. Imagine you are climbing up some stairs. The bottom stair represents atomic particles. The top stair represents a glass of water. Which of the following terms would be on the 1st step, above atomic particles?
electrons
hydrogen and oxygen elements
water
molecule

Atomic nuclei of almost all elements consist of

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)