Question 10 A balloon with a charge of -6.67 x 10-6 C is brought near a metal rod with a
charge of -5.27 x 10-8 C. They are separated by a distance of 0.43 m.
a) What is the electrical force acting on them? (round your answer to the
nearest ten thousandths place, for example 0.1234 or -0.1234)
Please help me

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

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?