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an explosion breaks an object into two pieces one of which has 15 times the mass of the other if 7900 j were released
the magnetic field in an electromagnetic wave has a peak value given by b 55 microt for this wave find each of the
blocks a mass 200 kg and b mass 1500 kg move on a frictionless horizontal surface initially block b is at rest and
a 160 kg fish swimming at 140 ms suddenly gobbles up a 450 kg fish that is initially stationary neglect any drag
two identical spaceships are traveling in the same direction an observer on earth measures the first to have speed 080c
a circular coil having 19 turns and a radius of r 192cm carries a current of 330a it is placed in a uniform magnetic
a catcher catches a 145 g baseball traveling horizontally at 360 ms how large an impulse does the ball give to the
the near point of a naked eye is 25 cm when placed at the near point and viewed by the naked eye a tiny object would
a typical adult ear has a surface area of about 210 10-3 m2 the sound intensity during a normal conversation is about
a bar of length 2cm slides along metal rails at a speed of 1cms the bar and rails are in a magnetic field of 2t
if the uncertainty in the energy of an excited state is a billionth of an electron volt 1 nev what is the half-life of
a 220-g bullet embeds itself in a 160-kg block which is attached to a spring of force constant 760 nmpart a if the
a horizontal water main with a cross-sectional area of 186 cm2 necks down to a pipe of area 578 cm2 meters mounted in
a square with sides of length 2m is perpendicular to a magnetic field of strength 10 t is rotated by 60 degrees in the
a square with sides of length 2m is perpendicular to a magnetic field of strength 10 t if the square is rotated by 60
a solid sphere m20 kg and r05 m is rolling without slipping on a horizontal surface at speed vcm43 ms when it reaches
a farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1734 diopters since
a plastic circular loop has a radius r and a positive charge q is distributed uniformly around the circumference of the
two masses are separated by 385m the mass of objects are 598kg and 735 kg how far is the center of mass of the
an object is solid throughout when the object is completely submerged in ethyl alcohol its apparent weight is 150 n
a see-saw board is supported at its center by a fulcrum a 25 kg person sits 80 cm from center a 15 kg person is sitting
a small glass bead has been charged to 30 nc a tiny ball bearing 30 cm above the bead feels a 18 times 102 n downward
the projection lens in a certain slide projector is a single thin lens a slide 239 mm high is to be projected so that
a mass of 125 kg is hanging by a steel wire 111 m long and 103 mm in diameter if the mass is pulled down slightly and
the rifle fires a bullet with the speed 300ms the target is sitting on a tree 100m away from the shooter the line of