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A small 0.500-kg object moves on a frictionless horizontal table in a circular path of radius 1.00 m. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under the table begins to pull the string downward to make the circle smaller. If the string will tolerate a tension of no more than 105 N, what is the radius of the smallest possible circle on which the object can move?
A long solenoid with 12.8 turns/cm and a radius of 8.91 cm carries a current of 21.9 mA. What is the magnitude of the magnetic field there
The Bullet Train The Shinkansen, the Japanese"bullet" train, runs at high speed from Tokyo to Nagoya. Riding onthe Shinkansen, you notice that the frequency of a crossing signalchanges markedly as you pass the crossing.
a young lady runs for 20 minutes and gives off 128 kcal of heat by evaporation of water from her skin. how much water
Although California is known for earthquakes, it has large regions dotted with precariously balanced rocks that would be easily toppled by even a mild earthquake. What would be the magnitude of the maximum acceleration of the oscillation, in terms ..
A sound wave from a police siren has an intensity of 116.9 W/m2 at a certain point; What is the intensity level of the sound wave due to the ambulance
A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. What is the speed of the object at the instant
A 40-g object connected to a spring with a force constant of 30 N/m oscillates with an amplitude of 8 cm on a frictionless, horizontal surface. Find the total energy of the system
white light is sent downward onto a horizontal thin film that is sandwiched between two materials. the indexes of
a 5,48 kg ice skater is moving at 3.94 m/s when she grabs the looseend of a rope, What is the ratio of this force to her weight
A car is going around a corner with a radius of 68 m. At one instant, its speed is 19 m/s and its speed is increasing at a rate of 3.2 m/s^2. What is the total linear acceleration of the car
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
A uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
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