A string with a mass per length of 2.00 gm/m is stretched with a force of 150 N between two points that are 0.500 m apart. The fundamental frequency of the stretched string is in tune with the fundamental frequency of an organ pipe filled with air and open at both ends. The velocity of sound in air at 0
is 331 m/s. What is the length of the organ pipe?
A. 50.2 cm
B. 55.2 cm
C. 57.5 cm
D. 60.4 cm
E. 65.3 cm
D. 60.4 cm
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Strange as it may seem, it is just as difficult to accelerate a car on a level surface on the Moon as it is here on Earth because
A) the mass of the car is independent of gravity. B) the weight of the car is independent of gravity. C) both of these D) neither of these
A habitable zone
A) exists around all stars B) only exists around stars which are identical to the Sun C) only exists around stars which are similar to our Sun D) only exists around one star, the Sun
In one experiment, a photon entered one detector and that detector then indicated the slit through which a second photon passed in a double-slit experiment that was some distance away from the first detector. This experiment shows that
A) macroscopic detectors always exert actual forces on microscopic particles, even at a distance. B) it is possible for a detector to obtain complete information about a particle's simultaneous position and velocity, without causing a sudden change in the EM field. C) whenever a detector exerts an actual force on a particle, it causes the particles EM field to suddenly change. D) microscopic events are subject to Heisenberg's uncertainty principle whenever detectors are involved. E) macroscopic detectors can have non-local effects even on objects that they do not directly interact with.
Consider a uniform hoop of radius R and mass M rolling without slipping. Which is larger, its translational kinetic energy or its rotational kinetic energy?
A) Translational kinetic energy is larger. B) Rotational kinetic energy is larger. C) Both are equal. D) You need to know the speed of the hoop to tell.