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a small magnet of length 71 cm is placed at an angle of 80 degree to the direction of uniform magnetic field of
a laser emits a cylindrical beam of light 28mm in diameterif the average power of the laser is 26mw what is the rms
a 73kw radio station broadcasts its signal uniformly in all directionspart awhat is the average intensity of its signal
what is the maximum value of the electric field in an electromagnetic wave whose average intensity is 375wm2
a television is tuned to a station broadcasting at a frequency of 700times107hz for best reception the rabbit-ear
in radiofrequency rf ablation a small needle is inserted into a cancerous tumor when radiofrequency oscillating
when the voyager i and voyager ii spacecraft were exploring the outer planets nasa flight controllers had to plan the
the radiation pressure exerted by beam of light 1 is half the radiation pressure of beam of light 2 if the rms electric
an electric field is defined in three-dimensional space by the equatione 2 - 2xy z x2 x y nc what is the change in
1 you put a mass on the end of a light string so that it forms a simple pendulum that swings back and forth with a
given the capacitors c12muf c215 muf and c33muf what arrangement of parallel and series connections with a 12-v
what is the derivative of the transverse unit vector etheta in subscript with respect to time ie dethetadt derive the
a uniform stick d 1 m long with a total mass of 249 g is suspended vertically from a frictionless pivot at its top end
fig 23-1 shows equipotentials surrounding a pair of charges qa and qb the value of the potential half-way between the
a wire loop with an area of 30times102 is in a magnetic field of 023 directed at a angle 30 to the plane of the loop if
an object at rest in a coordinate frame suddenly explodes into three parts of equal mass m two parts move away at right
the mass of an electron is 91110-31kg what is the mass of one negative coulomb electron1 56910-12kg254810-7note show
realistic ballistic penduluma uniform stick d 1 m long with a total mass of 249 g is suspended vertically from a
the bulk modulus for helium is 101x105 nm2 and its density is 0179 kgm3 how many times the speed of sound in air 331ms
a particle falls in earths gravity the force of air resistance is f v1 v2 where v1 is the velocity v2 is the speed and
negative charge -q is distributed uniformly around a quarter-circle of radius a that lies in the first quadrant with
experimenters at the national institute of standards and technology have made precise measurements of the speed of
a non-uniform but spherically symmetric distribution of charge has a charge density pr given byprp0 1-rr for r lt or
a light plane mass m makes an emergency landing on a short runway with its engine off it lands at speed v0 a hook on
a prospector finds a solid rock composed of granite 2650 kgm3and gold the volume of the rock is330multiplied