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Suppose Arnold holds the gun one foot (.300 meters) from his axis of rotation, firing perpendicular to said axis. His mini-gun shoots Russian 7.62x39 (8.11 grams, 671m/s) at cyclic rate of 3000 rounds per minute. What is the average force his arm ..
A styrofoam box has a surface area of 0.80 m2 and a wallthickness of 2.0 cm, determine the thermal conductivity of the styrofoam
In a mass-spring system, the mass of the object is 80g and the spring constant is 200N/m. What is the period of oscillataions for this system
Since it is well known that the Coulomb potential has a much simpler form in spherical polar coordinates, why did we begin our treatment of the one-electron atom in rectangular coordinates?
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
An electron is accelerated from rest through a potential difference that has a magnitude of1.65 107 V. what is the relativistic kinetic energy (in joules) of the electron
1 a coil made of 5 loops of wire with a radius of 10.0 cm rotates about its diameter in a uniform magnetic field of
The sound level measured in a room by a boy watching a movie on a home theater system varies from 45 dB during a quiet part to 65 dB during a loud part. Compute how many times louder is the latter sound
A 75.0kg skier rides a 2830m long lift to the top of a mountain.The lift makes an angle of 14.6o with the horizontal. What is the change in the skier's gravitational potential energy
A worker is testing a multiple pulley system to estimate the heaviest object that he could lift. The largest downward force he could exert is equal to his weight 875N. When the worker moves rope1.5m the object moves 0.25m. What is the heaviest object..
A boat floating in fresh water displaces water weighing 33.0 kN. What is the weight of the water that this boat displaces
With each cycle, a 2550-W engine extracts 2180 J from a thermal reservoir at 87.7°C and expels 1570 J into a thermal reservoir at 21.7°C. What is the work done for each cycle
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