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a river descends 20 m through rapids the speed of the water is 30 ms upon entering the rapids and 11 ms upon leaving
a rifleman fires a round with a muzzle velocity of 300 ms from a height of 15 m at a target on a wall 200 m away and 3
the right field wall at yankee stadium is 96m from the home plate the outfield fence is 257m high when a home run is
a rigid massless rod is rotated about one end in a horizontal circle there is a particle of mass m1 attached to the
the balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum
an rl circuit is given below as a resistor and an inductor in series with a batterywhen the switch is in position b for
the rlc circuit below is being driven by an ac source with a frequency of 4777 hz resulting in a maximum current imax
an rlc series circuit has a 100 komega resistor a 150 muh inductorand an 800 pf capacitora what is the impedance at 120
in the rlc series circuit shown the amplitude of the source is em 200 v operating at a driving angular frequency wd
a eric is twirling a ball of mass m 0150 kg attached to a lightweight stung in a vertical circle if the total energy of
the rms current in the circuit below is shown as a function of the frequency of the driving emf capacitor c 0250muf
two 670-g arrows are tired in quick succession with an initial speed of 800 ms the first arrow makes an initial angle
a block is attached to a spring and the block makes contact with a frictionless surface sketch a graph of the potential
karen and randy are playing with a toy car and track they set up the track on the floor as shown in figure where the
the rms speed of o2 is 1200ms at a given temperaturea is the rms speed of h2o at this temperature greater than less
a rock of mass 50 kg is falling through the air an altitude if 200m is moving at 10ms when it passes 100m in altitude
a 150-kg box rests atop a massless vertical spring with k 4250 nm that has been compressed by 150 cm from its
a rocket has iniistal mass 120kg and two-thirds of this mass is fuel the air resistance force is given by f-05v where v
a game booth at a carnival invites contestants to strike a softball affixed to the bottom end of a lightweight stick
a block is hung from a vertical spring the sprint stretches h 00650 m as shown for a particular instant in time in
a rocket with a mass of 20x106 kg is designed to take off from the surface of the earth by burning fuel and ejecting it
a rocket has a maximum acceleration in any direction of 5 ms2 it is traveling at 60 ms towards the space station how
a rocket sled for testing equipment under large accelerations starts at rest and accelerates according to the
a beam of light in air strikes the surface of a transparent medium of index of refraction n 150 at an angle to the
a stellar black hole may form when a massive star dies the star collapses down to a single point our sun will not