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large conventional electromagnets use water cooling to prevent excessive heating of the magnetic coils a large
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
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
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
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 meterstick moving at 0888c relative to the earths surface approaches an observer at rest with respect to the earths
a simple pendulum has a length l and a mass m at its highest point the pendulum mass is 025l above its lowest point
a sled rests at the top of a 25deg slope 80 m in length if k 25 and the velocity at the bottom of the incline is 20 ms
it is claimed that if a lead bullet goes fast enough it can melt completely when it comes to a halt suddenly and all
a loop antenna of area a 187 cm2 and resistance r 406 microo is perpendicular to a uniform magnetic field of
the center of mass for a 1 meter stick is at 497cm when placed on an fulcrum now move the fulcrum 20cm to he left from