Making equal angles with the ceiling
A loudspeaker of mass 16.0 {rm kg} is suspended a distance of h = 1.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10 {rm m}.
What is the tension T in each of the cables?
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The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder. On ignition, the reaction that takes place is6 NH4ClO4(s) + 10 Al(s) → 5 Al2O3(s) + 3 N2(g) + 6 HCl(g) + 9 H2O(g). What mass of
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 and 1.00 ] and that no heat is lost to the calorimeter itself, nor to the surroundings.
Calculate the approximate mass of KHP required to react with 40.0mL of 0.125M sodium hydroxide in a titration'
10 ml of 0.1 M NAOH were added to the solution followed by the addition of 50 ml of 0.02 M HCl. What will be the ph of the new solution? ka(acetic acid)= 1.8*10^-5.
Discuss how American foreign policy changed between 1877 and the end of World War I, by identifying and explaining three factors that encouraged Americans to expand global relations.
What is the mechanism for the peroxodisulphate and iodide reaction (iodine clock reaction).
Calculate the amount of heat required to completely sublime 43.0 of solid dry ice at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 .
How much heat energy, in kilojoules, is required to convert 64.0 grams of ice at -18.0 degrees celcius to water at 25.0 degrees celcius?
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