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two children are playing a game in which they try to hit a small box on the floor with a marble fired from a
suppose a news report stated that starship enterprise had just returned from a 5 year voyage while traveling at 081ca
a cylindrical chamber containing an ideal diatomic gas is sealed by a movable piston with cross-sectional area a 00015
a golf ball of mass 0050 kg is at rest on the tee and has a velocity of 102 ms immediately after being struckif the
the frequency of a steam train whistle as it approaches you is 538hz after it passes you its frequency is 486hz how
a stretched string fixed at each end has a mass of 40g and alength of 800m the tension in the string is 49na determine
a child is playing by jumping on a bathroom scale the mass of the child is 31 kg and when he stands on a bathroom scale
in a single-slit diffraction pattern produced by electromagnetic radiation from a distant source passing through a slit
a 6-microf capacitor in series with a 2- resistor is charged with a 9-v battery for a long time by closing the switch
a venturi meter is a device for measuring the speed of a fluid within a pipe the drawing shows a gas flowing at a speed
starting from rest a constant force f 100 n is applied to the free end of a 45-rm m cable wrapped around the outer rim
a group of particles is traveling in a magnetic field of unknown magnitude and direction you observe that a proton
two steel wires of the same length one with radius r and the other with radius 4r are connected together end to end and
a u-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water both sides of
a garden hose of inner radius 11 cm carries water at 18 ms the nozzle at the end has radius 025 cm how fast does the
two converging lenses having focal lengths of f1 109 cm and f2 200 cm are placed d 500 cm apart the final image is
a small blob of putty of mass m12 g falls from the ceiling and lands on the outer rim of a turntable of radius r 20 cm
a 451- resistor and a 257-mh inductor are connected in series with an ac generator with an rms voltage of 200 v and a
a rod of 20-m length and a square 20 mm x 20 mm cross section is made of a material with a resistivity of 60 x 10 -8
a 98 kg board is wedged into a corner and held by a spring at a 500deg angle as the drawing shows the spring has a
a 100 kg object is attached to a horizontal spring the spring is initially stretched by 0500 m and the object is
two astronauts are at rest in outer space one 121 m from the space shuttle and the other 242 m from the shuttle using a
a wheel rotates without friction about a stationary horizontal axis at the center of the wheel a constant tangential
a 225 kg projectile fired with a speed of 109 ms at a 660 angle breaks into three pieces of equal mass at the highest
calculate the impulse experienced when a 66 kg person lands on firm ground after jumping from a height of 28m estimate