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1. Estimate the uncertainty in the momentum of an electron whose location is uncertain by a distance of 2 Angstrom. What is the uncertainty in the momentum of a proton under the same conditions?
2. What can one conclude about the relative velocities and energies of the electron and proton in the last problem? Are wave phenomena apt to be more apparent for light particles than for heavy ones?
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
A storage tank 25 m hight is filled with gasoline. Calculate the force that acts on a square access hatch atthe bottom of the tank that measures 0.25m by 0.25m
a fisherman is dozing when a fish takes the line and pulls it with a tension F the spool of the reel is at rest intialy, find the magnitude of the final angular velocity of the spool
A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 28.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground
A layer of oil (n = 1.45) floats on an unknown liquid. A ray of light originates in the oil and passes into the unknown liquid. What is the index of refraction of the unknown liquid
A thin uniform cylindrical turntable of radius 2.5 m and mass 32 kg rotates in a horizontal plane with an initial angular speed of 10 rad/s. Calculate the loss of energy to thermal energy
An outside loudspeaker (considered a small source) emits sound waves with a power output of 80 W. Find the intensity level in decibels at that distance
The half-life of a muon is 2.2 s as measured in its rest frame. How fast must a beam of monoenergetic muons is travelling if half of them are observed to decay in 3.3 s
The string on a string bass vibrates at a fundamental frequency of 54 Hertz. If the string's tension were increased by a factor of 5, find what would be the new fundamental frequency
A small piece of dust of mass m = 1.2 g travels horizontally through an electric air cleaner in which the electric field is 472 N/C, What is the charge of the dust particle
Driving home from school, you spot a ball rolling out into the street. You brake for 1.20 s, slowing your 950 kg car from 16.0 m/sto 9.50 m/s. How far did you travel while braking?
An ambulance moving at 42 m/s sounds its siren whose frequency is 450 Hz. a car is moving in the same direction as the ambulance at 25 m/s. what frequency does a person in the car hear as the car approaches the ambulance? After the ambulance passe..
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