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you have designed a rocket to be used to sample the localatmosphere for pollution it is fired vertically with aconstant
at a rock concert the engineer decides that the music isnt loud enough he turns up the amplifiers so that the amplitude
richard is driving home to visit his parents 140 mi of the trip are on the interstate highway where the speed limit is
a student drops a ball from a window 35m above the sidewalk how fast is it moving when it hits the
an airplane starts from rest and accelerates at a constant 300 ms2 for 300 s before leaving the ground how far did move
the normal range of hearing is about 20 to 20000 hz assume that your hearing range is 26 to 18500 hz use 340 ms as the
a juggler throws a ball from height of 0950 m with a vertical velocity of 375 ms and misses it on the way down what is
a transverse wave of frequency 14 hz propagates down a string two points 15 cm apart are out of phase by pi6a what is
a car is approaching a reflecting wall a stationary observer behind the car hears a sound of frequency 790 hz from the
a spherical source radiates sound uniformly in all directions at a distance of 13 m the sound intensity level is 80 dba
a loudspeaker at a rock concert generates 10-2 wm2 at 220 m at a frequency of 10 khz assume that the speaker spreads
a 5 m long string has a mass of 110 g and is under a tension of 900 n what is the speed of a transverse wave pulse on
a jet flying at 128 ms banks to make a horizontal circular turn the radius of the turn is 3810 m and the mass of the
a 1720 hz pure tone is played on a stereo in an open field a person stands at a point that is 4 m from one of the
the amplitude of an oscillator decreases to 888 of its initial value in 205 what is the value of the time
two 100 kg masses are hanging from the ceiling of an elevator that is accelerating upwawrd at 200 ms what is the
a golf ball is sent flying at an angle of 35 degrees for a total flight time of 5 seconds landing at the same level
at some instant the velocity components of an electron moving between two charged parallel plates are vx15105 ms and
when a certain 12-v storage battery is charged a total of 105 c degrees is transferred from one set of its electrodes
a television set connected to a 120 outlet consumes 73 of power how much current flows through the
a block has a mass of 120 kg and is attached to a spring with spring constant of 500 nm the damping force is given by
a policeman is chasing a speeding car with a seed of 160 kmhr the speeding car is moving with a speed of 120 kmhr if
in a freight yard a train is being made up an empty freight car coasting at 10 ms strikes a loaded car that is
a particle of charge 496 is placed at the origin of an xy-coordinate system and a second particle of charge -199 is
two small plastic spheres are given positive electrical charges when they are a distance of 148cm apart the repulsive