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Assume Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2πJ·s. Fuzzy has amass of 1.75 kg and is initially known to be within a pond 1.00 m wide.
a) What is the minimum uncertainty in his speed?
b) Assuming this uncertainty in speed to prevail for 5.10 s, decide the uncertainty in Fuzzy's position after this time.
A model-train transformer plugs into 120-V ac and draws 0.41A while supplying 7.8A to the train. Is the transformer step-up or step-down
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
A merry go round has a moment of inertia of 1000 kgm^2. When it is rotating at 2.62 rad/sec, the motor shut off. How large was the friction torque
A hair breaks under a tension of 1.1 N. What is the diameter of the hair? The tensile strength is 2.0 108 Pa
A free electron is placed between two large, parallel,nonconducting plates that are horizontal and 1.6 cm apart. One plate has a uniform positivecharge; the other has an equal amount of uniform negative charge.The force on the electron due to the ..
A 144-g cricket ball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. What is the cricket ball's speed after the collision
question calculate the velocity in ms-1 of photoelectrons ejected from a sodium metal surface which has a work function
an electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 2.50 mt. the
A particular spring has a force constant of 2.8×103N/m, How much work is done in stretching the relaxed spring by 7.0cm
A nonreflecting single layer of a lens coating is to be deposited on a lens of refractive index n=1.78. Find the refractive index of a coating material
A force of 720 Newton stretches a certain spring a distance of 0.150 meter. Find the potential energy in the spring when a 60.0 kilogram mass hangs vertically from it? (Ignore the mass of the spring)
A light spring-gun projectile launcher is mounted on an 0.453 kg air track glider. The gun points upward at an angle of 32 o with the horizontal track. What is the speed of the air-track glider after the gun is fired
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