A farsighted girl has a near point at 2.0 m but has forgotten her glasses at home. The girl borrows eyeglasses that have a power of +2.75 diopters
With these eyeglasses, what is the near point of the girl, assuming that she wears them extremely close to her eyes? A) 28 cm
B) 31 cm
C) 33 cm
D) 37 cm
E) 40 cm
B
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Two objects in orbit around each other orbit their common center of mass
a. True b. False Indicate whether the statement is true or false
When a bar magnet is thrust into a coil of wire, a greater voltage is induced with
A) a greater number of loops in the coil. B) faster thrusting motion. C) a stronger bar magnet. D) all of the above
A spin-1/2 particle that does not interact via the strong interaction is a(n)
a. lepton b. baryon c. meson d. intermediate (or gauge) boson e. hadron
An electron is in an infinite square well that is 2.6 nm wide. What is the smallest value of the state quantum number n for which the energy level exceeds 100 eV? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19)
A) 43 B) 44 C) 45 D) 42 E) 41