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a marble that has a radius of 10 mm is placed at the top of a globe of radius 080 m when released the marble rolls
1 a spring experiences a simple harmonic movement if it starts its movement when the spring is extended 20 cm
an object weighing 20 n moves horizontally toward the right a distance of 50 m what is the work done on the object by
a ball is thrown straight upward how does the sign of the work done by gravity while the ball is traveling upward
you live on a coastline and a large hurricane may strike nearby you measure the air pressure over several hours and see
1 a hydrogen atom has its electron in thenbspnnbspnbsp2nbsplevel the radius of the electrons orbit in the bohr model
a pendulum consists of a sphere of mass 13 kg attached to a light cord of length 109 m the sphere is released from rest
an ore car of mass 41000 kg starts from rest and rolls downhill on tracks from a mine at the end of the tracks 22m
for a lab called acceleration reference frames we are asked to find centripetal acceleration for the angular velocities
two blocks with masses m1 2 kg and m2 9 kg are attached over a pulley with mass m 3 kg hanging straight down as in
a particle attached to a spring withnbspknbsp 48 nm is undergoing simple harmonic motion and its position is described
derive formula for elastic collision v1initialv1finalv2finalv2initialplease give an explanation under every
to be rescued from the roof of a burning building a 82-kg man must be able to jump straight up and catch hold of a rope
at what height above the surface of saturn is the acceleration due to gravity half its surface value use the equatorial
according to that law the magnitude of the gravitational force fg12 between two objects of masses m1 and m2 separated
what are some of the limitations of science and the scientific method what other ways can we learn about the world
a long evacuated tube has a cross-sectional area of 240 times 10-3 m2 and is permanently sealed at one end but can be
if increasing the cost of one of the parts causes the fill rate for that part to go down while the fill rate for other
a rod made from a particular alloy is heated from 226 degc to 121 degc its length increases by 585 x 10-4 m the rod is
a pulsed laser emits light in a series of short pulses each having a duration of 300ms the average power of each pulse
a viewing screen is separated from a double slit by 12m the distance between the two slits 0030 mm the monochromatic
a 544 gram silver bullet traveling at 926 mph strikes an armor plate and comes to a stopnbspif all its energy is
a person fixing a car momentarily leaves one end of an aluminum wrench on a hot part of the engine the hot part of the
at some instant of time the activity of a sample of radioactive material is 41 microci if the sample contains 11 times
a test tone used on a radio has a frequency of 958 hz what is the wavelength of this sound in air at averagenbsproom