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A bat flies toward a moth at speed 8.15 m/s while the moth isflying toward the bat at speed 5.06 m/s. The bat emits a sound waveof 51.9 kHz. What is the frequency of the wave detected by the batafter it reflects off the moth?
In the lungs there are tiny sacs of air that are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140mm. What is the minimum improbability in the velocity of this oxygen ..
When you walk past an open door of a room in your house in which a person is speaking, you can hear the person long before you can see him. Why? What does this tell you about the wavelengths of light and sound?
Calculate the center of mass of a system of a system of 1 kg weights located at the following positions: (1,4),(-1,4),(-1,-4),(1,-4),(1,5),(1,7)
A child goes down a playground slide with an acceleration of 1.40. Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 31.0 below the horizontal.
The objective of a refracting astronomical telescope has a focal length of 3.60 m. What is the angular magnification of the telescope
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
q1. a car takes 9 s to go from v 0 to v 55 ms at about constant acceleration. if you wish to find out the distance
A cockroach of mass m lies on the rim of a uniform disk of mass 4m that can rotate freely about its center like a merry-go-round. compute the angular velocity of the cockroach-disk system
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
An object is accelerated by a force. If the acceleration increases by a factor 2 and the mass increases by a factor 3, by what factor was the force increased? The answer must be exact.
A 3.11 kg object initially moving in the positive x-direction with a velocity of +5.30 m/s collides with, Find the final components of velocity of the composite object
A critically damped simple harmonic oscillator starts at the origin at rest, and is subject to an additional force Fext = Fto/t. Find the subsequent motion
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