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four point charges of magnitude 39 microc are at the corners of a square of side 3 ma find the electrostatic potential
the left plate of a parallel plate capacitor carries a positive charge q and the right plate carries a negative charge
all of the common noble gases are mono atomic and low boiling their boiling points in degc are ne-245 ar-186kr-152 and
a pitcher pitches the ball m 150 g at 403 ms the batter makes contact with the ball for 0001 s causing the ball to
how many grams of oxygen are in 450x 1023 molecules of
a 10000 kg empty railroad car moving at 3 ms collides with a loaded railroad car weighing 196000 n and couples with it
outer space is filled with a sea of photons created in the early moments of the universe the frequency distribution of
if 0208g of an unknown salt of oxalate ion requires 25ml of 002 m mno4- solution calculate the molar mass and write the
a pendulum consists of a mass m 0080 kg hanging from a flexible string of length l the string is very thin very light
a piece of moon rock reads 3261 n on a scale when in air but 2074 n in a fluid having a density of 870 kgm3 what is the
a certain waffle iron is rated at 066 kw when connected to a 120-v sourcea what current does the waffle iron carryb
at a tea party a coffeepot and a teapot are placed upon the serving table the coffeepot is a shiny silver-plated pot
a mass on a spring vibrates in simple harmonic motion at a frequency of 40 hz and an amplitude of 80 cm if a timer is
a motor has an internal resistance of 12 ohms when running the motor has a back emf of 30 v and draws a current of 40 a
combining aqueous solutions of bai2 and na2so4 affords a precipitate of baso4 which ions isare the spectator ions in
a teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a
water flows through two garden hoses the large diameter hose is connected to the end of the small diameter hose let the
100 ml of 0150 m acid ha are mixed with 100 ml of 00800 m naoh calculate the titration constant kt of the resulting
a sample of aluminum metal absorbs 986j of heatupon which the temperature of the sample increases from 232 c to 395 c
assume that an esterification reaction is done using 010 moles of a carboxylic acid and 1 moles of an alchohol what is
jerry applies a force of 155 n to the propeller the distance of the from where the force was applied to the axis of
potassium hydroxide is used to precipitate each of the cations from their respective solution determine the minimum
a frictionless spring of spring constant 500 nm has one end attached to a vertical wall and the other end to a block of
1 the molar mass of bano3 is2 consider the following reaction 3 no2 h2o-2hno3 no what volume of water is needed to
the pressure in an automobile tire is usually quoted in the united states in pounds per square inch lbin2 and in a