Which of the following blocks would be considered a "loop"? * 1 point when run when run repeat 5 times do move forward turn left u Option 1 Option 2 when run turn left u when run move forward move forward turn left u O Option 4 Option 3 0 points What is your class period?

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.