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the security alarm on a parked car goes off and produces a frequency of 1020 hz the speed of sound is 343 ms as you
the time of diffusion of lighter gas is 2 and heavier is 3 if the mass of lighter one is 8 find out the mass of
superman leaps in front of lois lane to save her from a volley of bullets in a 1-minute interval an automatic weapon
the thrust of a rocket is a gravitational force acting on the rocket the force of the exiting fuel gases on the rocket
a car is traveling along a road and its engine is turning over with an angular velocity of 190 rads the driver steps on
give three examples of moisture diffusion and explain how to prevent moisture diffusion in each
an organization that values employees who can assume new responsibilities quickly enabling it thereby to readily
a nearsighted person wears glasses to correct the problem the lenses in the glasses have a focal length of -411 cm and
a viscometer consists of two concentric cylinders 102 cm and 106 cm in diameter a particular liquid fills the space
a student is reading a lecture written on a blackboard the lenses in her eyes have a refractive power of 5611 diopters
a uniform 20-kn board of length l has two objects hanging from it 300n at exactly l3 from one end and 400 n at exactly
a woman can read the large print in a newspaper only when it is at a distance of 63 cm or more from her eyes a is she
1 water from a 5-ml pipet was drained into a weighing bottle whose empty mas was 9974 g to give a new mass of 14974 g
two billiard balls of equal mass undergo a perfectly elastic head-on collision if one balls initial speed was 200 ms
a narrow tube open at one end has varibale length when a vibrating tuning fork is held near one end the sound intensity
write a clear and complete answer to the following question your answer should be directed towards a first year
a string vibrates according to the equation y5sinpix3 cos40pit where x and y are in centimeters and ti is in seconsa
1 given that one can do 353 kj of work with both arms while lieing on a bench how high can you lift a mass of 90 kg2 a
a meter stick of weight w leans away from a wall the 0 cm line is against the wall at the floor and it makes an angle
sound is passing perpendicularly through an open window whose dimensions are 11 m x 075 m the sound intensity level is
the density of a sample of an unknown solid is 169 gcm3 convert this density to to units of
what is the buoyant force on a helium balloon in air if the balloon is spherical with diameter 285cmfb
a cart with mass 470 g moving on a frictionless linear air track at an initial speed of 18 ms undergoes an elastic
ribosomes have three trna bind sites what are they called describe the elongation phase of prokaryotic translation and
suppose the masses of stars are distributed according to fmdm m-2 dm assume you can use the luminostiy mass relation l