A microscope has an objective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far apart are the lenses?
A) 20 mm
B) 21 mm
C) 23 mm
D) 33 mm
E) 41 mm
Question 2The fastest we could accelerate a vehicle powered with an ion engine to is approximately
A) 1 of the speed of light
B) 0.001 of the speed of light
C) 0.1 of the speed of light
D) 10 of the speed of light
Question 3Consider a bus designed to obtain its motive power from a large rotating flywheel (1400. kg of diameter 1.5 m) that is periodically brought up to its maximum speed of 3600. rpm by an electric motor at the terminal.
If the bus requires an average power of 12. kilowatts, how long will it operate between recharges?
Question 4An electron slowing from 0.998c to 0.500c loses how much momentum? (express the answer in MeV/c as well as N-s)
What will be an ideal response?
Question 5Consider an oil film (n = 1.50 ) on water (n = 1.33 ) and 600. nm incident light. The minimum film thickness for constructive interference is
A) 100. nm.
B) 200. nm.
C) 113 nm.
D) 50.0 nm.
E) 150. nm.
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