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two pianos each sound the same note simultaneously but they areboth out of tune on a day when the speed of sound is 343
you push a 325-n trunk up a 200 degree inclined plane at aconstant velocity by exerting a 211-n force parallel to the
you pull your 18-kg suitcase at constant speed on a horizontalfloor by exerting a 43-n force on the handle which makes
suppose the pear is released from a height of 6 m above robins arrow the arrow is shot at a speed of 30 ms and the
a walkway suspended across a hotel lobby is supported at numerouspoints along its edges by a vertical cable above each
neutron stars such as the ones at the center of the crab nebulahave about the same mass as our sun but have a
a steel wire of length 17 m anddiameter 110 mm is joined to analuminum wire of identical dimensions to make a composite
the plate separation of a charged capacitor is 006104 m aproton and an electron are released from rest at the
an empty parallel plate capacitor is connected between theterminals of a 156-v battery and charges up the capacitor is
a 40kg mass is attached to a spring that has a spring constant k 2500 nm and is resting on a frictionless
an airline pilot pulls her 120 kg rollaboard suitecase alongthe groung with a force of 250 n for 100 m the handle she
an airplane has a mass of 3 104 kg and takes off under theinfluence of a constant net force of 35 000 n what is the
the period of a pendulum is measured to be 300sin the non-moving frame of the pendulum what is the periodas measured by
a projectile of mass 0868 kg is shot straight up with an initialspeed of 286 ms a how high would it go ifthere were no
a cart of mass m moves with a speed v on a frictionless air track and collides with an identical cart that is
the graph shows how the force component f cos along the displacement varies with themagnitude s of the displacement
the aorta is a major artery rising upward from the left ventricle of the heart and curving down to carry blood to the
a ball is tossed from an upper-story window of a building theball is given an initial velocity of 8 m2 at an angle of
in an exercise to heat up some cold hard cash a coin with a massof 625 g that has been kept in the freezer at a
an aluminum pan with 150 kg of water at an initial temperature of17 deg-c is placed on an electrical heater suppose it
you throw a baseball straight upward if air resistance is notneglected how does the time required for the ball to go
when a resistor is connected across the terminals of an ac generator 112 v that has a fixed frequency there is a
the space between two concentric conducting spherical shells of radii b 170 cm and a 120 cm is filled witha substance
a 100 g block is launched by compressing a spring of constant k200nm a distance of 12 cm the spring is mounted