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to get to a concert in time a harpsichordist has to drive 123 miles in 203 hoursa if he drove at an average speed of
a small plastic ball of mass m 150 g is suspended by a string of length l 245 cm in a uniform electric field as shown
a train is moving parallel and adjacent to a highway with a constant speed of 23 ms initially a car is 57 m behind the
the circle inside the large square below has an area of 714 cm2 calculate the area of the large square note that the
a certain automobile manufacturer claims that its super-deluxe sports car will accelerate from rest to a speed of 396
a model rocket blasts off and moves upward with an acceleration of 13 ms2 until it reaches a height of 27 m at which
a certain source of soundwaves radiates uniformly in all directions at a distance of 17m from the source the intensity
a wooden raft has a mass of 55 kg when empty it floats in water density 100 kgm3 with 64 of its volume submerged what
an automobile engine takes in 4000 j of heat and performs 1100 j of mechanical work in each cyclea calculate the
electrons are injected into a chamber with a b field of 10t at a velocity of 107 ms the electrons will go into
if a bungee cord is stretched horizontally to a length of 26 the tension in the cord is 19 a transverse pulse on the
a charge 500 is placed at the origin of an xy-coordinate system and a charge -300is placed on the positive axis at
a harvest mouse can detect sounds as quiet as -10 suppose you are sitting in a field on a very quiet day while a
a passenger walks from one side of a ferry to the other as it approaches a dockpassengers velocity is 150 ms due north
a train traveling at v0 280 ms begins to brake by applying a velocity-dependent instantaneous acceleration av vu ms2
a spaceship in distress sends out two escape pods in opposite directions one travels at a speed v1 060c in one
a particle undergoes three successive displacements in a plane as follows 350 m southwest 450 m east and 600 m in a
an electron is at the origin and an ion with charge 5 e is at x16 nm find a point where the electric field is
the electric field on the axis of a uniformly charged ring has magnitude 360 knc at a point 56cm from the ring center
a charge of -10 microc is located at the origin a second charge of 26 microc is located at x 0 y 01 m and a third
a person on a rocket traveling at 050c with respect to the earth observes a meteor come from behind and pass her at a
the potential difference across a typical cell membrane is about 76 mv how much work is done on a singly ionized
a toy rocket starts at rest and is fired vertically the fuel burns for tine t1 157 s and the rocket rises with a
water has a mass per mole of 180 gmol and each water molecule h2o has 10 electronsa how many electrons are there in 378
the water jet of a fountain is let out at a speed of 80 fts and an angle of 60 degrees determine the radius of