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a positive charge q is placed at the origin identical charges q are located at plusmna on the x-axis if the charge q is
an aluminum wire has the same resistance as a copper wire of the same length find the ratio of the aluminum wires
three metal fishing weights each with a mass of100x102g and at a temperature of 1000ocare placed in 100x102g of water
a cannonball is fired from a gun and lands 740 meters away at atime 20 secondswhat is the x-component and y-component
the capacitance of a cylindrical capacitor can be increased bya decreasing both the radius of the inner cylinder and
a 300-gbullet is fired into a 140-kg block suspending from a support rodby a thin wire after the bullet becomes
a stonewith a mass of 240-kg is released from rest and falls toward earth near the surface of the earth use the
a thin film of polystyrene is used as an antireflective coating for fabulite known as the substrate the index of
four identical charges 2uc each are brought from infinity and fixed to a straight line the charges are located 4 m
a spherical mirror is polished on both sides when used as a convex mirror the magnification is 15 what is the
a player kicks a football giving it an initial velocity of 12 ms w at an angle of 40 degrees up from the horizontal a
an olympic long jumper jumps 804m reaching a height of 080 m halfway through his jump what was his velocity as he left
two particles collide and stick together to form a new particlefirst particle has a rest energy e0 and a kinetic energy
an emf of 20 v maximum and frequency 18 hz is applied to a24-mf capacitor what is the maximum current in the
an ac generator is connected across a single circuit element and supplies a peak voltage of 250 v the peak current
the brightest star in the night skyis sirius which is at a distance of 830times1016 mwhen we look at this star how far
a 660 kg astronaut is stranded at a distance of 120m from his ship in free space in order to get back to the ship he
in an experiment designed to measure the speed of light a laser is aimed at a mirror that is 490 km due north a
consider an elastic collision ignoring friction and rotationalmotion a queue ball initially moving at 29 ms strikes a
a 200-kg package is released ona 531o incline 400 m from a longspring with force constant 120 nm that is attached at
an automobile has a vertical radio antenna 11m long theautomobile travels at 794 kmh on a horizontal road where
a 743 turn circular loop coil 126 cm in diameter is initially aligned so that its axis is parallel to earths magnetic
a positron and an electron each of mass 91 x 10-31kg are in the same general vicinity and have very small initialspeeds
two masses undergo a front-to-back collision the mass m has aninitial velocity 2v0 and the mass 2m has an initial
a blimp is initially at rest hovering when at t 0 the pilot turns on the motor of the propeller the motor cannot