caused electrons to be transferred from the fur to the plastic tube.

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To calculate the depth of the sea using the given information, we need to consider the speed of the wave and the time it takes for the wave to travel down to the sea bed and back.

The time taken for the wave to travel down to the sea bed and back is twice the time it takes for the reflected wave to be received. In this case, the reflected wave is received after 0.5 seconds, so the total round trip time is 2 * 0.5 seconds = 1 second.

Now, we need to determine the speed of the wave. The speed of a wave can be calculated using the formula:

\(Speed = \frac{Distance}{Time}\)

In this case, the distance is twice the depth of the sea because the wave travels down to the sea bed and then back up to the surface. Therefore, we have:

\(Speed = \frac{2 \times Depth}{Time}\)

Rearranging the formula to solve for the depth, we get:

\(Depth = \frac{Speed \times Time}{2}\)

Since we are not given the speed of the wave, we cannot calculate the exact depth. The speed of the wave will depend on the properties of the medium through which it is traveling (such as water) and may need to be provided in the question.

Once the speed is known, we can substitute it into the formula along with the given time of 1 second to calculate the depth of the sea. Without the speed value, we cannot determine the exact depth.

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The correct answer is (I) while the impulse is applied the object accelerates & (III)while the impulse is applied the object's velocity changes.

Impulse is a quantity that describes the change in momentum of an object due to a force acting on it for a certain amount of time.

Impulse can be defined as a force acting on an object for a specific amount of time, resulting in a change in the object's momentum.The SI unit for impulse is the newton-second (Ns) and is defined as the magnitude of the force multiplied by the time for which it acts.

The direction of the impulse is the same as that of the force. The magnitude of the impulse is equal to the magnitude of the change in momentum of the object.

So, it can be concluded that If a net impulse is applied to an object is not equal to zero, then while the impulse is applied the object accelerates; the impulse causes a change in momentum of the object; and while the impulse is applied the object's velocity changes.

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Answer:

300cm^3

Explanation:

1ml = 1cm^3

=>300 ml = 300 cm^3

Answer:

The answer to the question is highlighted in the box

The magnitude of the potential difference needed to give an alpha particle 324.0 keV of kinetic energy is 2.50 x 10^6 kV.

The magnitude of the potential difference needed to give an alpha particle 324.0 keV of kinetic energy is calculated using the formula KE=1/2mv^2. Here, m is the mass of the alpha particle (6.644 x 10^-27 kg) and v is its velocity.

Thus, we have 324.0 keV = (1/2) (6.644 x 10^-27 kg)[v^2].

Solving for v, we get v = 1.38 x 10^7 m/s.

The potential difference, V, can then be calculated using the formula

V = (mv^2)/(2e)

where e is the charge of the alpha particle (charge of two protons, or 4.803 x 10^-10 C).

Thus, V = (6.644 x 10^-27 kg)(1.38 x 10^7 m/s)^2/(2(4.803 x 10^-10 C)) = 2.50 x 10^6 kV.

Therefore, the magnitude of the potential difference needed to give an alpha particle 324.0 keV of kinetic energy is 2.50 x 10^6 kV.

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Answer:

Kinetic Energy

Explanation:

Answer:

9 is the number of protons in the fluorine atom (atomic number)

Explanation:

Answer:

Atomic number

Explanation:

see this and you

try to understand

Kepler's third law of planetary motion helps you compare the velocities of different planets.

The orbits of planets around the Sun are described by Kepler's laws of planetary motion, which he published between 1609 and 1619.

The laws replaced the circular orbits and epicycles of Nicolaus Copernicus' heliocentric theory with elliptical trajectories and provided an explanation for the variation in planetary velocities. As per the three laws:

Hence, Kepler's third law of planetary motion helps you compare the velocities of different planets.

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To obtain the approximate short-circuit current values when two hot conductors of a 3-phase system are shorted together, use _maximum percent of the 3-phase current value.

short circuit- It is an electrical circuit in which current finds a way to bypass the appliances on a path that has little or no resistance.

In the 3- phase system, there are three power wires which carries load.

most common. Types of three phase system are known as wye and delta.

To obtain the approximate short-circuit current values when two hot conductors of a 3-phase system are shorted together, use _maximum percent of the 3-phase current value.

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The gravitational force is inversely proportional to the distance from the surface of earth. Thus, value of g will be lower at higher altitudes.

Gravitational force is a kind or force by which an object attracts other objects into its center of mass. It is dependent on the mass of the objects and distance between them.

According to the law of universal gravitation, the force of gravitation g is written as:

g = Gm/ r²

Here. m is the mass, G be the gravitational constant and r be the distance from the surface.

Thus, as per this equation g is inversely proportional to the square of the distance from earth's surface. Therefore, at higher altitudes, the gravity will be slightly lower,

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Electrons are released as a result of the photoelectric effect when electromagnetic radiation, such as light, strikes a metallic surface.

1) The elastic collision (conserves mechanical energy) between the photon of light and the metal's electron that occurs in the photoelectric effect is in accordance with a particle theory of light.

2) When a light with a specific frequency hits a metal's surface, electrons are emitted from the metal. This phenomenon is known as the photoelectric effect, and the ejected electrons are referred to as photoelectrons.

3) Diffraction causes light to bend and spread over the screen when it passes through a slit, creating a recognizable banded pattern. This phenomenon is known as interference of light. New dark regions emerge as light passes between two slits.

4) As a wave, light travels to the earth. It doesn't require any medium or material to convey its energy forward, unlike sound waves or water waves. This implies that light can go through a vacuum.

5) Energy comes in the form of light, which has two different characteristics. This indicates that light has both particle nature and wave nature.

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Answer:

\(\fbox {3.6kW}\)

Explanation:

Formula used :

\(\boxed {P = F \times v} \leftarrow \rightarrow \boxed {P = \frac{F \times S}{t}}\)

Given :

⇒ F = 6 × 10³ N

⇒ S = 18 m

⇒ t = 30 s

Solving :

⇒ P = 6 × 10³ × 18 / 30

⇒ P = 2 × 100 × 18

⇒ P = 3600 W

⇒ P = 3.6kW

Answer:

A

Explanation:

acceleration is defined as the rate of change of velocity with time

Answer:

exothermic reaction

Explanation:

Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.

The superposition principle and the Copenhagen interpretation do not actually contradict each other. The superposition principle states that a quantum particle can exist in multiple states at the same time until it is observed.

The Copenhagen interpretation, on the other hand, states that the act of observation collapses the wave function of the particle, forcing it to exist in only one state.

The two concepts can coexist because the superposition principle is a mathematical description of how particles behave, while the Copenhagen interpretation is a philosophical interpretation of why particles behave the way they do.

The superposition principle simply states that the particle is in multiple states, but the Copenhagen interpretation explains why this is the case. In other words, the superposition principle is a description of the how and the Copenhagen interpretation is a description of the why.

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The distance above the ground the rock  should be dropped such that it hits the ground at 2t after it is released from rest is 4h.

The height of fall of the rock is calculated by applying the following kinematic equation as shown below.

h = vt + ¹/₂gt²

where;

h = 0 + ¹/₂gt²

h = ¹/₂gt²

2h = gt²

g = 2h / t²

h₁ / t₁² = h₂ / t₂²

The distance above the ground the rock  should be dropped such that it hits the ground at 2t after it is released from rest is calculated as;

h₂ = ( h₁ / t₁² )(t₂²)

h₂ = ( h/t²)(2t)²

h₂ = ( h/t²)(4t²)

h₂ = 4h

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Answer:

0.699 L of the fluid will overflow

Explanation:

We know that the change in volume ΔV = V₀β(T₂ - T₁) where V₀ = volume of radiator = 21.1 L, β = coefficient of volume expansion of fluid = 400 × 10⁻⁶/°C

and T₁ = initial temperature of radiator = 12.2°C and T₂ = final temperature of radiator = 95.0°C

Substituting these values into the equation, we have

ΔV = V₀β(T₂ - T₁)

= 21.1 L × 400 × 10⁻⁶/°C × (95.0°C - 12.2°C)

= 21.1 L × 400 × 10⁻⁶/°C × 82.8°C = 698832 × 10⁻⁶ L

= 0.698832 L

≅ 0.699 L = 0.7 L to the nearest tenth litre

So, 0.699 L of the fluid will overflow