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A bat can detect small objects, such as an insect, whose sizeis approximately equal to one wavelength of the sound the batmakes. If bats emit a chirp at a frequency of 55.0 kHz, and if the speed of sound in air is 340m/s, what is the smallest insect a bat can detect?
mm
Calculate the work done, the amount of heat absorbed, and the change in internal energy during: melting of 1 gram of ice to water at a temperature of O degrees C under a constant pressure of 1 atmosphere. evaporation of 1 gram of water to water vapor..
A hydrogen atom in the ground state absorbs a 13.06eV photon. find the wavelength of the photon emitted in this quantum jump
A pronghorn antelope has been observed to cover 1.60 km with an average speed of 67.0 km/h. The antelopes speed during the first half of the distance is 88.0km/h. find the antelopes speed during the second half of its run
rotates to provide an "artificial gravity" of 3.10 m/s2 for persons who walk around on the inner wall of the outer rim. Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
The cable lifting an elevator is wrapped around a 1.0--diameter cylinder that is turned by the elevator's motor. How long does it take for the elevator to stop
A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. What is the refractive index of the film
A container of 1m^3 contains one cubic meter of liquid water at a temperature of 0 degrees Celsius. calculate heat current in radiation leaving the cube
If the first-order maximum for pure wavelength light falling on a double slit is at an angle of 10.0 degrees, at what angle is the second-order maximum, What is the angle of the first minimum
A speaker with acoustic power 80 mW produces a steady tone. Consider the speaker as a point source and take the speed of sound to be 340 m/s.
The position of a particle is given by x = 4.4 cos pt, where x is in meters and t is in seconds. Find the speed and acceleration of the particle when x = 2.3 m
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
Astronomers have recently discovered a new planet in a faraway solar system, with a radius of roughly 380 km. calculate the minimum density of the planet
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