What does Einstein's famous equation say that all matter is? concentrated supernovas that have condensed into dwarfs
concentrated energy that has condensed into the atoms
concentrated atoms that have condensed into protons
concentrated nebulas that have been condensed into red giants

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

The ozone hole appears in antarctica during