A 3.0-kg object and a 5.0-kg object hang vertically at the opposite ends of a rope that goes over an ideal pulley. If the objects are gently released from rest, how long does it take for the 3.0-kg objects to rise by 1.0 m?
A) 0.41 s
B) 0.74 s
C) 0.82 s
D) 1.8 s
E) 0.90 s
E
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John and Linda are arguing about the definition of density. John says the density of an object is proportional to its mass. Linda says the object's mass is proportional to its density and to its volume. Which one, if either, is correct?
A. They are both wrong. B. John is correct, but Linda is wrong. C. John is wrong, but Linda is correct. D. They are both correct. E. They are free to redefine density as they wish.
An earthquake emits both S waves and P waves which travel at different speeds through the Earth. A P wave travels at 9 000 m/s and an S wave travels at 5000 m/s. If P waves are received at a seismic station 1.00 minute before an S wave arrives, how far away is the earthquake center?
a. 88.9 km b. 1200 km c. 675 km d. 240 km e. 480 km
A beam of light of wavelength 610 nm passes through a slit that is 1.90 µm wide. At what the angle away from the centerline does the first dark fringe occur?
A) 39.9° B) 18.7° C) 11.4° D) 12.2° E) 9.35°
Single-Slit Diffraction: Light of wavelength 580 nm is incident on a slit of width 0.30 mm. An observing screen is placed 2.0 m past the slit. Find the distance on the screen of the first order dark fringe from the center of the pattern.
A. 0.26 mm B. 1.5 mm C. 1.9 mm D. 3.9 mm E. 7.7 mm