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In each of the four scenarios to the right, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. If the large bat flies at 14.60 m/s and the small bat flies at 4.520 m/s, rank the frequency that the smaller bat detects in the four scenarios, from highest to lowest. Assume that the speed of sound is 343.0 m/s.In scenario C, some of the large bat\'s signal reflects off of the small bat and returns to the large bat, warning it of the smaller bat\'s presence. If the initial signal has a frequency of 66.70 kHz, what return frequency will the large bat detect? Calculate the final frequency to four significant figures.
Many nuclear reactors use heavy water moderators in which elastic collisions occur between neutrons and deuterons of mass 2.0 u. What is the speed of a neutron, expressed as a fraction of its original speed
A disk7.97cm in radius rotates at a constant rate of1160rev/min about its central axis. Determine the radial acceleration of a point on the rim
What is the moment of inertia of the object about an axis at the center of mass of the object, What is the moment of inertia of the object about an axis at the left end of the rod
Gayle runs at a speed of 4m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5m, her brother.
To fight a fire on the fourth floor of a building, firefighters want to use a hose of diameter 6.31cm to shoot 925 liters/minute of water to a height of 11m, What pressure must the water have inside the hose
An 79 kg person is parachuting and experiencing a downward acceleration of 2.0 m/s2 shortly after opening the parachute. What upward force is exerted on the open parachute by the air
A microscope uses beams of protons instead of photons/electrons. What wavelength would the beam of protons have if their momentum was acquired from a potential drop of 100 volts? (The answer is 2.87*10^-10 cm, but I don't know how to get there
The weight of passengers on a roller coaster increases by 53% as the car goes through a dip with a 35m radius of curvature
A 2.0 ð‘˜ð‘" package is released on a frictionless ramp inclined 53.1 ° above the horizontal, What is the speed of the package just as it reaches the spring
A drug prepared for a patient is tagged with 9943Tc which has a half-life of 6.05 h. What is its activity at the time it is injected
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 423 N and F2 = 355 N. What is the resultant of these two forces
What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is 5.10 ? 105 K
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