A block of weight 45 n is at rest on a horizontal table an
A block of weight 4.5 N is at rest on a horizontal table. An upward vertical force of 2.2 N is applied to the block by means of a string. What is the magnitude of the force exerted by the block on the table top?
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a beam of light in air strikes a slab of glass n 156 and is partially reflected and partially refracted find the angle
a proton travels with a speed of 29times106 ms at an angle 44 degrees with a magnetic eld of 099 t pointed in the y
the critical angle for a certain liquid-air surface is 438 degrees what is the index of refraction of the
at the equator near earths surface the magnetic eld is approximately 645 microt northward and the electric eld is about
a block of weight 45 n is at rest on a horizontal table an upward vertical force of 22 n is applied to the block by
a singly charged positive ion has a mass of 216 times 10-26 kg after being accelerated through a potential difierence
an inductor l 400 mh a capacitor c 443 microf and a resistor r 500 are connected in series a 540-hz ac generator
a plane is flying horizontally with speed 158 ms at a height 5810 m above the ground when a package is dropped from the
a 710 kg skier is pulled up a frictionless ski slope that makes an angle of 150 deg with respect to the horizontal by
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