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a contact lens is made of plastic with an index of refractionof 148 the lens has an outer radiusof curvature of 197 cm
if the height of the water slide is h 32m and the persons initial speed at point a is 054ms what is the new horizontal
a small cylinder with mass m radius r01 mand moment of inertia 12 mr2 rolls up along acurved surface with an initial
a bullet of massm1 is fired horizontally with a speedv into the bob of a ballistic pendulum of massm2 find the maximum
a 19-kg block slides down a frictionless ramp the top of the rampis 15m above the ground the bottom of the ramp is 025m
a wheel of r20 m is mounted on a frictionless horizontal axisas shown in the figure a light cord wrapped around the
each railroad car has a mass of 62000 kg nine coupled railroad car moving with a speed of 28 ms collide and couples
a long straight conducting rod or wire carries a linearcharge density lambda of 20mucmthis rod is totally enclosed
a 876 kg drag race car accelerates from rest to 109 kmh in 0862 s what average force is exerted on the caranswer in
an 1865 kg airplane starts at rest on an airport runway at sea level a what is the change in mechanical energy of the
a child bounces a 56 g superball on the side walk the velocity change of the superball is from 24 ms downward to 18 ms
a 280 mu f capacitor is charged to 460 v and a375 mu f capacitor is charged to 525 vthese capacitors are then
object a is metallic and electrically neutral it is chargedby induction so that it acquires a charge of -3010-6c object
a barefoot field-goal kicker imparts a speed of 23 ms to a football initially at rest if the football has a mass of 024
figure below shows two very long straight wires in crosssection that each carry a current of 417 a directly out of
when the play button is pressed a cd accelerates uniformlyfrom rest to 495 revmin in 26 revolutions if the cd has a
a slide projector has a converging lens whose focal length is10500 mm a how far in meters from the lensmust the screen
the transmitting antenna for a radio station is 755 km fromyour house the frequency of the electromagnetic wave
a cylindrical conducting shell of radius rho4mm and negligible thickness forms the inner conductor of coaxial line the
spherical capacitor the plates of a sphericalcapacitor have radii 310 and 450 mma calculate the capacitanceb what must
a beam contains 84 x 108 doubly charged positiveions per cubic centimeter all of which are moving north with aspeed of
a fuse in an electric circuit is a wire that is designed to melt and thereby open the circuit if the current exceeds
during the 42 min a 69 a current is set up in a wire how many a coulombsand b electrons pass through any crosssection
a disk-shaped merry-go-round of radius 243 rm m andmass 185 rm kg rotates freely with anangular speed of0701 rm revsa
a tall tree is growing across a river from you you would like to know the distance between yourself and the tree as