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The transverse displacement of a particular wave on a string is given by: D(x,t) = 0.3 cos(1.57x ? 7.85t) where D and x are in meters, and t is in seconds. For this wave, find its:
a) Wavenumber
b) Wavelength
c) Angular frequency
d) Frequency
e) Period
f) Amplitude
A train moves at speed v. Bullets are successively fired at speed u (relative to the train) from the back of the train to the front, What is the maximum number of bullets that are in flight at a given instant, in the ground frame
A toroidal solenoid has a mean radius of 14.0 and a cross-sectional area of 3.40 and is wound uniformly with 120 turns. What is the mutual inductance of these coils
A three level laser has energy levels E 1=1.50 eV, E 2=3.50 eV, and E 3=5.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
A "swing" ride at a carnival consists of chairs that are swung in a circle by 19.3 m cables attached to a vertical rotating pole, Find the speed of the chair
A sealed tank containing seawater to a height of 11.1m also contains air above the water at a gauge pressure of 2.85atm. How fast is the water moving
Monochromatic light is incident on a diffraction grating and the first maximum is observed at an angle 5.2 degrees. At what angle is the 4th maximum seen
A subway train starts from rest at a statrion and accelerates at a rate of 1.65m/s^2 for 14.2s. Find the total distance covered
A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. What is the density of the rock
Find the expression for the electric field, E? , of the ring as the point P becomes very far from the ring (x >> R) in terms of the radius R
An east-west electric power line carries a 500-A{\rm A} current toward the east. Determine the direction of this magnetic field at Earth's surface directly under the wire
A small plastic sphere with a charge of -5.0 nC is near another small plastic sphere with a charge of -15 nC, what is the distance between the spheres
A point particle with charge q = 86 µC is placed at a corner of a cube of edge a = 12 cm, What is the flux through each of the other cube faces
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