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what is the electric force between a glass ball with 20 microc of charge and a rubber ball with-45 microc of charge
a 63-kg water skier is pulled up a 140deg incline by a rope parallel to the incline witha tension of 512 n the
lasers are classified according to the eye-damage danger they pose class 2 lasers including many laser pointers produce
an aqueous solution of a soluble compound a nonelectrolyte is prepared by dissolving 332 g of the compound in
if a measurement of an electrons energy takes 96 ns 96 times 109 s what is the minimum possible uncertainty in the
discuss thermometers absolute temperature thermal joints inthe bridges and thermostats in housesin this discussion
a laser produces an average power of 55 w in a light beam 10 mm in diametera find the average intensityb find the peak
a buffer that is 0210 m in acid ha and 0172 m in the potassium salt of its conjugate base ka has a ph of 466 what is
your university radio station has a 55 kw radio transmitter that broadcasts uniformly in all directions listeners
a 180 g copper bowl contains 185 g of water both at 200degc a very hot 300 gcopper cylinder is dropped into the water
solder is used in the electronics industry because it has a low melting point and can make durable electrical
a particle moves along the x axis its position varies with time according to the expression x 4t 2t 2 where x is in
youre planning to study in europe and you want a transformer designed to step 230 v european power down to 120 v needed
consider a buffer that is 0155 m in lactic acid and 0155 m in sodium lactate what is the ph of the buffer after the
the springs of a 1400 kg car compress 40 mm when its 68 kg driver gets into the drivers seat if the car goes over a
an oak barrel with a lid of area 020 m2 is filled withwater a long thin tube of cross-sectional area 50 x10-5 m2 is
what is the fractional decrease in pressure when a barometer is raised 35 m to the top of a building assume that the
the freezing point of ethanol c2h5oh is -1146 degrees celcuus the molal freezing point depression constant for ethanol
consider the double delta-function potentialvx -alpha delta x a delta x - a where alpha and a are
when the relative humidity is 49 and the temperature is 60degc what is the partial pressure of water vapor in the
the solubility of oxygen gas in water at 25 celcius and 10 atm pressure of oxygen is 0041 gl the solubility of oxygen
two small identical conducting spheres are placed with their centers 074 m apart one is given a charge of 12 10-8 c the
a 355 ml can od diet soda contains 55 mg of sodium how many gallons of diet soda must be consumed in order to ingest 10
a proton accelerates from rest in a uniform electric field of650 nc at some time later its speed is140 x 106 msa what
the intensity levels of two people holding a conversation are 60 db and 70 db respectively what is the intensity of the