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consider an oxide-to-n-type silicon junction at room temperature the impurity doping concentration in the silicon is
the surface of the drum of a laser printer is negatively charged except in certain print black regions such as
a large cruise ship of mass670107kg has a speed of108ms at some instanta what is the ships kinetic energy at this
a space capsule measures the radiation pressure p1 a distance r1 from the center of a spherical light source if the
the propellers of a wwii destroyer produced a thrust of 265 mn to drive the ship at a top speed of 17 ms if the engines
during a storm a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle
an astronaut weighs 85 n on the moon where the acceleration of gravity is 162 ms2 how much in n does she weigh on
the drawing shows an adiabatically isolated cylinder that is divided initially into two identical parts by an adiabatic
a 35 kg boy sits atop a sphere of frictionless ice of radius r20m he begins to slide and eventually falls off how far
a bullet is fired through a board that is 150 cm thick the bullet moves along a direction perpendicular to the board
during the heavy bombardment period of our solar system astroids slammed into earth with large speeds thus resluting in
a 69-kg sky diver jumped out of an airplane at an altitude of 070 km she opened her parachute after a while and
the tow rope breaks just as a water skier at a speed of 10 ms enters the bottom of a ramp inclined at 25 degrees the
the scale of a spring balance reading from zero to 180 n is700 cm long a fish suspended from thebalance is observed to
amy 60kg initial velocity of 75 ms is skating towards bob 90kg and initial velocity of 4 ms bob is skating away from
an 80kg man falls our of a 15m tree starting at 0 speed how much potential energy does he start with in the tree when
a circular rod of length 25cm and diameter 8mm is made of 1045grade steel a calculate the stress and strain in the rod
two batting robot sliding on a frictionless surface robot a with a mass 20 kg initially moves at 20 ms parallel to the
a force of 15n is applied at an angle of 30 degrees to the horizontal on a 0750kg block at rest on a frictionless
a tennis ball is struck at the base line of the court 133 m from the net the ball is given an initialvelocity with a
a the elevator begins to accelerate at 15ms2 what is his apparent weightb the elevator continues to move upwards with a
the electric field just above the surface of the charged hollow drum of a photocopying machine has a magnitude e of30e5
an archeological specimen containing 92 g of carbon has an activity of 16 bq how old in years is the
a sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 k to 383 k if 250 j of work is
a laser emits a single 20-ms pulse of light that has a frequency of 283 acute 1011 hz and a total power of 75 000 w how