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23 Nov 2019

Describe four experiments in which EM radiation is exhibitingaparticle like nature and this particle like nature. Also usethecorrespondence principle to discuss how this particle likenatureappears to disappear(i.e becomes more wave like) when thefrequencyof the radiation gets smaller and smaller

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Casey Durgan
Casey DurganLv2
23 Jun 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Electromagnetic radiation is emitted when a charged particle movesthrough a medium faster than the local speed of light. Thisradiation is known as Cerenkov radiation. Cerenkov radiation isfound in many interesting places such as particle detectors andnuclear reactors and can even be seen by astronauts when cosmicrays traverse their eyes. It should be stressed that the particleis never going faster than the speed of light in vacuum (or c),just faster than the speed of light in the material (which isalways less than c). The creation of Cerenkov radiation occurs inmuch the same way that a sonic boom is created when a plane ismoving faster than the speed of sound in the air. The variouswavefronts that propagate in the material add coherently to createan effective shock wave. In this problem, you will become familiarwith this type of radiation and learn how to use its properties toget information about the particles that created it.
A)What is the threshold velocity v_threshold (water) (i.e., theminimum velocity) for creating Cerenkov light from a chargedparticle as it travels through water (which has an index ofrefraction of n=1.33)?
v_threshold (water) =c
B)What is the threshold velocity v_threshold (ethanol) for creatingCerenkov light from a charged particle as it travels throughethanol (which has an index of refraction of n=1.36)?
v_threshold (ethanol) =c
C)Which of the following best explains why neutrally chargedparticles can't give off Cerenkov radiation?

a)Neutral particles are too heavy to emit radiation.
b)Neutral particles don't interact with the electromagnetic fieldsof the medium.
c)Neutral particles can't move above the threshold velocity forCerenkov radiation.
d)Charged particles hit the nuclei of the material more often andthus create more radiation

 Please solve all of these equations  as early as possible. 

1 .

(a) The distance to a star ts approximately
  4.21 x 10^18 m. If this star were to burn out         today, in how many years would we see it

disappear?

(                            )years

(b) How long does it take sunlight to reach Earth?
(                           )minutes .

(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth

to the Moon is 3.84 x 10^5 km }
(                    )s.

2. Which of the following statements are true regarding electromagnetic waves traveling through a vacuum?
(Select all that apply }.
1.All waves have the same wavelength. 

2.All waves have the same frequency 

3.All waves travel at 3.00 x 10° m/s 

4. The electric and magnetic flelds associated with the waves are perpendicular to each other and to the direction of wave propagation .


5.The speed of the waves depends on their frequency. 


3.What are the wavelength ranges for the following? 

(a) the AM radio band (540-1600 kHz)

  1.maximum wavelength(              ) m.

  2.minimum wavelength (              ) m.

(b)  the FM radio band (88-108 Mhz) 

maximum wavelength  (                  )m.

minimum wavelength  (                   )m.

4. What are the wavelengths of electromagnetic wave in free space that have the following frequencies? 
(a) 2. 00 x 10^19 Hz 

      (                 )pm.

(b) 7.50 x 10^9 Hz 

    (                     )cm. 


5.A diathermy machine used In physiotherapy generates electromagnetic radiation that gives the effect of "deep heat” when absorbed In tissue One assigned frequency for diathermy ts 915. 00 MHz, What is the wavelength of this radiation?
 
linear mass density (                         )m.

 

to change the rate of their rotation with virtually constant angular acceleration. Many introductory problems in rotational kinematics involve the motion of a particle with constant, nonzero angular acceleration. The kinematic equations for such motion can be written as

\theta (t) = \theta_0 +\omega_0t + \frac{1}{2}\alpha t^2

and

\omega (t) = \omega_0 + \alpha t.

Here, the symbols are defined as follows:

  • theta(t) is the angular position of the particle at a time t.
  • theta_0 is the initial angular position of the particle.
  • omega(t) is the angular velocity of the particle at a time t.
  • omega_0 is the initial angular velocity of the particle.
  • alpha is the angular acceleration of the particle.
  • t is the time that has elapsed since the particle was located at its initial position.
In answering the following questions, assume that the angular acceleration is constant and nonzero: \alpha \neq 0.
 
A)
True or false: The quantity represented by theta is a function of time (i.e., is not constant).
 
  true
  false
   
B)
True or false: The quantity represented by theta_0 is a function of time (i.e., is not constant).
 
 
  true
  false
   
C)
True or false: The quantity represented by omega_0 is a function of time (i.e., is not constant).
 
 
  true
  false
   
D)
True or false: The quantity represented by omega is a function of time (i.e., is not constant).
 
 
  true
  false
   
E)
Which of the following equations is not an explicit function of time t? Keep in mind that an equation that is an explicit function of time involves t as a variable.
 
 
  \theta=\theta_0+\omega_0 t+\frac{1}{2}\alpha t^2
  \omega=\omega_0+\alpha t
  \omega^2=\omega_0^2+2\alpha(\theta-\theta_0)
   
F)
In the equation \omega=\omega_0+\alpha t, what does the time variable t represent?
Choose the answer that is always true. Several of the statements may be true in a particular problem, but only one is always true.
 
 
  the moment in time at which the angular velocity equals \omega_0
  the moment in time at which the angular velocity equals \omega
  the time elapsed from when the angular velocity equals \omega_0 until the angular velocity equals \omega
   
G)
Consider two particles A and B. The angular position of particle A, with constant angular acceleration, depends on time according to \theta_{\rm A}(t)=\theta_0+\omega_0t+\frac{_1}{^2}\alpha t^2. At time t=t_1, particle B, which also undergoes constant angular acceleration, has twice the angular acceleration, half the angular velocity, and the same angular position that particle A had at time t=0.
Which of the following equations describes the angular position of particle B?
 
  \theta_{\rm B}(t)=\theta_0+2\omega_0t+\frac{1}{4}\alpha t^2
  \theta_{\rm B}(t)=\theta_0+\frac{1}{2}\omega_0t+\alpha t^2
  \theta_{\rm B}(t)=\theta_0+2\omega_0(t-t_1) +\frac{1}{4}\alpha (t-t_1)^2
  \theta_{\rm B}(t)=\theta_0+\frac{1}{2}\omega_0(t-t_1)+\alpha (t-t_1)^2
  \theta_{\rm B}(t)=\theta_0+2\omega_0(t+t_1) +\frac{1}{4}\alpha (t+t_1)^2
  \theta_{\rm B}(t)=\theta_0+\frac{1}{2}\omega_0(t+t_1)+\alpha (t+t_1)^2
   
H)
How long after the time t_1 does the angular velocity of particle B equal that of particle A?
 
 
  \frac{\omega_0}{4\alpha}
  \frac{\omega_0+4\alpha t_1}{2\alpha}
  \frac{\omega_0+2\alpha t_1}{2\alpha}
  The two particles never have the same angular velocity.
   

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