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a spaceship of rest length 192 m races past a timing station at a speed of 0780ca what is the length of the spaceship
the mean lifetime of stationary muons is measured to be 22 micros the mean lifetime of high-speed muons in a burst of
a device used in radiation therapy for cancer contains 310times10-1 g of cobalt 2760co 599333819 u the half-life of
on a warm summer day 29c it takes 450s for an echo to return from a cliff across a lake on a winter day it takes 490s
a hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of
a 906-kg climber is scaling the vertical wall of a mountain his safety rope is made of a material that when stretched
vector r707msti707mst-490ms2t2j is the postition of a projectile as a function of time the x-direction is horizontal
a newly discovered planet has a mean radius of 2020 km a vehicle on the planets surface is moving in the same direction
an astronaut returning to earth after a long trip is cruising earthward at 712times107ms she launches a package toward
water has the following thermodynamic constants 1 specific heat liquid 418 jg degc solid 209 jg degc gas 189 jg
a steel guitar string 40 cm long has a mass density of 15 gm and the tension is 500 nfind the frequency of the
the electric output of a power plant is 790mw cooling water flows through the power plant at the rate 0600108 lhr the
you place your lunch leftovers in the refrigerator suppose the refrigerator needs to remove 15060e4 j of thermal energy
the water in a deep underground well is used as the cold reservoir of a carnot heat pump that maintains the temperature
a diving bell is a tube or pipe that is closed at the top and open at the bottom it is lowered into a body of water
a motorist pulls into a gas station and uses a pressure gauge to check one of the tires on her car the gauge reads 3013
in a circus an elderly performer thrills the crowd by catching a canon ball shot at him the cannon ball has a mass of
two manned satellites approaching one another at a relative speed of 0100 ms intend to dock the first has a mass of
a gas while expanding under isobaric conditions does 494 j of work the pressure of the gas is 157e5 pa and its initial
the figure shows two blocks connected by a light cord over a pulley this apparatus is known as an atwoods machine there
a proton with a speed of 25 times 106 ms is shot into a region between two plates that are separated by a distance of
particle 1 and particle 2 have masses of m1 11 times 10-8 kg and m2 63 times 10-8 kg but they carry the same charge q
suppose that an ion source in a mass spectrometer produces doubly ionized gold ions au2 each with a mass of 327 times
gas is confined in a tank at a pressure of 104e6 pa and a temperature of 144degc if half of the gas is withdrawn and
a cylindrical glass of water h2o has a radius of 442 cm and a height of 118 cm the density of water is 100 gcm3 how