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the energy gap in silicon is 11ev the average electron effective mass is 031m where m is free electron mass calculate
the earth is about to be swallowed by a black hole with the mass equal to ten solar masses at what distance from the
an observer is at 5pc from the sun in the plane of jupiters orbit once in 119 years jupiter crosses the disk of the sun
an rlc circuit consists of a 863 resistor a 49 microf capacitor and a 265 mh inductor connected in series with a 782 v
a rocket is traveling at speed v along the x axis of frame s it emits a signal for example a pulse of light that
frame s travels at speed v1 along the x axis of frame s in the standard configuration frame s travels at speed v2 along
a traveler in a rocket of proper length 2d sets up a coordinate system s with its origin o anchored at the exact middle
it has been suggested that rotating cylinders about 80 mi long and 50 mi in diameter be placed in space and used as
two converging lenses one with f 45cm and the other with f 44 cm are made into a telescopeassume these lenses are now
part ahow far away can a human eye distinguish two car headlights 18 m apart consider only diffraction effects and
airflow through a long 02 m2 air conditioning duct maintains the outer duct surface temperature at 10 c if the
consider a positive charge q that is released from rest at the origin in the orthogonal uniform electric and magnetic
the oxygen molecule o2 contains two oxygen molecules each with mass 27x10-27 kg and a bond distance of 124x10-10 m
consider an ideal monatomic gas of 1026 atomsi what is the internal energy of this system at 27 degcii if the
an electric generator contains a coil of 90 turns of wire formed into a rectangular loop 400 cm by 350 cm placed
a man enters a tall tower needing to know its height he notes that a long pendulum extends from the ceiling almost to
1 when a battery is connected to the plates of a 600-microf capacitor it stores a charge of 1080 microc what is the
a a 500-microf capacitor is connected to a 150-v battery how much energy is stored in the capacitorb had the capacitor
a girl delivering newspapers covers her route by traveling 400 blocks west 600 blocks north and then 500 blocks easta
a photon of energy 50 mev moves along the x-axis and compton scatters with an electron initially at rest after the
a body of rest mass m0 travelling initially at a speed 06c makes a completely inelastic collision with an identical
a simple model of a rubber band is a one-dimensional horizontal chain consisting of n linked segments each segment can
the e string of a violin has a mass per unit length of 0004 kgm and must be tuned to a frequency of 660 hz the
consider the gas-solid equilibrium in the model when oscillators in the solid move in three dimensionsa in the high
consider two identical particles of spin 12 that are confined in a cubical box of side l find the energy and the wave