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Q. A severe thunderstorm dumped 2.5 in of rain in 30 min on a town of area 33km2. What mass of water (in kg) fell on town? One cubic meter of water has a mass of 103kg.
Q. A bat emits a sound whose frequency is 82.8kHz. The speed of sound in air at 20oC is 343 m/s. However, the air temperature is 38.7 oC, so the speed of sound is not 343 m/s. presume that air behaves like an ideal gas, and find the wavelength of sound.
A 0.60 kg mass vibrates according to the equation where x is in meters and t is in seconds. find out (a) amplitude, (b) frequency, (c) total energy, and (d) kinetic energy and potential energies when x = 0.30 m.
Find the probability that the electron will tunnel through the barrier.
how to Calculate the horizontal distance the ball would travel if the same spring were aimed 32 deg from the horizontal.
how fast the air flow over the upper surface of the wing. What is the coefficient of kinetic friction between the box and the floor.
Determine Maximum wavelength and Minimum wavelength. How various penguins of mass 16 kg each can stand on the ice block before they find their feet wet.
What focal length does the lens require
Explain the spacing between allowed vibrational energy levels
Some skin divers go as deep as 50 m. What is the gage pressure at this depth in fresh water, and what is the ratio of absolute pressure at this depth to normal atmospheric pressure.
An air traffic controller has two aircraft on radar. The first is at an altitude of 0.5 km, a horizontal distance of 3 km measured along the ground to the point directly underneath the plane, and a bearing of 115° west of north.
A 425 kg bear grasping a vertical tree slides down at constant velocity. What is friction force that acts on the bear.
Suppose that the speed of the water in the reservoir is zero, and that the water flow is steady. Overlook both air resistance and the height difference between the reservoir and the muzzle.
A train is traveling up a 3.3 incline at a speed of 3 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? How far did the last car travel before momentarily coming..
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