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an object is thrownhorizontally from the top of a cliff with a speed of 5 ms how many seconds after it is thrown is
how deep must you dive in water in order for the pressureexerted on you to be twice as much as the pressure exeprted on
1 the jeans instability occurs whena the pressure in a gascloud is less than its gravitational forceb the pressure in a
an object of mass m25kg is moving along a straightroad in a direction pointing 18o north of east a forcewhose magnitude
two identical pucks are on an air table puck a has an initialvelocity of 23 ms in the positivex-direction puck b is at
a small glider is placed against acompressed spring at the bottom of an air track that slopes upwardat an angle of 330
a 17 kg body is moving through space in the positive direction ofan x axis with a speed of 310 ms when due to an
the takeoff speed for a jet liner is 100 ms the mass of the airliner 30 x 103kg coefficient of friction between its
a tennis ball initially moves with a velocity of 280 ms horizontally to the right a tennis racketstrikes the ball
a bullet of mass 55 g is fired horizontally into a 21 kg wooden block at rest on a horizontalsurface the coefficient of
a portable electric heater is powered by a 45 v battery ithas four identical heating elements inside wired in series if
there are two light bulbs in a circuit powered by one battery one light bulb is a 100 watt light bulb and the other a
the linear momentum of a 1300 kg carincreased by 630times103 kg ms in137 s what is the magnitude of the constant force
a rubber ball of mass 375 g is dropped from a height of 180 m onto a floor thevelocity of the ball is reversed by the
two spheres are mounted on identical horizontal springs and rest ona frictionless table as in the drawing when the
a bullet of mass 63 g is fired horizontally into a 12 kg wooden block at rest on a horizontal surface the coefficient
a 60-kg object undergoes an acceleration of 20 ms2what is the magnitude of the resultant force acting
in the absence of a nearby metal object the two inductancesla and lb in a heterodynemetal detector are the same and the
two packing crates of masses m1 100 kg and m2 600 kg are connected by a light string that passes over a frictionless
determine the reading of the constructed ammeter inaperes assuming that the deflection represents 075 amperehint use
a crane lifts a 10000 kg pile driver to a height of 10 metersevery cycle and then releases it to a free fall and drive
a laptop computer communicates with a router wirelessly bymeans of radio signals the router is connected by
a lead bullet having a velocity magnitude of 360mscrashes into a steel wall half of the bullets kinetic energy goesinto
in an experiment of combustion a mixture of gasoline and oxygen ina pump at constant volume surrounded by water during
a parallel-plate capacitor in air has circular plates of radius 25cm separated by 13 mm charge is flowing onto the