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A pair of speakers seperated by .7m are driven by the same oscillator at a frequency of 690 Hz. An observer, originally positioned at one of the speakers, begins to walk along a line perpendicular to the line joining the two speakers.
(a) How far must the observer walk before reaching relative maximum intensity
(b) How far will the observer be from the speaker when the first relative minimum is detected in the intensity?
A train is traveling with a speed of 16.0 m/s relative to Earth. What is the velocity of the baseball relative to Earth
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
a force of 500 N is requited to hold a spring in the state where it is compressed 0.1 m from its relaxed length. how much work was done to compress the spring
A 2.1-m-tall, 90-cm-diameter concrete column supports a 4.0×10^5kg load. By how much is the column compressed
a motorcycle is following a car that is traveling at constant speed on a straight highway. initially the car and the
Three wires are arranged parallel to each other. Wire 1 sits at x = -2.5m with a current I1 = 3.0A directed into the page, Determine the location of wire 3 and the direction of the current such that the net magnetic force acting on wire 3 is zero
A grating has 350 rulings/mm and is illuminated at normal incidence by white light. A spectrum is formed on a screen 30cm from the grating. what range of wavelength passes throught the hole
A welder using a tank of volume 7.90×10?2m3 fills it with oxygen at a gauge pressure of 3.00×105Pa and temperature of 38.8?C, Initial mass of oxygen is 0.391 kg, Find the mass of oxygen that leaked out
Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200W/(m dot K) ] surrounded by a layer of air trapped inside fur or down. We can model a black bear (Ursus americanus) as a sphere 1...
a string is tied between two walls 8 m apart. which of the following is not an allowed standing wavelength for this
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
in a single slit experiment, the distance between two dark fringes of the second order is 10 cm on a screen which is 1.5 m away. find the width of the slit
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