A proton with initial wavelength the same as compton wavelength scatters off an electron( initially at rest) and bounces back. find the final energy, kinetic energy, and recoil speed.
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A particle of charge +9.6 μC is released from rest at the point x = 61 cm on an x axis. The particle begins to move due to the presence of a charge Q that remains fixed at the origin. What is the kinetic energy of the particle at the instant it has moved 21 cm if (a)Q = +66 μC and (b)Q = –66 μC?
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A circuit consists of an 92- resistor in series with a 5.9-?F capacitor, the two being connected between the terminals of an ac generator. The voltage of the generator is fixed. At what frequency is the current in the circuit one-half the value that exists when the frequency is very large? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise
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4.
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A microscope has a 12.0 ×× eyepiece and a 63.0 ×× objective lens 18.0 cmcm apart. Assume a normal eye and that the final image is at infinity. |
Part B
Calculate the focal length of the eyepiece lens.
Express your answer to two significant figures and include the appropriate units.
Part C
Calculate the focal length of the objective lens.
Express your answer to three significant figures and include the appropriate units.
Part D
Where the object must be for a normal relaxed eye to see it in focus?
Express your answer to three significant figures and include the appropriate units.
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A metal sphere contains zero net charge.
a. Explain why it is incorrect to say that the ball has no charge.
b. Is it possible for the ball to have a positive (or negative) charge on one side yet still have zero net charge? If so, describe how this could be done.
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A pirate uses a thin lens with f=10cm to image his parrot:
a) if the parrot is 6cm from his lens describe the image the pirate sees and its magnification. Draw a ray diagram.
b) if the parrot moves to 18cm from the lens, determine the image distance, transverse magnification, and describe the image. Draw a ray diagram.
c) if the parrot's beak is 1cm long, what is the longitudinal magnification observed if the imaging conditions are those described in part b? Assume the beak is pointing straight at the lens.
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To construct an oscillating LC system, you can choose from a 9.7 mH inductor, a 4.7 μF capacitor, and a 2.3 μF capacitor. What are the (a) smallest, (b) second smallest, (c) second largest, and (d) largest oscillation frequency that can be set up by these elements in various combinations?
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In 1942, Nikola Tesla, a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, said: "If you want to find the secrets of the universe, think in terms of energy, frequency and vibration."
Your reflection should be based on your knowledge of waves that you have gained in this module in relation to this quote; the reflection should be scientific in nature and not purely philosophical. Your initial post should be between 150 and 200 words in length.
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1. A block of mass m attached to a spring with spring constant k oscillates horizontally on a frictionless table. Its velocity is 20 cm/s when x = -5 cm. Taking m = 100 gm, and spring constant = 2.5 N/m,
a) Find out the equations of position, velocity, and acceleration of the ball. Find also the total energy of the block when its velocity was 20 cm/s.
b) Oscillating particles generate waves. What will be the equation of a wave generated by an oscillation from part (a), that is travelling with a speed of 5 m/s with a frequency of 100 Hz? The wave has 2.0 cm between the top of the crests and the bottom of the troughs. Is the wave making an audible sound?
c) If the wave in part b) was travelling through a 2 m long string held at a tension of 10 N, what would be the mass of the string?
d) If the set-up of part a), i.e., the source of the wave moves away with a speed 20 m/s, what will be the frequency of the wave generated?
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The motion of a particle is given by x = A sin3(ωt).
(a) Enter an expression for the amplitude of the particle's motion.
(b) Enter an expression for the particle's velocity, v.
(c) Enter an expression for the particle's acceleration, a.
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a) What is the equation of motion that governs the physics behind sound production in your speaker? Discuss what each term in this equation of motion relates to in your speaker.
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In a high jump competition: What would be the maximum height an athlete could jump using a pole? Find out what the world record is and compare with its result. Does your reasoning allow you to understand why a good pole vaulter has to be a very fast runner? Can your method be applied to estimate maximum height in a pole vault high jump competition? Why can you jump higher with the pole than without it? The figure shows the jump by the time the athlete reaches maximum height and is passing over the bar.
* The figure is not available
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5. An electron moves to the right, entering a region that has a uniform electric field directed at you. The direction of the force perceived by the electron is:
a. down
b. up
c. on the right
d. towards you
e. None of the above
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