The formal procedure for taking equipment out of service and ensuring it cannot be operated until an unauthorized person has returned it to service is

What was the procedure by which case united states vs lopez went to court

What is the name of this hydrocarbon?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?