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An object of 50.5 N is attached to the free end of a light string wrapped around a reel with a radius of 0.250 m and mass of 3.00 kg. The reel is a solid disk, free to rotate in a vertical plane about the horizontal axis passing through its center. The suspended object is released 5.50 m above the floor.
(a) Determine the tension in the string, the acceleration of the object, and the speed with which the object hits the floor.tension Nacceleration m/s2speed m/s
(b) Verify your answer by using the principle of conservation of energy to find the speed with which the object hits the floor.m/s
Calculate the binding energy of the last neutron in the 4320Ca nucleus. (Hint: You should compare the mass of 4320Ca with the mass of 4220Ca plus the mass of the last neutron. The mass of 4220Ca = 41.958622 u, whereas the mass of 4320Ca = 42.95877..
A parallel plate capacitor of capacitance 7.2 µF has the space between the plates filled with a slab of glass with ? = 3.5. Find the capacitance after the glass is removed
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
A brick of mass 1.05 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.46 m. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can ha..
The rocket moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. Find out the maximum altitude reached by the rocket.
Describe in words how you would go about calculating the work done by the electric field on the electron as it travels along its trajectory.
A 3000-kg Ferris wheel accelerates from rest to an angular speed of 0.17rad/s in 11s, What is the net torque on the wheel
A cyclist intends to cycle up a hill whose vertical height is 170m.. Assuming the mass of bicycle plus cyclist is 75 kg
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. How high up is Bob, if the ball started from exactly 2 m above the edge of the cliff
Suppose a car is traveling at +20.7 m/s, and the driver sees a traffic light turn red. After 0.314 s has elapsed (the reaction time), What is the stopping distance of the car
Ann uses a hose to water her garden. The water enters the hose through a faucet with a 6.0-cm diameter. what is the diameter of the nozzle
A wheel is spinning clockwise at a 10 revolutions per second at t = 0. Due to friction in the bearings supporting the axle, the wheel slows down, losing 0.500 revolutions per second in angular velocity each second, until it comes to rest.
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