A 1.5-m tall woman stands 5.0 m in front of a camera with a 8.0 cm focal length lens. What is the size of the image formed on film?
a. 2.4 cm
c. 1.9 cm
b. 0.60 cm
d. 1.2 cm
A
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A parallel plate of area 400 cm2 is dragged over a 0.20 cm thick layer of oil at a speed of 30.0 cm/s. It takes a force 1.20 N applied to the plate to sustain this speed. What is the viscosity of the oil?
A) 6.00 kg/(m?s) B) 20.0 kg/(m?s) C) 60.0 kg/(m?s) D) 0.200 kg/(m?s) E) 200 kg/(m?s)
What was the Shoemaker-Levy 9 impact?
A) the 1994 impact of a chain of comet fragments into Jupiter B) the impact thought to have wiped out the dinosaurs C) the impact that created the Moon's largest crater D) the ninth impact witnessed by astronomers in modern times
The loudness of a sound is related to the amplitude squared of the wave
Indicate whether the statement is true or false
An electron is confined in a harmonic oscillator potential well. A photon is emitted when the electron undergoes a 3?1 quantum jump
What is the wavelength of the emission if the net force on the electron behaves as though it has a spring constant of 9.6 N/m? (mel = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 290 nm B) 150 nm C) 190 nm D) 580 nm