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A whistle of frequency 500 Hz moves in a circle of radius 1 m at3 rev/s. What are the maximum and minimum frequencies heard by astationary listener in the plane of the circle and 5 m from itscenter?
How many half-lives are required for the number of radioactive nuclei to decrease to 1/1010 of the initial number
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.75 × 106 V, what are the radius of its circular path
Infrared photons cause a particular piece of metal to emit photoelectrons. Would photoelectrons be emitted when the metal is illuminated by visible light?
A 1020kg artillery shell is fired from a battleship. While it is in the barrel of the gun, it experiences an acceleration of 2.1x10^4m/s^2. what net force is exterted on the artillery shell before it leaves the barrel of the gun
A person pulls a toboggan for a distance of 40m along the snow with a rope directed 25 degrees above the snow. The tension in the rope is 83N.
A 5.5 %u03BCC point charge is placed in an external uniform electric field that has a magnitude of 68000 N/C
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
When people sleep, their metabolic rate is about 2.6 x10-4 C/(s.kg). How numerous Calories does a 69 kg person metabolize while sleeping 9 hours.
A monkey shows symptoms of being under the influence of too much physics. Specifically, What is the final angular speed of the monkey's head
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
The density of a sample of air is 1.205 kg/m3, and the bulk modulus is 1.42 105 N/m2, Find the temperature of the air sample
a typical sedan ( like corolla Toyota) has unloaded mass of 1.2x10^3 kg. Determine the effective spring constant "k" for the suspension system for critical damping
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