The image viewed in a telescope is a magnified virtual image. To achieve this, a telescope must have
A. a negative eyepiece lens with a large focal length.
B. a positive eyepiece lens with a small focal length.
C. a negative objective lens with a large focal length.
D. a positive objective lens with a small focal length.
Answer: B
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Determine this shape factor F1–2 for the geometrical configuration shown
GIVEN
The geometrical configuration shown above
FIND
The shape factor F1–2
The Perseid meteor shower occurs each year in _____
A) May B) June C) July D) August
A titanium bar (E 5 100 GPa, ? 5 0.33) with square cross section (b 5 75 mm) and length L 5 3.0 m is subjected to tensile load P 5 900 kN. The increase in volume of the bar is approximately:
(A) 1400 mm3
(B) 3500 mm3
(C) 4800 mm3
(D) 9200 mm3
A 4.00-kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position
The spring constant of the spring is 1.00 N/cm. The mass is pulled downward 2.00 cm and released. What is the speed of the mass when it is 1.00 cm above the point from which it was released? A) 0.0443 m/s B) 0.0744 m/s C) 0.0201 m/s D) 0.0866 m/s E) The mass will not reach the height specified.