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Calculate the commutation relation for the inner product of position and momentum and angular momentum. In other words, what is: [p\cdotr, L] (vector p dotted with vector r, vector L)?
In a Hall-effect experiment, a current of 2.1 A sent lengthwise through a conductor 1.0 cm wide, 4.5 cm long, find the drift velocity of the charge carriers
Before starting this problem, review COnceptual Example 3. Suppose that hail described there bounces off the roof of the car with a velcity of +15 m/s. calculate the force exerted by the hail of the roof
assume a brown dwarf has a surface temperature of 1000 K and approximately the same radius as jupiter. what is its luminosity compared to that of the sun
A 33.2 m steel wire and a 25.6 m copper wire both with 1.00 mm diameters, are connected end to end and are stretched to a tension of 120 N. How long does it take the transverse wave to travel the entire length of the two wires.
A thin rod of length 9.5 m and mass 16 kg is supported at a 28? incline. Find the normal force exerted on the rod by the lower support
A series RLC circuit consists of a 96.0 ? resistor, a 0.200Hinductor, and a 43.0 ?F capacitor. It is attached to a120 V/60 Hz power line. What is the average power loss
The terminal speed of a sky diver is 124 km/h in the spread-eagle position and 338 km/h in the nosedive position. Assuming that the diver's drag coefficient C does not change from one position to the other
A boy in a wagon is moving at 3.1 m/s east when another boy begins pulling on the wagon in the direction opposite to its motion at 1.25 m/s^2. How far from the starting point is the wagon
With what tension should a rope with length 3.00m and mass 0.135kg be stretched for transverse waves of frequency 43.0Hz to have a wavelength of 0.720m. What torque does friction exert even as this wheel is slowing down.
A 61kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 37cm x 1.8m. What is his terminal speed if he falls feet first
A cosmic-ray proton is moving at such a speed that it can travel from the Moon to Earth in 1.5s. At what fraction of the speed of light is the proton moving
An empty sled of mass 25kg slides down a muddy hill with the constant of 2.40m/s. The slope of the hill is inclined at the angle of 15 degrees with the horizontal.
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