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Two point-source loudspeakers are a certain distance apart, and a person stands 12.0 m in front of one of them on a line perpendicular to the baseline of the speakers. If the speakers emit identical 1000.0-Hz tones, what is their minimum nonzero separation so that the observer hears little or no sound? (Take the speed to be exactly 340 m/s.)
The magnitude of a force vector is 80.4 newtons (N). The x component of this vector is directed along the +x axis and has a magnitude of 72.6 N.
target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024 atoms per cm3 in the target, and the total cross-section at the energy of the beam is 4.5 b. What is the macroscopic total cross-section
A sailboat on the ocean has a mast of height 18.5 m. When viewed through a pair of binoculars the mast has an angular size of 0.065 rad. what is the distance between the observer and the sailboat
Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall on her way down. How long has your friend been in the air when she emits the yell whose frequency shift you hear
The component prisms are 70-20-90 degrees. the angle between the emerging right and left polarized rays
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 1.6 x 10-7 C/m2, and the plates are separated by a distance of 1.3 x 10-2 m. How fast is the electron moving just befor..
Stan accelerates from a standing start at 2 m/s^2 and one second later Kathy accelerates from a standing start at the same position at 4 m/s^2. how long does it take Kathy to catch Stan
A circular wire loop of radius is 16.0 cm carries a current of 2.80 A. What is the magnitude of the torque acting on the loop
A car of mass 1200 kg turns a corner inclined at 55 deg at a speed of 20 m/s. What is the maximum radius for the curve at which the car will not slide down the incline
A 8.26 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.362, what is the magnitude of the external force acting on the crate
A 76 kg student traveling in a car with a constant velocity has a kinetic energy of 1.1 multiply.gif 104 J. What is the speedometer reading of the car in km/h
q1. a woman rides a carnival ferris wheel at radius 13 m completing 4.0 turns about its horizontal axis every minute.
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