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a 120-v motor has mechanical power output of 300 hp it is 800 efficient inconverting power that it takes in by
car headlights use concave mirrors theres a concave mirror in the back of the headlight socket and the actual light
light enters a container of benzene at an angle of 43circto the normal the refracted beammakes an angle of 27circ with
a sand mover at a quarry lifts 200e3 kg of sand per minute averticle distance of 120 m the sand is initially at rest
a continuous stream of electrons flows along a long straight paththrough a piece of laboratory equipment 5750e18 ofthem
an 836-mh inductor and a 622-microf capacitor are connected in series with agenerator whose frequency is 355 hz therms
a micrometer is connected to the movable mirror of aninterferometer when the micrometer is tightened down on athin
a steel wire of length l with a cross-sectionaldiameter d is wrappedover a light frictionless pulley wiht one end of
binoculars denoted as 7 x 50 have a total magnification of 7 times and objective lenses of 50- mm diameter what is the
a 300 kg hammer strikes a steel spike 230 cm in diameter while moving with a speed of 200 ms the hammer rebounds with
truefalse1 a cyclotron operates with a given magnetic field and at agiven frequency if r denotes the radius of the
a nozzle of inner radius 105 mm is connected to a hose of inner radius 802mm the nozzle shoots out water moving at 250
two objects moving with a speed vtravel in opposite directions in a straight line the objects stick together when they
a find the angular speed about the polar axis as well as the translational speed and acceleration of a point on the
a student ofmass m standsat one end of a long log of length l and mass m which is floating on the campuspond at right
at what time after the discharge begins is the energy stored in the capacitor reduced to half its initial
2kmno4 5h2so3 k2so4 2mnso4 2h2so4 3h2ocalculate the mass ofa sulphurous acid h2so3 required to react with 316 g of
the large blade of a helicopter is rotating in a horizontalcircle the length of the blade is 764 m measured from its
how many salt complexes would result if you treated racemic phenethylamine with racemic tartaric acid after treating
if your 1-phenylethylamine is found to have no optical rotation what is the ee of each mixture what percentage of each
calculate the ph of hydroxylamine at the equivalence point for titrating 0250 m solutions of each of the following
a person whose eyes are 17 m above the floor stands in frontof a plane mirror the top of her head is 014 m above her
compound a c6 h 14 gives three different monochlorides on photochemical chlorination one of these monochlorides is
suppose you have a concave spherical mirror with a focallength of 10 cm at what distance must an object be places if
a marble slides without friction in a vertical plane around theinside of a smooth 21 rm cm-diameter horizontal pipe the