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the two vectors and in the figure below have equal magnitudes of 110 m and their angles are 1 30deg and 2 95dega find
a model rocket fired vertically from the ground ascends with a vertical acceleration of 40 ms2 for 58 s its fuel is
the icebox on a sailboat measures 60 cm x 60 cm x 60 cm the contents of this icebox are to be kept at a temperature of
two small spheres spaced 350 apart have equal charge how many excess electrons must be present on each sphere if the
a negative charge of -0550 exerts an upward 0225 force on an unknown charge 0285 directly below itpart a what is
a ball with a mass of 073 kg travelling at 4 ms strikes a second ball elastically at rest with a mass of 047 kg what
carol and robin share a house to get to work carol walks north 25rm km while robin drives west 80rm km how far apart
a 300 hp car engine can deliver that maximum power at 6000 rpm what is the engines torque at that speed show your
a 500-g bullet is shot straight upward with a muzzle speed of 350 ms find the maximum height the bullet can reach by
a 1600-kg car starts from rest to reach 600 milesh in 650 sa how much work is done by the engine during the
a what is the total negative charge in coulombs of all the electrons in a small 105 gram sphere of carbon one mole of
an object slides down a 30o angle slope from rest at a height of 150 m the coefficient of kinetic friction between the
a dipole consists of charges eand -eseparated by076nm it is in an electric fielde24times 104nca what is the value of
two small positively charged spheres have a combined charge of 502times10-5 c if each sphere is repelled from the other
an electron with speedv0225times 106ms is traveling parallel to a uniform electric field of magnitudee116times 103nca
a styrofoam ball of mass 0120 g is placed in an electric field of 6000 nc pointing downward what charge must be placed
a parallel plate capacitor has a capacitance of 70 microf when filled with a dielectric the area of each plate is 10 m2
a motor is connected to a solid cylinder with a diameter of 12m and a mass of 51kg a massless rope is attached to the
a cat drops from a shelf 45ft above the floor and lands on all four feet his legs bring him to a stop in a distance of
a sphere of radius a in free space is nonuniformly charged over its surface such that the charge desity is given by
four small charged bodies of equal charges q-1nc are placed at four vertices of a rectangle with sides a4cm and b2cm
bats use echolocation to determine their distance from objects they cannot easily see in the dark the time between the
at the time of this books printing the us national debt is about 10 trillion note before doing these calculations try
a piece of metal weighs 536 n in air 350 n in water and 422 n in an unknown metal the density of the metal is 288 x 102
the tropical year the time from vernal equinox to the next vernal equinox is the basis for our calendar it contains