Which model of the atom has electrons traveling in specific paths around the nucleus? Bohr's model Rutherford's model Thomson's model Dalton's model

Answers

Answer 1

Answer:

The model of the atom that has electrons traveling in specific paths around the nucleus is Rutherford's model.

Therefore, the correct answer is option B

J. J Thomson proposed that the atom is a sphere of positively charged matter in which negatively charged electron are embedded.

In Rutherford's model of atomic structure, the electrons moves in orbits by electrostatic attraction to the positively charged nucleus.

According to Dalton's atomic theory, atom were indestructible and indivisible solid particle.

Bohr's model made assumption that electron can only exist in circular orbits of definite quantum energy.

According to the question, the model of the atom that has electrons traveling in specific paths around the nucleus is Rutherford's model.

Therefore, the correct answer is option B

Learn more here : brainly.com/question/16776207

Answer 2

Answer:

Answer:

A, Bohr's model

Explanation:

Took the quiz, hope it's right for you.

(The other three did have something to do with it they just didn't create that specific model)

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What best describe a sound wave

Answers

A sound wave can also be described as a longitudinal wave. In a longitudinal wave, a source vibrates back and forth, causing air molecules to move back and forth in the same (in other words, parallel) direction that the wave is transmitted.

Final answer:

Sound can be best described as a mechanical wave and a disturbance in matter that is transmitted from its source outward. This disturbance can move in the form of periodic waves or longitudinal waves. The speed, frequency, and wavelength of a sound are interconnected and sound requires a medium to propagate.

Explanation:

Sound is best described as a mechanical wave, a type of disturbance in matter that is transmitted from its source outward. This movement can be in the form of periodic or longitudinal waves, implying that they move matter back and forth in the direction of the wave's motion. The speed of sound, its frequency, and its wavelength are interconnected, and this is described mathematically by the relationship v = fλ. This relationship shows that the velocity of sound (v) equates to the frequency (f) multiplied by the wavelength (λ).

Sound waves can be both audible and inaudible, originating from various sources, ranging from musical instruments to vocal voices to explosive bangs like a sonic boom. Also, to note is that sound is interpreted through our sense of hearing, and different frequencies and intensities create different sounds. Sound also has the ability to travel through different mediums, including solids, liquids, and gases, with varying speeds.

On a microscopic level, sound can be seen as synchronized oscillation of atoms. This type of motion is more organized than the thermal motion of the atoms. The behavior of sound waves is significantly different from light waves, as sound requires a medium to propagate, while light can travel in a vacuum.

Learn more about Sound Waves here:

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Slick Willy is in traffic court (again) contesting a $50.00 ticket for running a red light. "You see, your Honor, as I was approaching the light, it appeared yellow to me because of the Doppler effect. The red light from the traffic signal was shifted up in frequency because I was traveling towards it, just like the pitch of an approaching car rises as it approaches you." a. Calculate how fast Slick Willy must have been driving, in meters per second, to observe the red light (wavelength of 687 nm) as yellow (wavelength of 570 nm). (Treat the traffic light as stationary, and assume the Doppler shift formula for sound works for light as well.)

Answers

Answer:

$6.11*10^7m/s$

Explanation:

The Doppler effect formula for an observer approaching a source is given by equation (1);

$f_o=(f(v+v_o))/(v-v_s)...................(1)$

where $f_o$ is the frequency perceived by the observer, v is the actual velocity of the wave in air, $v_o$ is the velocity of the observer, $v_s$ is the velocity of the source and $f$ is the actual frequency of the wave.

The actual velocity v of light in air is $3*10^8m/s$ . The relationship between velocity, frequency and wavelength $\lambda$ is given by equation (2);

$v=\lambda f...........(2)$

therefore;

$f=(v)/(\lambda)...............(3)$

We therefore use equation (3) to find the actual frequency of light emitted and the frequency perceived by Slick Willy.

Actual wavelength $\lambda$ of light emitted is 678nm, hence actual frequency is

given by;

$f=(3*10^8)/(687*10^(-9))\nf=4.37*10^(14)Hz$

Also, the frequency perceived by Slick Willy is given thus;

$f_o=(3*10^8)/(570*10^(-9))\nf=5,26*10^(14)Hz$

The velocity $v_s$ of the source light is zero since the traffic light was stationary. Substituting all parameters into equation (1), we obtain the following;

$5.26*10^(14)=(4.37*10^(14)(3*10^(8)+v_o))/(3*10^8-0)$

We then simplify further to get $v_o$

$10^(14)$ cancels out from both sides, so we obtain the following;

$5.26*3*10^8=4.37(3*10^8+v_o)$

$15.78*10^8=13.11*10^8+4.37v_o\n4.37v_o=15.78*10^8-13.11*10^8\n4.37v_o=2.67*10^8$

Hence;

$v_o=(2.67*10^8)/(4.37)\nv_o=6.11*10^7m/s$

Answer:

61578948 m/s

Explanation:

λ $_(actual)$ = λ $_(observed)$ $(c+v_(o))/(c)$

687 = 570 $((3 * 10^(8) +v_(o) )/(3 * 10^(8)) )$

$v_(o)$ = 61578948 m/s

So Slick Willy was travelling at a speed of 61578948 m/s to observe this.

What is not needed for a charge to flow through a conducting wire?A. an electrical insulator

B. a wire connected in a complete loop

C. a source of electrical energy

Answers

Answer: The correct answer is an electrical insulator.

Explanation:

Insulator : It is a material which resists the flow of electrons. It has high resistance in comparison to the conductor.

Conductor: It is a material which allows the flow of electrons. It has low resistance in comparison to the conductor.

Battery is a source of electrical energy. It forces the electrons to flow. The rate of flow of electrons constitutes the current.

In the given problem, an electrical insulator is not needed for a charge to flow through a conducting wire.

To design the circuit and to make a current flow in the circuit, a battery, a wire connected in a complete loop and a source of electrical energy are needed.

Therefore, the correct option is (C).

An electrical insulator would not be needed for a charge to flow through a conducting wire.

Answer: Letter A

Hope that helps! -UF aka Nadia

(Coulomb's Law) can anyone tell me if there is any cases in which the electrostatic force between 2 objects is 0?

Answers

Well, just look at Coulomb's law, set it equal to zero, and then
see what it would take to make the equation true.

Electrostatic force =
(a constant number) x (charge#1) x (charge#2) / (distance between them)² = 0

There you have an equation, with some stuff on the left side that's all equal to zero.

The stuff is all in the form of one fraction. In order for the fraction to be zero,
either the numerator is zero, or else the denominator is infinite.

So ?

The force is zero if ...

-- at least one of the charges is zero, OR

-- the charges are an infinite distance apart.

If you can arrange for either of those conditions, then you'll have zero force.

Eletrostatic force between only two charges never is null. But if there are interactions with 3 or more charges is possible between two of them be null.

A book is given a sudden push to make it slide along a desktop. If the initial speed of the slide is doubled, by what factor is the distance that the book slides changed? A 20 kg cart is moving at 2.0 m/s when a 5.0 N force is applied for a distance of 6.0 m in the direction the car is moving. What is the kinetic energy of the cart at the end of the 6.0 m?

A 0.145 kg baseball is thrown from a platform above the ground at a 10 m/s. The ball is moving 15 m/s when it strikes the ground. From what height above the ground was the ball thrown?

Answers

Well let see, we don't have any information about the initial distance we have to use our logic

assuming that the distance moves from 1 to 2 m with initial speed , it means that the distance factor is 2

Since the initial speed has doubled, it would be very likely that the factor of the distance is MORE THAN 2 . Find the answer that either got 3 or 4 distance factor

hope this helps

An object will float in water if it weighs __________.a) less than the amount of water it displaces

b) more than the amount of water it displaces

c) less than a gram

d) more than a gram

Answers

An object will float in water if it weights less than the amount of water it displaces.

Answer: a) less than the amount of water it displaces.

I think the answer would be A. less than the amount of water it displaces.

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