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An airplane traveling at v = 180 m/s emits a sound of frequency 5.70 kHz. At what frequency does a stationary listener hear the sound during each of the following times? (Use 344 m/s as the speed of sound.)
Use the uncertainty principle to obtain the uncertainty in the momentum of a particle of mass, m, confined to a cube of side a. What happens to the pressure exerted by particles as they are compressed to small volumes? Please explain.
For how long should Matt expose a second plate located 5.8m from the source if the second plate is to have equal exposure (that is, the same energy collected)?
(a) the projected area over which the planet absorbs light from Gliese 581 and (b)the radiating area of the planet. (c) If an average temperature of 287K is necessary for life to exist on Gliese 581c, what should the radius of the planet's orbit b
If the zero level of the Meriam blue manometer fluid is 0.2 m below the connection, determine the deflection l after the manometer is connected and all air has been removed from the connecting leg.
What would be the force on a charge of +14 microC placed at this spot?
Find the direction of the average force on the ball. (in degrees from the initial direction of motion of the ball)
Determine its flow speed through the needle, v2. Assume that the pressure in the needle remains at p2= 1.0 atm and that the syringe is held horizontal. The final speed of the water in the barrel is negligible.
Each of two small spheres is positively charged; the combined charge totals 60.0 nC. What is the charge on each sphere if the spheres are repelled with a force of magnitude 0.270 mN when placed 0.100m apart?
The half-life of a radioactive substance has been defined as "the time it takes for half of a given number of radioactive nuclei to decay". Given this definition, why won't a radioactive substance decay completely away within two half-lives? Expla
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