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A bar magnet with its center at the origin has a magnetic dipole moment equal to 6.50 J/T, directed along the positive z axis. Find the strength of the magnetic field created by this bar magnet at the point (0, 0, 2.00 m)?
How fast must an electron move to have a kinetic energy equal to the energy of a photon of wavelength (l = 600 nm)?(The energy of the electron is assumed to benon-relativistic)
a train with proper length of 200m is traveling at the speed of 120kmhr. an observer on the ground sees two lightening
A positively charged rod is brought close to one end of an uncharged metal rod but does not actually touch it. What type of charge does the end of the metal rod closest to the positively charged rod acquire?
A 55.1 kg ice skater is moving at4.10 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She thenmoves in a circle of radius 0.800 maround the pole.
The work function of a certain metal is ? = 2.55 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck's constant is: h = 4.1357×10-15 eVs.)
q1. three equal point charges each with a charge of 1.90 mu c are placed at the corners of an equilateral triangle
While giving an injection with a hypodermic syringe, a nurseapplies a force of 3.95 N to the piston of a syringe. The pistonhas a circular cross section of radius 4.00 mm. What is the pressure increase in the fluid within the syringe?
The electric field caused by a certain point charge has a magnitude of 6800N/C at a distance of 0.200m from the charge
A system with m = 0.026 kg , k = 35 N/m and b = 0.59 kg/s is driven by a harmonically varying force of amplitude 3.6 N. Find the amplitude of the steady-state motion
A 5 kg block sits on a surface with a maximum static coefficient of friction of 0.60. A 10g bullet is fired into the block. What must be the speed of the bullet to just make the block start moving
a rocket of mass 4.5 x 105 kg is in flight. its thrust is directed at an angle of 53.0deg above the horizontal and has
The tropical year, the time from vernal equinox to the next vernal equinox, is the basis for our calendar. Find the number of seconds in one and a half tropical years
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