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a proposed star wars antimissile laser is to focus 23 microm wavelength infrared light to a 50 cm diameter spot on a
the rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides thus a
two particles execute simple harmonic motion of the similar amplitude and frequency along close parallel lines they
the suspension system of a 2100 kg automobile sags 12 cm when the chassis is placed on it also the oscillation
a discover the resolving power of a grating needed to separate the sodium-d spectral lines which are at 5889 nm and
a tube of glowing gas emits light at 500 nm and 400 nm in a double-slit apparatus what is the lowest order 500 nm
a screen is placed 510 cm from a single slit which is illuminated by light of wavelength 681 nm if the distance among
the drawing shows two thermometers a and b whose temperatures are measured in dega and degb the ice and boiling points
an object is placed 700 cm in front of a concave mirror the radius of curvature of the mirror is 2000 cm where is the
a rigid container of nitrogen gas n2 at 24deg c contains 440 l at a pressure of 35 atm if 266 kj of heat are added to
a room is lighted with four 100 w incandescent light bulbs the power of 100 w is the rate at which a bulb changes
a person in a boat sees a fish in the water of index 133 at an angle of 30relative to the waterrsquos surface what is
a rocket ship is 450 m long according to measurements made in its rest frame and moves at 0385c by respect to the earth
a cylinder radius 011 m center-of-mass rotational inertia 0015555 kgmiddotm2 and mass 134 kg starts from rest and
the suspension system of a 2400 kg automobile sags 11 cm when the chassis is placed on it also the oscillation
an unstable high-energy particle is created in the laboratory and it moves at a speed of 0950crelative to a stationary
potassium has a work function of 221evnbspwhat is the maximum kinetic energy of electrons escaping from a sample of
a current-carrying wire of length 50cm is positioned perpendicular to a uniform magnetic fieldnbsp if the current is
a capacitor is connected across the terminals of an ac generator that has a frequency of 440 hz and supplies a voltage
when does the capacitor have its maximum charge14 cycle before the voltage reaches its maximum value the capacitors
a tarantula is sitting 45m in front of a concave spherical mirror with radius of r 14ma construct a ray diagram to
a rigid container of nitrogen gas n2 at 31deg c contains 407 l at a pressure of 35 atm if 266 kj of heat are added to
the platter of a record player by a mass of 05 kg and radius 012 m is spinning with an angular speed of 5 rads the
the tower of doom at glitch gardens in denver colorado lifts15 people 50m into the air the engineers assume the average
a proton is located at a distance of 0420 m from a point charge of 830 micro coulombs the repulsive electric force