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A uniform rod of mass 2.75×10-2 and length 0.410 rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 , are mounted so that they can slide along the rod. They are initially held by catches at positions a distance 4.80×10-2 on each side from the center of the rod, and the system is rotating at an angular velocity 28.0. Without otherwise changing the system, the catches are released, and the rings slide outward along the rod and fly off at the ends.
n undamped 1.47-kg horizontal spring oscillator has a spring constant of 25.1 N/m, What is the oscillator\'s total mechanical energy as it passes through a position that is 0.651 of the amplitude
What are typical densities ?c, pressures Pc, and temperatures Tc in cores of stars and how does this depend on mass? And what processes dominate the pressure?
A string 1.50 m long will break if the tension in it exceeds 2X10^2N. How fast (in m/s) can a rock of mass 1.50 kg be whirled in a circular horizontal path if the string is not to break? Assume the rock moves on a smooth horizontal surface (No fri..
The atmosphere on Mars is almost all carbon dioxide (CO2), and has a pressure of about 6.9×102 Pa, what is the mass of one cubic meter of the atmosphere
A firefighter mounts the nozzle of his fire hose a distance 40.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. By what factor was the nozzle diameter changed
A radio station broadcasts with a frequency of 1000 kHz with apower of 89 kW. How many photons per second does the antenna emit
the rear window of a van is coated with a layer of ice at 0degc. the density of ice is 917 kgm3 and the latent heat of
A skydiver of 75 kg mass has a terminal velocity of 60m/s. At what speed is the resistive force on the skydiver half that when at terminal speed
What must your average speed over the next 10 miles be to have your average speed for the total 20 miles be 13m/h? c)Given this average speed for the first 10 miles, can you possibly attain an average speed of 14for the total 20-mile ride?
A spaceship travels toward the Earth at a speed of 0.97c. The occupants of the ship are standing with their torsos parallel to the direction of travel. What are the occupants' width according to others on the spaceship
Common light bulbs are designed for use with120 V and are rated by the power dissipated as heat and light. What is the resistance of a 40W bulb?
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 32.9 dB. what is the intensity delivered to the eardrum
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