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An interferometer can be used to measure very small distances, much like a caliper but with a far greater precision. A particular interferometer uses light of wavelength 460nm. A measurement is taken by watching 26 bright fringes pass through the viewing scope.
How far did the movable arm of the interferometer travel?
Water flows through a garden hose that goes up a step 20.0 cm high. The water speed is 1.20 m/s at the lower section. what is the water pressure at the top section
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
A point source of source emits a tone with a power of 45 W that has a frequency of 429 Hz. calculate the pressure amplitude in Pascals of the sound
q1. a test rocket is launched by accelerating it along a 200.0-rm m incline at 1.57 rm ms2 starting from rest at point
Find out the velocity of the plane relative to the earth.
What is the acceleration of the crate.Describe a procedure to investigate the factors.
q1. a 75-kg person sits on a 3.7-kg chair. each leg of the chair makes contact with the floor in a circle that is 1.5
What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and the cloud to be the other plate, What is the capacitance of the system
A point charge 8.00 nC is at the center of a cube with sides of length 0.200m. compute the electric flux through the surface of the cube
A resistor with an unknown resistance is connected in parallel to a 12 ohm resistor. while both resistors are connected to an emf source of 12 V, current across the unknow resistor is measured with an ammeter to be 3.0 A. What is the resistance of..
A train is travelling up a 5.0 degree incline at a speed of 2.25m/s when the last car breaks free and begins to coast without friction. a) How long does it take for last car to come to rest momentarily? b) How far did the last car travel before mo..
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