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A cord of negligible mass is wound around the rim of a flywheel of mass 20 kg and radius 20 cm. Steady pull of 25 N is applied in tue cord. The flywheel is mounted on a horizontal axis with frictionless bearings. Compute the angular acceleration of the wheel. Find the work done by the pull when 2m of the cord is unwounded. Find the kinetic energy of the wheel at this point.Given that M=20kg and R=20cm.
A disk of radius R has a uniform surface charge σ on one side. A circular hole of radius R/2 is now cut in the center of the disk. What is the electric field at the center of the hole
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 193m/s and a frequency of 240 Hz . The amplitude of the standing wave at antinodes is 0.440cm.
Two forces F1 and F2 are acting on a mass M=6.0 kg. The force F1 = 5.0i + 7.0j + 2.0k, in N. The acceleration of the mass is given by a = 2.0i + 7.0j + 5.0k, in m/s2. Calculate the magnitude of F2.
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
A flywheel turns through 26 rev as it slows from an angular speed of 6.3 rad/s to a stop.
a stone is thrown horizontally with an initial speed of 10 ms from the edge of a cliff. a stop watch measures the
What do you think the arrows on the puck are illustrating - How do the arrows from the positive charges compare and contrast to the ones from the negative balls?
A balloon is filled with 4.65 liters of helium at a pressure of 1.10 atm and a temperature of 26.5° C. Discover the mass of the helium. Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temp..
A potential difference of 11 V is found to produce a current of 0.38 A in a 3.5 m length of wire with a uniform radius of 0.40 cm. determine the resistance and resistivity
A Young's slit experiment shows about 15 fringes on either side ofthe center of the diffraction pattern,with the eight fringe on either side of the center missing. Why?
A mountain climber is steadily descending at -1.94 m/s using a rope. (Assume the positive direction is upward.) and After 3.7 seconds, what is the displacement of the first aid kit from the mountain climber (how far below)
A particular engine has a power output of 4.27 kW and an efficiency of 22.2%. The engine expels 7236 J of energy as heat in each cycle. Find the energy absorbed in each cycle
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