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neutral hydrogen can be modeled as a positive charge of 16 x 10 -19 the proton surrounded by a spherically symmetric
at t 295 second a point on the rim of a 0195 meter radius wheel has a tangential speed of 485 ms as the wheel slows
a compact disc cd stores music in a coded pattern of tiny pits 10-7 meter deep the pits are arranged in a track that
a weight suspended from a spring is seen to bob up and down over a distance of 20 centimeter twice each second evaluate
a particle is trapped in a potential well described by ux 15 x2-b where u is in joules x is in meters and b 35 joule
a bowling ball is released at the upper edge of a ramp that is inclined at an angle of 37o with the floor the ramp is
a ski tow operates on a 150o slope of length 300 meter the rope moves at 120 kmh and provides power for 50 riders at
a cylindrical barrel with a radius of 30 centimeter and a mass of 75 kilogram rolls across a warehouse floor without
create a student assessment to assess what you want the students to learn this assignment can be any assessment type
statistical significance is a reserved term in research it is only used to describe research results that exceed the
if you wanted to prove cause and effect which research method would you use correlational or experimental and
a sheet of glass having an index of refraction of 140 is to be coated with a film of material having an index of
the collision among a hammer and a nail can be considered to be approximately elastic compute the kinetic energy
a ball leans against a smooth frictionless post to which it is attached the string is attached to the ball such that a
a 96 g bullet is fired into a stationary block of wood m 505 kg the bullet imbeds into the block the speed of the
a 87kg block slides with an initial velocity of 166msec up a ramp inclined at 274 degrees with the horizontal the
a meter stick is rotated about the end labelled 000 cm therefore that the other end of the stick moves during an arc
discuss whether any work is being done by each of the following agents and if so whether the work is positive or
a hiker who weighs 637 n is strolling during the woods and crosses a small horizontal bridge the bridge is uniform
the sun emits electromagnetic waves including light equally in all directions the intensity of the waves at the earths
a weight lifter raises a 1057 n weight a vertical distance of 190 min a time interval of 215 s calculate the power
a boy of mass 487 kg is initially on a skateboard of mass 200 kg moving at a speed of 104 ms the boy falls off the
a 780-kilogram child starts from rest from the top of a frictionless slide that is 54 meters tall the bottom of the
an ideal heat engine operates at a thermal efficiency of 25 when the high temperature reservoir operates at a
two narrow slits are illuminated by a laser with a wavelength of 507 nm the interference pattern on a screen located x