Simple Harmonic Motion: A sewing machine needle moves in simple harmonic motion with a frequency of 2.5 Hz and an amplitude of 1.27 cm.(a) How long does it take the tip of the needle to move from the highest point to the lowest point in its travel?(b) How long does it take the needle tip to travel a total distance of 11.43 cm?
What will be an ideal response?
(a) 0.20 s (b) 0.90 s
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A neutron in a nuclear reactor makes an elastic head-on collision with a carbon atom initially at rest. (The mass of the carbon atom is 12 times that of the neutron.) What fraction of the neutron's kinetic energy is transferred to the carbon atom?
a. 14.4% b. 28.4% c. 41.4% d. 56.6%
A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the diameter of the lens (in mm)?
a. 10 b. 31 c. 0.50 d. 20 e. 50
Webpages that display dynamically generated content typically acquire the information from a database.
Answer the following statement true (T) or false (F)
You note that a particular star is directly overhead. It will be directly overhead again in
A) 1 hour. B) 12 hours. C) 23 hours 56 minutes. D) 24 hours. E) 24 hours 4 minutes.