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use the heisenberg uncertainty principle to calculate the uncertainty in meters in the position of a honeybee weighing
a water pump lifts water from a well depth of 30 to the ground level how much work does the pump do by moving 2 m3 of
a child throws a stone from the top of a 15 m cliff with a speed of 20 ms if the stone weights 2 n find its kinetic
what is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number
a 200 ohm resistor is rated at 14 wa what is the maximum current it can drawb what is the maximum voltage that should
a calorimeter contains 270 g of water at 110 c when 210 g of x a substance with a molar mass of 800 g is added it
a submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the sun appears to be 32
a piece of chocolate cake contains about 400 calories a nutritional calorie is equal to 1000 calories thermochemical
two people carry a heavy electric motor by placing it on a light board 250m long one person lifts at one end with a
why pure oxygen is often administered to victims of co poisoning explain using le chateliers principle hb co aq o2 aq
calculate the heat capacity of satan i e ni if 300g of nickel at 1000 c raises the temperature of 250g of water from
transverse waves with a speed of 535 ms are to be produced on a stretched string a 435-m length of string with a total
the isotope 22na has a half-life of 260 years how much of a 100 gram sample would be left after 100
bromocresol green ka 20x10-5 is yellow in its protonated form hx and blue in its ionized form x- at what ph will
suppose 050 moles of a substance reacts in 250 grams of water if the water temperature goes from 22 degrees c to 26
two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 76 x 106 nc
blue light of frequency 60 1014 hz falls on the surface of potassium which has a work function of 226 ev find the
a research group plans to construct an engine that extracts energy from the ocean using the fact that the water
a nuclear power plant has a reactor that produces heat at the rate of870mw this heat is used to produce260mw of
a 19-kg mass attached to a spring is displaced 76 cm from the equilibrium position it is released and then oscillates
an acid-base equilibrium system is created by disolving 010 mol hf in water to a volume of 10 l what is teh effect of
singly ionized one electron removed atoms are accelerated and then passed through a velocity selector consisting of
in a modified version of the unknown acid analysis experiment a 07032 g sample of unknown monoprotic weak acid was
154 g of water at 800degc are mixed with 781 g of water at 230degc if no heat is lost to the surroundings what is the
an alpha particle a he nucleus containing two protons and two neutrons and having a mass of 652times1027 kg traveling