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A dog runs back and forth between its two owners, who are walking toward one another. the dog starts running when the owners are 8.2m apart. if the dog runs with a speed of 2.7m/s, and the owners each walk with a speed of 1.3m/s, how far the dog traveled when the owners meet?
a student standing on a stationary skateboard tosses a textbook with a mass of mb 1.55 kg to a friend standing in
a fugitive tries to hop on a freight train traveling at a constant speed of 5.0 ms. just as an empty box car passes him
While hauling a log in the back of a flatbed truck, you are pulled over by the state police, The log has a mass of m = 844 kg; the truck has a mass of M = 9750 kg. According to the truck manufacturer, Calculate the minimum coefficient of static frict..
A 150 Newton horizontal force pushes a 20 kg mass sitting on a horizontal surface. Additionally, the horizontal surface exerts a 50 Newton frictional force on the mass. find the hydroxide-ion concentration of this solution
One string of a certain musical instrument is 72.0 cm long and has a mass of 8.76 g . It is being played in a room where the speed of sound is 344 m/s . A)To what tension must you adjust the string so that, when vibrating in its second overtone, i..
If the object is in contact with the wall for 2.0 ms, what is the magnitude of the average force on the object by the wall?
A performer, seated on a trapeze, is swinging back and forth with a period of 9.95 s. what will be the new period of the system
To reach the center of teh gym ceiling, a 500N student tightroper walks to the center of a rope strung above the gym. what is the minimum angle the rope can make with the horizontal
An electric device, which heats water by immersing a resistance wire in the water, What is the resistance of the heater wire
An air-track glider attached to a spring oscillates between the 12.0 cm mark and the 55.0 cm mark on the track. calculate the maximum speed of the glider
A pipe with both ends open has a fundamental frequency of 510 Hz. You cover one end of the pipe. What is the new fundamental frequency?
A particle of mass m0 is given a kinetic energy equal to one-fourth its rest-mass energy. How fast must the particle be traveling
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