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Male Rana catesbeiana bullfrogs are known for their loud mating call. The call is emitted not by the frog's mouth but by its eardrums, which lie on the surface of the head. And, surprisingly, the sound has nothing to do with the frog's inflated throat. If the emitted sound has a frequency of 275 Hz and a sound level of 87.0 dB (near the eardrum), what is the amplitude of the eardrum's oscillation (in ?m)? The air density is 1.21 kg/m3 and the speed of sound is 346 m/s.
A small mass is stuck to a point on the rim of a rolling wheel(radius of r) .. which traces out a path called a cycloid. The position vector of this point is given by r(theta)= r(theta - sin theta)i +r(1-cos theta)j. For a wheel rolling with constant..
A spaceship of mass 2.30×106kg is cruising at a speed of 5.30×106m/s when the antimatter reactor fails, What is the speed of the third piece
A sample of a particular isotope registers 160 counts per minute. Eight hours later, the detector registers a rate of 10 counts per minute. What is the half-life of the material
Question: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ?
A certain bivalent metal has a density of 6.458 g/cm3 and a molar mass of 92.8 g/mol. Calculate the number density of conduction electrons
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
A uniform magnetic field in a region of space changes at a rate of 5.000e-3 T/s. What is the strength of the induced electric field on a circle
A 121-kg horizontal platform is a uniform disk of radius 1.63 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system
A uniform solid disk of mass m = 3.01 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 5.96 rad/s. Calculate the magnitude of the angular momentum of the disk
A cylindrical capacitor has an inner conductor with a radius of 1.2 and an outer conductor with a radius of 3.9 . The two conductors are separated by vacuum, and the entire capacitor has a length of 2.4 .
When his mom asked him why he is smoking he told her, "Don't worry mom, it is not that bad after all." Which term is being described in Trent's situation.
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface
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