To keep her dog from running away while she talks to a friend, susan pulls gently on the dog's leash with a constant force given by f⃗ = (2.3 n )x^ + (1.2 n )y^. part a how much work does she do on the dog if its displacement is d⃗ = (0.34 m )x^,

In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Frequency of electromagnetic waves that a radio station is assigned is called