How does an atom of sulfur-36 become a sulfide ion with a -2 charge a. the atom gains 2 protons to have a total of 38 b. the atom loses 2 electrons to have a total of 14 c. the atom loses 2 protons to have a total of 14 d. the atom gains 2 electrons to have a total of 18

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity