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an organ pipe is open at one end and closed at the other the pipe is 15 m long assume the speed of sound in the pipe is
during a workout the football players at state u ran up the stadium stairs in 60 s the stairs are 150 m long and
a block of mass m1 175 kg and a block of mass m2 590 kg are connected by a massless string over a pulley in the shape
an 857-kg block slides with an initial speed of 164 ms up a ramp inclined at an angle of 273deg with the horizontal the
a racecar approaches the startfinish line of a race track with a speed of 100 ms a speaker called the ground speaker
when playing a game a 45 kg boy jumps vertically upward from the top of a wardrobe with a speed of 55 ms ignore small
a copper wire is 700 m long and has a cross-sectional area of 100 10-4 m2 this wire forms a one turn loop in the shape
compute the energy level vales such that lasing population inversion occurs between n2 and n3 energy level of the lyman
a 24-v battery is connected in series with a resistor and an inductor withr68andl66hrespectivelya find the energy
a flat coil enclosing an area of 012 m2 is rotating at 61 revs with its axis of rotation perpendicular to a 020 t
in a slow-pitch softball game a 0200 kg softball crossed the plate at 160 ms at an angle of 450deg below the horizontal
a 60 kg block is pushed 5m up a fricitonless incline to a height 1m above the ground how much work is done by the
a sphere of radius 100 cm floats in equilibrium partially submerged in water with its lowest point 500 cm below the
a 24 m long pendulum is released from rest when the support string is at an angle of 25deg with the vertical what is
a glider of mass 0155 is moving to the right on a frictionless horizontal air track with a speed of 0730 it has a
an archer pulls his bow string back 0440 m by exerting a force that increases uniformly from zero to 224 na what is the
the coefficient of static friction between the m 340 kg crate and the 350deg incline is 0300what minimum force must be
a circular loop of flexible iron wire has an initial circumference of 167 cm but its circumference is decreasing at a
a 4-turn coil 20cm in diameter is rotated at 20 revs about an axis perpendicular to a uniform magnetic field a
by holding a magnifying glass 32 from your desk lamp you can focus an image of the lamps bulb on a wall 18 from the
a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 180 ms the cliff
an explosion of a 100-kg bomb releases only two separate pieces the bomb was initially at rest and a 400-kg piece
a 7 kg penguin is sliding on his belly down a 23 degree icy slope what is the magnitude of the normal force determine
a person travels by car from one city to another with different constant speeds between pairs of cities she drives for
defibrillators are used to revive a person when their heart has stopped beating how do they work what care must the