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a top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top the
a wire has a resistance of 274 omega it is melted down andfrom the same volume of metal a new wire is made that is 3
the heating element of a clothes dryer has a resistance of123omega a voltage of 240 v is connected across the
two small positively charged spheres have a combined charge of5210-5 c if each sphere is repelled from the other by an
the mass of a disk is 05 kg and its radius is 15 cm calculate the moment of inertia for the disk if it is pivoted about
a 0150 t magnetic field b crosses thexy plane perpendicular to the x axis and at anangle of 650deg to the y axis a
two electrical charges q1 225 muc and q2 ndash675muc are located along the x-axisq1 is located at the origin q2 is
a cylindrical cistern constructed below ground level is 3 m in diameter and 2 m deep and is filled to the brim with a
a coil is placed in a changing magnetic field and an emf is induced what happens to the inducednbspemf if the rate of
a battery is connected in series with a27 omega resistor and a 15 mh inductor the maximum current in the circuit is160
a point source of light is submerged 358 m below the surface of a lake and emits rays in all directions on the surface
a child sits down on one end of a horizontal seesaw of negligible weight 178 m from the pivotpoint no one balances on
a farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1658 diopters since
a boy pulls a box with a mass of 30 kg with a force of 25 n at 30 deg angle in the north east direction
a prism whose cross section is shaped like an is osceles right triangle is made from a material with index of
a fountain consists of a large pool of water and a column of waterprojected upward by means of a pump the column has
electrocardiographs are often connected as shown in fig 19-55 the leads are said to be capacitively coupled a time
light rays traveling through air enters a piece of plexiglass at an angle of 33deg the index of refraction of
a lunch tray is being held in one hand as the figure illustrates the mass of the tray itself is 0247 kg and itscenter
an 78 g particlemoving with aninitial speed of 24 ms in the positive xdirection strikes and sticks to an 82 gparticle
on a roller coaster ride the totalmass of the cart - with passengers included - is 290 kg peakk is at 445 m above the
a moving 27 kg block collides with ahorizontal spring whose spring constant is 426nm the block compresses the spring a
an object that is 36 cm in front of a convex mirror has an image located 25 cm behind the mirror how far behind the
a middle-aged man starts to wear eye glasses with lenses of15 d that allow him to read a book held as close as25 rm cm
a block of mass 5kg is attached to a spring of 2000 nm and compressed a distance of 6 meters the spring is then