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In the lungs there are tiny sacs of air, which are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the ambiguity in its position is 0.130mm. What is the minimum uncertainty in the velocity of this oxygen molecule?
A weightlifter stands up from a squatting position whileholding a heavy barbell across his shoulders. Draw a freee-body diagram for the barbells
In a transformer, the voltage across the primary coil is 120 V rms, and the voltage across the secondary coil is 10 kV rms (i.e. 10 000V). What is the impedance of the secondary coil
An automobile has aa vertical radio antenna 1.20 mlong. The automobile travels at 65.0 km/h on a horizontalroad where earths magnetic field is 50.0 uT directed toward thenorth, calcutate the magnitude of this induced emf
A bird flies 3.0 km due west and then 2.0 km due north. Another bird flies 2.0 km due west and 2.0 km due north. What is the angle between the net displacement vectors of the two birds
A student decides to measure the muzzle velocity of a pelletshot from his gun. He points the gun horizontally. what is the initial speed of the pellet
Suppose you cycle 10.0 km to the east and 15.0 km north to get to a shopping mall from home. what is the direction the the pigeon should fly and how far must it travel to get home in the shortest time
A softball pitcher throws an underhanded pitch with the arm fully extended (straight at the elbow). Find the rotational kinetic energy of the pitcher's arm given its moment of inertia is 0.72 kg·m2
A 39.2-µF capacitor is connected across a 64.2-Hz generator. An inductor is then connected in parallel with the capacitor. What is the value of the inductance
six identical 10 microfarad capacitors are arranged in series forming a hexagon. they are labeled consecutively and a
A turntable is switched from 4.71 rad/s (45rpm) to 3.49 rad/s(331/3) and the platter rotates through an angle of 11.5 rad inreaching the new angular speed, What is angular accelerationof the platter
A spherical pinball, initially at rest, rolls down a ramp inclined at 18 degrees relative to horizontal. Determine the translational speed after 3 seconds
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, What is the temperature of the heating element in contact with the pot
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