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A physics professor demonstrates the Doppler effect by tying a 580HZ sound generator to a 1.0m--long rope and whirling it around her head in a horizontal circle at 120rpm . What is the highest frequency heard by a student in the classroom? What is the lowest frequency heard by a student in the classroom?
A 2.5kg block slides along a frictionless surface at 1.6m/s. A second block, sliding at a faster 4.0m/sPh, what was the mass of the second block
A velodrome track is banked so that a bicycle traveling at 43.5 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 59.0 m
7.0×10?3mol of gas undergoes the process shown in the figure. What is the initial temperature? What is the final temperature
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. find the oxygen concentration at the interior end of the tube
A 0.145- kg baseball traveling 34.50 m/s is stopped in 0.183 s by a catcher's mitt. What is the average force on the catcher's mitt
A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 26.0 m/s. At what height above the cannon should the net be placed in order to catch the daredevil
question1three identical 3.60 masses are hung by three identical springs. each spring has a force constant of 4.90 and
The excess internal energy of metabolism is exhausted through a variety of channels, such as through radiation and evaporation of perspiration. Calculate the rate at which you lose energy by exhaling humid air
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
A fish in a flat-sided aquarium sees a can of fish food on the counter. What is the actual distance between the can and the aquarium
The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maximum speed
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
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