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when measuring the specific heat of a metal why is it best to use the minimum amount of water needed to cove the metal
as soon as a traffic light turns green a car speeds up from restto 490 mih with constantacceleration 700 mih-s in
in the bohr model the electron is imagined to move in a circular orbit about a staionary proton if the speed of the
a 210-kg block is suspended from a springwith a spring constant of 3800 nm a0070-kg bullet is fired into the block from
you are driving into st louis missouri and in the distance yousee the famous gateway-to-the-west arch this monument
two pianos each sound the same note simultaneously but they are both out of tune on a day when the speed of sound is
write balanced equations that described the formation of thefollowing compounds from elements in their standard states
an auditorium measures 350 m multiplied by 250 m multiplied by 900 m the density of air is 120 kgm3a what is the volume
calculate the percent error in your hesss law enthalpy value -686 kjmol the accepted textbook value is
the two 050-kg weights of a cuckoo clock descend 15m in athree-day period at what rate is gravitational potential
in calculating the molar enthalpy change for reaction 3 why did the instructions specify to base it on moles of mg used
for stronium oxide sro the solubility in water is 069 g per 100ml at 30 degrees c and 228g per 100 ml at 100 c write
draw the organic product of the following reaction between 1s3s-1-chloro-3-methylcyclopentane and methanethiol in the
you are asked to prepare 500 ml of a 0150 m acetate buffer at ph 450 using only pure acetic acid 300 m naoh and water
when a 197 ml sample of a 0323 m aqueous hydrofluoric acid solution is titrated with a 0399 m aqueous potassium
an object 5 millimeters high is located 15 millmeters in frontof a plane mirror how far from the mirror is the image
write complete ionic equation to show the reaction of aqueous leadii nitrate with aqueous potassium sulfate to form
jack and jill ran up the hill at 339 ms thehorizontal component of jills velocity vector was 205 mswhat was the angle
three particles eachwith a charge of 635 muc and a speed of 3050 ms enter auniform magnetic field whose magnitude is
a series rl circuit has a resistance of 50 ohms and an inductance of 140 mh and is driven by a 120-v 60-hz
santa loses his footing and slides down a frictionless snowy roofthat is tilted at an angle of 27deg if santa slides893
a calculate the standard enthalpy of formation of gaseous diborane b2h6 using the following thermochemical information4
the time constant of a rc circuit is 5 sec how long does it takefor the capacitor in this circuit to accumulate about
the current in a circuit is tripled by connecting a 500-ohm resistor in parallel with the resistance of the circuit
a boat takes 32 hours to travel 2801 km down a river then 55hours to return how fast is the river