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Two stereo speakers mounted 4.52 m apart on a wall emit identical sound waves. You are standing at the opposite wall of the room at a point directly among the two speakers. You walk 2.11 m parallel to the wall to a location where you first notice that the sound intensity is much less. If the wall along which you are walking is 13.3 m from the wall with the speakers, what is the wavelength of the sound waves? (Answer: 1.4 m) can someone describe the process and formulas?
suppose a satellite is in a circular orbit 3.600 earth radii above the surface of the earth 4.600 earth radii from the
A spring is hung from the ceiling. A 0.400-kg block is then attached to the free end of the spring. When released from rest, the block drops 0.130 m before momentarily coming to rest, after which it moves back upward.
A charged particle is injected at 121 m/s into a 0.0743-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
A cylindrical resistor of radius 4.9 mm and length 1.9 cm is made of material that has a resistivity of3.50×10-5 Ω m. What is the current density when the energy dissipation rate in the resistor is 1.0 W? What is the potential dissimilarity?
Your physics TA has a far point of 0.711 m from her eyes and is able to see distant objects in focus when wearing glasses with a refractive power of ?1.47 D. Determine the distance between her glasses and eyes
The left side of the figure shows a light (`massless') spring oflength 0.350 m in its relaxed position. It is compressed to 74.0percent of its relaxed length, and a mass M= 0.110 kg is placed ontop and released from rest.
A mine elevator is supported by a 2.2 cm diameter steel cable (Ultimate Strength = 600 MN/m2). The mass of the elevator and its contents is 800 kg. The modulus of elasticity of the cable is 570x103 MN/m2.
The rms current in a copy machine is 3.00 A, and the resistance of the machine is14.6 Ω. What is the average power?
Explain in detail how you can create an image by using a concave mirror. Give the three important rays which can be used to from the image.
One tire is inflated to a pressure of 40 and goes a distance of 18.0 ; the other is at 105 and goes a distance of 93.4. Assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be = 9.80.
A 15-mF capacitor and a 30-mF capacitor are connected in series, and charged to a potential difference of 50 Volt. Determine the resulting charge on the 30-mF capacitor
A charged particle A exerts a force of 2.69 ?N to the right on charged particle B, when the particles are 14.0 mm apart. Particle B moves straight away from A to make the distance between them 17.0 mm. What vector force does it then exert on A?
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