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a battery with emf e 15 v and internal resistance r 060 omega is used to power a motor the motor lifts a weight w 10
a battery with an emf of 106 v and internal resistance of 107 carries a positive current of 0520 a from its negative
a bathtub is knocked off a ledge 200m above a road and falls toward an unsuspecting man 175-m tall who is standing
1 two particles of positie charge q are fixed in place on the y-axis one at y d and the other at y -d write an
a bat strikes a 0145-kg baseball just before impact the ball is traveling horizontally to the right at 550ms and it
a basketball and a golf ball are moving toward each other each at 2 ms the balls then collide head-on if the basketball
a basket of water with total mass 12 kg is attatched to a rope which in turn is wound around a 0050-m radius cylinder
a 1300 kg wrecking ball hangs from a 14 m -long cable the ball is pulled back until the cable makes an angle of 260o
a 132 v battery is connected across points a and b in the figure shown below find the potential difference across the
basic facts the worlds deepest mine is 24 miles deep railguns can acheive a muzzle velocity of a projectile on the
a baseball pitching machine works by rotating a light and stiff rigid rod about a horizontal axis until the ball is
a car in an amusement park travels without friction on a vertical loop of 20 m radius calculate from what minimum
a baseball hit just above the ground leaves the bar at 27ma at 45o above the horizontalparta how far away does the
1 a 560kg block located on a horizontal floor is pulled by a cord that exerts a force f 115 n at an angle theta 285o
baryons have charges that are the result of a polynomial calculation of their building blocks quarkss fractional
a a hose is connected to a faucet and used to fill a 6-l container in a time of 31 s determine the volume flow rate in
a barber holds a small mirror behind a customers head at distance 50 cm from the back of the head the customer sits in
a banjo d string is 069 m long and has a fundamental frequency of 294 hza determine the speed of a wave or pulse on the
a 140 g mass on a 14-m-long string is pulled 74o to one side and released how long does it take for the pendulum to
a 140 kg rocket is moving radially outward from the earth at an altitude of 240 km above the surface with a velocity of
a 1420 kg car traveling east at 136 ms has a head-on collision with a 1980 kg car traveling west at 205 msa if the
a 144 muf capacitor is charged through a 127omega resistor and then discharged through the same resistor by
a ball is thrown vertically upward from the edge of a bridge 285 m high with an initial speed of 130 ms the ball falls
a ball is thrown upward at a speed of 245 ms and returns to the same height from which it was thrown the total time for
a ball rotates counterclockwise in a circle of radius 300 m with a constant angular speed of 800 radsec at t0 its