Acardinal (richmondena cardinalis) of mass 3.90×10−2 kg and a baseball of mass 0.143 kg have the same kinetic energy. what is the ratio of the cardinal's magnitude pc of momentum to the magnitude pb of the baseball's momentum?

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

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples