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Three particles are placed in the xyplane. A 40-g particle is located at (3, 4) m, and a 50-g particle is positioned at (-2, -6) m. Where must a 20-g particle be placed so that the center of mass of this three-particle system is located at the origin?
The average distance between the proton and the electron in a hydrogen atom is 5.29 x 10-11 m. With the particles separated by this distance, the 'Bohr radius,' what is the electric potential energy of the configuration?
An entertainer, when performing a bubble trick, forms one bubble inside another. What is the gauge pressure in the inner bubble
A 15 kg block slides down a slope that makes an angle of 40 degrees with the horizontal. If the coefficient of kinetic friction between the block and the slope is 0.35, what is the angle that the normal force makes with respect to the horizontal?
A submarine of mass 2.88 x 106 kg and initially at rest fires a torpedo of mass 251 kg. The torpedo has an initial speed of 105 m/s. What is the initial recoil speed of the submarine
two concrete spans that form a bridge of total length l0 314 m when the temperature is t0 68of are placed end to end
an engine performs a total of 15000 j of work in one minute: what is its power output in kilowatts and in horsepower
At an air show a jet flies directly toward the stands at a speed of 860 kilometer per hour, emitting a frequency of 2800 Hertz, Find what frequency do they receive as the plane flies directly away from them
If, say, two variables are positively correlated, then they will (on a short timescale) evolve in a directed manner instead of by random walk, as shown in figure 30.3. This may significantly reduce the time required to obtain independent samples.
A swing is made from a rope that will tolerate a maximum tension of 1.0 * 10^3 N without breaking. What is the mass of the heaviest person who can ride the swing
the secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. the turns
You are on a roof that is 15 m high and you are launching balloons off at an angle of 30o above the horizon with a speed of 20 m/s. Determine the horizontal range of the balloons
Suppose a manufacturing plant has an average sound intensity level of 97.0 dB created by 25 identical machines. Find the total intensity created by all the machines
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