A camera lens has a focal length of 50.0 mm and an aperture setting of f/4.00. What is the aperture diameter of this lens?
A) 14.2 mm B) 13.6 mm C) 10.1 mm D) 12.5 mm E) 15.0 mm
D
Physics & Space Science
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As yet, no human probe has completely left our solar system and gone into interstellar space
Indicate whether the statement is true or false
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A charge of 12 C passes through an electroplating apparatus in 2.0 min. What is the average current through the apparatus?
A) 0.10 A B) 0.60 A C) 1.0 A D) 6.0 A
Physics & Space Science
According to the Hubble law, where H = 17 km/s/106 lightyears, what is the velocity of recession of a quasar at a distance of 2 billion lightyears from Earth?
a. 0.75 c b. 0.33 c c. 0.55 c d. 0.11 c e. 0.93 c
Physics & Space Science
A material's capacity to transmit fluids is called its
a. permeability. b. solifluction. c. drift. d. porosity.
Physics & Space Science