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Starting from rest a 92 kilogram fire fighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 830 N, and his speed at the bottom of the pole is 3.5 m/s. Compute how far did he slide down the pole?
At t=0, a 734 g mass at rest on the end of a horizontal spring (k= 113N/m) is struck by a hammer, Determine the amplitude, maximum acceleration and total energy
What intensity level of the horn's sound is observed by somebody waiting at an intersection 58m from the train.
A geologist finds that a Moon rock whose mass is 10.15 kg has an apparent mass of 5.68 kg when submerged in water. What is the density of the rock
A planet's moon travels in an approximately circular orbit ofradius 7.0 x 107 m with a period of 6 h 29 min. Calculate the mass of the planet from this information
an electron is accelerated by a constant electric field of magnitude 285 nc.a find the acceleration of the electron.b
A neutron moved through a 3.6 T field with a speed of 189091 m/s. The velocity of the neutron is perpendicular to the field. Find what is the magnetic force on the neutron
a 150g of aluminum at an initial temperature of 100 c is placed in 1.00 kg of water at 20.0c What is the final temperature of the mixture
looking straight downward into a rain puddle whose surface is covered with a thin film of gasoline you notice a
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 newtons. How is the mass of the rock affected by its change in position
A 3800 kilogram open railroad car coasts along with a constant speed of 8.60 m/s on a level track. Find the speed of the car after 90 minute
A 1000Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65m. What is the speed of oxygen?
A steel wire of length 1.97m with circular cross section must stretch no more than 0.270cm, What minimum diameter dmin is required for the wire
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