A ball of mass = 1kg and radius RO=RO=0.1 is placed on a semicircular track with radius R1 that leads to a circular loop track that has a radius R2=3.0m. The ball rolls through all parts of the track without slipping. Note that the radius of the ball is not negligible, ie, it effectively decreases the radius of the looped track by RO. If the ball is to remain on the track at all times.

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest