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an electric clothes dry operates on a voltage of 220v and draws a current of 20a how long does the dryer take to dry a
a 1800 kg truck traveling north at 33 kmh turns east and accelerates to 50 kmha what is the change in the trucks
a camera with a 700-mm lens can focus on objects located from 140 m to an infinite distance away by adjusting the
a cylindrical electromagnet contains a uniformly magnetized core having a magnetization of 15 x106 am surrounded by a
a dissecting microscope is designed to have a large distance between the object and the objective lens suppose the
an isolated conductor has net charge 10 x 10-6 c and a cavity with a point charge q 3 x 10-6 c what is the charge on
a silver wire has resistivity 188 times 10-8 middotm and a cross-sectional area of 580 mm2 the current in the wire is
a uniform 13-kg rod that is 086 m long is suspended at rest from the ceiling by two springs one at each end both
use le chateliers principle to explain why the buffer prevents large changes from occuring in ph wheni an acid enters
a high-pass rc filter is connected to an ac source with a peak voltage of 100 v the peak capacitor voltage is 60 v what
at one point in a pipeline the waters speed is 295 and the gauge pressure is 380times104 find the gauge pressure at a
the spin cycles of a washing machine have two angular speeds 437 revmin and 641 revmin the internal diameter of the
two small metallic spheres each of mass m 040 g are suspended as pendulums by light strings from a common point as
at body temperature 37 c ka for aspirin equals 3 x10 - 5if two aspirin tablets each having a mass of 325 mg are
the solubility product for znoh2 is 30x10- 16 the formation constant for the hydroxo complex znoh4 2- is 46x 1017 awhat
how many microliters of 1000 m naoh solution must be added to 2500 ml of a 01000 m solution of lactic acid hc3h5o3 to
if a camera with a 60 mm lens is to resolve two objects that are 30 mm from each other and both objects are 40 m from
the lenses used in a compound microscope have powers of 90 d and 60 d if a total magnification of -250 x is desired
a helium neon laser wavelength 6328 nm is directed at a double slit plate on a screen 137 meters away there is a
find the ph during the titration of 2000 ml of 01350 m benzoic acid c6h5cooh ka 63 multiplied by 10-5 with 01350 m
what is the buffer-component ratio pr - hpr of a propanoate buffer that has a ph of 557 ka of hpr 13 multiplied by
in 1980 over san francisco bay a large yo-yo was released from a crane suppose the yo-yo was 135 kg and it consisted of
certain fish such as the nile fish gnathonemus concentrate charges in their head and tail thereby producing an electric
the c note of the c-major scale on a piano has a fundamental frequency of 264hz and the a note has a fundamental
a biochemist needs 750 ml of an acetic acid-sodium acetate buffer with ph 450 solid sodium acetate nac2h3o2 and