Me asap! : ,) atoms consist of a nucleus that is made of protons and electrons that is surrounded by neutrons. true or false? !

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Which is not true about oxygen-17 and oxygen-18?

Amira pulls a 3 pound wagon 4 feet. how much work has she done?