You measure three segments of the distance between a diffraction slit an the screen on which the pattern forms: x = (19.1 + 0.2) cm, x2 = (5.11 0.1) cm, and x3 = (11.2 +0.2). What is the uncertainty of the total distance x1 + X2+ X3?

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)