Before you touch a wire in an appliance, how should you make sure that it is not energized?
a. by testing for leakage with an ohmmeter

b. by plugging in the line cord and closing the appliance switch

c. by touching the grounded and black wires and watching for a spark

d. by checking for voltage with a neon tester

Robots with telescoping arms are sometimes used to perform tasks (e.g., welding or placing screws) where access may be difficult for other robotic types. during a test run, a robot arm is programmed to extend according to the relationship r = 3 + 0.5cos(4θ) and the arm rotates according to the relationship θ=−π4t2+πt , where r is in feet, θ is in radians, and t is in seconds. use a computer program to plot the path of tip a in x and y coordinates for 0 ≤ t ≤ 4s.

All of the following are characteristics that must be contained in any knowledge representation scheme except

What are the different parts of computer