Be sure to answer all parts. assume the diameter of a neutral helium atom is 1.40 × 102 pm. suppose that we could line up helium atoms side by side in contact with one another. how many atoms would it take to make the distance 2.60 cm from end to end? × 10 he atoms (enter your answer in scientific notation.)

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false