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nichrome wire of cross-sectional radius 0791 mm is to be used inwinding a heating coil if the coil must carry a current
a 1105 kg automobile is pulled by horizontal tow line with a net force of 816 n what is the acceleration of the auto
the vibrational transition for h35cl occurs at 28856 cm-1 if d35cl has the same force constant where would the
a chick farmer decides to increase the size of her flock from500 chickens to 2000 chickens she must relieve her
you are working as a consultant on a video game designing abomb site for a world war i airplane in this game he
in spectrophotometry what is the theorywhy is there a linear relationship between i absorbance and concetration and ii
a 200-g block of copper at a temperature of 90 degreescelsius is dropped into 400 g of water at 27 degrees celsius the
a galvanonmeter has an internal resistance of 100 omega and deflects full-scale at 200 ma what size resistor should be
what is the the concentration of each ion present in the solution formed by mixing 390 g kcl in 750 ml of 0280 m cacl2
a fan turns at a rate of 900 rpm ie revmina find the angular speed of any point on one of the fan bladesb find the
a weather balloon has a volume of 750 l when filled with helium at 8 degrees c at a pressure of 380 torr what is the
a sled which has amass of m125kg is sitting on an icyhorizontal surface a rope attached to the front end of the
a vacuum cleaner is plugged into a 1200-v socket and uses 44 a ofcurrent in normal operation when the back emf
a sce and an indicator electrode were connected to a voltmeter all conditions were standard the observed cell emf at 25
the chemical 5-amino-23-dihydro-14-phthalazinedione better known as luminol is used by forensic scientists in analyzing
a pulley of 50cm radius on a motor is turning at 30 revsand slows down uniformly to 20 revs in 20s calculatea the
two resistors r1100 ohms and r2 200 ohms are connected inparallel across a battery the current through r1 is 0150
a 3000-kg spacecraft is in a circularorbit 1200 km above the surfaceof mars how much work must the spacecraft engines
a wheel of 40cm radius rotates on a stationary axle it isuniformly speeded up from rest to a speed of 900 rpm in a time
calculate the theoretical amount of cacl2 that would be required to change the temperature of 500 ml of water from 20c
part a methyl violet is an indicator that changes color over a range from ph00 to ph16 what is ka of methyl violetpart
a 53 db sound wave strikesan eardrum whose area is 47 multiplied by 10-5 m2a how much energy is absorbed by the eardrum
leadii forms soluble hydroxo complexes in excess base calculate the molar solubility of lead hydroxide yellow form at
if a 200 g ball is dropped from 100 meters what is its velocity just before it hits the ground what is its velocity
if 1676 ml of an aqueous solution of naoh reacts with 05683 g of khc8h4o4 how many moles of naoh reacted what is the