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A bird-watcher is hoping to add the white-throated sparrow to her "life list" of species. Person, only 1.00 m from the bird, hears the sound with an intensity of 1.08 x 10-5W/m2.
How far could she be from the bird and still be able to hear it? Assume no reflections or absorption of the sparrow's sound.
A compact disk spins with angular velocity 44.7rad/s . The player is turned off, and 2.50s later the CD has stopped. Find its average angular velocity
A farsighted person can read printing as close as 25.0 cm when she wears contacts that have a focal length of 44.6 cm. What is the maximum angular magnification that the magnifying glass can provide for her
A 2200 kg truck has put its front bumper against the rear bumper of a 2300 kg SUV to give it a push. what is the force of the SUV's bumper on the truck's bumper
What is meant by the terms: (i) normal mode and (ii) phonon. Explain why phonons obey Planck-Bose/Einstein statistics. What is the difference between an acoustic mode, and optic mode?
Two friends enter the Boston marathon. The first friend runs at a constant speed of 0.500 m/s. The second friend holds a speed of 1.00 m/s. how many hours would he be waiting once he stops
You wrap a single layer of copper wire (diameter .812mm) around a tube (diameter 4cm length 28cm) to create an air filled solenoid. how many turns are there per centimeter
A car is going around a corner with a radius of 68 m. At one instant, its speed is 19 m/s and its speed is increasing at a rate of 3.2 m/s^2. What is the total linear acceleration of the car
a hare and a tortoise compete in a race over a straight course 1.25 km long. the tortoise crawls at a speed of 0.300 ms
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. A charge of -4.9×10-6 C is placed at the center of the cube. What is the magnitude of the force on the charge at the center of the cube?
An object with a mass of 48.0 g displaces 605.0 ml of water when it is completely immersed. What is the buoyant force on the mass
A uniform plate of height 1.170 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y = 1.600 x2. Find the moment of inertia of the plate about the y-axis
You have been visiting a distant planet. Your measurements have determined that the planet's mass is four times that of earth but the free-fall acceleration at the surface is only one-fourth as large
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