Consider a magnifying glass with a power of 3.0 diopters
(a) What is the maximum angular magnification for a person with a near point at 25 cm?
(b) What is the angular magnification when viewing with a relaxed eye?
What will be an ideal response?
(a) 1.75 (b) 0.75
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The balance between electrical and nuclear strong forces is more tenuous in
A) light elements. B) middle size elements like iron. C) heavier elements. D) all of the above E) none of the above
A negative muon decays to form an electron and a mu neutrino and one additional particle. The other particle must be a(n)
a. positron. b. antineutrino. c. neutrino. d. photon.
What is the result of the calculation (0.410 + 0.021 ) × (2.20 × 103)?
A) 880 B) 946 C) 948 D) 950
A man pushes against a rigid, immovable wall. Which of the following is the most accurate statement concerning this situation?
A) The man can never exert a force on the wall which exceeds his weight. B) If the man pushes on the wall with a force of 200 N, we can be sure that the wall is pushing back with a force of exactly 200 N on him. C) Since the wall cannot move, it cannot exert any force on the man. D) The man cannot be in equilibrium since he is exerting a net force on the wall. E) The friction force on the man's feet is directed to the left.