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two identical point charges q 150 x 10-6 c are fixed at opposite corners of a square whose sides have a length of 0570
a cart is propelled over an xy plane with acceleration components ax 61 ms2 and ay -17 ms2 its initial velocity has
jack and john are standing 6m apart from each other playing soccer jack kicks the ball to john and john kicks it back
two equal positive charges of magnitude q1 q2 55 nc are on the y axis at y1 3 cm and y2 -3 cma what is the
a ball is launched directly upward from ground level with an initial speed of 20 ms air resistance is negligiblea how
the air passes through a large-diameter glass tube then through a small-diameter tube and nally through a
a an electron is moving east in a uniform electric field of 148rm nc directed to the west at point a the velocity of
it is believed that the universe began with a big bang about 17 billion years ago neglecting the expansion of the
two identical cars collide head-on each traveling at 80 kmhr suppose that all their kinetic energy is transformed into
a bolt comes loose from underneath an elevator that is moving upward at a speed of 45 ms the bolt reaches the bottom of
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
a ball is thrown so that its initial vertical and horizontal components of velocity are 60 ms and 15 ms respectively
a match that was just blown out was dropped into a 2 liter bottle and the cap put onexplain how the smoke helped the
two identical point charges are fixed to diagonally opposite corners of a square that is 0495 m on a side each charge
a 10 kg box is being pushed up a slippery ramp at and angle of 10 degrees the coefficient of friction between the box
a river with long straight parallel sides 10 km a part flows from north to south at 3 ms a swimmer enters the river on
a car is driving directly north on the freeway at a speed of 106 kmh and a truck is leaving the freeway driving 91 kmh
during a car crash a 65kg persons head goes from traveling at 50kmh-1 to stationary in 015 sa what is the magnitude of
in order to freeze an ice cream mixture its temperature must be brought below approximately -3degc explain how
a jet with mass m 1300000 kg jet accelerates down the runway for takeoff at 23 ms2what is the net vertical force on
in order to drink from your glass you must first need to lift it to your mouth as you begin to lift your 020kg glass of
the graph above shows the speed of a car traveling in a straight line as a function of time the car accelerates
a cylindrical vessel 16 feet in diameter and 15 in height is constructed to withstand a maximum internalpressure of 500
a pair of speakers separated by 0700 m is driven by the same oscillator at a frequency of 655 hz an observer originally
a ballon contains 2 lbs of helium at 70 degrees f if the pressure of the ballon is 65 psia what is the volume of the