A camera with a 50.0 mm lens is designed to focus from 1.00 m to infinity. What is the distance of travel of the lens with respect to the film plane over this range of focus?
A. 50.0 mm
B. 52.6 mm
C. 47.4 mm
D. 5.30 mm
E. 2.60 mm
E. 2.60 mm
You might also like to view...
Magnetic Field of a Long Wire: A wire lying in the plane of the page carries a current toward the bottom of the page, as shown in the figure. What is the direction of the magnetic force it produces on an electron that is moving to the left directly toward the wire, as shown?
A. straight into the page B. straight out of the page C. directly toward the top of the page D. directly toward the bottom of the page E. directly to the left away from the wire
A proton is projected with a velocity of 7.0 km/s into a magnetic field of 0.60 T perpendicular to the motion of the proton. What is the magnitude of the magnetic force that acts on the proton? (e = 1.60 × 10-19 C)
A) 13 × 10-16 N B) 6.7 × 10-16 N C) 0 N D) 3.4 × 10-16 N E) 4.2 × 10-16 N
If two atoms have equal electronegativity, a bond formed between them is generally
a. ionic. b. nonpolar. c. very weak. d. polar.
The half-life of uranium-232 is 70 years. The time for 3/4 of a sample of uranium-232 to decay is 105 years
a. True b. False Indicate whether the statement is true or false