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in europe surveyors often measure angles in grads there are 100 grads in one-quarter of a circle how many grads are
a heat pump has a coefficient of performance of 385 and operates with a power consumption of 691 103 wa how much energy
a laserpointer has a beam intensity of 55 wm2 and a beam radius of 21 mm a first grader attempts to use it to move a
why do you need to keep a mixture of nabh4 and meoh in ice bath write down equation and explain why you have to put in
a playground merry-go-round has a radius of 30 m and a rotational inertia of 600 kgmiddotm2 it is initially spinning at
a heat pump is essentially an air conditioner installed backward it extracts energy from colder air outside and
an ideal carnot freezer in a kitchen has a constant temperature of 263 k whereas the air in the kitchen has a constant
a a laser beam with wavelength 6328 aring is incident normal to the plane of a diffraction grating the grating has
which compound has the higher barrier to rotation about the central c-c bond 23-dimethylbutane or 223-trimethylbutane
a copper wire is 600 m long and has a cross-sectional area of 200 10-4 m2 this wire forms a one turn loop in the shape
the force vector a has a magnitude of 980 newtons n and points due east the force vector b has a magnitude of 111 n and
each day the human heart takes in and discharges about 7500 l of blood if the heart does 140 kilojoules kj of work in
draw both chair conformations of the following structure and label which one is more stable draw the two possible
a 220 kg child is riding a playground merry-go-round that is rotating at 400 rpm what centripetal force must she exert
trimethylamine ch33n has a kb 74x 10-5 what is the percent dissociation of a 015 m solution of this base in
a sphere of copper that has a radius of 5 cm is compressed uniformly by a force of 30 108 n calculate the change in
a satellite of mars called phobos has an orbital radius of 94 106 m and a period of 28 104 s assuming the orbit is
a square wire loop 110 cm on each side carries a clockwise current of 160 apart a find the magnitude of the magnetic
a calculate the freezing point of a solution of 234562g of sucrose c12h24o12 dissolved in 55000g of water for water
water flows through a horizontal tube that is 350 cm long and has an inside diameter of 120 mm at 0400 mls find the
a non-conducting charged sheet and a non-conducting sphere radius b are arranged as shown in the figure the right-most
a calculate the molar solubility of mercury i bromideb i2g br2glt---gt2ibrg kc87 x10 to the second at 150 degrees
an elephant that has a mass of 7000 kg evenly distributes her weight on all four feeta if her feet are approximately
benzaldehyde is easily oxidized by air and produces a white crystalline material what is the name of this oxidation
a flywheel comprises a uniform circular disk with a mass of 1010 kg and a radius of 11 m it rotates with an angular