A sphere has a charge of -6.40 x 10-7 coulomb. Approximately how many electrons must be removed to make the sphere neutral? a. 2.50 x 10-13 c. 4.00 x 1012
b. 1.60 x 1012 d. 7.03 x 1024

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

the answer would be 32*f

the answer is b, have negligible mass