An industrial water shutoff valve is designed to operate with 10 lb of effort force on the handle. The valve will encounter 150 lb of resistance force applied to a 3 in. diameter axle. What is the required actual mechanical advantage (AMA) of the system?

Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain

What is a carrier wave and how does it affect what you hear on the radio

What are the north and south poles of a solenoid change with?