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A 72.0-kg person pushes on a small doorknob with a force of 5.00 N perpendicular to the surface of the door. The doorknob is located 0.800 m from axis of the frictionless hinges of the door. The door begins to rotate with an angular acceleration of 2.00 rad/s2. What is the moment of inertia of the door about the hinges?
In a simple model for a radioactive nucleus, an alpha particle ( m = 6.64 * 10^-27 kg) is trapped by a square barrier that has width 2.0 fm and height 30.0 MeV. What is the tunneling probability
Slopping air track: A glider moves frictionlessly along an air track that has been tilted by 1.5 inches over a span of 1.00 meters. What is the expected acceleration of the glider
question a flywheel turns through 28 rev as it slows from an angular speed of 6.1 rads to a stop. a assuming a constant
The positive muon , an unstable particle, lives on average 2.20×10?6 (measured in its own frame of reference) before decaying. what average lifetime is measured in the laboratory
A 8.00 nF capacitor is connected to a battery and is charged to a maximum charge of 7.40 ?C through a 1.60 k? resistor. What is the voltage of the battery
The second order bright fringe of 640.0 nanometer light falling on a diffraction grating is observed at 16.9o. Determine how far apart are the slits
The position of a mass oscillating on a spring is given by x=(4.5cm)cos[2?t/(0.63s)]. What is the period of this motion? What is the first time the mass is at the position x=0?
a short bar magnet placed with its axis at 30ordm with a uniform external magnetic field of 0.25 t experiences a torque
An object initially moving at 12 m/s accelerates uniformly to 33 m/s in 16 s. Calculate the total distance moved
a laser beam passes through a converging lens with a focal length of 19cm... at what distance past the lens has the
A turtle and a rabbit engage in a footraceover a distance of 4.00 km. What was his average speed before he stopped
A tightrope walker walks across a 30.0 m long wire tied between two poles. what is the mass of the tightrope walker
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