Johnny counts 6 apples on the floor. What is the maximum and minimum number of apples? What is the uncertainty of the measurement?

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question