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A certain radioisotope has a half-life of 8.57 days. What percentage of an initial sample of this isotope remains after 28 days?
a proton accelerates from rest in a uniform electric field of 620 nc. at some later time its speed is 1.4e6 ms.a find
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 84.0 kHz and an rms strength of 6.30×10^?9T.
A photon of wavelength 0.45000nm strikes a free electron that is initially at rest, What is the speed of the recoil electron after the collision
A circular wire loop of radius 13cm carries a current of 3.66 A. It is placed so that the normal to its plane makes an angle of 34.8° with the uniform magnetic field of magnitude 9.70 T.
Determine the anchoring forces Rx and Ry required to hold in place a conical nozzle at the end of hose when the water flowrate is 50 L/min. The nozzle is oriented at a 45 degree angle as shown below. Assume that the water has a density of 1000 kg/m3.
A circular loop with a radius of .200m is placed in a uniformmagnectic field of magnitude 0.850T. find the increase in magneticfield through the loop
What is the speed of the bowl? The speed of sound is 340 meters per second.
A point source of light lies on the central axis of a bi-convex spherical lends who radii of curvature are both measured to be 19.4 cm. The lens is made up of glass with an index of refraction of 1.50 and the source is 3.17 meters to the left of i..
A block is projected up an inclined, frictionless plane withan intial speed v0. With that intialvlocity, the block travels a distance D and momentarily comesto halt before sliding down the inclined plane.
The truck is stalled at a distance of 10 ft from the left end and the trailer is 20 ft from the left end. Find the forces on the left end F1 and on the right end F2 of the bridge.
At time t = 0 in the galaxy frame of reference, civilization A launches its first interstellar spacecraft. Civilization B launches its first spacecraft 50,000 years later. A being from a more advanced civilization C is traveling during the galaxy at ..
In a nuclear experiment a proton with kinetic energy 3.5 MeV moves in a circular path in a uniform magnetic field. a)If the magnetic field is B = 1.1 T what is the radius of the orbit? b) What energy must an alpha particle (q = +2e, m = 4.0 u) and a ..
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